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[ARM] remove arch-imx

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arch-imx is superseeded by the MXC architecture support.
This patch removes arch/arm/mach-imx from the kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-04-01 12:41:21 +02:00
parent 8c8fdbc9bd
commit 1341d34ffc
32 changed files with 0 additions and 3504 deletions
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11
arch/arm/mach-imx/Kconfig
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@ -1,11 +0,0 @@
menu "IMX Implementations"
depends on ARCH_IMX
config ARCH_MX1ADS
bool "mx1ads"
depends on ARCH_IMX
select ISA
help
Say Y here if you are using the Motorola MX1ADS board
endmenu

18
arch/arm/mach-imx/Makefile
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@ -1,18 +0,0 @@
#
# Makefile for the linux kernel.
#
# Object file lists.
obj-y += irq.o time.o dma.o generic.o clock.o
obj-$(CONFIG_CPU_FREQ_IMX) += cpufreq.o
# Specific board support
obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o
# Support for blinky lights
led-y := leds.o
obj-$(CONFIG_LEDS) += $(led-y)
led-$(CONFIG_ARCH_MX1ADS) += leds-mx1ads.o

2
arch/arm/mach-imx/Makefile.boot
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@ -1,2 +0,0 @@
zreladdr-$(CONFIG_ARCH_MX1ADS) := 0x08008000

210
arch/arm/mach-imx/clock.c
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@ -1,210 +0,0 @@
/*
* Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/math64.h>
#include <linux/err.h>
#include <linux/io.h>
#include <mach/hardware.h>
/*
* Very simple approach: We can't disable clocks, so we do
* not need refcounting
*/
struct clk {
struct list_head node;
const char *name;
unsigned long (*get_rate)(void);
};
/*
* get the system pll clock in Hz
*
* mfi + mfn / (mfd +1)
* f = 2 * f_ref * --------------------
* pd + 1
*/
static unsigned long imx_decode_pll(unsigned int pll, u32 f_ref)
{
unsigned long long ll;
unsigned long quot;
u32 mfi = (pll >> 10) & 0xf;
u32 mfn = pll & 0x3ff;
u32 mfd = (pll >> 16) & 0x3ff;
u32 pd = (pll >> 26) & 0xf;
mfi = mfi <= 5 ? 5 : mfi;
ll = 2 * (unsigned long long)f_ref *
((mfi << 16) + (mfn << 16) / (mfd + 1));
quot = (pd + 1) * (1 << 16);
ll += quot / 2;
do_div(ll, quot);
return (unsigned long)ll;
}
static unsigned long imx_get_system_clk(void)
{
u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512);
return imx_decode_pll(SPCTL0, f_ref);
}
static unsigned long imx_get_mcu_clk(void)
{
return imx_decode_pll(MPCTL0, CLK32 * 512);
}
/*
* get peripheral clock 1 ( UART[12], Timer[12], PWM )
*/
static unsigned long imx_get_perclk1(void)
{
return imx_get_system_clk() / (((PCDR) & 0xf)+1);
}
/*
* get peripheral clock 2 ( LCD, SD, SPI[12] )
*/
static unsigned long imx_get_perclk2(void)
{
return imx_get_system_clk() / (((PCDR>>4) & 0xf)+1);
}
/*
* get peripheral clock 3 ( SSI )
*/
static unsigned long imx_get_perclk3(void)
{
return imx_get_system_clk() / (((PCDR>>16) & 0x7f)+1);
}
/*
* get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
*/
static unsigned long imx_get_hclk(void)
{
return imx_get_system_clk() / (((CSCR>>10) & 0xf)+1);
}
static struct clk clk_system_clk = {
.name = "system_clk",
.get_rate = imx_get_system_clk,
};
static struct clk clk_hclk = {
.name = "hclk",
.get_rate = imx_get_hclk,
};
static struct clk clk_mcu_clk = {
.name = "mcu_clk",
.get_rate = imx_get_mcu_clk,
};
static struct clk clk_perclk1 = {
.name = "perclk1",
.get_rate = imx_get_perclk1,
};
static struct clk clk_uart_clk = {
.name = "uart_clk",
.get_rate = imx_get_perclk1,
};
static struct clk clk_perclk2 = {
.name = "perclk2",
.get_rate = imx_get_perclk2,
};
static struct clk clk_perclk3 = {
.name = "perclk3",
.get_rate = imx_get_perclk3,
};
static struct clk *clks[] = {
&clk_perclk1,
&clk_perclk2,
&clk_perclk3,
&clk_system_clk,
&clk_hclk,
&clk_mcu_clk,
&clk_uart_clk,
};
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
struct clk *clk_get(struct device *dev, const char *id)
{
struct clk *p, *clk = ERR_PTR(-ENOENT);
mutex_lock(&clocks_mutex);
list_for_each_entry(p, &clocks, node) {
if (!strcmp(p->name, id)) {
clk = p;
goto found;
}
}
found:
mutex_unlock(&clocks_mutex);
return clk;
}
EXPORT_SYMBOL(clk_get);
void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
return clk->get_rate();
}
EXPORT_SYMBOL(clk_get_rate);
int imx_clocks_init(void)
{
int i;
mutex_lock(&clocks_mutex);
for (i = 0; i < ARRAY_SIZE(clks); i++)
list_add(&clks[i]->node, &clocks);
mutex_unlock(&clocks_mutex);
return 0;
}

315
arch/arm/mach-imx/cpufreq.c
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@ -1,315 +0,0 @@
/*
* cpu.c: clock scaling for the iMX
*
* Copyright (C) 2000 2001, The Delft University of Technology
* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
* Copyright (C) 2006 Inky Lung <ilung@cwlinux.com>
* Copyright (C) 2006 Pavel Pisa, PiKRON <ppisa@pikron.com>
*
* Based on SA1100 version written by:
* - Johan Pouwelse (J.A.Pouwelse@its.tudelft.nl): initial version
* - Erik Mouw (J.A.K.Mouw@its.tudelft.nl):
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*#define DEBUG*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/cpufreq.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include "generic.h"
#ifndef __val2mfld
#define __val2mfld(mask,val) (((mask)&~((mask)<<1))*(val)&(mask))
#endif
#ifndef __mfld2val
#define __mfld2val(mask,val) (((val)&(mask))/((mask)&~((mask)<<1)))
#endif
#define CR_920T_CLOCK_MODE 0xC0000000
#define CR_920T_FASTBUS_MODE 0x00000000
#define CR_920T_ASYNC_MODE 0xC0000000
static u32 mpctl0_at_boot;
static u32 bclk_div_at_boot;
static struct clk *system_clk, *mcu_clk;
static void imx_set_async_mode(void)
{
adjust_cr(CR_920T_CLOCK_MODE, CR_920T_ASYNC_MODE);
}
static void imx_set_fastbus_mode(void)
{
adjust_cr(CR_920T_CLOCK_MODE, CR_920T_FASTBUS_MODE);
}
static void imx_set_mpctl0(u32 mpctl0)
{
unsigned long flags;
if (mpctl0 == 0) {
local_irq_save(flags);
CSCR &= ~CSCR_MPEN;
local_irq_restore(flags);
return;
}
local_irq_save(flags);
MPCTL0 = mpctl0;
CSCR |= CSCR_MPEN;
local_irq_restore(flags);
}
/**
* imx_compute_mpctl - compute new PLL parameters
* @new_mpctl: pointer to location assigned by new PLL control register value
* @cur_mpctl: current PLL control register parameters
* @f_ref: reference source frequency Hz
* @freq: required frequency in Hz
* @relation: is one of %CPUFREQ_RELATION_L (supremum)
* and %CPUFREQ_RELATION_H (infimum)
*/
long imx_compute_mpctl(u32 *new_mpctl, u32 cur_mpctl, u32 f_ref, unsigned long freq, int relation)
{
u32 mfi;
u32 mfn;
u32 mfd;
u32 pd;
unsigned long long ll;
long l;
long quot;
/* Fdppl=2*Fref*(MFI+MFN/(MFD+1))/(PD+1) */
/* PD=<0,15>, MFD=<1,1023>, MFI=<5,15> MFN=<0,1022> */
if (cur_mpctl) {
mfd = ((cur_mpctl >> 16) & 0x3ff) + 1;
pd = ((cur_mpctl >> 26) & 0xf) + 1;
} else {
pd=2; mfd=313;
}
/* pd=2; mfd=313; mfi=8; mfn=183; */
/* (MFI+MFN/(MFD)) = Fdppl / (2*Fref) * (PD); */
quot = (f_ref + (1 << 9)) >> 10;
l = (freq * pd + quot) / (2 * quot);
mfi = l >> 10;
mfn = ((l & ((1 << 10) - 1)) * mfd + (1 << 9)) >> 10;
mfd -= 1;
pd -= 1;
*new_mpctl = ((mfi & 0xf) << 10) | (mfn & 0x3ff) | ((mfd & 0x3ff) << 16)
| ((pd & 0xf) << 26);
ll = 2 * (unsigned long long)f_ref * ( (mfi<<16) + (mfn<<16) / (mfd+1) );
quot = (pd+1) * (1<<16);
ll += quot / 2;
do_div(ll, quot);
freq = ll;
pr_debug(KERN_DEBUG "imx: new PLL parameters pd=%d mfd=%d mfi=%d mfn=%d, freq=%ld\n",
pd, mfd, mfi, mfn, freq);
return freq;
}
static int imx_verify_speed(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
return 0;
}
static unsigned int imx_get_speed(unsigned int cpu)
{
unsigned int freq;
unsigned int cr;
unsigned int cscr;
unsigned int bclk_div;
if (cpu)
return 0;
cscr = CSCR;
bclk_div = __mfld2val(CSCR_BCLK_DIV, cscr) + 1;
cr = get_cr();
if((cr & CR_920T_CLOCK_MODE) == CR_920T_FASTBUS_MODE) {
freq = clk_get_rate(system_clk);
freq = (freq + bclk_div/2) / bclk_div;
} else {
freq = clk_get_rate(mcu_clk);
if (cscr & CSCR_MPU_PRESC)
freq /= 2;
}
freq = (freq + 500) / 1000;
return freq;
}
static int imx_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
struct cpufreq_freqs freqs;
u32 mpctl0 = 0;
u32 cscr;
unsigned long flags;
long freq;
long sysclk;
unsigned int bclk_div = bclk_div_at_boot;
/*
* Some governors do not respects CPU and policy lower limits
* which leads to bad things (division by zero etc), ensure
* that such things do not happen.
*/
if(target_freq < policy->cpuinfo.min_freq)
target_freq = policy->cpuinfo.min_freq;
if(target_freq < policy->min)
target_freq = policy->min;
freq = target_freq * 1000;
pr_debug(KERN_DEBUG "imx: requested frequency %ld Hz, mpctl0 at boot 0x%08x\n",
freq, mpctl0_at_boot);
sysclk = clk_get_rate(system_clk);
if (freq > sysclk / bclk_div_at_boot + 1000000) {
freq = imx_compute_mpctl(&mpctl0, mpctl0_at_boot, CLK32 * 512, freq, relation);
if (freq < 0) {
printk(KERN_WARNING "imx: target frequency %ld Hz cannot be set\n", freq);
return -EINVAL;
}
} else {
if(freq + 1000 < sysclk) {
if (relation == CPUFREQ_RELATION_L)
bclk_div = (sysclk - 1000) / freq;
else
bclk_div = (sysclk + freq + 1000) / freq;
if(bclk_div > 16)
bclk_div = 16;
if(bclk_div < bclk_div_at_boot)
bclk_div = bclk_div_at_boot;
}
freq = (sysclk + bclk_div / 2) / bclk_div;
}
freqs.old = imx_get_speed(0);
freqs.new = (freq + 500) / 1000;
freqs.cpu = 0;
freqs.flags = 0;
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
local_irq_save(flags);
imx_set_fastbus_mode();
imx_set_mpctl0(mpctl0);
cscr = CSCR;
cscr &= ~CSCR_BCLK_DIV;
cscr |= __val2mfld(CSCR_BCLK_DIV, bclk_div - 1);
CSCR = cscr;
if(mpctl0) {
CSCR |= CSCR_MPLL_RESTART;
/* Wait until MPLL is stabilized */
while( CSCR & CSCR_MPLL_RESTART );
imx_set_async_mode();
}
local_irq_restore(flags);
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
pr_debug(KERN_INFO "imx: set frequency %ld Hz, running from %s\n",
freq, mpctl0? "MPLL": "SPLL");
return 0;
}
static int __init imx_cpufreq_driver_init(struct cpufreq_policy *policy)
{
printk(KERN_INFO "i.MX cpu freq change driver v1.0\n");
if (policy->cpu != 0)
return -EINVAL;
policy->cur = policy->min = policy->max = imx_get_speed(0);
policy->cpuinfo.min_freq = 8000;
policy->cpuinfo.max_freq = 200000;
/* Manual states, that PLL stabilizes in two CLK32 periods */
policy->cpuinfo.transition_latency = 4 * 1000000000LL / CLK32;
return 0;
}
static struct cpufreq_driver imx_driver = {
.flags = CPUFREQ_STICKY,
.verify = imx_verify_speed,
.target = imx_set_target,
.get = imx_get_speed,
.init = imx_cpufreq_driver_init,
.name = "imx",
};
static int __init imx_cpufreq_init(void)
{
bclk_div_at_boot = __mfld2val(CSCR_BCLK_DIV, CSCR) + 1;
mpctl0_at_boot = 0;
system_clk = clk_get(NULL, "system_clk");
if (IS_ERR(system_clk))
return PTR_ERR(system_clk);
mcu_clk = clk_get(NULL, "mcu_clk");
if (IS_ERR(mcu_clk)) {
clk_put(system_clk);
return PTR_ERR(mcu_clk);
}
if((CSCR & CSCR_MPEN) &&
((get_cr() & CR_920T_CLOCK_MODE) != CR_920T_FASTBUS_MODE))
mpctl0_at_boot = MPCTL0;
return cpufreq_register_driver(&imx_driver);
}
arch_initcall(imx_cpufreq_init);

597
arch/arm/mach-imx/dma.c
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/*
* linux/arch/arm/mach-imx/dma.c
*
* imx DMA registration and IRQ dispatching
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 2004-03-03 Sascha Hauer <sascha@saschahauer.de>
* initial version heavily inspired by
* linux/arch/arm/mach-pxa/dma.c
*
* 2005-04-17 Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Changed to support scatter gather DMA
* by taking Russell's code from RiscPC
*
* 2006-05-31 Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Corrected error handling code.
*
*/
#undef DEBUG
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <asm/scatterlist.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/dma.h>
#include <mach/imx-dma.h>
struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS];
/*
* imx_dma_sg_next - prepare next chunk for scatter-gather DMA emulation
* @dma_ch: i.MX DMA channel number
* @lastcount: number of bytes transferred during last transfer
*
* Functions prepares DMA controller for next sg data chunk transfer.
* The @lastcount argument informs function about number of bytes transferred
* during last block. Zero value can be used for @lastcount to setup DMA
* for the first chunk.
*/
static inline int imx_dma_sg_next(imx_dmach_t dma_ch, unsigned int lastcount)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
unsigned int nextcount;
unsigned int nextaddr;
if (!imxdma->name) {
printk(KERN_CRIT "%s: called for not allocated channel %d\n",
__func__, dma_ch);
return 0;
}
imxdma->resbytes -= lastcount;
if (!imxdma->sg) {
pr_debug("imxdma%d: no sg data\n", dma_ch);
return 0;
}
imxdma->sgbc += lastcount;
if ((imxdma->sgbc >= imxdma->sg->length) || !imxdma->resbytes) {
if ((imxdma->sgcount <= 1) || !imxdma->resbytes) {
pr_debug("imxdma%d: sg transfer limit reached\n",
dma_ch);
imxdma->sgcount=0;
imxdma->sg = NULL;
return 0;
} else {
imxdma->sgcount--;
imxdma->sg++;
imxdma->sgbc = 0;
}
}
nextcount = imxdma->sg->length - imxdma->sgbc;
nextaddr = imxdma->sg->dma_address + imxdma->sgbc;
if(imxdma->resbytes < nextcount)
nextcount = imxdma->resbytes;
if ((imxdma->dma_mode & DMA_MODE_MASK) == DMA_MODE_READ)
DAR(dma_ch) = nextaddr;
else
SAR(dma_ch) = nextaddr;
CNTR(dma_ch) = nextcount;
pr_debug("imxdma%d: next sg chunk dst 0x%08x, src 0x%08x, size 0x%08x\n",
dma_ch, DAR(dma_ch), SAR(dma_ch), CNTR(dma_ch));
return nextcount;
}
/*
* imx_dma_setup_sg_base - scatter-gather DMA emulation
* @dma_ch: i.MX DMA channel number
* @sg: pointer to the scatter-gather list/vector
* @sgcount: scatter-gather list hungs count
*
* Functions sets up i.MX DMA state for emulated scatter-gather transfer
* and sets up channel registers to be ready for the first chunk
*/
static int
imx_dma_setup_sg_base(imx_dmach_t dma_ch,
struct scatterlist *sg, unsigned int sgcount)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
imxdma->sg = sg;
imxdma->sgcount = sgcount;
imxdma->sgbc = 0;
return imx_dma_sg_next(dma_ch, 0);
}
/**
* imx_dma_setup_single - setup i.MX DMA channel for linear memory to/from device transfer
* @dma_ch: i.MX DMA channel number
* @dma_address: the DMA/physical memory address of the linear data block
* to transfer
* @dma_length: length of the data block in bytes
* @dev_addr: physical device port address
* @dmamode: DMA transfer mode, %DMA_MODE_READ from the device to the memory
* or %DMA_MODE_WRITE from memory to the device
*
* The function setups DMA channel source and destination addresses for transfer
* specified by provided parameters. The scatter-gather emulation is disabled,
* because linear data block
* form the physical address range is transferred.
* Return value: if incorrect parameters are provided -%EINVAL.
* Zero indicates success.
*/
int
imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address,
unsigned int dma_length, unsigned int dev_addr,
unsigned int dmamode)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
imxdma->sg = NULL;
imxdma->sgcount = 0;
imxdma->dma_mode = dmamode;
imxdma->resbytes = dma_length;
if (!dma_address) {
printk(KERN_ERR "imxdma%d: imx_dma_setup_single null address\n",
dma_ch);
return -EINVAL;
}
if (!dma_length) {
printk(KERN_ERR "imxdma%d: imx_dma_setup_single zero length\n",
dma_ch);
return -EINVAL;
}
if ((dmamode & DMA_MODE_MASK) == DMA_MODE_READ) {
pr_debug("imxdma%d: mx_dma_setup_single2dev dma_addressg=0x%08x dma_length=%d dev_addr=0x%08x for read\n",
dma_ch, (unsigned int)dma_address, dma_length,
dev_addr);
SAR(dma_ch) = dev_addr;
DAR(dma_ch) = (unsigned int)dma_address;
} else if ((dmamode & DMA_MODE_MASK) == DMA_MODE_WRITE) {
pr_debug("imxdma%d: mx_dma_setup_single2dev dma_addressg=0x%08x dma_length=%d dev_addr=0x%08x for write\n",
dma_ch, (unsigned int)dma_address, dma_length,
dev_addr);
SAR(dma_ch) = (unsigned int)dma_address;
DAR(dma_ch) = dev_addr;
} else {
printk(KERN_ERR "imxdma%d: imx_dma_setup_single bad dmamode\n",
dma_ch);
return -EINVAL;
}
CNTR(dma_ch) = dma_length;
return 0;
}
/**
* imx_dma_setup_sg - setup i.MX DMA channel SG list to/from device transfer
* @dma_ch: i.MX DMA channel number
* @sg: pointer to the scatter-gather list/vector
* @sgcount: scatter-gather list hungs count
* @dma_length: total length of the transfer request in bytes
* @dev_addr: physical device port address
* @dmamode: DMA transfer mode, %DMA_MODE_READ from the device to the memory
* or %DMA_MODE_WRITE from memory to the device
*
* The function sets up DMA channel state and registers to be ready for transfer
* specified by provided parameters. The scatter-gather emulation is set up
* according to the parameters.
*
* The full preparation of the transfer requires setup of more register
* by the caller before imx_dma_enable() can be called.
*
* %BLR(dma_ch) holds transfer burst length in bytes, 0 means 64 bytes
*
* %RSSR(dma_ch) has to be set to the DMA request line source %DMA_REQ_xxx
*
* %CCR(dma_ch) has to specify transfer parameters, the next settings is typical
* for linear or simple scatter-gather transfers if %DMA_MODE_READ is specified
*
* %CCR_DMOD_LINEAR | %CCR_DSIZ_32 | %CCR_SMOD_FIFO | %CCR_SSIZ_x
*
* The typical setup for %DMA_MODE_WRITE is specified by next options combination
*
* %CCR_SMOD_LINEAR | %CCR_SSIZ_32 | %CCR_DMOD_FIFO | %CCR_DSIZ_x
*
* Be careful here and do not mistakenly mix source and target device
* port sizes constants, they are really different:
* %CCR_SSIZ_8, %CCR_SSIZ_16, %CCR_SSIZ_32,
* %CCR_DSIZ_8, %CCR_DSIZ_16, %CCR_DSIZ_32
*
* Return value: if incorrect parameters are provided -%EINVAL.
* Zero indicates success.
*/
int
imx_dma_setup_sg(imx_dmach_t dma_ch,
struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length,
unsigned int dev_addr, unsigned int dmamode)
{
int res;
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
imxdma->sg = NULL;
imxdma->sgcount = 0;
imxdma->dma_mode = dmamode;
imxdma->resbytes = dma_length;
if (!sg || !sgcount) {
printk(KERN_ERR "imxdma%d: imx_dma_setup_sg epty sg list\n",
dma_ch);
return -EINVAL;
}
if (!sg->length) {
printk(KERN_ERR "imxdma%d: imx_dma_setup_sg zero length\n",
dma_ch);
return -EINVAL;
}
if ((dmamode & DMA_MODE_MASK) == DMA_MODE_READ) {
pr_debug("imxdma%d: mx_dma_setup_sg2dev sg=%p sgcount=%d total length=%d dev_addr=0x%08x for read\n",
dma_ch, sg, sgcount, dma_length, dev_addr);
SAR(dma_ch) = dev_addr;
} else if ((dmamode & DMA_MODE_MASK) == DMA_MODE_WRITE) {
pr_debug("imxdma%d: mx_dma_setup_sg2dev sg=%p sgcount=%d total length=%d dev_addr=0x%08x for write\n",
dma_ch, sg, sgcount, dma_length, dev_addr);
DAR(dma_ch) = dev_addr;
} else {
printk(KERN_ERR "imxdma%d: imx_dma_setup_sg bad dmamode\n",
dma_ch);
return -EINVAL;
}
res = imx_dma_setup_sg_base(dma_ch, sg, sgcount);
if (res <= 0) {
printk(KERN_ERR "imxdma%d: no sg chunk ready\n", dma_ch);
return -EINVAL;
}
return 0;
}
/**
* imx_dma_setup_handlers - setup i.MX DMA channel end and error notification handlers
* @dma_ch: i.MX DMA channel number
* @irq_handler: the pointer to the function called if the transfer
* ends successfully
* @err_handler: the pointer to the function called if the premature
* end caused by error occurs
* @data: user specified value to be passed to the handlers
*/
int
imx_dma_setup_handlers(imx_dmach_t dma_ch,
void (*irq_handler) (int, void *),
void (*err_handler) (int, void *, int),
void *data)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
unsigned long flags;
if (!imxdma->name) {
printk(KERN_CRIT "%s: called for not allocated channel %d\n",
__func__, dma_ch);
return -ENODEV;
}
local_irq_save(flags);
DISR = (1 << dma_ch);
imxdma->irq_handler = irq_handler;
imxdma->err_handler = err_handler;
imxdma->data = data;
local_irq_restore(flags);
return 0;
}
/**
* imx_dma_enable - function to start i.MX DMA channel operation
* @dma_ch: i.MX DMA channel number
*
* The channel has to be allocated by driver through imx_dma_request()
* or imx_dma_request_by_prio() function.
* The transfer parameters has to be set to the channel registers through
* call of the imx_dma_setup_single() or imx_dma_setup_sg() function
* and registers %BLR(dma_ch), %RSSR(dma_ch) and %CCR(dma_ch) has to
* be set prior this function call by the channel user.
*/
void imx_dma_enable(imx_dmach_t dma_ch)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
unsigned long flags;
pr_debug("imxdma%d: imx_dma_enable\n", dma_ch);
if (!imxdma->name) {
printk(KERN_CRIT "%s: called for not allocated channel %d\n",
__func__, dma_ch);
return;
}
local_irq_save(flags);
DISR = (1 << dma_ch);
DIMR &= ~(1 << dma_ch);
CCR(dma_ch) |= CCR_CEN;
local_irq_restore(flags);
}
/**
* imx_dma_disable - stop, finish i.MX DMA channel operatin
* @dma_ch: i.MX DMA channel number
*/
void imx_dma_disable(imx_dmach_t dma_ch)
{
unsigned long flags;
pr_debug("imxdma%d: imx_dma_disable\n", dma_ch);
local_irq_save(flags);
DIMR |= (1 << dma_ch);
CCR(dma_ch) &= ~CCR_CEN;
DISR = (1 << dma_ch);
local_irq_restore(flags);
}
/**
* imx_dma_request - request/allocate specified channel number
* @dma_ch: i.MX DMA channel number
* @name: the driver/caller own non-%NULL identification
*/
int imx_dma_request(imx_dmach_t dma_ch, const char *name)
{
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
unsigned long flags;
/* basic sanity checks */
if (!name)
return -EINVAL;
if (dma_ch >= IMX_DMA_CHANNELS) {
printk(KERN_CRIT "%s: called for non-existed channel %d\n",
__func__, dma_ch);
return -EINVAL;
}
local_irq_save(flags);
if (imxdma->name) {
local_irq_restore(flags);
return -ENODEV;
}
imxdma->name = name;
imxdma->irq_handler = NULL;
imxdma->err_handler = NULL;
imxdma->data = NULL;
imxdma->sg = NULL;
local_irq_restore(flags);
return 0;
}
/**
* imx_dma_free - release previously acquired channel
* @dma_ch: i.MX DMA channel number
*/
void imx_dma_free(imx_dmach_t dma_ch)
{
unsigned long flags;
struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
if (!imxdma->name) {
printk(KERN_CRIT
"%s: trying to free channel %d which is already freed\n",
__func__, dma_ch);
return;
}
local_irq_save(flags);
/* Disable interrupts */
DIMR |= (1 << dma_ch);
CCR(dma_ch) &= ~CCR_CEN;
imxdma->name = NULL;
local_irq_restore(flags);
}
/**
* imx_dma_request_by_prio - find and request some of free channels best suiting requested priority
* @name: the driver/caller own non-%NULL identification
* @prio: one of the hardware distinguished priority level:
* %DMA_PRIO_HIGH, %DMA_PRIO_MEDIUM, %DMA_PRIO_LOW
*
* This function tries to find free channel in the specified priority group
* if the priority cannot be achieved it tries to look for free channel
* in the higher and then even lower priority groups.
*
* Return value: If there is no free channel to allocate, -%ENODEV is returned.
* On successful allocation channel is returned.
*/
imx_dmach_t imx_dma_request_by_prio(const char *name, imx_dma_prio prio)
{
int i;
int best;
switch (prio) {
case (DMA_PRIO_HIGH):
best = 8;
break;
case (DMA_PRIO_MEDIUM):
best = 4;
break;
case (DMA_PRIO_LOW):
default:
best = 0;
break;
}
for (i = best; i < IMX_DMA_CHANNELS; i++) {
if (!imx_dma_request(i, name)) {
return i;
}
}
for (i = best - 1; i >= 0; i--) {
if (!imx_dma_request(i, name)) {
return i;
}
}
printk(KERN_ERR "%s: no free DMA channel found\n", __func__);
return -ENODEV;
}
static irqreturn_t dma_err_handler(int irq, void *dev_id)
{
int i, disr = DISR;
struct imx_dma_channel *channel;
unsigned int err_mask = DBTOSR | DRTOSR | DSESR | DBOSR;
int errcode;
DISR = disr & err_mask;
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
if(!(err_mask & (1 << i)))
continue;
channel = &imx_dma_channels[i];
errcode = 0;
if (DBTOSR & (1 << i)) {
DBTOSR = (1 << i);
errcode |= IMX_DMA_ERR_BURST;
}
if (DRTOSR & (1 << i)) {
DRTOSR = (1 << i);
errcode |= IMX_DMA_ERR_REQUEST;
}
if (DSESR & (1 << i)) {
DSESR = (1 << i);
errcode |= IMX_DMA_ERR_TRANSFER;
}
if (DBOSR & (1 << i)) {
DBOSR = (1 << i);
errcode |= IMX_DMA_ERR_BUFFER;
}
/*
* The cleaning of @sg field would be questionable
* there, because its value can help to compute
* remaining/transferred bytes count in the handler
*/
/*imx_dma_channels[i].sg = NULL;*/
if (channel->name && channel->err_handler) {
channel->err_handler(i, channel->data, errcode);
continue;
}
imx_dma_channels[i].sg = NULL;
printk(KERN_WARNING
"DMA timeout on channel %d (%s) -%s%s%s%s\n",
i, channel->name,
errcode&IMX_DMA_ERR_BURST? " burst":"",
errcode&IMX_DMA_ERR_REQUEST? " request":"",
errcode&IMX_DMA_ERR_TRANSFER? " transfer":"",
errcode&IMX_DMA_ERR_BUFFER? " buffer":"");
}
return IRQ_HANDLED;
}
static irqreturn_t dma_irq_handler(int irq, void *dev_id)
{
int i, disr = DISR;
pr_debug("imxdma: dma_irq_handler called, disr=0x%08x\n",
disr);
DISR = disr;
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
if (disr & (1 << i)) {
struct imx_dma_channel *channel = &imx_dma_channels[i];
if (channel->name) {
if (imx_dma_sg_next(i, CNTR(i))) {
CCR(i) &= ~CCR_CEN;
mb();
CCR(i) |= CCR_CEN;
} else {
if (channel->irq_handler)
channel->irq_handler(i,
channel->data);
}
} else {
/*
* IRQ for an unregistered DMA channel:
* let's clear the interrupts and disable it.
*/
printk(KERN_WARNING
"spurious IRQ for DMA channel %d\n", i);
}
}
}
return IRQ_HANDLED;
}
static int __init imx_dma_init(void)
{
int ret;
int i;
/* reset DMA module */
DCR = DCR_DRST;
ret = request_irq(DMA_INT, dma_irq_handler, 0, "DMA", NULL);
if (ret) {
printk(KERN_CRIT "Wow! Can't register IRQ for DMA\n");
return ret;
}
ret = request_irq(DMA_ERR, dma_err_handler, 0, "DMA", NULL);
if (ret) {
printk(KERN_CRIT "Wow! Can't register ERRIRQ for DMA\n");
free_irq(DMA_INT, NULL);
}
/* enable DMA module */
DCR = DCR_DEN;
/* clear all interrupts */
DISR = (1 << IMX_DMA_CHANNELS) - 1;
/* enable interrupts */
DIMR = (1 << IMX_DMA_CHANNELS) - 1;
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
imx_dma_channels[i].sg = NULL;
imx_dma_channels[i].dma_num = i;
}
return ret;
}
arch_initcall(imx_dma_init);
EXPORT_SYMBOL(imx_dma_setup_single);
EXPORT_SYMBOL(imx_dma_setup_sg);
EXPORT_SYMBOL(imx_dma_setup_handlers);
EXPORT_SYMBOL(imx_dma_enable);
EXPORT_SYMBOL(imx_dma_disable);
EXPORT_SYMBOL(imx_dma_request);
EXPORT_SYMBOL(imx_dma_free);
EXPORT_SYMBOL(imx_dma_request_by_prio);
EXPORT_SYMBOL(imx_dma_channels);

271
arch/arm/mach-imx/generic.c
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@ -1,271 +0,0 @@
/*
* arch/arm/mach-imx/generic.c
*
* author: Sascha Hauer
* Created: april 20th, 2004
* Copyright: Synertronixx GmbH
*
* Common code for i.MX machines
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <asm/errno.h>
#include <mach/hardware.h>
#include <mach/imx-regs.h>
#include <asm/mach/map.h>
#include <mach/mmc.h>
#include <mach/gpio.h>
unsigned long imx_gpio_alloc_map[(GPIO_PORT_MAX + 1) * 32 / BITS_PER_LONG];
void imx_gpio_mode(int gpio_mode)
{
unsigned int pin = gpio_mode & GPIO_PIN_MASK;
unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT;
unsigned int tmp;
/* Pullup enable */
if(gpio_mode & GPIO_PUEN)
PUEN(port) |= (1<<pin);
else
PUEN(port) &= ~(1<<pin);
/* Data direction */
if(gpio_mode & GPIO_OUT)
DDIR(port) |= 1<<pin;
else
DDIR(port) &= ~(1<<pin);
/* Primary / alternate function */
if(gpio_mode & GPIO_AF)
GPR(port) |= (1<<pin);
else
GPR(port) &= ~(1<<pin);
/* use as gpio? */
if(gpio_mode & GPIO_GIUS)
GIUS(port) |= (1<<pin);
else
GIUS(port) &= ~(1<<pin);
/* Output / input configuration */
/* FIXME: I'm not very sure about OCR and ICONF, someone
* should have a look over it
*/
if(pin<16) {
tmp = OCR1(port);
tmp &= ~( 3<<(pin*2));
tmp |= (ocr << (pin*2));
OCR1(port) = tmp;
ICONFA1(port) &= ~( 3<<(pin*2));
ICONFA1(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << (pin * 2);
ICONFB1(port) &= ~( 3<<(pin*2));
ICONFB1(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << (pin * 2);
} else {
tmp = OCR2(port);
tmp &= ~( 3<<((pin-16)*2));
tmp |= (ocr << ((pin-16)*2));
OCR2(port) = tmp;
ICONFA2(port) &= ~( 3<<((pin-16)*2));
ICONFA2(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << ((pin-16) * 2);
ICONFB2(port) &= ~( 3<<((pin-16)*2));
ICONFB2(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << ((pin-16) * 2);
}
}
EXPORT_SYMBOL(imx_gpio_mode);
int imx_gpio_request(unsigned gpio, const char *label)
{
if(gpio >= (GPIO_PORT_MAX + 1) * 32) {
printk(KERN_ERR "imx_gpio: Attempt to request nonexistent GPIO %d for \"%s\"\n",
gpio, label ? label : "?");
return -EINVAL;
}
if(test_and_set_bit(gpio, imx_gpio_alloc_map)) {
printk(KERN_ERR "imx_gpio: GPIO %d already used. Allocation for \"%s\" failed\n",
gpio, label ? label : "?");
return -EBUSY;
}
return 0;
}
EXPORT_SYMBOL(imx_gpio_request);
void imx_gpio_free(unsigned gpio)
{
if(gpio >= (GPIO_PORT_MAX + 1) * 32)
return;
clear_bit(gpio, imx_gpio_alloc_map);
}
EXPORT_SYMBOL(imx_gpio_free);
int imx_gpio_direction_input(unsigned gpio)
{
imx_gpio_mode(gpio | GPIO_IN | GPIO_GIUS | GPIO_DR);
return 0;
}
EXPORT_SYMBOL(imx_gpio_direction_input);
int imx_gpio_direction_output(unsigned gpio, int value)
{
imx_gpio_set_value(gpio, value);
imx_gpio_mode(gpio | GPIO_OUT | GPIO_GIUS | GPIO_DR);
return 0;
}
EXPORT_SYMBOL(imx_gpio_direction_output);
int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
int alloc_mode, const char *label)
{
const int *p = pin_list;
int i;
unsigned gpio;
unsigned mode;
for (i = 0; i < count; i++) {
gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK);
mode = *p & ~(GPIO_PIN_MASK | GPIO_PORT_MASK);
if (gpio >= (GPIO_PORT_MAX + 1) * 32)
goto setup_error;
if (alloc_mode & IMX_GPIO_ALLOC_MODE_RELEASE)
imx_gpio_free(gpio);
else if (!(alloc_mode & IMX_GPIO_ALLOC_MODE_NO_ALLOC))
if (imx_gpio_request(gpio, label))
if (!(alloc_mode & IMX_GPIO_ALLOC_MODE_TRY_ALLOC))
goto setup_error;
if (!(alloc_mode & (IMX_GPIO_ALLOC_MODE_ALLOC_ONLY |
IMX_GPIO_ALLOC_MODE_RELEASE)))
imx_gpio_mode(gpio | mode);
p++;
}
return 0;
setup_error:
if(alloc_mode & (IMX_GPIO_ALLOC_MODE_NO_ALLOC |
IMX_GPIO_ALLOC_MODE_TRY_ALLOC))
return -EINVAL;
while (p != pin_list) {
p--;
gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK);
imx_gpio_free(gpio);
}
return -EINVAL;
}
EXPORT_SYMBOL(imx_gpio_setup_multiple_pins);
void __imx_gpio_set_value(unsigned gpio, int value)
{
imx_gpio_set_value_inline(gpio, value);
}
EXPORT_SYMBOL(__imx_gpio_set_value);
int imx_gpio_to_irq(unsigned gpio)
{
return IRQ_GPIOA(0) + gpio;
}
EXPORT_SYMBOL(imx_gpio_to_irq);
int imx_irq_to_gpio(unsigned irq)
{
if (irq < IRQ_GPIOA(0))
return -EINVAL;
return irq - IRQ_GPIOA(0);
}
EXPORT_SYMBOL(imx_irq_to_gpio);
static struct resource imx_mmc_resources[] = {
[0] = {
.start = 0x00214000,
.end = 0x002140FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (SDHC_INT),
.end = (SDHC_INT),
.flags = IORESOURCE_IRQ,
},
};
static u64 imxmmmc_dmamask = 0xffffffffUL;
static struct platform_device imx_mmc_device = {
.name = "imx-mmc",
.id = 0,
.dev = {
.dma_mask = &imxmmmc_dmamask,
.coherent_dma_mask = 0xffffffff,
},
.num_resources = ARRAY_SIZE(imx_mmc_resources),
.resource = imx_mmc_resources,
};
void __init imx_set_mmc_info(struct imxmmc_platform_data *info)
{
imx_mmc_device.dev.platform_data = info;
}
static struct platform_device *devices[] __initdata = {
&imx_mmc_device,
};
static struct map_desc imx_io_desc[] __initdata = {
{
.virtual = IMX_IO_BASE,
.pfn = __phys_to_pfn(IMX_IO_PHYS),
.length = IMX_IO_SIZE,
.type = MT_DEVICE
}
};
void __init
imx_map_io(void)
{
iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc));
}
static int __init imx_init(void)
{
return platform_add_devices(devices, ARRAY_SIZE(devices));
}
subsys_initcall(imx_init);

16
arch/arm/mach-imx/generic.h
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@ -1,16 +0,0 @@
/*
* linux/arch/arm/mach-imx/generic.h
*
* Author: Sascha Hauer <sascha@saschahauer.de>
* Copyright: Synertronixx GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
extern void __init imx_map_io(void);
extern void __init imx_init_irq(void);
struct sys_timer;
extern struct sys_timer imx_timer;

34
arch/arm/mach-imx/include/mach/debug-macro.S
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@ -1,34 +0,0 @@
/* arch/arm/mach-imx/include/mach/debug-macro.S
*
* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x00000000 @ physical
movne \rx, #0xe0000000 @ virtual
orreq \rx, \rx, #0x00200000 @ physical
orr \rx, \rx, #0x00006000 @ UART1 offset
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x40] @ TXDATA
.endm
.macro waituart,rd,rx
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #0x98] @ SR2
tst \rd, #1 << 3 @ TXDC
beq 1002b @ wait until transmit done
.endm

56
arch/arm/mach-imx/include/mach/dma.h
View File

@ -1,56 +0,0 @@
/*
* linux/include/asm-arm/imxads/dma.h
*
* Copyright (C) 1997,1998 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
typedef enum {
DMA_PRIO_HIGH = 0,
DMA_PRIO_MEDIUM = 1,
DMA_PRIO_LOW = 2
} imx_dma_prio;
#define DMA_REQ_UART3_T 2
#define DMA_REQ_UART3_R 3
#define DMA_REQ_SSI2_T 4
#define DMA_REQ_SSI2_R 5
#define DMA_REQ_CSI_STAT 6
#define DMA_REQ_CSI_R 7
#define DMA_REQ_MSHC 8
#define DMA_REQ_DSPA_DCT_DOUT 9
#define DMA_REQ_DSPA_DCT_DIN 10
#define DMA_REQ_DSPA_MAC 11
#define DMA_REQ_EXT 12
#define DMA_REQ_SDHC 13
#define DMA_REQ_SPI1_R 14
#define DMA_REQ_SPI1_T 15
#define DMA_REQ_SSI_T 16
#define DMA_REQ_SSI_R 17
#define DMA_REQ_ASP_DAC 18
#define DMA_REQ_ASP_ADC 19
#define DMA_REQ_USP_EP(x) (20+(x))
#define DMA_REQ_SPI2_R 26
#define DMA_REQ_SPI2_T 27
#define DMA_REQ_UART2_T 28
#define DMA_REQ_UART2_R 29
#define DMA_REQ_UART1_T 30
#define DMA_REQ_UART1_R 31
#endif /* _ASM_ARCH_DMA_H */

32
arch/arm/mach-imx/include/mach/entry-macro.S
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@ -1,32 +0,0 @@
/*
* arch/arm/mach-imx/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for iMX-based platforms
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <mach/hardware.h>
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
#define AITC_NIVECSR 0x40
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \base, =IO_ADDRESS(IMX_AITC_BASE)
@ Load offset & priority of the highest priority
@ interrupt pending.
ldr \irqstat, [\base, #AITC_NIVECSR]
@ Shift off the priority leaving the offset or
@ "interrupt number", use arithmetic shift to
@ transform illegal source (0xffff) as -1
mov \irqnr, \irqstat, asr #16
adds \tmp, \irqnr, #1
.endm

106
arch/arm/mach-imx/include/mach/gpio.h
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@ -1,106 +0,0 @@
#ifndef _IMX_GPIO_H
#include <linux/kernel.h>
#include <mach/hardware.h>
#include <mach/imx-regs.h>
#define IMX_GPIO_ALLOC_MODE_NORMAL 0
#define IMX_GPIO_ALLOC_MODE_NO_ALLOC 1
#define IMX_GPIO_ALLOC_MODE_TRY_ALLOC 2
#define IMX_GPIO_ALLOC_MODE_ALLOC_ONLY 4
#define IMX_GPIO_ALLOC_MODE_RELEASE 8
extern int imx_gpio_request(unsigned gpio, const char *label);
extern void imx_gpio_free(unsigned gpio);
extern int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
int alloc_mode, const char *label);
extern int imx_gpio_direction_input(unsigned gpio);
extern int imx_gpio_direction_output(unsigned gpio, int value);
extern void __imx_gpio_set_value(unsigned gpio, int value);
static inline int imx_gpio_get_value(unsigned gpio)
{
return SSR(gpio >> GPIO_PORT_SHIFT) & (1 << (gpio & GPIO_PIN_MASK));
}
static inline void imx_gpio_set_value_inline(unsigned gpio, int value)
{
unsigned long flags;
raw_local_irq_save(flags);
if(value)
DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK));
else
DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK));
raw_local_irq_restore(flags);
}
static inline void imx_gpio_set_value(unsigned gpio, int value)
{
if(__builtin_constant_p(gpio))
imx_gpio_set_value_inline(gpio, value);
else
__imx_gpio_set_value(gpio, value);
}
extern int imx_gpio_to_irq(unsigned gpio);
extern int imx_irq_to_gpio(unsigned irq);
/*-------------------------------------------------------------------------*/
/* Wrappers for "new style" GPIO calls. These calls i.MX specific versions
* to allow future extension of GPIO logic.
*/
static inline int gpio_request(unsigned gpio, const char *label)
{
return imx_gpio_request(gpio, label);
}
static inline void gpio_free(unsigned gpio)
{
might_sleep();
imx_gpio_free(gpio);
}
static inline int gpio_direction_input(unsigned gpio)
{
return imx_gpio_direction_input(gpio);
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return imx_gpio_direction_output(gpio, value);
}
static inline int gpio_get_value(unsigned gpio)
{
return imx_gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
imx_gpio_set_value(gpio, value);
}
#include <asm-generic/gpio.h> /* cansleep wrappers */
static inline int gpio_to_irq(unsigned gpio)
{
return imx_gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned irq)
{
return imx_irq_to_gpio(irq);
}
#endif

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arch/arm/mach-imx/include/mach/hardware.h
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/*
* arch/arm/mach-imx/include/mach/hardware.h
*
* Copyright (C) 1999 ARM Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H
#include <asm/sizes.h>
#include "imx-regs.h"
#ifndef __ASSEMBLY__
# define __REG(x) (*((volatile u32 *)IO_ADDRESS(x)))
# define __REG2(x,y) (*(volatile u32 *)((u32)&__REG(x) + (y)))
#endif
/*
* Memory map
*/
#define IMX_IO_PHYS 0x00200000
#define IMX_IO_SIZE 0x00100000
#define IMX_IO_BASE 0xe0000000
#define IMX_CS0_PHYS 0x10000000
#define IMX_CS0_SIZE 0x02000000
#define IMX_CS0_VIRT 0xe8000000
#define IMX_CS1_PHYS 0x12000000
#define IMX_CS1_SIZE 0x01000000
#define IMX_CS1_VIRT 0xea000000
#define IMX_CS2_PHYS 0x13000000
#define IMX_CS2_SIZE 0x01000000
#define IMX_CS2_VIRT 0xeb000000
#define IMX_CS3_PHYS 0x14000000
#define IMX_CS3_SIZE 0x01000000
#define IMX_CS3_VIRT 0xec000000
#define IMX_CS4_PHYS 0x15000000
#define IMX_CS4_SIZE 0x01000000
#define IMX_CS4_VIRT 0xed000000
#define IMX_CS5_PHYS 0x16000000
#define IMX_CS5_SIZE 0x01000000
#define IMX_CS5_VIRT 0xee000000
#define IMX_FB_VIRT 0xF1000000
#define IMX_FB_SIZE (256*1024)
/* macro to get at IO space when running virtually */
#define IO_ADDRESS(x) ((x) | IMX_IO_BASE)
#ifndef __ASSEMBLY__
/*
* Handy routine to set GPIO functions
*/
extern void imx_gpio_mode( int gpio_mode );
#endif
#define MAXIRQNUM 62
#define MAXFIQNUM 62
#define MAXSWINUM 62
/*
* Use SDRAM for memory
*/
#define MEM_SIZE 0x01000000
#ifdef CONFIG_ARCH_MX1ADS
#include "mx1ads.h"
#endif
#endif

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arch/arm/mach-imx/include/mach/imx-dma.h
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/*
* linux/include/asm-arm/imxads/dma.h
*
* Copyright (C) 1997,1998 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <mach/dma.h>
#ifndef __ASM_ARCH_IMX_DMA_H
#define __ASM_ARCH_IMX_DMA_H
#define IMX_DMA_CHANNELS 11
/*
* struct imx_dma_channel - i.MX specific DMA extension
* @name: name specified by DMA client
* @irq_handler: client callback for end of transfer
* @err_handler: client callback for error condition
* @data: clients context data for callbacks
* @dma_mode: direction of the transfer %DMA_MODE_READ or %DMA_MODE_WRITE
* @sg: pointer to the actual read/written chunk for scatter-gather emulation
* @sgbc: counter of processed bytes in the actual read/written chunk
* @resbytes: total residual number of bytes to transfer
* (it can be lower or same as sum of SG mapped chunk sizes)
* @sgcount: number of chunks to be read/written
*
* Structure is used for IMX DMA processing. It would be probably good
* @struct dma_struct in the future for external interfacing and use
* @struct imx_dma_channel only as extension to it.
*/
struct imx_dma_channel {
const char *name;
void (*irq_handler) (int, void *);
void (*err_handler) (int, void *, int errcode);
void *data;
unsigned int dma_mode;
struct scatterlist *sg;
unsigned int sgbc;
unsigned int sgcount;
unsigned int resbytes;
int dma_num;
};
extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS];
#define IMX_DMA_ERR_BURST 1
#define IMX_DMA_ERR_REQUEST 2
#define IMX_DMA_ERR_TRANSFER 4
#define IMX_DMA_ERR_BUFFER 8
/* The type to distinguish channel numbers parameter from ordinal int type */
typedef int imx_dmach_t;
#define DMA_MODE_READ 0
#define DMA_MODE_WRITE 1
#define DMA_MODE_MASK 1
int
imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address,
unsigned int dma_length, unsigned int dev_addr, unsigned int dmamode);
int
imx_dma_setup_sg(imx_dmach_t dma_ch,
struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length,
unsigned int dev_addr, unsigned int dmamode);
int
imx_dma_setup_handlers(imx_dmach_t dma_ch,
void (*irq_handler) (int, void *),
void (*err_handler) (int, void *, int), void *data);
void imx_dma_enable(imx_dmach_t dma_ch);
void imx_dma_disable(imx_dmach_t dma_ch);
int imx_dma_request(imx_dmach_t dma_ch, const char *name);
void imx_dma_free(imx_dmach_t dma_ch);
imx_dmach_t imx_dma_request_by_prio(const char *name, imx_dma_prio prio);
#endif /* _ASM_ARCH_IMX_DMA_H */

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arch/arm/mach-imx/include/mach/imx-regs.h
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#ifndef _IMX_REGS_H
#define _IMX_REGS_H
/* ------------------------------------------------------------------------
* Motorola IMX system registers
* ------------------------------------------------------------------------
*
*/
/*
* Register BASEs, based on OFFSETs
*
*/
#define IMX_AIPI1_BASE (0x00000 + IMX_IO_BASE)
#define IMX_WDT_BASE (0x01000 + IMX_IO_BASE)
#define IMX_TIM1_BASE (0x02000 + IMX_IO_BASE)
#define IMX_TIM2_BASE (0x03000 + IMX_IO_BASE)
#define IMX_RTC_BASE (0x04000 + IMX_IO_BASE)
#define IMX_LCDC_BASE (0x05000 + IMX_IO_BASE)
#define IMX_UART1_BASE (0x06000 + IMX_IO_BASE)
#define IMX_UART2_BASE (0x07000 + IMX_IO_BASE)
#define IMX_PWM_BASE (0x08000 + IMX_IO_BASE)
#define IMX_DMAC_BASE (0x09000 + IMX_IO_BASE)
#define IMX_AIPI2_BASE (0x10000 + IMX_IO_BASE)
#define IMX_SIM_BASE (0x11000 + IMX_IO_BASE)
#define IMX_USBD_BASE (0x12000 + IMX_IO_BASE)
#define IMX_SPI1_BASE (0x13000 + IMX_IO_BASE)
#define IMX_MMC_BASE (0x14000 + IMX_IO_BASE)
#define IMX_ASP_BASE (0x15000 + IMX_IO_BASE)
#define IMX_BTA_BASE (0x16000 + IMX_IO_BASE)
#define IMX_I2C_BASE (0x17000 + IMX_IO_BASE)
#define IMX_SSI_BASE (0x18000 + IMX_IO_BASE)
#define IMX_SPI2_BASE (0x19000 + IMX_IO_BASE)
#define IMX_MSHC_BASE (0x1A000 + IMX_IO_BASE)
#define IMX_PLL_BASE (0x1B000 + IMX_IO_BASE)
#define IMX_GPIO_BASE (0x1C000 + IMX_IO_BASE)
#define IMX_EIM_BASE (0x20000 + IMX_IO_BASE)
#define IMX_SDRAMC_BASE (0x21000 + IMX_IO_BASE)
#define IMX_MMA_BASE (0x22000 + IMX_IO_BASE)
#define IMX_AITC_BASE (0x23000 + IMX_IO_BASE)
#define IMX_CSI_BASE (0x24000 + IMX_IO_BASE)
/* PLL registers */
#define CSCR __REG(IMX_PLL_BASE) /* Clock Source Control Register */
#define CSCR_SPLL_RESTART (1<<22)
#define CSCR_MPLL_RESTART (1<<21)
#define CSCR_SYSTEM_SEL (1<<16)
#define CSCR_BCLK_DIV (0xf<<10)
#define CSCR_MPU_PRESC (1<<15)
#define CSCR_SPEN (1<<1)
#define CSCR_MPEN (1<<0)
#define MPCTL0 __REG(IMX_PLL_BASE + 0x4) /* MCU PLL Control Register 0 */
#define MPCTL1 __REG(IMX_PLL_BASE + 0x8) /* MCU PLL and System Clock Register 1 */
#define SPCTL0 __REG(IMX_PLL_BASE + 0xc) /* System PLL Control Register 0 */
#define SPCTL1 __REG(IMX_PLL_BASE + 0x10) /* System PLL Control Register 1 */
#define PCDR __REG(IMX_PLL_BASE + 0x20) /* Peripheral Clock Divider Register */
/*
* GPIO Module and I/O Multiplexer
* x = 0..3 for reg_A, reg_B, reg_C, reg_D
*/
#define DDIR(x) __REG2(IMX_GPIO_BASE + 0x00, ((x) & 3) << 8)
#define OCR1(x) __REG2(IMX_GPIO_BASE + 0x04, ((x) & 3) << 8)
#define OCR2(x) __REG2(IMX_GPIO_BASE + 0x08, ((x) & 3) << 8)
#define ICONFA1(x) __REG2(IMX_GPIO_BASE + 0x0c, ((x) & 3) << 8)
#define ICONFA2(x) __REG2(IMX_GPIO_BASE + 0x10, ((x) & 3) << 8)
#define ICONFB1(x) __REG2(IMX_GPIO_BASE + 0x14, ((x) & 3) << 8)
#define ICONFB2(x) __REG2(IMX_GPIO_BASE + 0x18, ((x) & 3) << 8)
#define DR(x) __REG2(IMX_GPIO_BASE + 0x1c, ((x) & 3) << 8)
#define GIUS(x) __REG2(IMX_GPIO_BASE + 0x20, ((x) & 3) << 8)
#define SSR(x) __REG2(IMX_GPIO_BASE + 0x24, ((x) & 3) << 8)
#define ICR1(x) __REG2(IMX_GPIO_BASE + 0x28, ((x) & 3) << 8)
#define ICR2(x) __REG2(IMX_GPIO_BASE + 0x2c, ((x) & 3) << 8)
#define IMR(x) __REG2(IMX_GPIO_BASE + 0x30, ((x) & 3) << 8)
#define ISR(x) __REG2(IMX_GPIO_BASE + 0x34, ((x) & 3) << 8)
#define GPR(x) __REG2(IMX_GPIO_BASE + 0x38, ((x) & 3) << 8)
#define SWR(x) __REG2(IMX_GPIO_BASE + 0x3c, ((x) & 3) << 8)
#define PUEN(x) __REG2(IMX_GPIO_BASE + 0x40, ((x) & 3) << 8)
#define GPIO_PORT_MAX 3
#define GPIO_PIN_MASK 0x1f
#define GPIO_PORT_MASK (0x3 << 5)
#define GPIO_PORT_SHIFT 5
#define GPIO_PORTA (0<<5)
#define GPIO_PORTB (1<<5)
#define GPIO_PORTC (2<<5)
#define GPIO_PORTD (3<<5)
#define GPIO_OUT (1<<7)
#define GPIO_IN (0<<7)
#define GPIO_PUEN (1<<8)
#define GPIO_PF (0<<9)
#define GPIO_AF (1<<9)
#define GPIO_OCR_SHIFT 10
#define GPIO_OCR_MASK (3<<10)
#define GPIO_AIN (0<<10)
#define GPIO_BIN (1<<10)
#define GPIO_CIN (2<<10)
#define GPIO_DR (3<<10)
#define GPIO_AOUT_SHIFT 12
#define GPIO_AOUT_MASK (3<<12)
#define GPIO_AOUT (0<<12)
#define GPIO_AOUT_ISR (1<<12)
#define GPIO_AOUT_0 (2<<12)
#define GPIO_AOUT_1 (3<<12)
#define GPIO_BOUT_SHIFT 14
#define GPIO_BOUT_MASK (3<<14)
#define GPIO_BOUT (0<<14)
#define GPIO_BOUT_ISR (1<<14)
#define GPIO_BOUT_0 (2<<14)
#define GPIO_BOUT_1 (3<<14)
#define GPIO_GIUS (1<<16)
/* assignements for GPIO alternate/primary functions */
/* FIXME: This list is not completed. The correct directions are
* missing on some (many) pins
*/
#define PA0_AIN_SPI2_CLK ( GPIO_GIUS | GPIO_PORTA | GPIO_OUT | 0 )
#define PA0_AF_ETMTRACESYNC ( GPIO_PORTA | GPIO_AF | 0 )
#define PA1_AOUT_SPI2_RXD ( GPIO_GIUS | GPIO_PORTA | GPIO_IN | 1 )
#define PA1_PF_TIN ( GPIO_PORTA | GPIO_PF | 1 )
#define PA2_PF_PWM0 ( GPIO_PORTA | GPIO_OUT | GPIO_PF | 2 )
#define PA3_PF_CSI_MCLK ( GPIO_PORTA | GPIO_PF | 3 )
#define PA4_PF_CSI_D0 ( GPIO_PORTA | GPIO_PF | 4 )
#define PA5_PF_CSI_D1 ( GPIO_PORTA | GPIO_PF | 5 )
#define PA6_PF_CSI_D2 ( GPIO_PORTA | GPIO_PF | 6 )
#define PA7_PF_CSI_D3 ( GPIO_PORTA | GPIO_PF | 7 )
#define PA8_PF_CSI_D4 ( GPIO_PORTA | GPIO_PF | 8 )
#define PA9_PF_CSI_D5 ( GPIO_PORTA | GPIO_PF | 9 )
#define PA10_PF_CSI_D6 ( GPIO_PORTA | GPIO_PF | 10 )
#define PA11_PF_CSI_D7 ( GPIO_PORTA | GPIO_PF | 11 )
#define PA12_PF_CSI_VSYNC ( GPIO_PORTA | GPIO_PF | 12 )
#define PA13_PF_CSI_HSYNC ( GPIO_PORTA | GPIO_PF | 13 )
#define PA14_PF_CSI_PIXCLK ( GPIO_PORTA | GPIO_PF | 14 )
#define PA15_PF_I2C_SDA ( GPIO_PORTA | GPIO_OUT | GPIO_PF | 15 )
#define PA16_PF_I2C_SCL ( GPIO_PORTA | GPIO_OUT | GPIO_PF | 16 )
#define PA17_AF_ETMTRACEPKT4 ( GPIO_PORTA | GPIO_AF | 17 )
#define PA17_AIN_SPI2_SS ( GPIO_GIUS | GPIO_PORTA | GPIO_OUT | 17 )
#define PA18_AF_ETMTRACEPKT5 ( GPIO_PORTA | GPIO_AF | 18 )
#define PA19_AF_ETMTRACEPKT6 ( GPIO_PORTA | GPIO_AF | 19 )
#define PA20_AF_ETMTRACEPKT7 ( GPIO_PORTA | GPIO_AF | 20 )
#define PA21_PF_A0 ( GPIO_PORTA | GPIO_PF | 21 )
#define PA22_PF_CS4 ( GPIO_PORTA | GPIO_PF | 22 )
#define PA23_PF_CS5 ( GPIO_PORTA | GPIO_PF | 23 )
#define PA24_PF_A16 ( GPIO_PORTA | GPIO_PF | 24 )
#define PA24_AF_ETMTRACEPKT0 ( GPIO_PORTA | GPIO_AF | 24 )
#define PA25_PF_A17 ( GPIO_PORTA | GPIO_PF | 25 )
#define PA25_AF_ETMTRACEPKT1 ( GPIO_PORTA | GPIO_AF | 25 )
#define PA26_PF_A18 ( GPIO_PORTA | GPIO_PF | 26 )
#define PA26_AF_ETMTRACEPKT2 ( GPIO_PORTA | GPIO_AF | 26 )
#define PA27_PF_A19 ( GPIO_PORTA | GPIO_PF | 27 )
#define PA27_AF_ETMTRACEPKT3 ( GPIO_PORTA | GPIO_AF | 27 )
#define PA28_PF_A20 ( GPIO_PORTA | GPIO_PF | 28 )
#define PA28_AF_ETMPIPESTAT0 ( GPIO_PORTA | GPIO_AF | 28 )
#define PA29_PF_A21 ( GPIO_PORTA | GPIO_PF | 29 )
#define PA29_AF_ETMPIPESTAT1 ( GPIO_PORTA | GPIO_AF | 29 )
#define PA30_PF_A22 ( GPIO_PORTA | GPIO_PF | 30 )
#define PA30_AF_ETMPIPESTAT2 ( GPIO_PORTA | GPIO_AF | 30 )
#define PA31_PF_A23 ( GPIO_PORTA | GPIO_PF | 31 )
#define PA31_AF_ETMTRACECLK ( GPIO_PORTA | GPIO_AF | 31 )
#define PB8_PF_SD_DAT0 ( GPIO_PORTB | GPIO_PF | GPIO_PUEN | 8 )
#define PB8_AF_MS_PIO ( GPIO_PORTB | GPIO_AF | 8 )
#define PB9_PF_SD_DAT1 ( GPIO_PORTB | GPIO_PF | GPIO_PUEN | 9 )
#define PB9_AF_MS_PI1 ( GPIO_PORTB | GPIO_AF | 9 )
#define PB10_PF_SD_DAT2 ( GPIO_PORTB | GPIO_PF | GPIO_PUEN | 10 )
#define PB10_AF_MS_SCLKI ( GPIO_PORTB | GPIO_AF | 10 )
#define PB11_PF_SD_DAT3 ( GPIO_PORTB | GPIO_PF | 11 )
#define PB11_AF_MS_SDIO ( GPIO_PORTB | GPIO_AF | 11 )
#define PB12_PF_SD_CLK ( GPIO_PORTB | GPIO_PF | 12 )
#define PB12_AF_MS_SCLK0 ( GPIO_PORTB | GPIO_AF | 12 )
#define PB13_PF_SD_CMD ( GPIO_PORTB | GPIO_PF | GPIO_PUEN | 13 )
#define PB13_AF_MS_BS ( GPIO_PORTB | GPIO_AF | 13 )
#define PB14_AF_SSI_RXFS ( GPIO_PORTB | GPIO_AF | 14 )
#define PB15_AF_SSI_RXCLK ( GPIO_PORTB | GPIO_AF | 15 )
#define PB16_AF_SSI_RXDAT ( GPIO_PORTB | GPIO_IN | GPIO_AF | 16 )
#define PB17_AF_SSI_TXDAT ( GPIO_PORTB | GPIO_OUT | GPIO_AF | 17 )
#define PB18_AF_SSI_TXFS ( GPIO_PORTB | GPIO_AF | 18 )
#define PB19_AF_SSI_TXCLK ( GPIO_PORTB | GPIO_AF | 19 )
#define PB20_PF_USBD_AFE ( GPIO_PORTB | GPIO_PF | 20 )
#define PB21_PF_USBD_OE ( GPIO_PORTB | GPIO_PF | 21 )
#define PB22_PFUSBD_RCV ( GPIO_PORTB | GPIO_PF | 22 )
#define PB23_PF_USBD_SUSPND ( GPIO_PORTB | GPIO_PF | 23 )
#define PB24_PF_USBD_VP ( GPIO_PORTB | GPIO_PF | 24 )
#define PB25_PF_USBD_VM ( GPIO_PORTB | GPIO_PF | 25 )
#define PB26_PF_USBD_VPO ( GPIO_PORTB | GPIO_PF | 26 )
#define PB27_PF_USBD_VMO ( GPIO_PORTB | GPIO_PF | 27 )
#define PB28_PF_UART2_CTS ( GPIO_PORTB | GPIO_OUT | GPIO_PF | 28 )
#define PB29_PF_UART2_RTS ( GPIO_PORTB | GPIO_IN | GPIO_PF | 29 )
#define PB30_PF_UART2_TXD ( GPIO_PORTB | GPIO_OUT | GPIO_PF | 30 )
#define PB31_PF_UART2_RXD ( GPIO_PORTB | GPIO_IN | GPIO_PF | 31 )
#define PC3_PF_SSI_RXFS ( GPIO_PORTC | GPIO_PF | 3 )
#define PC4_PF_SSI_RXCLK ( GPIO_PORTC | GPIO_PF | 4 )
#define PC5_PF_SSI_RXDAT ( GPIO_PORTC | GPIO_IN | GPIO_PF | 5 )
#define PC6_PF_SSI_TXDAT ( GPIO_PORTC | GPIO_OUT | GPIO_PF | 6 )
#define PC7_PF_SSI_TXFS ( GPIO_PORTC | GPIO_PF | 7 )
#define PC8_PF_SSI_TXCLK ( GPIO_PORTC | GPIO_PF | 8 )
#define PC9_PF_UART1_CTS ( GPIO_PORTC | GPIO_OUT | GPIO_PF | 9 )
#define PC10_PF_UART1_RTS ( GPIO_PORTC | GPIO_IN | GPIO_PF | 10 )
#define PC11_PF_UART1_TXD ( GPIO_PORTC | GPIO_OUT | GPIO_PF | 11 )
#define PC12_PF_UART1_RXD ( GPIO_PORTC | GPIO_IN | GPIO_PF | 12 )
#define PC13_PF_SPI1_SPI_RDY ( GPIO_PORTC | GPIO_PF | 13 )
#define PC14_PF_SPI1_SCLK ( GPIO_PORTC | GPIO_PF | 14 )
#define PC15_PF_SPI1_SS ( GPIO_PORTC | GPIO_PF | 15 )
#define PC16_PF_SPI1_MISO ( GPIO_PORTC | GPIO_PF | 16 )
#define PC17_PF_SPI1_MOSI ( GPIO_PORTC | GPIO_PF | 17 )
#define PC24_BIN_UART3_RI ( GPIO_GIUS | GPIO_PORTC | GPIO_OUT | GPIO_BIN | 24 )
#define PC25_BIN_UART3_DSR ( GPIO_GIUS | GPIO_PORTC | GPIO_OUT | GPIO_BIN | 25 )
#define PC26_AOUT_UART3_DTR ( GPIO_GIUS | GPIO_PORTC | GPIO_IN | 26 )
#define PC27_BIN_UART3_DCD ( GPIO_GIUS | GPIO_PORTC | GPIO_OUT | GPIO_BIN | 27 )
#define PC28_BIN_UART3_CTS ( GPIO_GIUS | GPIO_PORTC | GPIO_OUT | GPIO_BIN | 28 )
#define PC29_AOUT_UART3_RTS ( GPIO_GIUS | GPIO_PORTC | GPIO_IN | 29 )
#define PC30_BIN_UART3_TX ( GPIO_GIUS | GPIO_PORTC | GPIO_BIN | 30 )
#define PC31_AOUT_UART3_RX ( GPIO_GIUS | GPIO_PORTC | GPIO_IN | 31)
#define PD6_PF_LSCLK ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 6 )
#define PD7_PF_REV ( GPIO_PORTD | GPIO_PF | 7 )
#define PD7_AF_UART2_DTR ( GPIO_GIUS | GPIO_PORTD | GPIO_IN | GPIO_AF | 7 )
#define PD7_AIN_SPI2_SCLK ( GPIO_GIUS | GPIO_PORTD | GPIO_AIN | 7 )
#define PD8_PF_CLS ( GPIO_PORTD | GPIO_PF | 8 )
#define PD8_AF_UART2_DCD ( GPIO_PORTD | GPIO_OUT | GPIO_AF | 8 )
#define PD8_AIN_SPI2_SS ( GPIO_GIUS | GPIO_PORTD | GPIO_AIN | 8 )
#define PD9_PF_PS ( GPIO_PORTD | GPIO_PF | 9 )
#define PD9_AF_UART2_RI ( GPIO_PORTD | GPIO_OUT | GPIO_AF | 9 )
#define PD9_AOUT_SPI2_RXD ( GPIO_GIUS | GPIO_PORTD | GPIO_IN | 9 )
#define PD10_PF_SPL_SPR ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 10 )
#define PD10_AF_UART2_DSR ( GPIO_PORTD | GPIO_OUT | GPIO_AF | 10 )
#define PD10_AIN_SPI2_TXD ( GPIO_GIUS | GPIO_PORTD | GPIO_OUT | 10 )
#define PD11_PF_CONTRAST ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 11 )
#define PD12_PF_ACD_OE ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 12 )
#define PD13_PF_LP_HSYNC ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 13 )
#define PD14_PF_FLM_VSYNC ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 14 )
#define PD15_PF_LD0 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 15 )
#define PD16_PF_LD1 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 16 )
#define PD17_PF_LD2 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 17 )
#define PD18_PF_LD3 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 18 )
#define PD19_PF_LD4 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 19 )
#define PD20_PF_LD5 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 20 )
#define PD21_PF_LD6 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 21 )
#define PD22_PF_LD7 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 22 )
#define PD23_PF_LD8 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 23 )
#define PD24_PF_LD9 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 24 )
#define PD25_PF_LD10 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 25 )
#define PD26_PF_LD11 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 26 )
#define PD27_PF_LD12 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 27 )
#define PD28_PF_LD13 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 28 )
#define PD29_PF_LD14 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 29 )
#define PD30_PF_LD15 ( GPIO_PORTD | GPIO_OUT | GPIO_PF | 30 )
#define PD31_PF_TMR2OUT ( GPIO_PORTD | GPIO_PF | 31 )
#define PD31_BIN_SPI2_TXD ( GPIO_GIUS | GPIO_PORTD | GPIO_BIN | 31 )
/*
* PWM controller
*/
#define PWMC __REG(IMX_PWM_BASE + 0x00) /* PWM Control Register */
#define PWMS __REG(IMX_PWM_BASE + 0x04) /* PWM Sample Register */
#define PWMP __REG(IMX_PWM_BASE + 0x08) /* PWM Period Register */
#define PWMCNT __REG(IMX_PWM_BASE + 0x0C) /* PWM Counter Register */
#define PWMC_HCTR (0x01<<18) /* Halfword FIFO Data Swapping */
#define PWMC_BCTR (0x01<<17) /* Byte FIFO Data Swapping */
#define PWMC_SWR (0x01<<16) /* Software Reset */
#define PWMC_CLKSRC (0x01<<15) /* Clock Source */
#define PWMC_PRESCALER(x) (((x-1) & 0x7F) << 8) /* PRESCALER */
#define PWMC_IRQ (0x01<< 7) /* Interrupt Request */
#define PWMC_IRQEN (0x01<< 6) /* Interrupt Request Enable */
#define PWMC_FIFOAV (0x01<< 5) /* FIFO Available */
#define PWMC_EN (0x01<< 4) /* Enables/Disables the PWM */
#define PWMC_REPEAT(x) (((x) & 0x03) << 2) /* Sample Repeats */
#define PWMC_CLKSEL(x) (((x) & 0x03) << 0) /* Clock Selection */
#define PWMS_SAMPLE(x) ((x) & 0xFFFF) /* Contains a two-sample word */
#define PWMP_PERIOD(x) ((x) & 0xFFFF) /* Represents the PWM's period */
#define PWMC_COUNTER(x) ((x) & 0xFFFF) /* Represents the current count value */
/*
* DMA Controller
*/
#define DCR __REG(IMX_DMAC_BASE +0x00) /* DMA Control Register */
#define DISR __REG(IMX_DMAC_BASE +0x04) /* DMA Interrupt status Register */
#define DIMR __REG(IMX_DMAC_BASE +0x08) /* DMA Interrupt mask Register */
#define DBTOSR __REG(IMX_DMAC_BASE +0x0c) /* DMA Burst timeout status Register */
#define DRTOSR __REG(IMX_DMAC_BASE +0x10) /* DMA Request timeout Register */
#define DSESR __REG(IMX_DMAC_BASE +0x14) /* DMA Transfer Error Status Register */
#define DBOSR __REG(IMX_DMAC_BASE +0x18) /* DMA Buffer overflow status Register */
#define DBTOCR __REG(IMX_DMAC_BASE +0x1c) /* DMA Burst timeout control Register */
#define WSRA __REG(IMX_DMAC_BASE +0x40) /* W-Size Register A */
#define XSRA __REG(IMX_DMAC_BASE +0x44) /* X-Size Register A */
#define YSRA __REG(IMX_DMAC_BASE +0x48) /* Y-Size Register A */
#define WSRB __REG(IMX_DMAC_BASE +0x4c) /* W-Size Register B */
#define XSRB __REG(IMX_DMAC_BASE +0x50) /* X-Size Register B */
#define YSRB __REG(IMX_DMAC_BASE +0x54) /* Y-Size Register B */
#define SAR(x) __REG2( IMX_DMAC_BASE + 0x80, (x) << 6) /* Source Address Registers */
#define DAR(x) __REG2( IMX_DMAC_BASE + 0x84, (x) << 6) /* Destination Address Registers */
#define CNTR(x) __REG2( IMX_DMAC_BASE + 0x88, (x) << 6) /* Count Registers */
#define CCR(x) __REG2( IMX_DMAC_BASE + 0x8c, (x) << 6) /* Control Registers */
#define RSSR(x) __REG2( IMX_DMAC_BASE + 0x90, (x) << 6) /* Request source select Registers */
#define BLR(x) __REG2( IMX_DMAC_BASE + 0x94, (x) << 6) /* Burst length Registers */
#define RTOR(x) __REG2( IMX_DMAC_BASE + 0x98, (x) << 6) /* Request timeout Registers */
#define BUCR(x) __REG2( IMX_DMAC_BASE + 0x98, (x) << 6) /* Bus Utilization Registers */
#define DCR_DRST (1<<1)
#define DCR_DEN (1<<0)
#define DBTOCR_EN (1<<15)
#define DBTOCR_CNT(x) ((x) & 0x7fff )
#define CNTR_CNT(x) ((x) & 0xffffff )
#define CCR_DMOD_LINEAR ( 0x0 << 12 )
#define CCR_DMOD_2D ( 0x1 << 12 )
#define CCR_DMOD_FIFO ( 0x2 << 12 )
#define CCR_DMOD_EOBFIFO ( 0x3 << 12 )
#define CCR_SMOD_LINEAR ( 0x0 << 10 )
#define CCR_SMOD_2D ( 0x1 << 10 )
#define CCR_SMOD_FIFO ( 0x2 << 10 )
#define CCR_SMOD_EOBFIFO ( 0x3 << 10 )
#define CCR_MDIR_DEC (1<<9)
#define CCR_MSEL_B (1<<8)
#define CCR_DSIZ_32 ( 0x0 << 6 )
#define CCR_DSIZ_8 ( 0x1 << 6 )
#define CCR_DSIZ_16 ( 0x2 << 6 )
#define CCR_SSIZ_32 ( 0x0 << 4 )
#define CCR_SSIZ_8 ( 0x1 << 4 )
#define CCR_SSIZ_16 ( 0x2 << 4 )
#define CCR_REN (1<<3)
#define CCR_RPT (1<<2)
#define CCR_FRC (1<<1)
#define CCR_CEN (1<<0)
#define RTOR_EN (1<<15)
#define RTOR_CLK (1<<14)
#define RTOR_PSC (1<<13)
/*
* Interrupt controller
*/
#define IMX_INTCNTL __REG(IMX_AITC_BASE+0x00)
#define INTCNTL_FIAD (1<<19)
#define INTCNTL_NIAD (1<<20)
#define IMX_NIMASK __REG(IMX_AITC_BASE+0x04)
#define IMX_INTENNUM __REG(IMX_AITC_BASE+0x08)
#define IMX_INTDISNUM __REG(IMX_AITC_BASE+0x0c)
#define IMX_INTENABLEH __REG(IMX_AITC_BASE+0x10)
#define IMX_INTENABLEL __REG(IMX_AITC_BASE+0x14)
/*
* General purpose timers
*/
#define IMX_TCTL(x) __REG( 0x00 + (x))
#define TCTL_SWR (1<<15)
#define TCTL_FRR (1<<8)
#define TCTL_CAP_RIS (1<<6)
#define TCTL_CAP_FAL (2<<6)
#define TCTL_CAP_RIS_FAL (3<<6)
#define TCTL_OM (1<<5)
#define TCTL_IRQEN (1<<4)
#define TCTL_CLK_PCLK1 (1<<1)
#define TCTL_CLK_PCLK1_16 (2<<1)
#define TCTL_CLK_TIN (3<<1)
#define TCTL_CLK_32 (4<<1)
#define TCTL_TEN (1<<0)
#define IMX_TPRER(x) __REG( 0x04 + (x))
#define IMX_TCMP(x) __REG( 0x08 + (x))
#define IMX_TCR(x) __REG( 0x0C + (x))
#define IMX_TCN(x) __REG( 0x10 + (x))
#define IMX_TSTAT(x) __REG( 0x14 + (x))
#define TSTAT_CAPT (1<<1)
#define TSTAT_COMP (1<<0)
#endif // _IMX_REGS_H

12
arch/arm/mach-imx/include/mach/imx-uart.h
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@ -1,12 +0,0 @@
#ifndef ASMARM_ARCH_UART_H
#define ASMARM_ARCH_UART_H
#define IMXUART_HAVE_RTSCTS (1<<0)
struct imxuart_platform_data {
int (*init)(struct platform_device *pdev);
void (*exit)(struct platform_device *pdev);
unsigned int flags;
};
#endif

28
arch/arm/mach-imx/include/mach/io.h
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@ -1,28 +0,0 @@
/*
* arch/arm/mach-imxads/include/mach/io.h
*
* Copyright (C) 1999 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xffffffff
#define __io(a) __typesafe_io(a)
#define __mem_pci(a) (a)
#endif

121
arch/arm/mach-imx/include/mach/irqs.h
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@ -1,121 +0,0 @@
/*
* arch/arm/mach-imxads/include/mach/irqs.h
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ARM_IRQS_H__
#define __ARM_IRQS_H__
/* Use the imx definitions */
#include <mach/hardware.h>
/*
* IMX Interrupt numbers
*
*/
#define INT_SOFTINT 0
#define CSI_INT 6
#define DSPA_MAC_INT 7
#define DSPA_INT 8
#define COMP_INT 9
#define MSHC_XINT 10
#define GPIO_INT_PORTA 11
#define GPIO_INT_PORTB 12
#define GPIO_INT_PORTC 13
#define LCDC_INT 14
#define SIM_INT 15
#define SIM_DATA_INT 16
#define RTC_INT 17
#define RTC_SAMINT 18
#define UART2_MINT_PFERR 19
#define UART2_MINT_RTS 20
#define UART2_MINT_DTR 21
#define UART2_MINT_UARTC 22
#define UART2_MINT_TX 23
#define UART2_MINT_RX 24
#define UART1_MINT_PFERR 25
#define UART1_MINT_RTS 26
#define UART1_MINT_DTR 27
#define UART1_MINT_UARTC 28
#define UART1_MINT_TX 29
#define UART1_MINT_RX 30
#define VOICE_DAC_INT 31
#define VOICE_ADC_INT 32
#define PEN_DATA_INT 33
#define PWM_INT 34
#define SDHC_INT 35
#define I2C_INT 39
#define CSPI_INT 41
#define SSI_TX_INT 42
#define SSI_TX_ERR_INT 43
#define SSI_RX_INT 44
#define SSI_RX_ERR_INT 45
#define TOUCH_INT 46
#define USBD_INT0 47
#define USBD_INT1 48
#define USBD_INT2 49
#define USBD_INT3 50
#define USBD_INT4 51
#define USBD_INT5 52
#define USBD_INT6 53
#define BTSYS_INT 55
#define BTTIM_INT 56
#define BTWUI_INT 57
#define TIM2_INT 58
#define TIM1_INT 59
#define DMA_ERR 60
#define DMA_INT 61
#define GPIO_INT_PORTD 62
#define IMX_IRQS (64)
/* note: the IMX has four gpio ports (A-D), but only
* the following pins are connected to the outside
* world:
*
* PORT A: bits 0-31
* PORT B: bits 8-31
* PORT C: bits 3-17
* PORT D: bits 6-31
*
* We map these interrupts straight on. As a result we have
* several holes in the interrupt mapping. We do this for two
* reasons:
* - mapping the interrupts without holes would get
* far more complicated
* - Motorola could well decide to bring some processor
* with more pins connected
*/
#define IRQ_GPIOA(x) (IMX_IRQS + x)
#define IRQ_GPIOB(x) (IRQ_GPIOA(32) + x)
#define IRQ_GPIOC(x) (IRQ_GPIOB(32) + x)
#define IRQ_GPIOD(x) (IRQ_GPIOC(32) + x)
/* decode irq number to use with IMR(x), ISR(x) and friends */
#define IRQ_TO_REG(irq) ((irq - IMX_IRQS) >> 5)
/* all normal IRQs can be FIQs */
#define FIQ_START 0
/* switch betwean IRQ and FIQ */
extern int imx_set_irq_fiq(unsigned int irq, unsigned int type);
#define NR_IRQS (IRQ_GPIOD(32) + 1)
#define IRQ_GPIO(x)
#endif

26
arch/arm/mach-imx/include/mach/memory.h
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@ -1,26 +0,0 @@
/*
* arch/arm/mach-imx/include/mach/memory.h
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_MMU_H
#define __ASM_ARCH_MMU_H
#define PHYS_OFFSET UL(0x08000000)
#endif

15
arch/arm/mach-imx/include/mach/mmc.h
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@ -1,15 +0,0 @@
#ifndef ASMARM_ARCH_MMC_H
#define ASMARM_ARCH_MMC_H
#include <linux/mmc/host.h>
struct device;
struct imxmmc_platform_data {
int (*card_present)(struct device *);
int (*get_ro)(struct device *);
};
extern void imx_set_mmc_info(struct imxmmc_platform_data *info);
#endif

36
arch/arm/mach-imx/include/mach/mx1ads.h
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@ -1,36 +0,0 @@
/*
* arch/arm/mach-imx/include/mach/mx1ads.h
*
* Copyright (C) 2004 Robert Schwebel, Pengutronix
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_ARCH_MX1ADS_H
#define __ASM_ARCH_MX1ADS_H
/* ------------------------------------------------------------------------ */
/* Memory Map for the M9328MX1ADS (MX1ADS) Board */
/* ------------------------------------------------------------------------ */
#define MX1ADS_FLASH_PHYS 0x10000000
#define MX1ADS_FLASH_SIZE (16*1024*1024)
#define IMX_FB_PHYS (0x0C000000 - 0x40000)
#define CLK32 32000
#endif /* __ASM_ARCH_MX1ADS_H */

72
arch/arm/mach-imx/include/mach/spi_imx.h
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@ -1,72 +0,0 @@
/*
* arch/arm/mach-imx/include/mach/spi_imx.h
*
* Copyright (C) 2006 SWAPP
* Andrea Paterniani <a.paterniani@swapp-eng.it>
*
* Initial version inspired by:
* linux-2.6.17-rc3-mm1/arch/arm/mach-pxa/include/mach/pxa2xx_spi.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef SPI_IMX_H_
#define SPI_IMX_H_
/*-------------------------------------------------------------------------*/
/**
* struct spi_imx_master - device.platform_data for SPI controller devices.
* @num_chipselect: chipselects are used to distinguish individual
* SPI slaves, and are numbered from zero to num_chipselects - 1.
* each slave has a chipselect signal, but it's common that not
* every chipselect is connected to a slave.
* @enable_dma: if true enables DMA driven transfers.
*/
struct spi_imx_master {
u8 num_chipselect;
u8 enable_dma:1;
};
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*/
/**
* struct spi_imx_chip - spi_board_info.controller_data for SPI
* slave devices, copied to spi_device.controller_data.
* @enable_loopback : used for test purpouse to internally connect RX and TX
* sections.
* @enable_dma : enables dma transfer (provided that controller driver has
* dma enabled too).
* @ins_ss_pulse : enable /SS pulse insertion between SPI burst.
* @bclk_wait : number of bclk waits between each bits_per_word SPI burst.
* @cs_control : function pointer to board-specific function to assert/deassert
* I/O port to control HW generation of devices chip-select.
*/
struct spi_imx_chip {
u8 enable_loopback:1;
u8 enable_dma:1;
u8 ins_ss_pulse:1;
u16 bclk_wait:15;
void (*cs_control)(u32 control);
};
/* Chip-select state */
#define SPI_CS_ASSERT (1 << 0)
#define SPI_CS_DEASSERT (1 << 1)
/*-------------------------------------------------------------------------*/
#endif /* SPI_IMX_H_*/

40
arch/arm/mach-imx/include/mach/system.h
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@ -1,40 +0,0 @@
/*
* arch/arm/mach-imxads/include/mach/system.h
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H
static void
arch_idle(void)
{
/*
* This should do all the clock switching
* and wait for interrupt tricks
*/
cpu_do_idle();
}
static inline void
arch_reset(char mode, const char *cmd)
{
cpu_reset(0);
}
#endif

26
arch/arm/mach-imx/include/mach/timex.h
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@ -1,26 +0,0 @@
/*
* linux/include/asm-arm/imx/timex.h
*
* Copyright (C) 1999 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_TIMEX_H
#define __ASM_ARCH_TIMEX_H
#define CLOCK_TICK_RATE (16000000)
#endif

71
arch/arm/mach-imx/include/mach/uncompress.h
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@ -1,71 +0,0 @@
/*
* arch/arm/mach-imxads/include/mach/uncompress.h
*
*
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) Shane Nay (shane@minirl.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
#define UART1_BASE 0x206000
#define UART2_BASE 0x207000
#define USR2 0x98
#define USR2_TXFE (1<<14)
#define TXR 0x40
#define UCR1 0x80
#define UCR1_UARTEN 1
/*
* The following code assumes the serial port has already been
* initialized by the bootloader. We search for the first enabled
* port in the most probable order. If you didn't setup a port in
* your bootloader then nothing will appear (which might be desired).
*
* This does not append a newline
*/
static void putc(int c)
{
unsigned long serial_port;
do {
serial_port = UART1_BASE;
if ( UART(UCR1) & UCR1_UARTEN )
break;
serial_port = UART2_BASE;
if ( UART(UCR1) & UCR1_UARTEN )
break;
return;
} while(0);
while (!(UART(USR2) & USR2_TXFE))
barrier();
UART(TXR) = c;
}
static inline void flush(void)
{
}
/*
* nothing to do
*/
#define arch_decomp_setup()
#define arch_decomp_wdog()

20
arch/arm/mach-imx/include/mach/vmalloc.h
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@ -1,20 +0,0 @@
/*
* arch/arm/mach-imx/include/mach/vmalloc.h
*
* Copyright (C) 2000 Russell King.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define VMALLOC_END (PAGE_OFFSET + 0x10000000)

311
arch/arm/mach-imx/irq.c
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@ -1,311 +0,0 @@
/*
* linux/arch/arm/mach-imx/irq.c
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 03/03/2004 Sascha Hauer <sascha@saschahauer.de>
* Copied from the motorola bsp package and added gpio demux
* interrupt handler
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach/irq.h>
/*
*
* We simply use the ENABLE DISABLE registers inside of the IMX
* to turn on/off specific interrupts.
*
*/
#define INTCNTL_OFF 0x00
#define NIMASK_OFF 0x04
#define INTENNUM_OFF 0x08
#define INTDISNUM_OFF 0x0C
#define INTENABLEH_OFF 0x10
#define INTENABLEL_OFF 0x14
#define INTTYPEH_OFF 0x18
#define INTTYPEL_OFF 0x1C
#define NIPRIORITY_OFF(x) (0x20+4*(7-(x)))
#define NIVECSR_OFF 0x40
#define FIVECSR_OFF 0x44
#define INTSRCH_OFF 0x48
#define INTSRCL_OFF 0x4C
#define INTFRCH_OFF 0x50
#define INTFRCL_OFF 0x54
#define NIPNDH_OFF 0x58
#define NIPNDL_OFF 0x5C
#define FIPNDH_OFF 0x60
#define FIPNDL_OFF 0x64
#define VA_AITC_BASE IO_ADDRESS(IMX_AITC_BASE)
#define IMX_AITC_INTCNTL (VA_AITC_BASE + INTCNTL_OFF)
#define IMX_AITC_NIMASK (VA_AITC_BASE + NIMASK_OFF)
#define IMX_AITC_INTENNUM (VA_AITC_BASE + INTENNUM_OFF)
#define IMX_AITC_INTDISNUM (VA_AITC_BASE + INTDISNUM_OFF)
#define IMX_AITC_INTENABLEH (VA_AITC_BASE + INTENABLEH_OFF)
#define IMX_AITC_INTENABLEL (VA_AITC_BASE + INTENABLEL_OFF)
#define IMX_AITC_INTTYPEH (VA_AITC_BASE + INTTYPEH_OFF)
#define IMX_AITC_INTTYPEL (VA_AITC_BASE + INTTYPEL_OFF)
#define IMX_AITC_NIPRIORITY(x) (VA_AITC_BASE + NIPRIORITY_OFF(x))
#define IMX_AITC_NIVECSR (VA_AITC_BASE + NIVECSR_OFF)
#define IMX_AITC_FIVECSR (VA_AITC_BASE + FIVECSR_OFF)
#define IMX_AITC_INTSRCH (VA_AITC_BASE + INTSRCH_OFF)
#define IMX_AITC_INTSRCL (VA_AITC_BASE + INTSRCL_OFF)
#define IMX_AITC_INTFRCH (VA_AITC_BASE + INTFRCH_OFF)
#define IMX_AITC_INTFRCL (VA_AITC_BASE + INTFRCL_OFF)
#define IMX_AITC_NIPNDH (VA_AITC_BASE + NIPNDH_OFF)
#define IMX_AITC_NIPNDL (VA_AITC_BASE + NIPNDL_OFF)
#define IMX_AITC_FIPNDH (VA_AITC_BASE + FIPNDH_OFF)
#define IMX_AITC_FIPNDL (VA_AITC_BASE + FIPNDL_OFF)
#if 0
#define DEBUG_IRQ(fmt...) printk(fmt)
#else
#define DEBUG_IRQ(fmt...) do { } while (0)
#endif
static void
imx_mask_irq(unsigned int irq)
{
__raw_writel(irq, IMX_AITC_INTDISNUM);
}
static void
imx_unmask_irq(unsigned int irq)
{
__raw_writel(irq, IMX_AITC_INTENNUM);
}
#ifdef CONFIG_FIQ
int imx_set_irq_fiq(unsigned int irq, unsigned int type)
{
unsigned int irqt;
if (irq >= IMX_IRQS)
return -EINVAL;
if (irq < IMX_IRQS / 2) {
irqt = __raw_readl(IMX_AITC_INTTYPEL) & ~(1 << irq);
__raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEL);
} else {
irq -= IMX_IRQS / 2;
irqt = __raw_readl(IMX_AITC_INTTYPEH) & ~(1 << irq);
__raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEH);
}
return 0;
}
EXPORT_SYMBOL(imx_set_irq_fiq);
#endif /* CONFIG_FIQ */
static int
imx_gpio_irq_type(unsigned int _irq, unsigned int type)
{
unsigned int irq_type = 0, irq, reg, bit;
irq = _irq - IRQ_GPIOA(0);
reg = irq >> 5;
bit = 1 << (irq % 32);
if (type == IRQ_TYPE_PROBE) {
/* Don't mess with enabled GPIOs using preconfigured edges or
GPIOs set to alternate function during probe */
/* TODO: support probe */
// if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx]) &
// GPIO_bit(gpio))
// return 0;
// if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))
// return 0;
// type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
}
GIUS(reg) |= bit;
DDIR(reg) &= ~(bit);
DEBUG_IRQ("setting type of irq %d to ", _irq);
if (type & IRQ_TYPE_EDGE_RISING) {
DEBUG_IRQ("rising edges\n");
irq_type = 0x0;
}
if (type & IRQ_TYPE_EDGE_FALLING) {
DEBUG_IRQ("falling edges\n");
irq_type = 0x1;
}
if (type & IRQ_TYPE_LEVEL_LOW) {
DEBUG_IRQ("low level\n");
irq_type = 0x3;
}
if (type & IRQ_TYPE_LEVEL_HIGH) {
DEBUG_IRQ("high level\n");
irq_type = 0x2;
}
if (irq % 32 < 16) {
ICR1(reg) = (ICR1(reg) & ~(0x3 << ((irq % 16) * 2))) |
(irq_type << ((irq % 16) * 2));
} else {
ICR2(reg) = (ICR2(reg) & ~(0x3 << ((irq % 16) * 2))) |
(irq_type << ((irq % 16) * 2));
}
return 0;
}
static void
imx_gpio_ack_irq(unsigned int irq)
{
DEBUG_IRQ("%s: irq %d\n", __func__, irq);
ISR(IRQ_TO_REG(irq)) = 1 << ((irq - IRQ_GPIOA(0)) % 32);
}
static void
imx_gpio_mask_irq(unsigned int irq)
{
DEBUG_IRQ("%s: irq %d\n", __func__, irq);
IMR(IRQ_TO_REG(irq)) &= ~( 1 << ((irq - IRQ_GPIOA(0)) % 32));
}
static void
imx_gpio_unmask_irq(unsigned int irq)
{
DEBUG_IRQ("%s: irq %d\n", __func__, irq);
IMR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
}
static void
imx_gpio_handler(unsigned int mask, unsigned int irq,
struct irq_desc *desc)
{
while (mask) {
if (mask & 1) {
DEBUG_IRQ("handling irq %d\n", irq);
generic_handle_irq(irq);
}
irq++;
mask >>= 1;
}
}
static void
imx_gpioa_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
{
unsigned int mask, irq;
mask = ISR(0);
irq = IRQ_GPIOA(0);
imx_gpio_handler(mask, irq, desc);
}
static void
imx_gpiob_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
{
unsigned int mask, irq;
mask = ISR(1);
irq = IRQ_GPIOB(0);
imx_gpio_handler(mask, irq, desc);
}
static void
imx_gpioc_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
{
unsigned int mask, irq;
mask = ISR(2);
irq = IRQ_GPIOC(0);
imx_gpio_handler(mask, irq, desc);
}
static void
imx_gpiod_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
{
unsigned int mask, irq;
mask = ISR(3);
irq = IRQ_GPIOD(0);
imx_gpio_handler(mask, irq, desc);
}
static struct irq_chip imx_internal_chip = {
.name = "MPU",
.ack = imx_mask_irq,
.mask = imx_mask_irq,
.unmask = imx_unmask_irq,
};
static struct irq_chip imx_gpio_chip = {
.name = "GPIO",
.ack = imx_gpio_ack_irq,
.mask = imx_gpio_mask_irq,
.unmask = imx_gpio_unmask_irq,
.set_type = imx_gpio_irq_type,
};
void __init
imx_init_irq(void)
{
unsigned int irq;
DEBUG_IRQ("Initializing imx interrupts\n");
/* Disable all interrupts initially. */
/* Do not rely on the bootloader. */
__raw_writel(0, IMX_AITC_INTENABLEH);
__raw_writel(0, IMX_AITC_INTENABLEL);
/* Mask all GPIO interrupts as well */
IMR(0) = 0;
IMR(1) = 0;
IMR(2) = 0;
IMR(3) = 0;
for (irq = 0; irq < IMX_IRQS; irq++) {
set_irq_chip(irq, &imx_internal_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
for (irq = IRQ_GPIOA(0); irq < IRQ_GPIOD(32); irq++) {
set_irq_chip(irq, &imx_gpio_chip);
set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID);
}
set_irq_chained_handler(GPIO_INT_PORTA, imx_gpioa_demux_handler);
set_irq_chained_handler(GPIO_INT_PORTB, imx_gpiob_demux_handler);
set_irq_chained_handler(GPIO_INT_PORTC, imx_gpioc_demux_handler);
set_irq_chained_handler(GPIO_INT_PORTD, imx_gpiod_demux_handler);
/* Release masking of interrupts according to priority */
__raw_writel(-1, IMX_AITC_NIMASK);
#ifdef CONFIG_FIQ
/* Initialize FIQ */
init_FIQ();
#endif
}

53
arch/arm/mach-imx/leds-mx1ads.c
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@ -1,53 +0,0 @@
/*
* linux/arch/arm/mach-imx/leds-mx1ads.c
*
* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
*
* Original (leds-footbridge.c) by Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/system.h>
#include <asm/leds.h>
#include "leds.h"
/*
* The MX1ADS Board has only one usable LED,
* so select only the timer led or the
* cpu usage led
*/
void
mx1ads_leds_event(led_event_t ledevt)
{
unsigned long flags;
local_irq_save(flags);
switch (ledevt) {
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
DR(0) &= ~(1<<2);
break;
case led_idle_end:
DR(0) |= 1<<2;
break;
#endif
#ifdef CONFIG_LEDS_TIMER
case led_timer:
DR(0) ^= 1<<2;
#endif
default:
break;
}
local_irq_restore(flags);
}

31
arch/arm/mach-imx/leds.c
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/*
* linux/arch/arm/mach-imx/leds.c
*
* Copyright (C) 2004 Sascha Hauer <sascha@saschahauer.de>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include "leds.h"
static int __init
leds_init(void)
{
if (machine_is_mx1ads()) {
leds_event = mx1ads_leds_event;
}
return 0;
}
__initcall(leds_init);

9
arch/arm/mach-imx/leds.h
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@ -1,9 +0,0 @@
/*
* arch/arm/mach-imx/leds.h
*
* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
*
* blinky lights for IMX-based systems
*
*/
extern void mx1ads_leds_event(led_event_t evt);

180
arch/arm/mach-imx/mx1ads.c
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@ -1,180 +0,0 @@
/*
* arch/arm/mach-imx/mx1ads.c
*
* Initially based on:
* linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
*
* 2004 (c) MontaVista Software, Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/mach/map.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/mmc.h>
#include <mach/imx-uart.h>
#include <linux/interrupt.h>
#include "generic.h"
static struct resource cs89x0_resources[] = {
[0] = {
.start = IMX_CS4_PHYS + 0x300,
.end = IMX_CS4_PHYS + 0x300 + 16,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_GPIOC(17),
.end = IRQ_GPIOC(17),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device cs89x0_device = {
.name = "cirrus-cs89x0",
.num_resources = ARRAY_SIZE(cs89x0_resources),
.resource = cs89x0_resources,
};
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct resource imx_uart1_resources[] = {
[0] = {
.start = 0x00206000,
.end = 0x002060FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART1_MINT_RX),
.end = (UART1_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART1_MINT_TX),
.end = (UART1_MINT_TX),
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART1_MINT_RTS,
.end = UART1_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart1_device = {
.name = "imx-uart",
.id = 0,
.num_resources = ARRAY_SIZE(imx_uart1_resources),
.resource = imx_uart1_resources,
.dev = {
.platform_data = &uart_pdata,
}
};
static struct resource imx_uart2_resources[] = {
[0] = {
.start = 0x00207000,
.end = 0x002070FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART2_MINT_RX),
.end = (UART2_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART2_MINT_TX),
.end = (UART2_MINT_TX),
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART2_MINT_RTS,
.end = UART2_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart2_device = {
.name = "imx-uart",
.id = 1,
.num_resources = ARRAY_SIZE(imx_uart2_resources),
.resource = imx_uart2_resources,
.dev = {
.platform_data = &uart_pdata,
}
};
static struct platform_device *devices[] __initdata = {
&cs89x0_device,
&imx_uart1_device,
&imx_uart2_device,
};
#if defined(CONFIG_MMC_IMX) || defined(CONFIG_MMC_IMX_MODULE)
static int mx1ads_mmc_card_present(struct device *dev)
{
/* MMC/SD Card Detect is PB 20 on MX1ADS V1.0.7 */
return (SSR(1) & (1 << 20) ? 0 : 1);
}
static struct imxmmc_platform_data mx1ads_mmc_info = {
.card_present = mx1ads_mmc_card_present,
};
#endif
static void __init
mx1ads_init(void)
{
#ifdef CONFIG_LEDS
imx_gpio_mode(GPIO_PORTA | GPIO_OUT | 2);
#endif
#if defined(CONFIG_MMC_IMX) || defined(CONFIG_MMC_IMX_MODULE)
/* SD/MMC card detect */
imx_gpio_mode(GPIO_PORTB | GPIO_GIUS | GPIO_IN | 20);
imx_set_mmc_info(&mx1ads_mmc_info);
#endif
imx_gpio_mode(PC9_PF_UART1_CTS);
imx_gpio_mode(PC10_PF_UART1_RTS);
imx_gpio_mode(PC11_PF_UART1_TXD);
imx_gpio_mode(PC12_PF_UART1_RXD);
imx_gpio_mode(PB28_PF_UART2_CTS);
imx_gpio_mode(PB29_PF_UART2_RTS);
imx_gpio_mode(PB30_PF_UART2_TXD);
imx_gpio_mode(PB31_PF_UART2_RXD);
platform_add_devices(devices, ARRAY_SIZE(devices));
}
static void __init
mx1ads_map_io(void)
{
imx_map_io();
}
MACHINE_START(MX1ADS, "Motorola MX1ADS")
/* Maintainer: Sascha Hauer, Pengutronix */
.phys_io = 0x00200000,
.io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
.boot_params = 0x08000100,
.map_io = mx1ads_map_io,
.init_irq = imx_init_irq,
.timer = &imx_timer,
.init_machine = mx1ads_init,
MACHINE_END

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arch/arm/mach-imx/time.c
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/*
* linux/arch/arm/mach-imx/time.c
*
* Copyright (C) 2000-2001 Deep Blue Solutions
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright (C) 2006-2007 Pavel Pisa (ppisa@pikron.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/time.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/leds.h>
#include <asm/irq.h>
#include <asm/mach/time.h>
/* Use timer 1 as system timer */
#define TIMER_BASE IMX_TIM1_BASE
static struct clock_event_device clockevent_imx;
static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
/*
* IRQ handler for the timer
*/
static irqreturn_t
imx_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &clockevent_imx;
uint32_t tstat;
irqreturn_t ret = IRQ_NONE;
/* clear the interrupt */
tstat = IMX_TSTAT(TIMER_BASE);
IMX_TSTAT(TIMER_BASE) = 0;
if (tstat & TSTAT_COMP) {
evt->event_handler(evt);
ret = IRQ_HANDLED;
}
return ret;
}
static struct irqaction imx_timer_irq = {
.name = "i.MX Timer Tick",
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
.handler = imx_timer_interrupt,
};
/*
* Set up timer hardware into expected mode and state.
*/
static void __init imx_timer_hardware_init(void)
{
/*
* Initialise to a known state (all timers off, and timing reset)
*/
IMX_TCTL(TIMER_BASE) = 0;
IMX_TPRER(TIMER_BASE) = 0;
IMX_TCTL(TIMER_BASE) = TCTL_FRR | TCTL_CLK_PCLK1 | TCTL_TEN;
}
cycle_t imx_get_cycles(struct clocksource *cs)
{
return IMX_TCN(TIMER_BASE);
}
static struct clocksource clocksource_imx = {
.name = "imx_timer1",
.rating = 200,
.read = imx_get_cycles,
.mask = 0xFFFFFFFF,
.shift = 20,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static int __init imx_clocksource_init(unsigned long rate)
{
clocksource_imx.mult =
clocksource_hz2mult(rate, clocksource_imx.shift);
clocksource_register(&clocksource_imx);
return 0;
}
static int imx_set_next_event(unsigned long evt,
struct clock_event_device *unused)
{
unsigned long tcmp;
tcmp = IMX_TCN(TIMER_BASE) + evt;
IMX_TCMP(TIMER_BASE) = tcmp;
return (int32_t)(tcmp - IMX_TCN(TIMER_BASE)) < 0 ? -ETIME : 0;
}
#ifdef DEBUG
static const char *clock_event_mode_label[]={
[CLOCK_EVT_MODE_PERIODIC] = "CLOCK_EVT_MODE_PERIODIC",
[CLOCK_EVT_MODE_ONESHOT] = "CLOCK_EVT_MODE_ONESHOT",
[CLOCK_EVT_MODE_SHUTDOWN] = "CLOCK_EVT_MODE_SHUTDOWN",
[CLOCK_EVT_MODE_UNUSED] = "CLOCK_EVT_MODE_UNUSED"
};
#endif /*DEBUG*/
static void imx_set_mode(enum clock_event_mode mode, struct clock_event_device *evt)
{
unsigned long flags;
/*
* The timer interrupt generation is disabled at least
* for enough time to call imx_set_next_event()
*/
local_irq_save(flags);
/* Disable interrupt in GPT module */
IMX_TCTL(TIMER_BASE) &= ~TCTL_IRQEN;
if (mode != clockevent_mode) {
/* Set event time into far-far future */
IMX_TCMP(TIMER_BASE) = IMX_TCN(TIMER_BASE) - 3;
/* Clear pending interrupt */
IMX_TSTAT(TIMER_BASE) &= ~TSTAT_COMP;
}
#ifdef DEBUG
printk(KERN_INFO "imx_set_mode: changing mode from %s to %s\n",
clock_event_mode_label[clockevent_mode], clock_event_mode_label[mode]);
#endif /*DEBUG*/
/* Remember timer mode */
clockevent_mode = mode;
local_irq_restore(flags);
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
printk(KERN_ERR "imx_set_mode: Periodic mode is not supported for i.MX\n");
break;
case CLOCK_EVT_MODE_ONESHOT:
/*
* Do not put overhead of interrupt enable/disable into
* imx_set_next_event(), the core has about 4 minutes
* to call imx_set_next_event() or shutdown clock after
* mode switching
*/
local_irq_save(flags);
IMX_TCTL(TIMER_BASE) |= TCTL_IRQEN;
local_irq_restore(flags);
break;
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_RESUME:
/* Left event sources disabled, no more interrupts appears */
break;
}
}
static struct clock_event_device clockevent_imx = {
.name = "imx_timer1",
.features = CLOCK_EVT_FEAT_ONESHOT,
.shift = 32,
.set_mode = imx_set_mode,
.set_next_event = imx_set_next_event,
.rating = 200,
};
static int __init imx_clockevent_init(unsigned long rate)
{
clockevent_imx.mult = div_sc(rate, NSEC_PER_SEC,
clockevent_imx.shift);
clockevent_imx.max_delta_ns =
clockevent_delta2ns(0xfffffffe, &clockevent_imx);
clockevent_imx.min_delta_ns =
clockevent_delta2ns(0xf, &clockevent_imx);
clockevent_imx.cpumask = cpumask_of(0);
clockevents_register_device(&clockevent_imx);
return 0;
}
extern int imx_clocks_init(void);
static void __init imx_timer_init(void)
{
struct clk *clk;
unsigned long rate;
imx_clocks_init();
clk = clk_get(NULL, "perclk1");
clk_enable(clk);
rate = clk_get_rate(clk);
imx_timer_hardware_init();
imx_clocksource_init(rate);
imx_clockevent_init(rate);
/*
* Make irqs happen for the system timer
*/
setup_irq(TIM1_INT, &imx_timer_irq);
}
struct sys_timer imx_timer = {
.init = imx_timer_init,
};