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This pushes the platform data for the U300 COH901318

Browse Source 
DMA controller down into the driver and cleans up in
 the <mach/*> namespace for the U300 platform.
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Merge tag 'coh901318-for-arm-soc' of http://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers

This pushes the platform data for the U300 COH901318
DMA controller down into the driver and cleans up in
the <mach/*> namespace for the U300 platform.

* tag 'coh901318-for-arm-soc' of http://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  dma: coh901318: cut down on platform data abstraction
  dma: coh901318: merge header files
  dma: coh901318: push definitions into driver
  dma: coh901318: push header down into the DMA subsystem
  dma: coh901318: skip hard-coded addresses
  dma: coh901318: remove hardcoded target addresses
  dma: coh901318: push platform data into driver
  dma: coh901318: create a proper platform data file

Signed-off-by: Olof Johansson <olof@lixom.net>

Conflicts:
	arch/arm/mach-u300/core.c
This commit is contained in:
Olof Johansson 2013-01-28 13:37:09 -08:00
commit 4324332213
8 changed files with 1354 additions and 1476 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1087
arch/arm/mach-u300/core.c
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File diff suppressed because it is too large Load Diff

60
arch/arm/mach-u300/dma_channels.h
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@ -1,60 +0,0 @@
/*
*
* arch/arm/mach-u300/include/mach/dma_channels.h
*
*
* Copyright (C) 2007-2012 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Map file for the U300 dma driver.
* Author: Per Friden <per.friden@stericsson.com>
*/
#ifndef DMA_CHANNELS_H
#define DMA_CHANNELS_H
#define U300_DMA_MSL_TX_0 0
#define U300_DMA_MSL_TX_1 1
#define U300_DMA_MSL_TX_2 2
#define U300_DMA_MSL_TX_3 3
#define U300_DMA_MSL_TX_4 4
#define U300_DMA_MSL_TX_5 5
#define U300_DMA_MSL_TX_6 6
#define U300_DMA_MSL_RX_0 7
#define U300_DMA_MSL_RX_1 8
#define U300_DMA_MSL_RX_2 9
#define U300_DMA_MSL_RX_3 10
#define U300_DMA_MSL_RX_4 11
#define U300_DMA_MSL_RX_5 12
#define U300_DMA_MSL_RX_6 13
#define U300_DMA_MMCSD_RX_TX 14
#define U300_DMA_MSPRO_TX 15
#define U300_DMA_MSPRO_RX 16
#define U300_DMA_UART0_TX 17
#define U300_DMA_UART0_RX 18
#define U300_DMA_APEX_TX 19
#define U300_DMA_APEX_RX 20
#define U300_DMA_PCM_I2S0_TX 21
#define U300_DMA_PCM_I2S0_RX 22
#define U300_DMA_PCM_I2S1_TX 23
#define U300_DMA_PCM_I2S1_RX 24
#define U300_DMA_XGAM_CDI 25
#define U300_DMA_XGAM_PDI 26
#define U300_DMA_SPI_TX 27
#define U300_DMA_SPI_RX 28
#define U300_DMA_GENERAL_PURPOSE_0 29
#define U300_DMA_GENERAL_PURPOSE_1 30
#define U300_DMA_GENERAL_PURPOSE_2 31
#define U300_DMA_GENERAL_PURPOSE_3 32
#define U300_DMA_GENERAL_PURPOSE_4 33
#define U300_DMA_GENERAL_PURPOSE_5 34
#define U300_DMA_GENERAL_PURPOSE_6 35
#define U300_DMA_GENERAL_PURPOSE_7 36
#define U300_DMA_GENERAL_PURPOSE_8 37
#define U300_DMA_UART1_TX 38
#define U300_DMA_UART1_RX 39
#define U300_DMA_DEVICE_CHANNELS 32
#define U300_DMA_CHANNELS 40
#endif /* DMA_CHANNELS_H */

267
arch/arm/mach-u300/include/mach/coh901318.h
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@ -1,267 +0,0 @@
/*
*
* include/linux/coh901318.h
*
*
* Copyright (C) 2007-2009 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* DMA driver for COH 901 318
* Author: Per Friden <per.friden@stericsson.com>
*/
#ifndef COH901318_H
#define COH901318_H
#include <linux/device.h>
#include <linux/dmaengine.h>
#define MAX_DMA_PACKET_SIZE_SHIFT 11
#define MAX_DMA_PACKET_SIZE (1 << MAX_DMA_PACKET_SIZE_SHIFT)
/**
* struct coh901318_lli - linked list item for DMAC
* @control: control settings for DMAC
* @src_addr: transfer source address
* @dst_addr: transfer destination address
* @link_addr: physical address to next lli
* @virt_link_addr: virtual address of next lli (only used by pool_free)
* @phy_this: physical address of current lli (only used by pool_free)
*/
struct coh901318_lli {
u32 control;
dma_addr_t src_addr;
dma_addr_t dst_addr;
dma_addr_t link_addr;
void *virt_link_addr;
dma_addr_t phy_this;
};
/**
* struct coh901318_params - parameters for DMAC configuration
* @config: DMA config register
* @ctrl_lli_last: DMA control register for the last lli in the list
* @ctrl_lli: DMA control register for an lli
* @ctrl_lli_chained: DMA control register for a chained lli
*/
struct coh901318_params {
u32 config;
u32 ctrl_lli_last;
u32 ctrl_lli;
u32 ctrl_lli_chained;
};
/**
* struct coh_dma_channel - dma channel base
* @name: ascii name of dma channel
* @number: channel id number
* @desc_nbr_max: number of preallocated descriptors
* @priority_high: prio of channel, 0 low otherwise high.
* @param: configuration parameters
* @dev_addr: physical address of periphal connected to channel
*/
struct coh_dma_channel {
const char name[32];
const int number;
const int desc_nbr_max;
const int priority_high;
const struct coh901318_params param;
const dma_addr_t dev_addr;
};
/**
* dma_access_memory_state_t - register dma for memory access
*
* @dev: The dma device
* @active: 1 means dma intends to access memory
* 0 means dma wont access memory
*/
typedef void (*dma_access_memory_state_t)(struct device *dev,
bool active);
/**
* struct powersave - DMA power save structure
* @lock: lock protecting data in this struct
* @started_channels: bit mask indicating active dma channels
*/
struct powersave {
spinlock_t lock;
u64 started_channels;
};
/**
* struct coh901318_platform - platform arch structure
* @chans_slave: specifying dma slave channels
* @chans_memcpy: specifying dma memcpy channels
* @access_memory_state: requesting DMA memory access (on / off)
* @chan_conf: dma channel configurations
* @max_channels: max number of dma chanenls
*/
struct coh901318_platform {
const int *chans_slave;
const int *chans_memcpy;
const dma_access_memory_state_t access_memory_state;
const struct coh_dma_channel *chan_conf;
const int max_channels;
};
#ifdef CONFIG_COH901318
/**
* coh901318_filter_id() - DMA channel filter function
* @chan: dma channel handle
* @chan_id: id of dma channel to be filter out
*
* In dma_request_channel() it specifies what channel id to be requested
*/
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id);
#else
static inline bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
{
return false;
}
#endif
/*
* DMA Controller - this access the static mappings of the coh901318 dma.
*
*/
#define COH901318_MOD32_MASK (0x1F)
#define COH901318_WORD_MASK (0xFFFFFFFF)
/* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
#define COH901318_INT_STATUS1 (0x0000)
#define COH901318_INT_STATUS2 (0x0004)
/* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_TC_INT_STATUS1 (0x0008)
#define COH901318_TC_INT_STATUS2 (0x000C)
/* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
#define COH901318_TC_INT_CLEAR1 (0x0010)
#define COH901318_TC_INT_CLEAR2 (0x0014)
/* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_RAW_TC_INT_STATUS1 (0x0018)
#define COH901318_RAW_TC_INT_STATUS2 (0x001C)
/* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
#define COH901318_BE_INT_STATUS1 (0x0020)
#define COH901318_BE_INT_STATUS2 (0x0024)
/* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
#define COH901318_BE_INT_CLEAR1 (0x0028)
#define COH901318_BE_INT_CLEAR2 (0x002C)
/* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
#define COH901318_RAW_BE_INT_STATUS1 (0x0030)
#define COH901318_RAW_BE_INT_STATUS2 (0x0034)
/*
* CX_CFG - Channel Configuration Registers 32bit (R/W)
*/
#define COH901318_CX_CFG (0x0100)
#define COH901318_CX_CFG_SPACING (0x04)
/* Channel enable activates tha dma job */
#define COH901318_CX_CFG_CH_ENABLE (0x00000001)
#define COH901318_CX_CFG_CH_DISABLE (0x00000000)
/* Request Mode */
#define COH901318_CX_CFG_RM_MASK (0x00000006)
#define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
#define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
#define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
#define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
#define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
/* Linked channel request field. RM must == 11 */
#define COH901318_CX_CFG_LCRF_SHIFT 3
#define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
#define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
/* Terminal Counter Interrupt Request Mask */
#define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
#define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
/* Bus Error interrupt Mask */
#define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
#define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
/*
* CX_STAT - Channel Status Registers 32bit (R/-)
*/
#define COH901318_CX_STAT (0x0200)
#define COH901318_CX_STAT_SPACING (0x04)
#define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
#define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
#define COH901318_CX_STAT_ACTIVE (0x00000002)
#define COH901318_CX_STAT_ENABLED (0x00000001)
/*
* CX_CTRL - Channel Control Registers 32bit (R/W)
*/
#define COH901318_CX_CTRL (0x0400)
#define COH901318_CX_CTRL_SPACING (0x10)
/* Transfer Count Enable */
#define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
#define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
/* Transfer Count Value 0 - 4095 */
#define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
/* Burst count */
#define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
#define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
#define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
/* Source bus size */
#define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
#define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
/* Source address increment */
#define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
#define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
/* Destination Bus Size */
#define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
#define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
#define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
#define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
/* Destination address increment */
#define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
#define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
/* Master Mode (Master2 is only connected to MSL) */
#define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
#define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
#define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
/* Terminal Count flag to PER enable */
#define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
#define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
/* Terminal Count flags to CPU enable */
#define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
#define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
/* Hand shake to peripheral */
#define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
#define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
#define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
#define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
/* DMA mode */
#define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
#define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
/* Primary Request Data Destination */
#define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
#define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
#define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
/*
* CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
*/
#define COH901318_CX_SRC_ADDR (0x0404)
#define COH901318_CX_SRC_ADDR_SPACING (0x10)
/*
* CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
*/
#define COH901318_CX_DST_ADDR (0x0408)
#define COH901318_CX_DST_ADDR_SPACING (0x10)
/*
* CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
*/
#define COH901318_CX_LNK_ADDR (0x040C)
#define COH901318_CX_LNK_ADDR_SPACING (0x10)
#define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
#endif /* COH901318_H */

3
arch/arm/mach-u300/spi.c
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@ -10,9 +10,8 @@
#include <linux/amba/bus.h>
#include <linux/spi/spi.h>
#include <linux/amba/pl022.h>
#include <linux/platform_data/dma-coh901318.h>
#include <linux/err.h>
#include <mach/coh901318.h>
#include "dma_channels.h"
/*
* The following is for the actual devices on the SSP/SPI bus

1302
drivers/dma/coh901318.c
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File diff suppressed because it is too large Load Diff

35
drivers/dma/coh901318_lli.h → drivers/dma/coh901318.h
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@ -1,16 +1,15 @@
/*
* driver/dma/coh901318_lli.h
*
* Copyright (C) 2007-2009 ST-Ericsson
* Copyright (C) 2007-2013 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Support functions for handling lli for coh901318
* DMA driver for COH 901 318
* Author: Per Friden <per.friden@stericsson.com>
*/
#ifndef COH901318_LLI_H
#define COH901318_LLI_H
#ifndef COH901318_H
#define COH901318_H
#include <mach/coh901318.h>
#define MAX_DMA_PACKET_SIZE_SHIFT 11
#define MAX_DMA_PACKET_SIZE (1 << MAX_DMA_PACKET_SIZE_SHIFT)
struct device;
@ -24,7 +23,25 @@ struct coh901318_pool {
#endif
};
struct device;
/**
* struct coh901318_lli - linked list item for DMAC
* @control: control settings for DMAC
* @src_addr: transfer source address
* @dst_addr: transfer destination address
* @link_addr: physical address to next lli
* @virt_link_addr: virtual address of next lli (only used by pool_free)
* @phy_this: physical address of current lli (only used by pool_free)
*/
struct coh901318_lli {
u32 control;
dma_addr_t src_addr;
dma_addr_t dst_addr;
dma_addr_t link_addr;
void *virt_link_addr;
dma_addr_t phy_this;
};
/**
* coh901318_pool_create() - Creates an dma pool for lli:s
* @pool: pool handle
@ -121,4 +138,4 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool,
u32 ctrl, u32 ctrl_last,
enum dma_transfer_direction dir, u32 ctrl_irq_mask);
#endif /* COH901318_LLI_H */
#endif /* COH901318_H */

4
drivers/dma/coh901318_lli.c
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@ -11,9 +11,9 @@
#include <linux/memory.h>
#include <linux/gfp.h>
#include <linux/dmapool.h>
#include <mach/coh901318.h>
#include <linux/dmaengine.h>
#include "coh901318_lli.h"
#include "coh901318.h"
#if (defined(CONFIG_DEBUG_FS) && defined(CONFIG_U300_DEBUG))
#define DEBUGFS_POOL_COUNTER_RESET(pool) (pool->debugfs_pool_counter = 0)

72
include/linux/platform_data/dma-coh901318.h Normal file
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@ -0,0 +1,72 @@
/*
* Platform data for the COH901318 DMA controller
* Copyright (C) 2007-2013 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef PLAT_COH901318_H
#define PLAT_COH901318_H
#ifdef CONFIG_COH901318
/* We only support the U300 DMA channels */
#define U300_DMA_MSL_TX_0 0
#define U300_DMA_MSL_TX_1 1
#define U300_DMA_MSL_TX_2 2
#define U300_DMA_MSL_TX_3 3
#define U300_DMA_MSL_TX_4 4
#define U300_DMA_MSL_TX_5 5
#define U300_DMA_MSL_TX_6 6
#define U300_DMA_MSL_RX_0 7
#define U300_DMA_MSL_RX_1 8
#define U300_DMA_MSL_RX_2 9
#define U300_DMA_MSL_RX_3 10
#define U300_DMA_MSL_RX_4 11
#define U300_DMA_MSL_RX_5 12
#define U300_DMA_MSL_RX_6 13
#define U300_DMA_MMCSD_RX_TX 14
#define U300_DMA_MSPRO_TX 15
#define U300_DMA_MSPRO_RX 16
#define U300_DMA_UART0_TX 17
#define U300_DMA_UART0_RX 18
#define U300_DMA_APEX_TX 19
#define U300_DMA_APEX_RX 20
#define U300_DMA_PCM_I2S0_TX 21
#define U300_DMA_PCM_I2S0_RX 22
#define U300_DMA_PCM_I2S1_TX 23
#define U300_DMA_PCM_I2S1_RX 24
#define U300_DMA_XGAM_CDI 25
#define U300_DMA_XGAM_PDI 26
#define U300_DMA_SPI_TX 27
#define U300_DMA_SPI_RX 28
#define U300_DMA_GENERAL_PURPOSE_0 29
#define U300_DMA_GENERAL_PURPOSE_1 30
#define U300_DMA_GENERAL_PURPOSE_2 31
#define U300_DMA_GENERAL_PURPOSE_3 32
#define U300_DMA_GENERAL_PURPOSE_4 33
#define U300_DMA_GENERAL_PURPOSE_5 34
#define U300_DMA_GENERAL_PURPOSE_6 35
#define U300_DMA_GENERAL_PURPOSE_7 36
#define U300_DMA_GENERAL_PURPOSE_8 37
#define U300_DMA_UART1_TX 38
#define U300_DMA_UART1_RX 39
#define U300_DMA_DEVICE_CHANNELS 32
#define U300_DMA_CHANNELS 40
/**
* coh901318_filter_id() - DMA channel filter function
* @chan: dma channel handle
* @chan_id: id of dma channel to be filter out
*
* In dma_request_channel() it specifies what channel id to be requested
*/
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id);
#else
static inline bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
{
return false;
}
#endif
#endif /* PLAT_COH901318_H */