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ARM: OMAP: abstract debug card setup (smc, leds)

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Additional cleanup for debug boards on H2/P2/H3/H4:  move the init
code that's not board-specific into a new file where it can be easily
shared between all the different boards (avoiding code duplication,
and making it easier to support more devices).  Make H4 use that.

This should be easy to drop in to the OMAP1 boards using these debug
cards; the only difference seems to be that the p2 does an extra reset
of the smc using the fpga (probably all boards could do that, if it's
necessary) and doesn't use the gpio mux or request APIs.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
David Brownell 2006-12-06 17:14:03 -08:00 committed by Tony Lindgren
parent 1c22cc1325
commit f604931238
6 changed files with 102 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-omap2/Kconfig
View File

@ -21,7 +21,7 @@ config MACH_OMAP_GENERIC
config MACH_OMAP_H4
bool "OMAP 2420 H4 board"
depends on ARCH_OMAP2 && ARCH_OMAP24XX
select OMAP_DEBUG_LEDS if LEDS || LEDS_OMAP_DEBUG
select OMAP_DEBUG_DEVICES
config MACH_OMAP_APOLLON
bool "OMAP 2420 Apollon board"

46
arch/arm/mach-omap2/board-h4.c
View File

@ -131,26 +131,6 @@ static struct platform_device h4_flash_device = {
.resource = &h4_flash_resource,
};
static struct resource h4_smc91x_resources[] = {
[0] = {
.start = OMAP24XX_ETHR_START, /* Physical */
.end = OMAP24XX_ETHR_START + 0xf,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
.end = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device h4_smc91x_device = {
.name = "smc91x",
.id = -1,
.num_resources = ARRAY_SIZE(h4_smc91x_resources),
.resource = h4_smc91x_resources,
};
/* Select between the IrDA and aGPS module
*/
static int h4_select_irda(struct device *dev, int state)
@ -266,29 +246,14 @@ static struct platform_device h4_lcd_device = {
.id = -1,
};
static struct resource h4_led_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
};
static struct platform_device h4_led_device = {
.name = "omap_dbg_led",
.id = -1,
.num_resources = ARRAY_SIZE(h4_led_resources),
.resource = h4_led_resources,
};
static struct platform_device *h4_devices[] __initdata = {
&h4_smc91x_device,
&h4_flash_device,
&h4_irda_device,
&h4_kp_device,
&h4_lcd_device,
&h4_led_device,
};
static inline void __init h4_init_smc91x(void)
static inline void __init h4_init_debug(void)
{
/* Make sure CS1 timings are correct */
GPMC_CONFIG1_1 = 0x00011200;
@ -301,12 +266,8 @@ static inline void __init h4_init_smc91x(void)
udelay(100);
omap_cfg_reg(M15_24XX_GPIO92);
if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
OMAP24XX_ETHR_GPIO_IRQ);
return;
}
omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
gpmc_cs_free(eth_cs);
}
static void __init omap_h4_init_irq(void)
@ -314,7 +275,6 @@ static void __init omap_h4_init_irq(void)
omap2_init_common_hw();
omap_init_irq();
omap_gpio_init();
h4_init_smc91x();
}
static struct omap_uart_config h4_uart_config __initdata = {

9
arch/arm/plat-omap/Kconfig
View File

@ -20,10 +20,15 @@ endchoice
comment "OMAP Feature Selections"
config OMAP_DEBUG_LEDS
config OMAP_DEBUG_DEVICES
bool
help
For debug card leds on TI reference boards.
For debug cards on TI reference boards.
config OMAP_DEBUG_LEDS
bool
depends on OMAP_DEBUG_DEVICES
default y if LEDS || LEDS_OMAP_DEBUG
config OMAP_RESET_CLOCKS
bool "Reset unused clocks during boot"

1
arch/arm/plat-omap/Makefile
View File

@ -17,4 +17,5 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
obj-$(CONFIG_CPU_FREQ) += cpu-omap.o
obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o
obj-$(CONFIG_OMAP_DEBUG_DEVICES) += debug-devices.o
obj-$(CONFIG_OMAP_DEBUG_LEDS) += debug-leds.o

86
arch/arm/plat-omap/debug-devices.c Normal file
View File

@ -0,0 +1,86 @@
/*
* linux/arch/arm/plat-omap/debug-devices.c
*
* Copyright (C) 2005 Nokia Corporation
* Modified from mach-omap2/board-h4.c
*
* 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/platform_device.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
/* Many OMAP development platforms reuse the same "debug board"; these
* platforms include H2, H3, H4, and Perseus2.
*/
static struct resource smc91x_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = -1,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
static struct resource led_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
};
static struct platform_device led_device = {
.name = "omap_dbg_led",
.id = -1,
.num_resources = ARRAY_SIZE(led_resources),
.resource = led_resources,
};
static struct platform_device *debug_devices[] __initdata = {
&smc91x_device,
&led_device,
/* ps2 kbd + mouse ports */
/* 4 extra uarts */
/* 6 input dip switches */
/* 8 output pins */
};
int __init debug_card_init(u32 addr, unsigned gpio)
{
int status;
smc91x_resources[0].start = addr + 0x300;
smc91x_resources[0].end = addr + 0x30f;
smc91x_resources[1].start = OMAP_GPIO_IRQ(gpio);
smc91x_resources[1].end = OMAP_GPIO_IRQ(gpio);
status = omap_request_gpio(gpio);
if (status < 0) {
printk(KERN_ERR "GPIO%d unavailable for smc91x IRQ\n", gpio);
return status;
}
omap_set_gpio_direction(gpio, 1);
led_resources[0].start = addr;
led_resources[0].end = addr + SZ_4K - 1;
return platform_add_devices(debug_devices, ARRAY_SIZE(debug_devices));
}

4
include/asm-arm/arch-omap/board.h
View File

@ -179,4 +179,8 @@ extern const void *omap_get_var_config(u16 tag, size_t *len);
extern struct omap_board_config_kernel *omap_board_config;
extern int omap_board_config_size;
/* for TI reference platforms sharing the same debug card */
extern int debug_card_init(u32 addr, unsigned gpio);
#endif