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ep93xx: IDE driver platform support code

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Add IDE driver platform support code for ep93xx.

Signed-off-by: Rafal Prylowski <prylowski@metasoft.pl>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ryan Mallon <rmallon@gmail.com>
This commit is contained in:
Rafal Prylowski 2012-04-12 14:14:12 +02:00 committed by Ryan Mallon
parent f8f5701bda
commit eb774a0901
3 changed files with 100 additions and 0 deletions
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96
arch/arm/mach-ep93xx/core.c
View File

@ -797,6 +797,102 @@ static struct platform_device ep93xx_wdt_device = {
.resource = ep93xx_wdt_resources,
};
/*************************************************************************
* EP93xx IDE
*************************************************************************/
static struct resource ep93xx_ide_resources[] = {
DEFINE_RES_MEM(EP93XX_IDE_PHYS_BASE, 0x38),
DEFINE_RES_IRQ(IRQ_EP93XX_EXT3),
};
static struct platform_device ep93xx_ide_device = {
.name = "ep93xx-ide",
.id = -1,
.dev = {
.dma_mask = &ep93xx_ide_device.dev.coherent_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(ep93xx_ide_resources),
.resource = ep93xx_ide_resources,
};
void __init ep93xx_register_ide(void)
{
platform_device_register(&ep93xx_ide_device);
}
int ep93xx_ide_acquire_gpio(struct platform_device *pdev)
{
int err;
int i;
err = gpio_request(EP93XX_GPIO_LINE_EGPIO2, dev_name(&pdev->dev));
if (err)
return err;
err = gpio_request(EP93XX_GPIO_LINE_EGPIO15, dev_name(&pdev->dev));
if (err)
goto fail_egpio15;
for (i = 2; i < 8; i++) {
err = gpio_request(EP93XX_GPIO_LINE_E(i), dev_name(&pdev->dev));
if (err)
goto fail_gpio_e;
}
for (i = 4; i < 8; i++) {
err = gpio_request(EP93XX_GPIO_LINE_G(i), dev_name(&pdev->dev));
if (err)
goto fail_gpio_g;
}
for (i = 0; i < 8; i++) {
err = gpio_request(EP93XX_GPIO_LINE_H(i), dev_name(&pdev->dev));
if (err)
goto fail_gpio_h;
}
/* GPIO ports E[7:2], G[7:4] and H used by IDE */
ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_EONIDE |
EP93XX_SYSCON_DEVCFG_GONIDE |
EP93XX_SYSCON_DEVCFG_HONIDE);
return 0;
fail_gpio_h:
for (--i; i >= 0; --i)
gpio_free(EP93XX_GPIO_LINE_H(i));
i = 8;
fail_gpio_g:
for (--i; i >= 4; --i)
gpio_free(EP93XX_GPIO_LINE_G(i));
i = 8;
fail_gpio_e:
for (--i; i >= 2; --i)
gpio_free(EP93XX_GPIO_LINE_E(i));
gpio_free(EP93XX_GPIO_LINE_EGPIO15);
fail_egpio15:
gpio_free(EP93XX_GPIO_LINE_EGPIO2);
return err;
}
EXPORT_SYMBOL(ep93xx_ide_acquire_gpio);
void ep93xx_ide_release_gpio(struct platform_device *pdev)
{
int i;
for (i = 2; i < 8; i++)
gpio_free(EP93XX_GPIO_LINE_E(i));
for (i = 4; i < 8; i++)
gpio_free(EP93XX_GPIO_LINE_G(i));
for (i = 0; i < 8; i++)
gpio_free(EP93XX_GPIO_LINE_H(i));
gpio_free(EP93XX_GPIO_LINE_EGPIO15);
gpio_free(EP93XX_GPIO_LINE_EGPIO2);
/* GPIO ports E[7:2], G[7:4] and H used by GPIO */
ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_EONIDE |
EP93XX_SYSCON_DEVCFG_GONIDE |
EP93XX_SYSCON_DEVCFG_HONIDE);
}
EXPORT_SYMBOL(ep93xx_ide_release_gpio);
void __init ep93xx_init_devices(void)
{
/* Disallow access to MaverickCrunch initially */

3
arch/arm/mach-ep93xx/include/mach/platform.h
View File

@ -48,6 +48,9 @@ void ep93xx_register_i2s(void);
int ep93xx_i2s_acquire(void);
void ep93xx_i2s_release(void);
void ep93xx_register_ac97(void);
void ep93xx_register_ide(void);
int ep93xx_ide_acquire_gpio(struct platform_device *pdev);
void ep93xx_ide_release_gpio(struct platform_device *pdev);
void ep93xx_init_devices(void);
extern struct sys_timer ep93xx_timer;

1
arch/arm/mach-ep93xx/soc.h
View File

@ -69,6 +69,7 @@
#define EP93XX_BOOT_ROM_BASE EP93XX_AHB_IOMEM(0x00090000)
#define EP93XX_IDE_PHYS_BASE EP93XX_AHB_PHYS(0x000a0000)
#define EP93XX_IDE_BASE EP93XX_AHB_IOMEM(0x000a0000)
#define EP93XX_VIC1_BASE EP93XX_AHB_IOMEM(0x000b0000)