Commit eb774a09 authored by Rafal Prylowski's avatar Rafal Prylowski Committed by Ryan Mallon
Browse files

ep93xx: IDE driver platform support code 



Add IDE driver platform support code for ep93xx.

Signed-off-by: default avatarRafal Prylowski <prylowski@metasoft.pl>
Acked-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: default avatarRyan Mallon <rmallon@gmail.com>
parent f8f5701b

arch/arm/mach-ep93xx/core.c

+96 −0
Original line number Diff line number Diff line
@@ -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 */

arch/arm/mach-ep93xx/include/mach/platform.h

+3 −0
Original line number Diff line number Diff line
@@ -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;

arch/arm/mach-ep93xx/soc.h

+1 −0
Original line number Diff line number Diff line
@@ -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)