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Commit 48021bd9 authored by Kristoffer Nyborg Gregertsen's avatar Kristoffer Nyborg Gregertsen Committed by Haavard Skinnemoen
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[AVR32] Platform code for pata_at32 



This patch adds platform code for PATA devices on the AP7000.

[hskinnemoen@atmel.com: board code left out for now since stk1000
	doesn't support IDE out of the box]
Signed-off-by: default avatarKristoffer Nyborg Gregertsen <kngregertsen@norway.atmel.com>
Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
parent 55b70a03

arch/avr32/mach-at32ap/at32ap7000.c

+65 −0
Original line number Diff line number Diff line
@@ -1227,6 +1227,71 @@ at32_add_device_usba(unsigned int id, struct usba_platform_data *data) 
	return NULL;

}



/* --------------------------------------------------------------------

 * IDE

 * -------------------------------------------------------------------- */

static struct ide_platform_data at32_ide0_data;

static struct resource at32_ide0_resource[] = {

	{

		.start	= 0x04000000,

		.end	= 0x07ffffff,

		.flags	= IORESOURCE_MEM,

	},

	IRQ(~0UL), /* Magic IRQ will be overridden */

};

DEFINE_DEV_DATA(at32_ide, 0);



struct platform_device *__init

at32_add_device_ide(unsigned int id, unsigned int extint,

		    struct ide_platform_data *data)

{

	struct platform_device *pdev;

	unsigned int extint_pin;



	switch (extint) {

	case 0:

		extint_pin = GPIO_PIN_PB(25);

		break;

	case 1:

		extint_pin = GPIO_PIN_PB(26);

		break;

	case 2:

		extint_pin = GPIO_PIN_PB(27);

		break;

	case 3:

		extint_pin = GPIO_PIN_PB(28);

		break;

	default:

		return NULL;

	}



	switch (id) {

	case 0:

		pdev = &at32_ide0_device;

		select_peripheral(PE(19), PERIPH_A, 0);	/* CFCE1  -> CS0_N */

		select_peripheral(PE(20), PERIPH_A, 0);	/* CFCE2  -> CS1_N */

		select_peripheral(PE(21), PERIPH_A, 0); /* NCS4   -> OE_N  */

		select_peripheral(PE(23), PERIPH_A, 0); /* CFRNW  -> DIR   */

		select_peripheral(PE(24), PERIPH_A, 0); /* NWAIT  <- IORDY */

		set_ebi_sfr_bits(HMATRIX_BIT(CS4A));

		data->cs = 4;

		break;

	default:

		return NULL;

	}



	at32_select_periph(extint_pin, GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);



	pdev->resource[1].start = EIM_IRQ_BASE + extint;

	pdev->resource[1].end = pdev->resource[1].start;



	memcpy(pdev->dev.platform_data, data, sizeof(struct ide_platform_data));



	platform_device_register(pdev);



	return pdev;

}



/* --------------------------------------------------------------------

 *  GCLK

 * -------------------------------------------------------------------- */

include/asm-avr32/arch-at32ap/board.h

+7 −0
Original line number Diff line number Diff line
@@ -44,6 +44,13 @@ struct usba_platform_data { 
struct platform_device *

at32_add_device_usba(unsigned int id, struct usba_platform_data *data);



struct ide_platform_data {

	u8      cs;

};

struct platform_device *

at32_add_device_ide(unsigned int id, unsigned int extint,

		    struct ide_platform_data *data);



/* depending on what's hooked up, not all SSC pins will be used */

#define	ATMEL_SSC_TK		0x01

#define	ATMEL_SSC_TF		0x02