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Commit 62090a08 authored by Håvard Skinnemoen's avatar Håvard Skinnemoen Committed by David Woodhouse
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[MTD] [NAND] avr32: atmel_nand platform code for AT32AP700x 



This function initializes and adds a platform_device for a NAND flash
interface on SMC chip select 3.

Signed-off-by: default avatarHåvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent e1677ce4

arch/avr32/mach-at32ap/at32ap700x.c

+52 −0
Original line number Diff line number Diff line
@@ -1729,6 +1729,58 @@ fail: 
}

#endif



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

 * NAND Flash / SmartMedia

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

static struct resource smc_cs3_resource[] __initdata = {

	{

		.start	= 0x0c000000,

		.end	= 0x0fffffff,

		.flags	= IORESOURCE_MEM,

	}, {

		.start	= 0xfff03c00,

		.end	= 0xfff03fff,

		.flags	= IORESOURCE_MEM,

	},

};



struct platform_device *__init

at32_add_device_nand(unsigned int id, struct atmel_nand_data *data)

{

	struct platform_device *pdev;



	if (id != 0 || !data)

		return NULL;



	pdev = platform_device_alloc("atmel_nand", id);

	if (!pdev)

		goto fail;



	if (platform_device_add_resources(pdev, smc_cs3_resource,

				ARRAY_SIZE(smc_cs3_resource)))

		goto fail;



	if (platform_device_add_data(pdev, data,

				sizeof(struct atmel_nand_data)))

		goto fail;



	set_ebi_sfr_bits(HMATRIX_BIT(CS3A));

	if (data->enable_pin)

		at32_select_gpio(data->enable_pin,

				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);

	if (data->rdy_pin)

		at32_select_gpio(data->rdy_pin, 0);

	if (data->det_pin)

		at32_select_gpio(data->det_pin, 0);



	platform_device_add(pdev);

	return pdev;



fail:

	platform_device_put(pdev);

	return NULL;

}



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

 * AC97C

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

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

+13 −0
Original line number Diff line number Diff line
@@ -85,4 +85,17 @@ struct platform_device * 
at32_add_device_cf(unsigned int id, unsigned int extint,

		struct cf_platform_data *data);



/* NAND / SmartMedia */

struct atmel_nand_data {

	int	enable_pin;	/* chip enable */

	int	det_pin;	/* card detect */

	int	rdy_pin;	/* ready/busy */

	u8	ale;		/* address line number connected to ALE */

	u8	cle;		/* address line number connected to CLE */

	u8	bus_width_16;	/* buswidth is 16 bit */

	struct mtd_partition *(*partition_info)(int size, int *num_partitions);

};

struct platform_device *

at32_add_device_nand(unsigned int id, struct atmel_nand_data *data);



#endif /* __ASM_ARCH_BOARD_H */