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Commit e565f206 authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by Bartlomiej Zolnierkiewicz
Browse files

AT91: initialize Compact Flash on AT91SAM9263 cpu 



Signed-off-by: default avatarStanislaw Gruszka <stf_xl@wp.pl>
Cc: Andrew Victor <avictor.za@gmail.com>
Acked-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: default avatarAndrew Victor <linux@maxim.org.za>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 6e5f1e11

arch/arm/mach-at91/at91sam9263_devices.c

+105 −0
Original line number Diff line number Diff line
@@ -347,6 +347,111 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) 
void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}

#endif



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

 *  Compact Flash (PCMCIA or IDE)

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



#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE) || \

    defined(CONFIG_BLK_DEV_IDE_AT91) || defined(CONFIG_BLK_DEV_IDE_AT91_MODULE)



static struct at91_cf_data cf0_data;



static struct resource cf0_resources[] = {

	[0] = {

		.start	= AT91_CHIPSELECT_4,

		.end	= AT91_CHIPSELECT_4 + SZ_256M - 1,

		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,

	}

};



static struct platform_device cf0_device = {

	.id		= 0,

	.dev		= {

				.platform_data	= &cf0_data,

	},

	.resource	= cf0_resources,

	.num_resources	= ARRAY_SIZE(cf0_resources),

};



static struct at91_cf_data cf1_data;



static struct resource cf1_resources[] = {

	[0] = {

		.start	= AT91_CHIPSELECT_5,

		.end	= AT91_CHIPSELECT_5 + SZ_256M - 1,

		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,

	}

};



static struct platform_device cf1_device = {

	.id		= 1,

	.dev		= {

				.platform_data	= &cf1_data,

	},

	.resource	= cf1_resources,

	.num_resources	= ARRAY_SIZE(cf1_resources),

};



void __init at91_add_device_cf(struct at91_cf_data *data)

{

	unsigned long ebi0_csa;

	struct platform_device *pdev;



	if (!data)

		return;



	/*

	 * assign CS4 or CS5 to SMC with Compact Flash logic support,

	 * we assume SMC timings are configured by board code,

	 * except True IDE where timings are controlled by driver

	 */

	ebi0_csa = at91_sys_read(AT91_MATRIX_EBI0CSA);

	switch (data->chipselect) {

	case 4:

		at91_set_A_periph(AT91_PIN_PD6, 0);  /* EBI0_NCS4/CFCS0 */

		ebi0_csa |= AT91_MATRIX_EBI0_CS4A_SMC_CF1;

		cf0_data = *data;

		pdev = &cf0_device;

		break;

	case 5:

		at91_set_A_periph(AT91_PIN_PD7, 0);  /* EBI0_NCS5/CFCS1 */

		ebi0_csa |= AT91_MATRIX_EBI0_CS5A_SMC_CF2;

		cf1_data = *data;

		pdev = &cf1_device;

		break;

	default:

		printk(KERN_ERR "AT91 CF: bad chip-select requested (%u)\n",

		       data->chipselect);

		return;

	}

	at91_sys_write(AT91_MATRIX_EBI0CSA, ebi0_csa);



	if (data->det_pin) {

		at91_set_gpio_input(data->det_pin, 1);

		at91_set_deglitch(data->det_pin, 1);

	}



	if (data->irq_pin) {

		at91_set_gpio_input(data->irq_pin, 1);

		at91_set_deglitch(data->irq_pin, 1);

	}



	if (data->vcc_pin)

		/* initially off */

		at91_set_gpio_output(data->vcc_pin, 0);



	/* enable EBI controlled pins */

	at91_set_A_periph(AT91_PIN_PD5, 1);  /* NWAIT */

	at91_set_A_periph(AT91_PIN_PD8, 0);  /* CFCE1 */

	at91_set_A_periph(AT91_PIN_PD9, 0);  /* CFCE2 */

	at91_set_A_periph(AT91_PIN_PD14, 0); /* CFNRW */



	pdev->name = (data->flags & AT91_CF_TRUE_IDE) ? "at91_ide" : "at91_cf";

	platform_device_register(pdev);

}

#else

void __init at91_add_device_cf(struct at91_cf_data *data) {}

#endif



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

 *  NAND / SmartMedia