mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-27 11:19:37 +00:00
Code Issues Releases Wiki Activity

AT91: initialize Compact Flash on AT91SAM9263 cpu

Browse source 
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Andrew Victor <avictor.za@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Stanislaw Gruszka 2009-03-05 16:10:58 +01:00 committed by Bartlomiej Zolnierkiewicz
parent 6e5f1e1115
commit e565f20608
1 changed files with 105 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

105
arch/arm/mach-at91/at91sam9263_devices.c
View file

@ -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