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AT91: initialize Compact Flash on AT91SAM9263 cpu
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>
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1 changed files with 105 additions and 0 deletions
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@ -347,6 +347,111 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
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void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* Compact Flash (PCMCIA or IDE)
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE) || \
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defined(CONFIG_BLK_DEV_IDE_AT91) || defined(CONFIG_BLK_DEV_IDE_AT91_MODULE)
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static struct at91_cf_data cf0_data;
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static struct resource cf0_resources[] = {
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[0] = {
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.start = AT91_CHIPSELECT_4,
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.end = AT91_CHIPSELECT_4 + SZ_256M - 1,
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.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
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}
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};
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static struct platform_device cf0_device = {
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.id = 0,
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.dev = {
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.platform_data = &cf0_data,
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},
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.resource = cf0_resources,
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.num_resources = ARRAY_SIZE(cf0_resources),
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};
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static struct at91_cf_data cf1_data;
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static struct resource cf1_resources[] = {
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[0] = {
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.start = AT91_CHIPSELECT_5,
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.end = AT91_CHIPSELECT_5 + SZ_256M - 1,
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.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
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}
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};
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static struct platform_device cf1_device = {
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.id = 1,
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.dev = {
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.platform_data = &cf1_data,
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},
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.resource = cf1_resources,
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.num_resources = ARRAY_SIZE(cf1_resources),
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};
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void __init at91_add_device_cf(struct at91_cf_data *data)
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{
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unsigned long ebi0_csa;
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struct platform_device *pdev;
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if (!data)
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return;
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/*
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* assign CS4 or CS5 to SMC with Compact Flash logic support,
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* we assume SMC timings are configured by board code,
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* except True IDE where timings are controlled by driver
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*/
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ebi0_csa = at91_sys_read(AT91_MATRIX_EBI0CSA);
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switch (data->chipselect) {
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case 4:
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at91_set_A_periph(AT91_PIN_PD6, 0); /* EBI0_NCS4/CFCS0 */
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ebi0_csa |= AT91_MATRIX_EBI0_CS4A_SMC_CF1;
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cf0_data = *data;
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pdev = &cf0_device;
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break;
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case 5:
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at91_set_A_periph(AT91_PIN_PD7, 0); /* EBI0_NCS5/CFCS1 */
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ebi0_csa |= AT91_MATRIX_EBI0_CS5A_SMC_CF2;
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cf1_data = *data;
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pdev = &cf1_device;
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break;
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default:
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printk(KERN_ERR "AT91 CF: bad chip-select requested (%u)\n",
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data->chipselect);
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return;
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}
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at91_sys_write(AT91_MATRIX_EBI0CSA, ebi0_csa);
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if (data->det_pin) {
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_deglitch(data->det_pin, 1);
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}
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if (data->irq_pin) {
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at91_set_gpio_input(data->irq_pin, 1);
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at91_set_deglitch(data->irq_pin, 1);
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}
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if (data->vcc_pin)
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/* initially off */
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at91_set_gpio_output(data->vcc_pin, 0);
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/* enable EBI controlled pins */
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at91_set_A_periph(AT91_PIN_PD5, 1); /* NWAIT */
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at91_set_A_periph(AT91_PIN_PD8, 0); /* CFCE1 */
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at91_set_A_periph(AT91_PIN_PD9, 0); /* CFCE2 */
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at91_set_A_periph(AT91_PIN_PD14, 0); /* CFNRW */
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pdev->name = (data->flags & AT91_CF_TRUE_IDE) ? "at91_ide" : "at91_cf";
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platform_device_register(pdev);
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}
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#else
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void __init at91_add_device_cf(struct at91_cf_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* NAND / SmartMedia
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