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From 2297a86fcf8d9e2ecceee3d0905a8f054d91e9a5 Mon Sep 17 00:00:00 2001
From: Asen Dimov <dimov@ronetix.at>
Date: Tue, 2 Mar 2010 01:51:37 +0200
Subject: [PATCH] Add CompactFlash to at91sam9g45 architecture
---
arch/arm/mach-at91/at91sam9g45_devices.c | 106 ++++++++++++++++++++++++++++++
drivers/pcmcia/Kconfig | 2 +-
2 files changed, 107 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 3d9c66e..26d2b72 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -507,6 +507,112 @@ void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
void __init at91_add_device_mci(short mmc_id, struct mci_platform_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 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
+ */
+ csa = at91_sys_read(AT91_MATRIX_EBICSA);
+ switch (data->chipselect) {
+ case 4:
+ at91_set_A_periph(AT91_PIN_PC10, 0); /* EBI0_NCS4/CFCS0 */
+ csa |= AT91_MATRIX_EBI_CS4A_SMC_CF0;
+ cf0_data = *data;
+ pdev = &cf0_device;
+ break;
+ case 5:
+ at91_set_A_periph(AT91_PIN_PC11, 0); /* EBI0_NCS5/CFCS1 */
+ csa |= AT91_MATRIX_EBI_CS5A_SMC_CF1;
+ 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_EBICSA, 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_PC15, 0); /* NWAIT */
+ at91_set_A_periph(AT91_PIN_PC8, 0); /* CFCE1 */
+ at91_set_A_periph(AT91_PIN_PC9, 0); /* CFCE2 */
+ at91_set_A_periph(AT91_PIN_PC12, 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
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index e42d141..5790c67 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -270,7 +270,7 @@ config BFIN_CFPCMCIA
config AT91_CF
tristate "AT91 CompactFlash Controller"
- depends on PCMCIA && (ARCH_AT91RM9200 || ARCH_AT91SAM9260 || ARCH_AT91SAM9G20)
+ depends on PCMCIA && (ARCH_AT91RM9200 || ARCH_AT91SAM9260 || ARCH_AT91SAM9G20 || ARCH_AT91SAM9G45)
help
Say Y here to support the CompactFlash controller on AT91 chips.
Or choose M to compile the driver as a module named "at91_cf".
--
1.5.5.6
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