ARM: 5631/1: Platform data for CF/IDE support in AT91SAM9260

This patch adds platform data for CF/IDE support
and SMC init code for AT91SAM9260 SoC.

Tested-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 116 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index d74c9ac007e7..ee4ea0e720cf 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -1113,6 +1113,122 @@ void __init at91_set_serial_console(unsigned portnr) {}
 void __init at91_add_device_serial(void) {}
 #endif
 
+/* --------------------------------------------------------------------
+ *  CF/IDE
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_BLK_DEV_IDE_AT91) || defined(CONFIG_BLK_DEV_IDE_AT91_MODULE) || \
+        defined(CONFIG_PATA_AT91) || defined(CONFIG_PATA_AT91_MODULE) || \
+        defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_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,
+        }
+};
+
+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,
+        }
+};
+
+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)
+{
+        struct platform_device *pdev;
+        unsigned long csa;
+
+        if (!data)
+                return;
+
+        csa = at91_sys_read(AT91_MATRIX_EBICSA);
+
+        switch (data->chipselect) {
+        case 4:
+                at91_set_multi_drive(AT91_PIN_PC8, 0);
+                at91_set_A_periph(AT91_PIN_PC8, 0);
+                csa |= AT91_MATRIX_CS4A_SMC_CF1;
+                cf0_data = *data;
+                pdev = &cf0_device;
+                break;
+        case 5:
+                at91_set_multi_drive(AT91_PIN_PC9, 0);
+                at91_set_A_periph(AT91_PIN_PC9, 0);
+                csa |= AT91_MATRIX_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_EBICSA, csa);
+
+        if (data->rst_pin) {
+                at91_set_multi_drive(data->rst_pin, 0);
+                at91_set_gpio_output(data->rst_pin, 1);
+        }
+
+        if (data->irq_pin) {
+                at91_set_gpio_input(data->irq_pin, 0);
+                at91_set_deglitch(data->irq_pin, 1);
+        }
+
+        if (data->det_pin) {
+                at91_set_gpio_input(data->det_pin, 0);
+                at91_set_deglitch(data->det_pin, 1);
+        }
+
+        at91_set_B_periph(AT91_PIN_PC6, 0);     /* CFCE1 */
+        at91_set_B_periph(AT91_PIN_PC7, 0);     /* CFCE2 */
+        at91_set_A_periph(AT91_PIN_PC10, 0);    /* CFRNW */
+        at91_set_A_periph(AT91_PIN_PC15, 1);    /* NWAIT */
+
+        if (data->flags & AT91_CF_TRUE_IDE)
+#if defined(CONFIG_PATA_AT91) || defined(CONFIG_PATA_AT91_MODULE)
+                pdev->name = "pata_at91";
+#elif defined(CONFIG_BLK_DEV_IDE_AT91) || defined(CONFIG_BLK_DEV_IDE_AT91_MODULE)
+                pdev->name = "at91_ide";
+#else
+#warning "board requires AT91_CF_TRUE_IDE: enable either at91_ide or pata_at91"
+#endif
+        else
+                pdev->name = "at91_cf";
+
+        platform_device_register(pdev);
+}
+
+#else
+void __init at91_add_device_cf(struct at91_cf_data * data) {}
+#endif
 
 /* -------------------------------------------------------------------- */
 /*