ARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board
This patch adds:
- ov2640 sensor in at91sam9m10g45ek board
- support to use PCK as ISI_MCK. PCK's parent is managed at
SoC level, e.g. at91sam9g45_devices.c
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 96e2adc..bd4e68c 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -14,6 +14,7 @@
#include <linux/dma-mapping.h>
#include <linux/gpio.h>
+#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#include <linux/atmel-mci.h>
@@ -28,7 +29,10 @@
#include <mach/at_hdmac.h>
#include <mach/atmel-mci.h>
+#include <media/atmel-isi.h>
+
#include "generic.h"
+#include "clock.h"
/* --------------------------------------------------------------------
@@ -870,6 +874,96 @@
void __init at91_add_device_ac97(struct ac97c_platform_data *data) {}
#endif
+/* --------------------------------------------------------------------
+ * Image Sensor Interface
+ * -------------------------------------------------------------------- */
+#if defined(CONFIG_VIDEO_ATMEL_ISI) || defined(CONFIG_VIDEO_ATMEL_ISI_MODULE)
+static u64 isi_dmamask = DMA_BIT_MASK(32);
+static struct isi_platform_data isi_data;
+
+struct resource isi_resources[] = {
+ [0] = {
+ .start = AT91SAM9G45_BASE_ISI,
+ .end = AT91SAM9G45_BASE_ISI + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91SAM9G45_ID_ISI,
+ .end = AT91SAM9G45_ID_ISI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91sam9g45_isi_device = {
+ .name = "atmel_isi",
+ .id = 0,
+ .dev = {
+ .dma_mask = &isi_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &isi_data,
+ },
+ .resource = isi_resources,
+ .num_resources = ARRAY_SIZE(isi_resources),
+};
+
+static struct clk_lookup isi_mck_lookups[] = {
+ CLKDEV_CON_DEV_ID("isi_mck", "atmel_isi.0", NULL),
+};
+
+void __init at91_add_device_isi(struct isi_platform_data *data,
+ bool use_pck_as_mck)
+{
+ struct clk *pck;
+ struct clk *parent;
+
+ if (!data)
+ return;
+ isi_data = *data;
+
+ at91_set_A_periph(AT91_PIN_PB20, 0); /* ISI_D0 */
+ at91_set_A_periph(AT91_PIN_PB21, 0); /* ISI_D1 */
+ at91_set_A_periph(AT91_PIN_PB22, 0); /* ISI_D2 */
+ at91_set_A_periph(AT91_PIN_PB23, 0); /* ISI_D3 */
+ at91_set_A_periph(AT91_PIN_PB24, 0); /* ISI_D4 */
+ at91_set_A_periph(AT91_PIN_PB25, 0); /* ISI_D5 */
+ at91_set_A_periph(AT91_PIN_PB26, 0); /* ISI_D6 */
+ at91_set_A_periph(AT91_PIN_PB27, 0); /* ISI_D7 */
+ at91_set_A_periph(AT91_PIN_PB28, 0); /* ISI_PCK */
+ at91_set_A_periph(AT91_PIN_PB30, 0); /* ISI_HSYNC */
+ at91_set_A_periph(AT91_PIN_PB29, 0); /* ISI_VSYNC */
+ at91_set_B_periph(AT91_PIN_PB8, 0); /* ISI_PD8 */
+ at91_set_B_periph(AT91_PIN_PB9, 0); /* ISI_PD9 */
+ at91_set_B_periph(AT91_PIN_PB10, 0); /* ISI_PD10 */
+ at91_set_B_periph(AT91_PIN_PB11, 0); /* ISI_PD11 */
+
+ platform_device_register(&at91sam9g45_isi_device);
+
+ if (use_pck_as_mck) {
+ at91_set_B_periph(AT91_PIN_PB31, 0); /* ISI_MCK (PCK1) */
+
+ pck = clk_get(NULL, "pck1");
+ parent = clk_get(NULL, "plla");
+
+ BUG_ON(IS_ERR(pck) || IS_ERR(parent));
+
+ if (clk_set_parent(pck, parent)) {
+ pr_err("Failed to set PCK's parent\n");
+ } else {
+ /* Register PCK as ISI_MCK */
+ isi_mck_lookups[0].clk = pck;
+ clkdev_add_table(isi_mck_lookups,
+ ARRAY_SIZE(isi_mck_lookups));
+ }
+
+ clk_put(pck);
+ clk_put(parent);
+ }
+}
+#else
+void __init at91_add_device_isi(struct isi_platform_data *data,
+ bool use_pck_as_mck) {}
+#endif
+
/* --------------------------------------------------------------------
* LCD Controller