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Subject[PATCH v4 3/3] at91: add Atmel ISI and ov2640 support on sam9m10/sam9g45 board
Date
This patch add:
- ov2640 sensor in sam9m10/sam9g45 board.
- support to use PCK as ISI_MCK. PCK's parent is managed in SoC level, e.g. at91sam9g45_devices.c

Signed-off-by: Josh Wu <josh.wu@atmel.com>
---
arch/arm/mach-at91/at91sam9g45_devices.c | 98 +++++++++++++++++++++++++++++-
arch/arm/mach-at91/board-sam9m10g45ek.c | 85 +++++++++++++++++++++++++-
2 files changed, 180 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 600bffb..00e6a7f 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -16,7 +16,7 @@
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#include <linux/atmel-mci.h>
-
+#include <linux/clk.h>
#include <linux/fb.h>
#include <video/atmel_lcdc.h>

@@ -28,7 +28,10 @@
#include <mach/at_hdmac.h>
#include <mach/atmel-mci.h>

+#include <media/atmel-isi.h>
+
#include "generic.h"
+#include "clock.h"


/* --------------------------------------------------------------------
@@ -863,6 +866,99 @@ void __init at91_add_device_ac97(struct ac97c_platform_data *data)
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");
+
+ if (IS_ERR(pck) || IS_ERR(parent))
+ BUG();
+
+ if (clk_set_parent(pck, parent))
+ printk(KERN_ERR "Failed to set PCK's parent\n");
+ else {
+ /* Register PCK as ISI_MCK */
+ isi_mck_lookups->clk = pck;
+ clkdev_add_table(isi_mck_lookups,
+ ARRAY_SIZE(isi_mck_lookups));
+ }
+
+ clk_put(pck);
+ clk_put(parent);
+ }
+
+ return;
+}
+#else
+void __init at91_add_device_isi(struct isi_platform_data * data,
+ int use_pck_as_mck) {}
+#endif
+

/* --------------------------------------------------------------------
* LCD Controller
diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index ad234cc..068464c 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -23,11 +23,13 @@
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/leds.h>
-#include <linux/clk.h>
#include <linux/atmel-mci.h>
+#include <linux/delay.h>

#include <mach/hardware.h>
#include <video/atmel_lcdc.h>
+#include <media/soc_camera.h>
+#include <media/atmel-isi.h>

#include <asm/setup.h>
#include <asm/mach-types.h>
@@ -187,6 +189,76 @@ static void __init ek_add_device_nand(void)


/*
+ * ISI
+ */
+static struct isi_platform_data __initdata isi_data = {
+ .frate = ISI_CFG1_FRATE_CAPTURE_ALL,
+ .has_emb_sync = 0,
+ .emb_crc_sync = 0,
+ .hsync_act_low = 0,
+ .vsync_act_low = 0,
+ .pclk_act_falling = 0,
+ /* to use codec and preview path simultaneously */
+ .full_mode = 1,
+ .data_width_flags = ISI_DATAWIDTH_8 | ISI_DATAWIDTH_10,
+ /* ISI_MCK is provided by programmable clock or external clock */
+ .mck_hz = 25000000,
+};
+
+
+/*
+ * soc-camera OV2640
+ */
+#if defined(CONFIG_SOC_CAMERA_OV2640) || \
+ defined(CONFIG_SOC_CAMERA_OV2640_MODULE)
+static unsigned long isi_camera_query_bus_param(struct soc_camera_link *link)
+{
+ /* ISI board for ek using default 8-bits connection */
+ return SOCAM_DATAWIDTH_8;
+}
+
+static int i2c_camera_power(struct device *dev, int on)
+{
+ /* enable or disable the camera */
+ pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
+ at91_set_gpio_output(AT91_PIN_PD13, !on);
+
+ if (!on)
+ goto out;
+
+ /* If enabled, give a reset impulse */
+ at91_set_gpio_output(AT91_PIN_PD12, 0);
+ msleep(20);
+ at91_set_gpio_output(AT91_PIN_PD12, 1);
+ msleep(100);
+
+out:
+ return 0;
+}
+
+static struct i2c_board_info i2c_camera = {
+ I2C_BOARD_INFO("ov2640", 0x30),
+};
+
+static struct soc_camera_link iclink_ov2640 = {
+ .bus_id = 0,
+ .board_info = &i2c_camera,
+ .i2c_adapter_id = 0,
+ .power = i2c_camera_power,
+ .query_bus_param = isi_camera_query_bus_param,
+};
+
+static struct platform_device isi_ov2640 = {
+ .name = "soc-camera-pdrv",
+ .id = 0,
+ .dev = {
+ .platform_data = &iclink_ov2640,
+ },
+};
+#endif
+
+
+/*
* LCD Controller
*/
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
@@ -378,7 +450,12 @@ static struct gpio_led ek_pwm_led[] = {
#endif
};

-
+static struct platform_device *devices[] __initdata = {
+#if defined(CONFIG_SOC_CAMERA_OV2640) || \
+ defined(CONFIG_SOC_CAMERA_OV2640_MODULE)
+ &isi_ov2640,
+#endif
+};

static void __init ek_board_init(void)
{
@@ -400,6 +477,8 @@ static void __init ek_board_init(void)
ek_add_device_nand();
/* I2C */
at91_add_device_i2c(0, NULL, 0);
+ /* ISI, using programmable clock as ISI_MCK */
+ at91_add_device_isi(&isi_data, 1);
/* LCD Controller */
at91_add_device_lcdc(&ek_lcdc_data);
/* Touch Screen */
@@ -411,6 +490,8 @@ static void __init ek_board_init(void)
/* LEDs */
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
+ /* Other platform devices */
+ platform_add_devices(devices, ARRAY_SIZE(devices));
}

MACHINE_START(AT91SAM9M10G45EK, "Atmel AT91SAM9M10G45-EK")
--
1.6.3.3


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