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Date: Tue, 13 Mar 2012 17:05:29 +0200
From: Alex Gershgorin <alexg@...rolight.com>
To: Sascha Hauer <s.hauer@...gutronix.de>
CC: <linux-kernel@...r.kernel.org>, <g.liakhovetski@....de>,
<fabio.estevam@...escale.com>, <linux-media@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
Alex Gershgorin <alexg@...rolight.com>
Subject: [PATCH v1] i.MX35-PDK: Add Camera support
In i.MX35-PDK, OV2640 camera is populated on the
personality board. This camera is registered as a subdevice via soc-camera interface.
Signed-off-by: Alex Gershgorin <alexg@...rolight.com>
---
arch/arm/mach-imx/mach-mx35_3ds.c | 96 +++++++++++++++++++++++++++++++++++++
1 files changed, 96 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
index 0af6c9c..a7dd8e6 100644
--- a/arch/arm/mach-imx/mach-mx35_3ds.c
+++ b/arch/arm/mach-imx/mach-mx35_3ds.c
@@ -4,6 +4,11 @@
*
* Author: Fabio Estevam <fabio.estevam@...escale.com>
*
+ * Copyright (C) 2011 Meprolight, Ltd.
+ * Alex Gershgorin <alexg@...rolight.com>
+ *
+ * Modified from i.MX31 3-Stack Development System
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@@ -34,6 +39,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
+#include <asm/memblock.h>
#include <mach/hardware.h>
#include <mach/common.h>
@@ -41,6 +47,8 @@
#include <mach/irqs.h>
#include <mach/3ds_debugboard.h>
+#include <media/soc_camera.h>
+
#include "devices-imx35.h"
#define EXPIO_PARENT_INT gpio_to_irq(IMX_GPIO_NR(1, 1))
@@ -120,6 +128,83 @@ static iomux_v3_cfg_t mx35pdk_pads[] = {
/* I2C1 */
MX35_PAD_I2C1_CLK__I2C1_SCL,
MX35_PAD_I2C1_DAT__I2C1_SDA,
+ /* CSI */
+ MX35_PAD_TX1__IPU_CSI_D_6,
+ MX35_PAD_TX0__IPU_CSI_D_7,
+ MX35_PAD_CSI_D8__IPU_CSI_D_8,
+ MX35_PAD_CSI_D9__IPU_CSI_D_9,
+ MX35_PAD_CSI_D10__IPU_CSI_D_10,
+ MX35_PAD_CSI_D11__IPU_CSI_D_11,
+ MX35_PAD_CSI_D12__IPU_CSI_D_12,
+ MX35_PAD_CSI_D13__IPU_CSI_D_13,
+ MX35_PAD_CSI_D14__IPU_CSI_D_14,
+ MX35_PAD_CSI_D15__IPU_CSI_D_15,
+ MX35_PAD_CSI_HSYNC__IPU_CSI_HSYNC,
+ MX35_PAD_CSI_MCLK__IPU_CSI_MCLK,
+ MX35_PAD_CSI_PIXCLK__IPU_CSI_PIXCLK,
+ MX35_PAD_CSI_VSYNC__IPU_CSI_VSYNC,
+};
+
+/*
+ * Camera support
+*/
+static phys_addr_t mx3_camera_base __initdata;
+#define MX35_3DS_CAMERA_BUF_SIZE SZ_8M
+
+static const struct mx3_camera_pdata mx35_3ds_camera_pdata __initconst = {
+ .flags = MX3_CAMERA_DATAWIDTH_8,
+ .mclk_10khz = 2000,
+};
+
+static int __init imx35_3ds_init_camera(void)
+{
+ int dma, ret = -ENOMEM;
+ struct platform_device *pdev =
+ imx35_alloc_mx3_camera(&mx35_3ds_camera_pdata);
+
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ if (!mx3_camera_base)
+ goto err;
+
+ dma = dma_declare_coherent_memory(&pdev->dev,
+ mx3_camera_base, mx3_camera_base,
+ MX35_3DS_CAMERA_BUF_SIZE,
+ DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
+
+ if (!(dma & DMA_MEMORY_MAP))
+ goto err;
+
+ ret = platform_device_add(pdev);
+ if (ret)
+err:
+ platform_device_put(pdev);
+
+ return ret;
+}
+
+static const struct ipu_platform_data mx35_3ds_ipu_data __initconst = {
+ .irq_base = MXC_IPU_IRQ_START,
+};
+
+static struct i2c_board_info mx35_3ds_i2c_camera = {
+ I2C_BOARD_INFO("ov2640", 0x30),
+};
+
+static struct soc_camera_link iclink_ov2640 = {
+ .bus_id = 0,
+ .board_info = &mx35_3ds_i2c_camera,
+ .i2c_adapter_id = 0,
+ .power = NULL,
+};
+
+static struct platform_device mx35_3ds_ov2640 = {
+ .name = "soc-camera-pdrv",
+ .id = 0,
+ .dev = {
+ .platform_data = &iclink_ov2640,
+ },
};
static int mx35_3ds_otg_init(struct platform_device *pdev)
@@ -204,6 +289,9 @@ static void __init mx35_3ds_init(void)
pr_warn("Init of the debugboard failed, all "
"devices on the debugboard are unusable.\n");
imx35_add_imx_i2c0(&mx35_3ds_i2c0_data);
+ imx35_add_ipu_core(&mx35_3ds_ipu_data);
+ platform_device_register(&mx35_3ds_ov2640);
+ imx35_3ds_init_camera();
}
static void __init mx35pdk_timer_init(void)
@@ -215,6 +303,13 @@ struct sys_timer mx35pdk_timer = {
.init = mx35pdk_timer_init,
};
+static void __init mx35_3ds_reserve(void)
+{
+ /* reserve MX35_3DS_CAMERA_BUF_SIZE bytes for mx3-camera */
+ mx3_camera_base = arm_memblock_steal(MX35_3DS_CAMERA_BUF_SIZE,
+ MX35_3DS_CAMERA_BUF_SIZE);
+}
+
MACHINE_START(MX35_3DS, "Freescale MX35PDK")
/* Maintainer: Freescale Semiconductor, Inc */
.atag_offset = 0x100,
@@ -224,5 +319,6 @@ MACHINE_START(MX35_3DS, "Freescale MX35PDK")
.handle_irq = imx35_handle_irq,
.timer = &mx35pdk_timer,
.init_machine = mx35_3ds_init,
+ .reserve = mx35_3ds_reserve,
.restart = mxc_restart,
MACHINE_END
--
1.7.0.4
--
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