[REVIEW PATCH 2/2] Added OMAP3EVM Multi-Media Daughter Card Support

[hvaibhav@ti.com]

From: Vaibhav Hiremath <hvaibhav@ti.com>

This is first version of OMAP3EVM Mulit-Media Daughter
Card support.

Tested:
    - TVP5146 (BT656) decoder interface on top of
      Sergio's ISP-Camera patches.
    - Loopback application, capturing image through TVP5146
      and displaying it onto the TV/LCD on top of Hardik's
      V4L2 driver.
    - Basic functionality of HSUSB Transceiver USB-83320
    -

TODO:
    - Camera sensor support
    - Driver header file inclusion (dependency on ISP-Camera patches)
    - Some more clean-up may required.

Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Signed-off-by: Hardik Shah <hardik.shah@ti.com>
Signed-off-by: Manjunath Hadli <mrh@ti.com>
Signed-off-by: R Sivaraj <sivaraj@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
---
 arch/arm/mach-omap2/Kconfig             |    4 +
 arch/arm/mach-omap2/Makefile            |    1 +
 arch/arm/mach-omap2/board-omap3evm-dc.c |  417 +++++++++++++++++++++++++++++++
 arch/arm/mach-omap2/board-omap3evm-dc.h |   43 ++++
 arch/arm/mach-omap2/mux.c               |    7 +
 arch/arm/plat-omap/include/mach/mux.h   |    4 +
 6 files changed, 476 insertions(+), 0 deletions(-)
 mode change 100644 => 100755 arch/arm/mach-omap2/Kconfig
 mode change 100644 => 100755 arch/arm/mach-omap2/Makefile
 create mode 100755 arch/arm/mach-omap2/board-omap3evm-dc.c
 create mode 100755 arch/arm/mach-omap2/board-omap3evm-dc.h
 mode change 100644 => 100755 arch/arm/mach-omap2/mux.c
 mode change 100644 => 100755 arch/arm/plat-omap/include/mach/mux.h

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
old mode 100644
new mode 100755
index ca24a7a..094c97f
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -121,6 +121,10 @@ config MACH_OMAP3EVM
 	bool "OMAP 3530 EVM board"
 	depends on ARCH_OMAP3 && ARCH_OMAP34XX

+config MACH_OMAP3EVM_DC
+	bool "OMAP 3530 EVM daughter card board"
+	depends on ARCH_OMAP3 && ARCH_OMAP34XX && MACH_OMAP3EVM
+
 config MACH_OMAP3_BEAGLE
 	bool "OMAP3 BEAGLE board"
 	depends on ARCH_OMAP3 && ARCH_OMAP34XX
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
old mode 100644
new mode 100755
index 3897347..16fa35a
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_MACH_OMAP3EVM)		+= board-omap3evm.o \
 					   usb-musb.o usb-ehci.o \
 					   board-omap3evm-flash.o \
 					   twl4030-generic-scripts.o
+obj-$(CONFIG_MACH_OMAP3EVM_DC)		+= board-omap3evm-dc.o
 obj-$(CONFIG_MACH_OMAP3_BEAGLE)		+= board-omap3beagle.o \
 					   usb-musb.o usb-ehci.o \
 					   mmc-twl4030.o \
diff --git a/arch/arm/mach-omap2/board-omap3evm-dc.c b/arch/arm/mach-omap2/board-omap3evm-dc.c
new file mode 100755
index 0000000..233c219
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3evm-dc.c
@@ -0,0 +1,417 @@
+/*
+ * arch/arm/mach-omap2/board-omap3evm-dc.c
+ *
+ * Driver for OMAP3 EVM Daughter Card
+ *
+ * Copyright (C) 2008 Texas Instruments Inc
+ * Author: Vaibhav Hiremath <hvaibhav@ti.com>
+ *
+ * Contributors:
+ *     Anuj Aggarwal <anuj.aggarwal@ti.com>
+ *     Sivaraj R <sivaraj@ti.com>
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel_stat.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/io.h>
+#include <mach/mux.h>
+
+#if defined(CONFIG_VIDEO_TVP514X) || defined(CONFIG_VIDEO_TVP514X_MODULE)
+#include <linux/videodev2.h>
+#include <media/v4l2-int-device.h>
+#include <media/tvp514x.h>
+/* include V4L2 camera driver related header file */
+#if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+#include <../drivers/media/video/omap34xxcam.h>
+#include <../drivers/media/video/isp/ispreg.h>
+#endif				/* #ifdef CONFIG_VIDEO_OMAP3 */
+#endif				/* #ifdef CONFIG_VIDEO_TVP514X*/
+
+#include "board-omap3evm-dc.h"
+
+#define MODULE_NAME			"omap3evmdc"
+
+#ifdef DEBUG
+#define dprintk(fmt, args...) printk(KERN_ERR MODULE_NAME ": " fmt, ## args)
+#else
+#define dprintk(fmt, args...)
+#endif				/* #ifdef DEBUG */
+
+/* Macro Definitions */
+
+/* System control module register offsets */
+#define REG_CONTROL_PADCONF_I2C2_SDA	(0x480021C0u)
+#define REG_CONTROL_PADCONF_I2C3_SDA	(0x480021C4u)
+
+#define PADCONF_I2C3_SCL_MASK		(0xFFFF0000u)
+#define PADCONF_I2C3_SDA_MASK		(0x0000FFFFu)
+
+/* mux mode 0 (enable I2C3 SCL), pull-up enable, input enable */
+#define PADCONF_I2C3_SCL_DEF		(0x01180000u)
+/* mux mode 0 (enable I2C3 SDA), pull-up enable, input enable */
+#define PADCONF_I2C3_SDA_DEF		(0x00000118u)
+
+/* GPIO pins */
+#define GPIO134_SEL_Y                   (134)
+#define GPIO54_SEL_EXP_CAM              (54)
+#define GPIO136_SEL_CAM                 (136)
+
+/* board internal information (BEGIN) */
+
+/* I2C bus to which all I2C slave devices are attached */
+#define BOARD_I2C_BUSNUM		(3)
+
+/* I2C address of chips present in board */
+#define TVP5146_I2C_ADDR		(0x5D)
+
+/* Register offsets */
+#define REG_BUS_CTRL1			(0x00000180u)
+#define REG_BUS_CTRL2			(0x000001C0u)
+
+/* Bit defines for Bus Control 1 register */
+#define TVP5146_EN_SHIFT		(0x0000u)
+#define TVP5146_EN_MASK			(1u << TVP5146_EN_SHIFT)
+
+#define CAMERA_SENSOR_EN_SHIFT		(0x0008u)
+#define CAMERA_SENSOR_EN_MASK		(1u << CAMERA_SENSOR_EN_SHIFT)
+
+/* default value for bus control registers */
+#define BUS_CONTROL1_DEF		(0x0141u)	/* Disable all mux */
+#define BUS_CONTROL2_DEF		(0x010Au)	/* Disable all mux */
+
+#if defined(CONFIG_VIDEO_TVP514X) || defined(CONFIG_VIDEO_TVP514X_MODULE)
+#if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+static struct omap34xxcam_hw_config decoder_hwc = {
+	.dev_index = 0,
+	.dev_minor = 0,
+	.dev_type = OMAP34XXCAM_SLAVE_SENSOR,
+	.u.sensor.xclk = OMAP34XXCAM_XCLK_NONE,
+	.u.sensor.sensor_isp = 1,
+};
+
+static struct isp_interface_config tvp5146_if_config = {
+	.ccdc_par_ser = ISP_PARLL_YUV_BT,
+	.dataline_shift = 0x1,
+	.hsvs_syncdetect = ISPCTRL_SYNC_DETECT_VSRISE,
+	.vdint0_timing = 0x0,
+	.vdint1_timing = 0x0,
+	.strobe = 0x0,
+	.prestrobe = 0x0,
+	.shutter = 0x0,
+	.u.par.par_bridge = 0x0,
+	.u.par.par_clk_pol = 0x0,
+};
+#endif
+
+static struct v4l2_ifparm ifparm = {
+	.if_type = V4L2_IF_TYPE_BT656,
+	.u = {
+	      .bt656 = {
+			.frame_start_on_rising_vs = 1,
+			.bt_sync_correct = 0,
+			.swap = 0,
+			.latch_clk_inv = 0,
+			.nobt_hs_inv = 0,	/* active high */
+			.nobt_vs_inv = 0,	/* active high */
+			.mode = V4L2_IF_TYPE_BT656_MODE_BT_8BIT,
+			.clock_min = TVP514X_XCLK_BT656,
+			.clock_max = TVP514X_XCLK_BT656,
+			},
+	      },
+};
+
+/**
+ * @brief tvp5146_ifparm - Returns the TVP5146 decoder interface parameters
+ *
+ * @param p - pointer to v4l2_ifparm structure
+ *
+ * @return result of operation - 0 is success
+ */
+static int tvp5146_ifparm(struct v4l2_ifparm *p)
+{
+	if (p == NULL)
+		return -EINVAL;
+
+	*p = ifparm;
+	return 0;
+}
+
+/**
+ * @brief tvp5146_set_prv_data - Returns tvp5146 omap34xx driver private data
+ *
+ * @param priv - pointer to omap34xxcam_hw_config structure
+ *
+ * @return result of operation - 0 is success
+ */
+static int tvp5146_set_prv_data(void *priv)
+{
+#if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+	struct omap34xxcam_hw_config *hwc = priv;
+
+	if (priv == NULL)
+		return -EINVAL;
+
+	hwc->u.sensor.sensor_isp = decoder_hwc.u.sensor.sensor_isp;
+	hwc->u.sensor.xclk = decoder_hwc.u.sensor.xclk;
+	hwc->dev_index = decoder_hwc.dev_index;
+	hwc->dev_minor = decoder_hwc.dev_minor;
+	hwc->dev_type = decoder_hwc.dev_type;
+	return 0;
+#else
+	return -EINVAL;
+#endif
+}
+
+/**
+ * @brief omap3evmdc_set_mux - Sets mux to enable/disable signal routing to
+ *                             different peripherals present in board
+ * IMPORTANT - This function will take care of writing appropriate values for
+ * active low signals as well
+ *
+ * @param mux_id - enum, mux id to enable/disable
+ * @param value - enum, ENABLE_MUX for enabling and DISABLE_MUX for disabling
+ *
+ * @return result of operation - 0 is success
+ */
+static int omap3evmdc_set_mux(enum omap3evmdc_mux mux_id, enum config_mux value)
+{
+	int err = 0;
+
+	if (unlikely(mux_id >= NUM_MUX)) {
+		dprintk("Invalid mux id\n");
+		return -EPERM;
+	}
+
+
+	switch (mux_id) {
+	case MUX_TVP5146:
+		/* active low signal. set 0 to enable, 1 to disable */
+		if (ENABLE_MUX == value) {
+			/* pull down the GPIO GPIO134 = 0 */
+			gpio_set_value(GPIO134_SEL_Y, 0);
+			/* pull up the GPIO GPIO54 = 1 */
+			gpio_set_value(GPIO54_SEL_EXP_CAM, 1);
+			/* pull up the GPIO GPIO136 = 1 */
+			gpio_set_value(GPIO136_SEL_CAM, 1);
+		} else
+			/* pull up the GPIO GPIO134 = 0 */
+			gpio_set_value(GPIO134_SEL_Y, 1);
+
+		break;
+
+	case MUX_CAMERA_SENSOR:
+		/* active low signal. set 0 to enable, 1 to disable */
+		if (ENABLE_MUX == value) {
+			/* pull up the GPIO GPIO134 = 0 */
+			gpio_set_value(GPIO134_SEL_Y, 1);
+			/* pull up the GPIO GPIO54 = 1 */
+			gpio_set_value(GPIO54_SEL_EXP_CAM, 1);
+			/* pull down the GPIO GPIO136 = 1 */
+			gpio_set_value(GPIO136_SEL_CAM, 0);
+		} else
+			/* pull up the GPIO GPIO136 = 1 */
+			gpio_set_value(GPIO136_SEL_CAM, 1);
+
+		break;
+
+	case MUX_EXP_CAMERA_SENSOR:
+		/* active low signal. set 0 to enable, 1 to disable */
+		if (ENABLE_MUX == value) {
+			/* pull up the GPIO GPIO134 = 1 */
+			gpio_set_value(GPIO134_SEL_Y, 1);
+			/* pull down the GPIO GPIO54 = 1 */
+			gpio_set_value(GPIO54_SEL_EXP_CAM, 0);
+			/* pull up the GPIO GPIO136 = 1 */
+			gpio_set_value(GPIO136_SEL_CAM, 1);
+		} else
+			/* pull up the GPIO GPIO54 = 1 */
+			gpio_set_value(GPIO54_SEL_EXP_CAM, 1);
+
+		break;
+
+	case NUM_MUX:
+	default:
+		dprintk("Invalid mux id\n");
+		err = -EPERM;
+	}
+
+	return err;
+}
+/**
+ * @brief tvp5146_power_set - Power-on or power-off TVP5146 device
+ *
+ * @param power - enum, Power on/off, resume/standby
+ *
+ * @return result of operation - 0 is success
+ */
+static int tvp5146_power_set(enum v4l2_power power)
+{
+	switch (power) {
+	case V4L2_POWER_OFF:
+#if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+		if (isp_free_interface(ISP_PARLL_YUV_BT))
+			return -ENODEV;
+#endif
+		/* Disable mux for TVP5146 decoder data path */
+		if (omap3evmdc_set_mux(MUX_TVP5146, DISABLE_MUX))
+			return -ENODEV;
+		break;
+
+	case V4L2_POWER_STANDBY:
+		break;
+
+	case V4L2_POWER_ON:
+		/* Enable mux for TVP5146 decoder data path */
+		if (omap3evmdc_set_mux(MUX_TVP5146, ENABLE_MUX))
+			return -ENODEV;
+
+#if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+		if (isp_request_interface(ISP_PARLL_YUV_BT))
+			return -ENODEV;
+
+		isp_configure_interface(&tvp5146_if_config);
+#endif
+		break;
+
+	default:
+		return -ENODEV;
+		break;
+	}
+	return 0;
+}
+
+static struct tvp514x_platform_data tvp5146_pdata = {
+	.master = "omap34xxcam",
+	.power_set = tvp5146_power_set,
+	.priv_data_set = tvp5146_set_prv_data,
+	.ifparm = tvp5146_ifparm,
+
+	/* Some interface dependent params */
+	.clk_polarity = 0, /* data clocked out on falling edge */
+	.hs_polarity = 1, /* 0 - Active low, 1- Active high */
+	.vs_polarity = 1, /* 0 - Active low, 1- Active high */
+};
+
+static struct i2c_board_info __initdata tvp5146_i2c_board_info = {
+	I2C_BOARD_INFO("tvp5146m2", TVP5146_I2C_ADDR),
+	.platform_data = &tvp5146_pdata,
+};
+
+#endif				/* #ifdef CONFIG_VIDEO_TVP514X */
+
+/**
+ * @brief omap3evmdc_mdc_config - GPIO configuration for
+ *                          GPIO 134, 54 and 136
+ *
+ * @return result of operation - 0 is success
+ */
+static int omap3evmdc_mdc_config(void)
+{
+	/* Setting the MUX configuration */
+	omap_cfg_reg(GPIO134_VDIN_SEL_Y);
+	omap_cfg_reg(GPIO54_VDIN_SEL_EXP_CAM);
+	omap_cfg_reg(GPIO136_VDIN_SEL_CAM);
+
+	if (gpio_request(GPIO134_SEL_Y, "GPIO134_SEL_Y") < 0) {
+		dprintk("can't get GPIO 134\n");
+		return -EINVAL;
+	}
+
+	if (gpio_request(GPIO54_SEL_EXP_CAM, "GPIO54_SEL_EXP_CAM") < 0) {
+		dprintk("can't get GPIO 54\n");
+		return -EINVAL;
+	}
+
+	if (gpio_request(GPIO136_SEL_CAM, "GPIO136_SEL_CAM") < 0) {
+		dprintk("can't get GPIO 136\n");
+		return -EINVAL;
+	}
+
+	/* Make GPIO as output */
+	gpio_direction_output(GPIO134_SEL_Y, 0);
+	/* Make GPIO as output */
+	gpio_direction_output(GPIO54_SEL_EXP_CAM, 0);
+	/* Make GPIO as output */
+	gpio_direction_output(GPIO136_SEL_CAM, 0);
+
+	return 0;
+}
+
+/**
+ * @brief omap3evmdc_init - module init function. Should be called before any
+ *                          client driver init call
+ *
+ * @return result of operation - 0 is success
+ */
+static int __init omap3evmdc_init(void)
+{
+	int err;
+
+	/*
+	 * I2C3 SCL pin mux settings - mux mode 0, pull-up enable, input enable
+	 * Uses the MSB 16-bit of this register, retain the LSB 16-bit.
+	 * This pin is shared with gpio_184 (mux mode 4)
+	 */
+	omap_writel(((omap_readl(REG_CONTROL_PADCONF_I2C2_SDA) &
+		      ~PADCONF_I2C3_SCL_MASK) | PADCONF_I2C3_SCL_DEF),
+		    REG_CONTROL_PADCONF_I2C2_SDA);
+
+	/*
+	 * I2C3 SDA pin mux settings - mux mode 0, pull-up enable, input enable
+	 * Uses the LSB 16-bit of this register, retain the MSB 16-bit.
+	 * This pin is shared with gpio_185 (mux mode 4)
+	 */
+	omap_writel(((omap_readl(REG_CONTROL_PADCONF_I2C3_SDA) &
+		      ~PADCONF_I2C3_SDA_MASK) | PADCONF_I2C3_SDA_DEF),
+		    REG_CONTROL_PADCONF_I2C3_SDA);
+
+	err = omap3evmdc_mdc_config();
+	if (err) {
+		dprintk("MDC configuration failed \n");
+		return err;
+	}
+
+	/*
+	 * Register each of the I2C devices present in the board to the I2C
+	 * framework.
+	 * If more I2C devices are added, then each device information should
+	 * be registered with I2C using i2c_register_board_info().
+	 */
+#if defined(CONFIG_VIDEO_TVP514X) || defined(CONFIG_VIDEO_TVP514X_MODULE)
+	err = i2c_register_board_info(BOARD_I2C_BUSNUM,
+					&tvp5146_i2c_board_info, 1);
+	if (err) {
+		dprintk("TVP5146 I2C Board Registration failed \n");
+		return err;
+	}
+#endif
+
+	printk(KERN_INFO MODULE_NAME ": Driver registration complete \n");
+
+	return 0;
+}
+
+arch_initcall(omap3evmdc_init);
diff --git a/arch/arm/mach-omap2/board-omap3evm-dc.h b/arch/arm/mach-omap2/board-omap3evm-dc.h
new file mode 100755
index 0000000..5eaffc5
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3evm-dc.h
@@ -0,0 +1,43 @@
+/*
+ * arch/arm/mach-omap2/board-omap3evm-dc.h
+ *
+ * Copyright (C) 2008 Texas Instruments Inc
+ * Author: Vaibhav Hiremath <hvaibhav@ti.com>
+ *
+ * Contributors:
+ *    Anuj Aggarwal <anuj.aggarwal@ti.com>
+ *    Sivaraj R <sivaraj@ti.com>
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __BOARD_OMAP3EVM_DC_H_
+#define __BOARD_OMAP3EVM_DC_H_
+
+/* mux id to enable/disable signal routing to different peripherals */
+enum omap3evmdc_mux {
+	MUX_TVP5146 = 0,
+	MUX_CAMERA_SENSOR,
+	MUX_EXP_CAMERA_SENSOR,
+	NUM_MUX
+};
+
+/* enum to enable or disable mux */
+enum config_mux {
+	DISABLE_MUX,
+	ENABLE_MUX
+};
+
+#endif		/* __BOARD_OMAP3EVM_DC_H_ */
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
old mode 100644
new mode 100755
index dacb41f..5b878b6
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -459,6 +459,13 @@ MUX_CFG_34XX("AH8_34XX_GPIO29", 0x5fa,
 		OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT)
 MUX_CFG_34XX("J25_34XX_GPIO170", 0x1c6,
 		OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT)
+
+MUX_CFG_34XX("GPIO134_VDIN_SEL_Y", 0x160,
+		OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT)
+MUX_CFG_34XX("GPIO_54_VDIN_SEL_EXP_CAM", 0x0b4,
+		OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT)
+MUX_CFG_34XX("GPIO136_VDIN_SEL_CAM", 0x164,
+		OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT)
 };

 #define OMAP34XX_PINS_SZ	ARRAY_SIZE(omap34xx_pins)
diff --git a/arch/arm/plat-omap/include/mach/mux.h b/arch/arm/plat-omap/include/mach/mux.h
old mode 100644
new mode 100755
index f4362b8..2cd5cde
--- a/arch/arm/plat-omap/include/mach/mux.h
+++ b/arch/arm/plat-omap/include/mach/mux.h
@@ -790,6 +790,10 @@ enum omap34xx_index {
 	 */
 	AH8_34XX_GPIO29,
 	J25_34XX_GPIO170,
+
+	GPIO134_VDIN_SEL_Y,
+	GPIO54_VDIN_SEL_EXP_CAM,
+	GPIO136_VDIN_SEL_CAM,
 };

 struct omap_mux_cfg {
--
1.5.6

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