Re: [PATCH v2] ADP1653 board code for Nokia RX-51

["Pali Rohár" <pali.rohar@gmail.com>]

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On Sunday 17 February 2013 20:03:03 Aaro Koskinen wrote:
> Hi,
> 
> On Sun, Feb 17, 2013 at 04:16:49PM +0100, Pali Rohár wrote:
> > I'm sending ADP1653 flash torch board code for Nokia RX-51.
> > Kernel driver ADP1653 is already in upstream kernel. Board
> > code was extracted from this big camera meego patch:
> > 
> > https://api.pub.meego.com/public/source/CE:Adaptation:N900/k
> > ernel-adaptation-n900/linux-2.6-Camera-for-Meego-N900-Adapta
> > tion-kernel-2.6.37-patch.patch
> 
> You need to sign-off the patch.
> 

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>

> > --- /dev/null
> > +++ b/arch/arm/mach-omap2/board-rx51-camera.c
> 
> I'm not sure if adding a new file is sensible. There are
> already 3 board files for RX-51, which I think is overkill.
> 

You can see that camera board code is big, so code was moved
to separate file. Because not all camera drivers are upstreamed
yet there is no camera support in RX-51 board code. Current
peripheral file for RX-51 is big too and split camera code into
separate file can be usefull...

> > @@ -0,0 +1,177 @@
> > +/*
> > + * arch/arm/mach-omap2/board-rx51-camera.c
> > + *
> > + * Copyright (C) 2008 Nokia Corporation
> > + *
> > + * Contact: Sakari Ailus <sakari.ailus@nokia.com>
> > + *          Tuukka Toivonen <tuukka.o.toivonen@nokia.com>
> 
> You should put these people to CC... Just to see if the
> addresses are still valid (which I doubt).
> 

Ok, trying :-)

> > +static int __init rx51_adp1653_init(void)
> > +{
> > +	int err;
> > +
> > +	err = gpio_request(ADP1653_GPIO_ENABLE, "adp1653 enable");
> > +	if (err) {
> > +		printk(KERN_ERR ADP1653_NAME
> > +		       " Failed to request EN gpio\n");
> > +		err = -ENODEV;
> > +		goto err_omap_request_gpio;
> > +	}
> > +
> > +	err = gpio_request(ADP1653_GPIO_INT, "adp1653 interrupt");
> > +	if (err) {
> > +		printk(KERN_ERR ADP1653_NAME " Failed to request IRQ
> > gpio\n"); +		err = -ENODEV;
> > +		goto err_omap_request_gpio_2;
> > +	}
> > +
> > +	err = gpio_request(ADP1653_GPIO_STROBE, "adp1653 strobe");
> > +	if (err) {
> > +		printk(KERN_ERR ADP1653_NAME
> > +		       " Failed to request STROBE gpio\n");
> > +		err = -ENODEV;
> > +		goto err_omap_request_gpio_3;
> > +	}
> > +
> > +	gpio_direction_output(ADP1653_GPIO_ENABLE, 0);
> > +	gpio_direction_input(ADP1653_GPIO_INT);
> > +	gpio_direction_output(ADP1653_GPIO_STROBE, 0);
> 
> gpio_request_array() should be used.
> 

Ok, fixing this.

> > +void __init rx51_camera_init(void)
> > +{
> > +	if (rx51_camera_hw_init()) {
> > +		printk(KERN_WARNING "%s: Unable to initialize camera\n",
> > +		       __func__);
> > +		return;
> > +	}
> > +
> > +	if (omap3_init_camera(&rx51_isp_platform_data) < 0)
> > +		printk(KERN_WARNING "%s: Unable to register camera
> > platform " +		       "device\n", __func__);
> 
> pr_warn() should be used.
> 
> A.

Fixed too.

Here is new version v2 of this patch:

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 41b581f..268fa57 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -287,6 +287,7 @@ config MACH_NOKIA_RX51
 	depends on ARCH_OMAP3
 	default y
 	select OMAP_PACKAGE_CBB
+	select VIDEO_ADP1653 if VIDEO_OMAP3 && VIDEO_HELPER_CHIPS_AUTO
 
 config MACH_OMAP_ZOOM2
 	bool "OMAP3 Zoom2 board"
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 947cafe..f20f693 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -236,6 +236,7 @@ obj-$(CONFIG_MACH_NOKIA_RM680)		+= board-rm680.o sdram-nokia.o
 obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51.o sdram-nokia.o
 obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51-peripherals.o
 obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51-video.o
+obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51-camera.o
 obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom.o board-zoom-peripherals.o
 obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom-display.o
 obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom-debugboard.o
diff --git a/arch/arm/mach-omap2/board-rx51-camera.c b/arch/arm/mach-omap2/board-rx51-camera.c
new file mode 100644
index 0000000..80057ab
--- /dev/null
+++ b/arch/arm/mach-omap2/board-rx51-camera.c
@@ -0,0 +1,152 @@
+/*
+ * arch/arm/mach-omap2/board-rx51-camera.c
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * Contact: Sakari Ailus <sakari.ailus@nokia.com>
+ *          Tuukka Toivonen <tuukka.o.toivonen@nokia.com>
+ *
+ * This program 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include "../../../drivers/media/platform/omap3isp/isp.h"
+
+#include <media/adp1653.h>
+
+#include "devices.h"
+
+#define ADP1653_GPIO_ENABLE	88	/* Used for resetting ADP1653 */
+#define ADP1653_GPIO_INT	167	/* Fault interrupt */
+#define ADP1653_GPIO_STROBE	126	/* Pin used in cam_strobe mode ->
+					 * control using ISP drivers */
+
+static struct gpio rx51_adp1653_gpios[] __initdata = {
+	{ ADP1653_GPIO_ENABLE,	GPIOF_OUT_INIT_LOW,	"adp1653 enable" },
+	{ ADP1653_GPIO_INT,	GPIOF_IN,		"adp1653 interrupt" },
+	{ ADP1653_GPIO_STROBE,	GPIOF_OUT_INIT_LOW,	"adp1653 strobe" },
+};
+
+static int __init rx51_adp1653_init(void)
+{
+	int ret;
+
+	ret = gpio_request_array(rx51_adp1653_gpios,
+				 ARRAY_SIZE(rx51_adp1653_gpios));
+	if (ret < 0) {
+		pr_err(ADP1653_NAME ": Failed to request gpios\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int __init rx51_camera_hw_init(void)
+{
+	int rval;
+
+	rval = rx51_adp1653_init();
+	if (rval)
+		return rval;
+
+	return 0;
+}
+
+/*
+ *
+ * ADP1653
+ *
+ */
+
+static int rx51_adp1653_power(struct v4l2_subdev *subdev, int on)
+{
+	gpio_set_value(ADP1653_GPIO_ENABLE, on);
+	if (on) {
+		/* Some delay is apparently required. */
+		udelay(20);
+	}
+
+	return 0;
+}
+
+static struct adp1653_platform_data rx51_adp1653_platform_data = {
+	.power			 = rx51_adp1653_power,
+	/* Must be limited to 500 ms in RX-51 */
+	.max_flash_timeout	 = 500000,		/* us */
+	/* Must be limited to 320 mA in RX-51 B3 and newer hardware */
+	.max_flash_intensity	 = ADP1653_FLASH_INTENSITY_REG_TO_mA(19),
+	/* Must be limited to 50 mA in RX-51 */
+	.max_torch_intensity	 = ADP1653_FLASH_INTENSITY_REG_TO_mA(1),
+	.max_indicator_intensity = ADP1653_INDICATOR_INTENSITY_REG_TO_uA(
+		ADP1653_REG_OUT_SEL_ILED_MAX),
+};
+
+/*
+ *
+ * Init it all
+ *
+ */
+
+#define ADP1653_I2C_BUS_NUM		2
+
+static struct i2c_board_info rx51_camera_i2c_devices[] = {
+	{
+		I2C_BOARD_INFO(ADP1653_NAME, ADP1653_I2C_ADDR),
+		.platform_data = &rx51_adp1653_platform_data,
+	},
+};
+
+static struct isp_subdev_i2c_board_info rx51_camera_primary_subdevs[] = {
+	{
+		.board_info = &rx51_camera_i2c_devices[0],
+		.i2c_adapter_id = ADP1653_I2C_BUS_NUM,
+	},
+	{ NULL, 0, },
+};
+
+static struct isp_v4l2_subdevs_group rx51_camera_subdevs[] = {
+	{
+		.subdevs = rx51_camera_primary_subdevs,
+		.interface = ISP_INTERFACE_CCP2B_PHY1,
+		.bus = { .ccp2 = {
+			.strobe_clk_pol		= 0,
+			.crc			= 1,
+			.ccp2_mode		= 1,
+			.phy_layer		= 1,
+			.vpclk_div		= 1,
+		} },
+	},
+	{ NULL, 0, },
+};
+
+static struct isp_platform_data rx51_isp_platform_data = {
+	.subdevs = rx51_camera_subdevs,
+};
+
+void __init rx51_camera_init(void)
+{
+	if (rx51_camera_hw_init()) {
+		pr_warn("%s: Unable to initialize camera\n", __func__);
+		return;
+	}
+
+	if (omap3_init_camera(&rx51_isp_platform_data) < 0)
+		pr_warn("%s: Unable to register camera platform "
+		       "device\n", __func__);
+}
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index d0374ea..92117a13 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -75,6 +75,7 @@ static struct platform_device leds_gpio = {
 */
 
 extern void __init rx51_peripherals_init(void);
+extern void __init rx51_camera_init(void);
 
 #ifdef CONFIG_OMAP_MUX
 static struct omap_board_mux board_mux[] __initdata = {
@@ -100,6 +101,7 @@ static void __init rx51_init(void)
 
 	usb_musb_init(&musb_board_data);
 	rx51_peripherals_init();
+	rx51_camera_init();
 
 	/* Ensure SDRC pins are mux'd for self-refresh */
 	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
-- 
1.7.10.4

-- 
Pali Rohár
pali.rohar@gmail.com

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