Re: [PATCH v2] mt9v032: Use the common clock framework
Hi Laurent, On 08/09/2013 01:24 PM, Laurent Pinchart wrote: Configure the device external clock using the common clock framework instead of a board code callback function. Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com Thanks for the patch. Acked-by: Sylwester Nawrocki s.nawro...@samsung.com --- drivers/media/i2c/mt9v032.c | 17 +++-- include/media/mt9v032.h | 4 2 files changed, 11 insertions(+), 10 deletions(-) Changes since v1: - Set the pixel clock rate with clk_set_rate() diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index 60c6f67..2c50eff 100644 --- a/drivers/media/i2c/mt9v032.c +++ b/drivers/media/i2c/mt9v032.c @@ -12,6 +12,7 @@ * published by the Free Software Foundation. */ +#include linux/clk.h #include linux/delay.h #include linux/i2c.h #include linux/log2.h @@ -135,6 +136,8 @@ struct mt9v032 { struct mutex power_lock; int power_count; + struct clk *clk; + struct mt9v032_platform_data *pdata; u32 sysclk; @@ -219,10 +222,9 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) struct i2c_client *client = v4l2_get_subdevdata(mt9v032-subdev); int ret; - if (mt9v032-pdata-set_clock) { - mt9v032-pdata-set_clock(mt9v032-subdev, mt9v032-sysclk); - udelay(1); - } + clk_set_rate(mt9v032-clk, mt9v032-sysclk); + clk_prepare_enable(mt9v032-clk); + udelay(1); /* Reset the chip and stop data read out */ ret = mt9v032_write(client, MT9V032_RESET, 1); @@ -238,8 +240,7 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) static void mt9v032_power_off(struct mt9v032 *mt9v032) { - if (mt9v032-pdata-set_clock) - mt9v032-pdata-set_clock(mt9v032-subdev, 0); + clk_disable_unprepare(mt9v032-clk); } static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on) @@ -748,6 +749,10 @@ static int mt9v032_probe(struct i2c_client *client, if (!mt9v032) return -ENOMEM; + mt9v032-clk = devm_clk_get(client-dev, NULL); + if (IS_ERR(mt9v032-clk)) + return PTR_ERR(mt9v032-clk); + mutex_init(mt9v032-power_lock); mt9v032-pdata = pdata; diff --git a/include/media/mt9v032.h b/include/media/mt9v032.h index 78fd39e..12175a6 100644 --- a/include/media/mt9v032.h +++ b/include/media/mt9v032.h @@ -1,13 +1,9 @@ #ifndef _MEDIA_MT9V032_H #define _MEDIA_MT9V032_H -struct v4l2_subdev; - struct mt9v032_platform_data { unsigned int clk_pol:1; - void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate); - const s64 *link_freqs; s64 link_def_freq; }; Regards, -- Sylwester Nawrocki Samsung RD Institute Poland -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [v2] mt9v032: Use the common clock framework
Hi Peter, On Tuesday 13 August 2013 04:31:30 Peter A. Bigot wrote: FWIW: I found it necessary to use this along with http://git.linuxtv.org/pinchartl/media.git/shortlog/refs/heads/board/overo/ mt9v032 to get the Caspa to work on Gumstix under Linux 3.10. That's expected :-) Work is still needed to implement device tree support in the OMAP3 ISP driver, after that we shouldn't need any board code modification anymore. (Without configuring the clock the device won't respond to I2C operations. It still doesn't work right, but that may not be a driver problem. It's also necessary under 3.8, which has serious problems with CCDC idle messages that I haven't tracked down yet.) -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [v2] mt9v032: Use the common clock framework
FWIW: I found it necessary to use this along with http://git.linuxtv.org/pinchartl/media.git/shortlog/refs/heads/board/overo/mt9v032 to get the Caspa to work on Gumstix under Linux 3.10. (Without configuring the clock the device won't respond to I2C operations. It still doesn't work right, but that may not be a driver problem. It's also necessary under 3.8, which has serious problems with CCDC idle messages that I haven't tracked down yet.) Peter On 08/09/2013 05:24 AM, Laurent Pinchart wrote: Configure the device external clock using the common clock framework instead of a board code callback function. Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- drivers/media/i2c/mt9v032.c | 17 +++-- include/media/mt9v032.h | 4 2 files changed, 11 insertions(+), 10 deletions(-) Changes since v1: - Set the pixel clock rate with clk_set_rate() diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index 60c6f67..2c50eff 100644 --- a/drivers/media/i2c/mt9v032.c +++ b/drivers/media/i2c/mt9v032.c @@ -12,6 +12,7 @@ * published by the Free Software Foundation. */ +#include linux/clk.h #include linux/delay.h #include linux/i2c.h #include linux/log2.h @@ -135,6 +136,8 @@ struct mt9v032 { struct mutex power_lock; int power_count; + struct clk *clk; + struct mt9v032_platform_data *pdata; u32 sysclk; @@ -219,10 +222,9 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) struct i2c_client *client = v4l2_get_subdevdata(mt9v032-subdev); int ret; - if (mt9v032-pdata-set_clock) { - mt9v032-pdata-set_clock(mt9v032-subdev, mt9v032-sysclk); - udelay(1); - } + clk_set_rate(mt9v032-clk, mt9v032-sysclk); + clk_prepare_enable(mt9v032-clk); + udelay(1); /* Reset the chip and stop data read out */ ret = mt9v032_write(client, MT9V032_RESET, 1); @@ -238,8 +240,7 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) static void mt9v032_power_off(struct mt9v032 *mt9v032) { - if (mt9v032-pdata-set_clock) - mt9v032-pdata-set_clock(mt9v032-subdev, 0); + clk_disable_unprepare(mt9v032-clk); } static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on) @@ -748,6 +749,10 @@ static int mt9v032_probe(struct i2c_client *client, if (!mt9v032) return -ENOMEM; + mt9v032-clk = devm_clk_get(client-dev, NULL); + if (IS_ERR(mt9v032-clk)) + return PTR_ERR(mt9v032-clk); + mutex_init(mt9v032-power_lock); mt9v032-pdata = pdata; diff --git a/include/media/mt9v032.h b/include/media/mt9v032.h index 78fd39e..12175a6 100644 --- a/include/media/mt9v032.h +++ b/include/media/mt9v032.h @@ -1,13 +1,9 @@ #ifndef _MEDIA_MT9V032_H #define _MEDIA_MT9V032_H -struct v4l2_subdev; - struct mt9v032_platform_data { unsigned int clk_pol:1; - void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate); - const s64 *link_freqs; s64 link_def_freq; }; -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v2] mt9v032: Use the common clock framework
Configure the device external clock using the common clock framework instead of a board code callback function. Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com --- drivers/media/i2c/mt9v032.c | 17 +++-- include/media/mt9v032.h | 4 2 files changed, 11 insertions(+), 10 deletions(-) Changes since v1: - Set the pixel clock rate with clk_set_rate() diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index 60c6f67..2c50eff 100644 --- a/drivers/media/i2c/mt9v032.c +++ b/drivers/media/i2c/mt9v032.c @@ -12,6 +12,7 @@ * published by the Free Software Foundation. */ +#include linux/clk.h #include linux/delay.h #include linux/i2c.h #include linux/log2.h @@ -135,6 +136,8 @@ struct mt9v032 { struct mutex power_lock; int power_count; + struct clk *clk; + struct mt9v032_platform_data *pdata; u32 sysclk; @@ -219,10 +222,9 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) struct i2c_client *client = v4l2_get_subdevdata(mt9v032-subdev); int ret; - if (mt9v032-pdata-set_clock) { - mt9v032-pdata-set_clock(mt9v032-subdev, mt9v032-sysclk); - udelay(1); - } + clk_set_rate(mt9v032-clk, mt9v032-sysclk); + clk_prepare_enable(mt9v032-clk); + udelay(1); /* Reset the chip and stop data read out */ ret = mt9v032_write(client, MT9V032_RESET, 1); @@ -238,8 +240,7 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032) static void mt9v032_power_off(struct mt9v032 *mt9v032) { - if (mt9v032-pdata-set_clock) - mt9v032-pdata-set_clock(mt9v032-subdev, 0); + clk_disable_unprepare(mt9v032-clk); } static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on) @@ -748,6 +749,10 @@ static int mt9v032_probe(struct i2c_client *client, if (!mt9v032) return -ENOMEM; + mt9v032-clk = devm_clk_get(client-dev, NULL); + if (IS_ERR(mt9v032-clk)) + return PTR_ERR(mt9v032-clk); + mutex_init(mt9v032-power_lock); mt9v032-pdata = pdata; diff --git a/include/media/mt9v032.h b/include/media/mt9v032.h index 78fd39e..12175a6 100644 --- a/include/media/mt9v032.h +++ b/include/media/mt9v032.h @@ -1,13 +1,9 @@ #ifndef _MEDIA_MT9V032_H #define _MEDIA_MT9V032_H -struct v4l2_subdev; - struct mt9v032_platform_data { unsigned int clk_pol:1; - void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate); - const s64 *link_freqs; s64 link_def_freq; }; -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html