From: Tony Lindgren <tony@atomide.com>
To: arun c <arunedarath@mistralsolutions.com>
Cc: linux-omap@vger.kernel.org
Subject: Re: [PATCH 1/1] This patch adds backlight control for omap3evm
Date: Thu, 3 Jul 2008 13:28:27 +0300 [thread overview]
Message-ID: <20080703102824.GL14276@atomide.com> (raw)
In-Reply-To: <c656a4d20807010522u2742a089qad5ec3316d0db15a@mail.gmail.com>
* arun c <arunedarath@mistralsolutions.com> [080701 15:25]:
> TWL4030 LEDdriver A(LEDA) is used here to control the LCD backlight
Pushing today.
Tony
> Signed-off-by: Arun C <arunedarath@mistralsolutions.com>
> ---
> drivers/video/omap/lcd_omap3evm.c | 39 +++++++++++++++++++++++++++++++++---
> 1 files changed, 35 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/omap/lcd_omap3evm.c
> b/drivers/video/omap/lcd_omap3evm.c
> index 5d2ed04..f5a1477 100644
> --- a/drivers/video/omap/lcd_omap3evm.c
> +++ b/drivers/video/omap/lcd_omap3evm.c
> @@ -45,6 +45,12 @@
> #define ENABLE_VPLL2_DEDICATED 0x05
> #define ENABLE_VPLL2_DEV_GRP 0xE0
>
> +#define TWL_LED_LEDEN 0x00
> +#define TWL_PWMA_PWMAON 0x00
> +#define TWL_PWMA_PWMAOFF 0x01
> +
> +static unsigned int bklight_level;
> +
> static int omap3evm_panel_init(struct lcd_panel *panel,
> struct omapfb_device *fbdev)
> {
> @@ -60,10 +66,10 @@ static int omap3evm_panel_init(struct lcd_panel *panel,
> omap_set_gpio_direction(LCD_PANEL_RESB, 0);
> omap_set_gpio_direction(LCD_PANEL_QVGA, 0);
>
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x7F, 0);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x7F, 1);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMB, 0x7F, 0);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMB, 0x7F, 1);
> + twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF);
> + bklight_level = 100;
>
> omap_set_gpio_dataout(LCD_PANEL_RESB, 1);
> omap_set_gpio_dataout(LCD_PANEL_INI, 1);
> @@ -94,6 +100,28 @@ static unsigned long
> omap3evm_panel_get_caps(struct lcd_panel *panel)
> return 0;
> }
>
> +static int omap3evm_bklight_setlevel(struct lcd_panel *panel,
> + unsigned int level)
> +{
> + u8 c;
> + if ((level >= 0) && (level <= 100)) {
> + c = (125 * (100 - level)) / 100 + 2;
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF);
> + bklight_level = level;
> + }
> + return 0;
> +}
> +
> +static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel)
> +{
> + return bklight_level;
> +}
> +
> +static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel)
> +{
> + return 100;
> +}
> +
> struct lcd_panel omap3evm_panel = {
> .name = "omap3evm",
> .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
> @@ -117,6 +145,9 @@ struct lcd_panel omap3evm_panel = {
> .enable = omap3evm_panel_enable,
> .disable = omap3evm_panel_disable,
> .get_caps = omap3evm_panel_get_caps,
> + .set_bklight_level = omap3evm_bklight_setlevel,
> + .get_bklight_level = omap3evm_bklight_getlevel,
> + .get_bklight_max = omap3evm_bklight_getmaxlevel,
> };
>
> static int omap3evm_panel_probe(struct platform_device *pdev)
> --
> 1.5.5.3
> From 92a1094c65e90ae0f0fe5b970f733d584d2f7201 Mon Sep 17 00:00:00 2001
> From: Arun C <arunedarath@mistralsolutions.com>
> Date: Tue, 1 Jul 2008 16:54:55 +0530
> Subject: [PATCH] This patch adds backlight control for omap3evm
>
> TWL4030 LEDdriver A(LEDA) is used here to control the LCD backlight
>
> Signed-off-by: Arun C <arunedarath@mistralsolutions.com>
> ---
> drivers/video/omap/lcd_omap3evm.c | 39 +++++++++++++++++++++++++++++++++---
> 1 files changed, 35 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/omap/lcd_omap3evm.c b/drivers/video/omap/lcd_omap3evm.c
> index 5d2ed04..f5a1477 100644
> --- a/drivers/video/omap/lcd_omap3evm.c
> +++ b/drivers/video/omap/lcd_omap3evm.c
> @@ -45,6 +45,12 @@
> #define ENABLE_VPLL2_DEDICATED 0x05
> #define ENABLE_VPLL2_DEV_GRP 0xE0
>
> +#define TWL_LED_LEDEN 0x00
> +#define TWL_PWMA_PWMAON 0x00
> +#define TWL_PWMA_PWMAOFF 0x01
> +
> +static unsigned int bklight_level;
> +
> static int omap3evm_panel_init(struct lcd_panel *panel,
> struct omapfb_device *fbdev)
> {
> @@ -60,10 +66,10 @@ static int omap3evm_panel_init(struct lcd_panel *panel,
> omap_set_gpio_direction(LCD_PANEL_RESB, 0);
> omap_set_gpio_direction(LCD_PANEL_QVGA, 0);
>
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x7F, 0);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x7F, 1);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMB, 0x7F, 0);
> - twl4030_i2c_write_u8(TWL4030_MODULE_PWMB, 0x7F, 1);
> + twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON);
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF);
> + bklight_level = 100;
>
> omap_set_gpio_dataout(LCD_PANEL_RESB, 1);
> omap_set_gpio_dataout(LCD_PANEL_INI, 1);
> @@ -94,6 +100,28 @@ static unsigned long omap3evm_panel_get_caps(struct lcd_panel *panel)
> return 0;
> }
>
> +static int omap3evm_bklight_setlevel(struct lcd_panel *panel,
> + unsigned int level)
> +{
> + u8 c;
> + if ((level >= 0) && (level <= 100)) {
> + c = (125 * (100 - level)) / 100 + 2;
> + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF);
> + bklight_level = level;
> + }
> + return 0;
> +}
> +
> +static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel)
> +{
> + return bklight_level;
> +}
> +
> +static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel)
> +{
> + return 100;
> +}
> +
> struct lcd_panel omap3evm_panel = {
> .name = "omap3evm",
> .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
> @@ -117,6 +145,9 @@ struct lcd_panel omap3evm_panel = {
> .enable = omap3evm_panel_enable,
> .disable = omap3evm_panel_disable,
> .get_caps = omap3evm_panel_get_caps,
> + .set_bklight_level = omap3evm_bklight_setlevel,
> + .get_bklight_level = omap3evm_bklight_getlevel,
> + .get_bklight_max = omap3evm_bklight_getmaxlevel,
> };
>
> static int omap3evm_panel_probe(struct platform_device *pdev)
> --
> 1.5.5.3
>
prev parent reply other threads:[~2008-07-03 12:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-01 12:22 [PATCH 1/1] This patch adds backlight control for omap3evm arun c
2008-07-03 10:28 ` Tony Lindgren [this message]
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