All of lore.kernel.org
 help / color / mirror / Atom feed
From: Banajit Goswami <banajit.g@samsung.com>
To: linux-samsung-soc@vger.kernel.org
Cc: kgene.kim@samsung.com, ben-linux@fluff.org,
	linux-arm-kernel@lists.infradead.org,
	Banajit Goswami <banajit.g@samsung.com>
Subject: [PATCH] ARM: EXYNOS4: Add PWM backlight support on Samsung SMDKV310
Date: Wed, 22 Jun 2011 12:11:15 +0530	[thread overview]
Message-ID: <1308724875-32724-1-git-send-email-banajit.g@samsung.com> (raw)

This patch adds support for LCD backlight using PWM timer for
Samsung SMDKV310 board.

Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
---
 arch/arm/mach-exynos4/Kconfig         |    1 +
 arch/arm/mach-exynos4/mach-smdkv310.c |   43 +++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 1435fc3..9ab53bc 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -128,6 +128,7 @@ config MACH_SMDKV310
 	select S3C_DEV_HSMMC2
 	select S3C_DEV_HSMMC3
 	select SAMSUNG_DEV_KEYPAD
+	select SAMSUNG_DEV_PWM
 	select EXYNOS4_DEV_PD
 	select EXYNOS4_DEV_SYSMMU
 	select EXYNOS4_SETUP_I2C1
diff --git a/arch/arm/mach-exynos4/mach-smdkv310.c b/arch/arm/mach-exynos4/mach-smdkv310.c
index 7e3ee6c..b097ef6 100644
--- a/arch/arm/mach-exynos4/mach-smdkv310.c
+++ b/arch/arm/mach-exynos4/mach-smdkv310.c
@@ -16,6 +16,7 @@
 #include <linux/io.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -29,6 +30,7 @@
 #include <plat/sdhci.h>
 #include <plat/iic.h>
 #include <plat/pd.h>
+#include <plat/gpio-cfg.h>
 
 #include <mach/map.h>
 
@@ -172,6 +174,45 @@ static struct i2c_board_info i2c_devs1[] __initdata = {
 	{I2C_BOARD_INFO("wm8994", 0x1a),},
 };
 
+static int smdkv310_backlight_init(struct device *dev)
+{
+	int ret = 0;
+
+	ret = gpio_request(EXYNOS4_GPD0(1), "Backlight");
+	if (ret) {
+		printk(KERN_ERR "failed to request GPD for PWM-OUT0\n");
+		return ret;
+	}
+
+	/* Configure GPIO pin with EXYNOS4_GPD_0_1_TOUT_0 */
+	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), S3C_GPIO_SFN(2));
+
+	return 0;
+}
+
+static void smdkv310_backlight_exit(struct device *dev)
+{
+	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), S3C_GPIO_OUTPUT);
+	gpio_free(EXYNOS4_GPD0(1));
+}
+
+static struct platform_pwm_backlight_data smdkv310_backlight_data = {
+	.pwm_id		= 1,
+	.max_brightness	= 255,
+	.dft_brightness	= 255,
+	.pwm_period_ns	= 78770,
+	.init		= smdkv310_backlight_init,
+	.exit		= smdkv310_backlight_exit,
+};
+
+static struct platform_device smdkv310_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent		= &s3c_device_timer[1].dev,
+		.platform_data	= &smdkv310_backlight_data,
+	},
+};
+
 static struct platform_device *smdkv310_devices[] __initdata = {
 	&s3c_device_hsmmc0,
 	&s3c_device_hsmmc1,
@@ -195,6 +236,8 @@ static struct platform_device *smdkv310_devices[] __initdata = {
 	&samsung_asoc_dma,
 	&smdkv310_smsc911x,
 	&smdkv310_pcm_device,
+	&s3c_device_timer[1],
+	&smdkv310_backlight_device,
 };
 
 static void __init smdkv310_smsc911x_init(void)
-- 
1.6.5.2

WARNING: multiple messages have this Message-ID (diff)
From: banajit.g@samsung.com (Banajit Goswami)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: EXYNOS4: Add PWM backlight support on Samsung SMDKV310
Date: Wed, 22 Jun 2011 12:11:15 +0530	[thread overview]
Message-ID: <1308724875-32724-1-git-send-email-banajit.g@samsung.com> (raw)

This patch adds support for LCD backlight using PWM timer for
Samsung SMDKV310 board.

Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
---
 arch/arm/mach-exynos4/Kconfig         |    1 +
 arch/arm/mach-exynos4/mach-smdkv310.c |   43 +++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 1435fc3..9ab53bc 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -128,6 +128,7 @@ config MACH_SMDKV310
 	select S3C_DEV_HSMMC2
 	select S3C_DEV_HSMMC3
 	select SAMSUNG_DEV_KEYPAD
+	select SAMSUNG_DEV_PWM
 	select EXYNOS4_DEV_PD
 	select EXYNOS4_DEV_SYSMMU
 	select EXYNOS4_SETUP_I2C1
diff --git a/arch/arm/mach-exynos4/mach-smdkv310.c b/arch/arm/mach-exynos4/mach-smdkv310.c
index 7e3ee6c..b097ef6 100644
--- a/arch/arm/mach-exynos4/mach-smdkv310.c
+++ b/arch/arm/mach-exynos4/mach-smdkv310.c
@@ -16,6 +16,7 @@
 #include <linux/io.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -29,6 +30,7 @@
 #include <plat/sdhci.h>
 #include <plat/iic.h>
 #include <plat/pd.h>
+#include <plat/gpio-cfg.h>
 
 #include <mach/map.h>
 
@@ -172,6 +174,45 @@ static struct i2c_board_info i2c_devs1[] __initdata = {
 	{I2C_BOARD_INFO("wm8994", 0x1a),},
 };
 
+static int smdkv310_backlight_init(struct device *dev)
+{
+	int ret = 0;
+
+	ret = gpio_request(EXYNOS4_GPD0(1), "Backlight");
+	if (ret) {
+		printk(KERN_ERR "failed to request GPD for PWM-OUT0\n");
+		return ret;
+	}
+
+	/* Configure GPIO pin with EXYNOS4_GPD_0_1_TOUT_0 */
+	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), S3C_GPIO_SFN(2));
+
+	return 0;
+}
+
+static void smdkv310_backlight_exit(struct device *dev)
+{
+	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), S3C_GPIO_OUTPUT);
+	gpio_free(EXYNOS4_GPD0(1));
+}
+
+static struct platform_pwm_backlight_data smdkv310_backlight_data = {
+	.pwm_id		= 1,
+	.max_brightness	= 255,
+	.dft_brightness	= 255,
+	.pwm_period_ns	= 78770,
+	.init		= smdkv310_backlight_init,
+	.exit		= smdkv310_backlight_exit,
+};
+
+static struct platform_device smdkv310_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent		= &s3c_device_timer[1].dev,
+		.platform_data	= &smdkv310_backlight_data,
+	},
+};
+
 static struct platform_device *smdkv310_devices[] __initdata = {
 	&s3c_device_hsmmc0,
 	&s3c_device_hsmmc1,
@@ -195,6 +236,8 @@ static struct platform_device *smdkv310_devices[] __initdata = {
 	&samsung_asoc_dma,
 	&smdkv310_smsc911x,
 	&smdkv310_pcm_device,
+	&s3c_device_timer[1],
+	&smdkv310_backlight_device,
 };
 
 static void __init smdkv310_smsc911x_init(void)
-- 
1.6.5.2

             reply	other threads:[~2011-06-22  6:41 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-22  6:41 Banajit Goswami [this message]
2011-06-22  6:41 ` [PATCH] ARM: EXYNOS4: Add PWM backlight support on Samsung SMDKV310 Banajit Goswami
2011-06-22  6:56 JinGoo Han
     [not found] ` <BANLkTi=SqB7NHQ7vStegFgQjihoQRmzVCw@mail.gmail.com>
2011-06-23 10:12   ` Banajit Goswami
2011-06-23 10:12     ` Banajit Goswami
2011-06-23 11:44     ` Kukjin Kim
2011-06-23 11:44       ` Kukjin Kim
2011-06-23 13:53       ` Banajit Goswami
2011-06-23 13:53         ` Banajit Goswami

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1308724875-32724-1-git-send-email-banajit.g@samsung.com \
    --to=banajit.g@samsung.com \
    --cc=ben-linux@fluff.org \
    --cc=kgene.kim@samsung.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.