From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH v3 3/5] ARM: mach-shmobile: armadillo800eva: Add backlight support
Date: Fri, 26 Oct 2012 13:38:49 +0000 [thread overview]
Message-ID: <1351258731-14111-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com> (raw)
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
The flat panel backlight on the Armadillo 800 EVA board is driven by the
TPU PWM output.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Simon Horman <horms@verge.net.au>
---
arch/arm/mach-shmobile/board-armadillo800eva.c | 51 ++++++++++++++++++++++--
1 files changed, 47 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c
index 3cc8b1c..7ac7c41 100644
--- a/arch/arm/mach-shmobile/board-armadillo800eva.c
+++ b/arch/arm/mach-shmobile/board-armadillo800eva.c
@@ -28,6 +28,7 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
+#include <linux/pwm_backlight.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/sh_eth.h>
@@ -37,6 +38,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/sh_mobile_sdhi.h>
+#include <linux/platform_data/pwm-rmob.h>
#include <linux/i2c-gpio.h>
#include <mach/common.h>
#include <mach/irqs.h>
@@ -370,7 +372,49 @@ static struct platform_device sh_eth_device = {
.num_resources = ARRAY_SIZE(sh_eth_resources),
};
-/* LCDC */
+/* PWM */
+static struct resource pwm_resources[] = {
+ [0] = {
+ .start = 0xe6600000,
+ .end = 0xe66000ff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct rmob_tpu_pwm_platform_data pwm_device_data = {
+ .channels[2] = {
+ .polarity = 0,
+ .pin_gpio = GPIO_PORT202,
+ .pin_gpio_fn = GPIO_FN_TPU0TO2_PORT202,
+ }
+};
+
+static struct platform_device pwm_device = {
+ .name = "rmob_tpu_pwm",
+ .id = 0,
+ .dev = {
+ .platform_data = &pwm_device_data,
+ },
+ .num_resources = ARRAY_SIZE(pwm_resources),
+ .resource = pwm_resources,
+};
+
+/* LCDC and backlight */
+static struct platform_pwm_backlight_data pwm_backlight_data = {
+ .pwm_id = RMOB_TPU_PWM_ID(0, 2),
+ .lth_brightness = 50,
+ .max_brightness = 255,
+ .dft_brightness = 255,
+ .pwm_period_ns = 33333, /* 30kHz */
+};
+
+static struct platform_device pwm_backlight_device = {
+ .name = "pwm-backlight",
+ .dev = {
+ .platform_data = &pwm_backlight_data,
+ },
+};
+
static struct fb_videomode lcdc0_mode = {
.name = "AMPIER/AM-800480",
.xres = 800,
@@ -918,6 +962,8 @@ static struct i2c_board_info i2c2_devices[] = {
*/
static struct platform_device *eva_devices[] __initdata = {
&lcdc0_device,
+ &pwm_device,
+ &pwm_backlight_device,
&gpio_keys_device,
&sh_eth_device,
&sdhi0_device,
@@ -1027,9 +1073,6 @@ static void __init eva_init(void)
gpio_request(GPIO_PORT61, NULL); /* LCDDON */
gpio_direction_output(GPIO_PORT61, 1);
- gpio_request(GPIO_PORT202, NULL); /* LCD0_LED_CONT */
- gpio_direction_output(GPIO_PORT202, 0);
-
/* Touchscreen */
gpio_request(GPIO_FN_IRQ10, NULL); /* TP_INT */
gpio_request(GPIO_PORT166, NULL); /* TP_RST_B */
--
1.7.8.6
reply other threads:[~2012-10-26 13:38 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=1351258731-14111-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com \
--to=laurent.pinchart+renesas@ideasonboard.com \
--cc=linux-sh@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.