* [PATCH v5 2/5] ARM: shmobile: armadillo800eva: Add backlight support
@ 2013-07-16 10:32 Laurent Pinchart
2013-07-19 4:45 ` Simon Horman
0 siblings, 1 reply; 2+ messages in thread
From: Laurent Pinchart @ 2013-07-16 10:32 UTC (permalink / raw)
To: linux-sh
The flat panel backlight on the Armadillo 800 EVA board is driven by the
TPU PWM output.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
arch/arm/mach-shmobile/board-armadillo800eva.c | 54 +++++++++++++++++++++++++-
1 file changed, 52 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c
index 4432f05..2412fca 100644
--- a/arch/arm/mach-shmobile/board-armadillo800eva.c
+++ b/arch/arm/mach-shmobile/board-armadillo800eva.c
@@ -31,6 +31,8 @@
#include <linux/gpio_keys.h>
#include <linux/regulator/driver.h>
#include <linux/pinctrl/machine.h>
+#include <linux/platform_data/pwm-renesas-tpu.h>
+#include <linux/pwm_backlight.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/gpio-regulator.h>
#include <linux/regulator/machine.h>
@@ -387,7 +389,50 @@ 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 tpu_pwm_platform_data pwm_device_data = {
+ .channels[2] = {
+ .polarity = PWM_POLARITY_INVERSED,
+ }
+};
+
+static struct platform_device pwm_device = {
+ .name = "renesas-tpu-pwm",
+ .id = -1,
+ .dev = {
+ .platform_data = &pwm_device_data,
+ },
+ .num_resources = ARRAY_SIZE(pwm_resources),
+ .resource = pwm_resources,
+};
+
+static struct pwm_lookup pwm_lookup[] = {
+ PWM_LOOKUP("renesas-tpu-pwm", 2, "pwm-backlight.0", NULL),
+};
+
+/* LCDC and backlight */
+static struct platform_pwm_backlight_data pwm_backlight_data = {
+ .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,
@@ -1023,6 +1068,8 @@ 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,
&vcc_sdhi0,
@@ -1094,6 +1141,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = {
/* ST1232 */
PIN_MAP_MUX_GROUP_DEFAULT("0-0055", "pfc-r8a7740",
"intc_irq10", "intc"),
+ /* TPU0 */
+ PIN_MAP_MUX_GROUP_DEFAULT("renesas-tpu-pwm", "pfc-r8a7740",
+ "tpu0_to2_1", "tpu0"),
/* USBHS */
PIN_MAP_MUX_GROUP_DEFAULT("renesas_usbhs", "pfc-r8a7740",
"intc_irq7_1", "intc"),
@@ -1147,13 +1197,13 @@ static void __init eva_init(void)
ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map));
+ pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
r8a7740_pinmux_init();
r8a7740_meram_workaround();
/* LCDC0 */
gpio_request_one(61, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */
- gpio_request_one(202, GPIOF_OUT_INIT_LOW, NULL); /* LCD0_LED_CONT */
/* Touchscreen */
gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */
--
1.8.1.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v5 2/5] ARM: shmobile: armadillo800eva: Add backlight support
2013-07-16 10:32 [PATCH v5 2/5] ARM: shmobile: armadillo800eva: Add backlight support Laurent Pinchart
@ 2013-07-19 4:45 ` Simon Horman
0 siblings, 0 replies; 2+ messages in thread
From: Simon Horman @ 2013-07-19 4:45 UTC (permalink / raw)
To: linux-sh
On Tue, Jul 16, 2013 at 12:32:05PM +0200, Laurent Pinchart wrote:
> The flat panel backlight on the Armadillo 800 EVA board is driven by the
> TPU PWM output.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> Tested-by: Simon Horman <horms@verge.net.au>
> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
> ---
> arch/arm/mach-shmobile/board-armadillo800eva.c | 54 +++++++++++++++++++++++++-
> 1 file changed, 52 insertions(+), 2 deletions(-)
Thanks, I have queued this up for v3.12 in the wpu-pwm branch
of the renesas tree.
^ permalink raw reply [flat|nested] 2+ messages in thread
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