From 26786111f9f291c8ab313ea31d90efdf6cfde792 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Tue, 10 Apr 2012 20:58:33 -0700
Subject: [PATCH] ARM: mach-shmobile: kzm9g: add LCDC support
AS3711 chip initalization is required for enabling LCDC backlight,
but there is no driver for this chip.
So, this patch sends its settings when boot.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
arch/arm/mach-shmobile/board-kzm9g.c | 143 +++++++++++++++++++++++++++
1 file changed, 143 insertions(+)
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index f48db233719a..145341dbebf5 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -16,12 +16,15 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/smsc911x.h>
#include <linux/usb/r8a66597.h>
+#include <linux/videodev2.h>
#include <mach/irqs.h>
#include <mach/sh73a0.h>
#include <mach/common.h>
@@ -29,6 +32,7 @@
#include <asm/hardware/gic.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
+#include <video/sh_mobile_lcdc.h>
/* SMSC 9221 */
static struct resource smsc9221_resources[] = {
@@ -88,11 +92,119 @@ static struct platform_device usb_host_device = {
.resource = usb_resources,
};
+/* LCDC */
+static struct fb_videomode kzm_lcdc_mode = {
+ .name = "WVGA Panel",
+ .xres = 800,
+ .yres = 480,
+ .left_margin = 220,
+ .right_margin = 110,
+ .hsync_len = 70,
+ .upper_margin = 20,
+ .lower_margin = 5,
+ .vsync_len = 5,
+ .sync = 0,
+};
+
+static struct sh_mobile_lcdc_info lcdc_info = {
+ .clock_source = LCDC_CLK_BUS,
+ .ch[0] = {
+ .chan = LCDC_CHAN_MAINLCD,
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .interface_type = RGB24,
+ .lcd_modes = &kzm_lcdc_mode,
+ .num_modes = 1,
+ .clock_divider = 5,
+ .flags = 0,
+ .panel_cfg = {
+ .width = 152,
+ .height = 91,
+ },
+ }
+};
+
+static struct resource lcdc_resources[] = {
+ [0] = {
+ .name = "LCDC",
+ .start = 0xfe940000,
+ .end = 0xfe943fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = intcs_evt2irq(0x580),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device lcdc_device = {
+ .name = "sh_mobile_lcdc_fb",
+ .num_resources = ARRAY_SIZE(lcdc_resources),
+ .resource = lcdc_resources,
+ .dev = {
+ .platform_data = &lcdc_info,
+ .coherent_dma_mask = ~0,
+ },
+};
+
static struct platform_device *kzm_devices[] __initdata = {
&smsc_device,
&usb_host_device,
+ &lcdc_device,
};
+/*
+ * FIXME
+ *
+ * This is quick hack for enabling LCDC backlight
+ */
+static int __init as3711_enable_lcdc_backlight(void)
+{
+ struct i2c_adapter *a = i2c_get_adapter(0);
+ struct i2c_msg msg;
+ int i, ret;
+ __u8 magic[] = {
+ 0x40, 0x2a,
+ 0x43, 0x3c,
+ 0x44, 0x3c,
+ 0x45, 0x3c,
+ 0x54, 0x03,
+ 0x51, 0x00,
+ 0x51, 0x01,
+ 0xff, 0x00, /* wait */
+ 0x43, 0xf0,
+ 0x44, 0xf0,
+ 0x45, 0xf0,
+ };
+
+ if (!machine_is_kzm9g())
+ return 0;
+
+ if (!a)
+ return 0;
+
+ msg.addr = 0x40;
+ msg.len = 2;
+ msg.flags = 0;
+
+ for (i = 0; i < ARRAY_SIZE(magic); i += 2) {
+ msg.buf = magic + i;
+
+ if (0xff == msg.buf[0]) {
+ udelay(500);
+ continue;
+ }
+
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret < 0) {
+ pr_err("i2c transfer fail\n");
+ break;
+ }
+ }
+
+ return 0;
+}
+device_initcall(as3711_enable_lcdc_backlight);
+
static void __init kzm_init(void)
{
sh73a0_pinmux_init();
@@ -110,6 +222,37 @@ static void __init kzm_init(void)
gpio_request(GPIO_PORT224, NULL); /* IRQ3 */
gpio_direction_input(GPIO_PORT224);
+ /* LCDC */
+ gpio_request(GPIO_FN_LCDD23, NULL);
+ gpio_request(GPIO_FN_LCDD22, NULL);
+ gpio_request(GPIO_FN_LCDD21, NULL);
+ gpio_request(GPIO_FN_LCDD20, NULL);
+ gpio_request(GPIO_FN_LCDD19, NULL);
+ gpio_request(GPIO_FN_LCDD18, NULL);
+ gpio_request(GPIO_FN_LCDD17, NULL);
+ gpio_request(GPIO_FN_LCDD16, NULL);
+ gpio_request(GPIO_FN_LCDD15, NULL);
+ gpio_request(GPIO_FN_LCDD14, NULL);
+ gpio_request(GPIO_FN_LCDD13, NULL);
+ gpio_request(GPIO_FN_LCDD12, NULL);
+ gpio_request(GPIO_FN_LCDD11, NULL);
+ gpio_request(GPIO_FN_LCDD10, NULL);
+ gpio_request(GPIO_FN_LCDD9, NULL);
+ gpio_request(GPIO_FN_LCDD8, NULL);
+ gpio_request(GPIO_FN_LCDD7, NULL);
+ gpio_request(GPIO_FN_LCDD6, NULL);
+ gpio_request(GPIO_FN_LCDD5, NULL);
+ gpio_request(GPIO_FN_LCDD4, NULL);
+ gpio_request(GPIO_FN_LCDD3, NULL);
+ gpio_request(GPIO_FN_LCDD2, NULL);
+ gpio_request(GPIO_FN_LCDD1, NULL);
+ gpio_request(GPIO_FN_LCDD0, NULL);
+ gpio_request(GPIO_FN_LCDDISP, NULL);
+ gpio_request(GPIO_FN_LCDDCK, NULL);
+
+ gpio_request(GPIO_PORT222, NULL);
+ gpio_direction_output(GPIO_PORT222, 1);
+
#ifdef CONFIG_CACHE_L2X0
/* Early BRESP enable, Shared attribute override enable, 64K*8way */
l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);
--
2.30.9