ARM: mxs: apf28dev: Add LCD and backlight support

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com>
Signed-off-by: Julien Boibessot <julien.boibessot@armadeus.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

2 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/imx28-apf28dev.dts b/arch/arm/boot/dts/imx28-apf28dev.dts
index 8e765aef0a0..1643d2593bc 100644
--- a/arch/arm/boot/dts/imx28-apf28dev.dts
+++ b/arch/arm/boot/dts/imx28-apf28dev.dts
@@ -46,6 +46,26 @@
                                         fsl,voltage = <1>;
                                         fsl,pull-up = <0>;
                                 };
+
+                                lcdif_pins_apf28dev: lcdif-apf28dev@0 {
+                                        reg = <0>;
+                                        fsl,pinmux-ids = <
+                                                0x1181 /* MX28_PAD_LCD_RD_E__LCD_VSYNC */
+                                                0x1191 /* MX28_PAD_LCD_WR_RWN__LCD_HSYNC */
+                                                0x11a1 /* MX28_PAD_LCD_RS__LCD_DOTCLK */
+                                                0x11b1 /* MX28_PAD_LCD_CS__LCD_ENABLE */
+                                        >;
+                                        fsl,drive-strength = <0>;
+                                        fsl,voltage = <1>;
+                                        fsl,pull-up = <0>;
+                                };
+                        };
+
+                        lcdif@80030000 {
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&lcdif_16bit_pins_a
+                                                &lcdif_pins_apf28dev>;
+                                status = "okay";
                         };
                 };
 
@@ -110,4 +130,12 @@
                         linux,default-trigger = "heartbeat";
                 };
         };
+
+        backlight {
+                compatible = "pwm-backlight";
+
+                pwms = <&pwm 3 191000>;
+                brightness-levels = <0 4 8 16 32 64 128 255>;
+                default-brightness-level = <6>;
+        };
 };
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index 48c2eba37b8..67ef3550609 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -100,6 +100,25 @@ static struct fb_videomode apx4devkit_video_modes[] = {
         },
 };
 
+static struct fb_videomode apf28dev_video_modes[] = {
+        {
+                .name = "LW700",
+                .refresh = 60,
+                .xres = 800,
+                .yres = 480,
+                .pixclock = 30303, /* picosecond */
+                .left_margin = 96,
+                .right_margin = 96, /* at least 3 & 1 */
+                .upper_margin = 0x14,
+                .lower_margin = 0x15,
+                .hsync_len = 64,
+                .vsync_len = 4,
+                .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
+                                FB_SYNC_DATA_ENABLE_HIGH_ACT |
+                                FB_SYNC_DOTCLK_FAILING_ACT,
+        },
+};
+
 static struct mxsfb_platform_data mxsfb_pdata __initdata;
 
 /*
@@ -374,6 +393,11 @@ static void __init cfa10049_init(void)
 static void __init apf28_init(void)
 {
         enable_clk_enet_out();
+
+        mxsfb_pdata.mode_list = apf28dev_video_modes;
+        mxsfb_pdata.mode_count = ARRAY_SIZE(apf28dev_video_modes);
+        mxsfb_pdata.default_bpp = 16;
+        mxsfb_pdata.ld_intf_width = STMLCDIF_16BIT;
 }
 
 static void __init mxs_machine_init(void)