[PATCH 4/4] ARM: mxs/mx23evk: add framebuffer device

[Shawn Guo]

Signed-off-by: Shawn Guo <shawn.guo at freescale.com>
---
 arch/arm/mach-mxs/Kconfig        |    1 +
 arch/arm/mach-mxs/mach-mx23evk.c |   79 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index cffd860..678b646 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -22,6 +22,7 @@ config MACH_MX23EVK
 	select SOC_IMX23
 	select MXS_HAVE_AMBA_DUART
 	select MXS_HAVE_PLATFORM_AUART
+	select MXS_HAVE_PLATFORM_MXSFB
 	default y
 	help
 	  Include support for MX23EVK platform. This includes specific
diff --git a/arch/arm/mach-mxs/mach-mx23evk.c b/arch/arm/mach-mxs/mach-mx23evk.c
index d724054..a66994f 100644
--- a/arch/arm/mach-mxs/mach-mx23evk.c
+++ b/arch/arm/mach-mxs/mach-mx23evk.c
@@ -26,6 +26,9 @@
 
 #include "devices-mx23.h"
 
+#define MX23EVK_LCD_ENABLE	MXS_GPIO_NR(1, 18)
+#define MX23EVK_BL_ENABLE	MXS_GPIO_NR(1, 28)
+
 static const iomux_cfg_t mx23evk_pads[] __initconst = {
 	/* duart */
 	MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
@@ -36,14 +39,90 @@ static const iomux_cfg_t mx23evk_pads[] __initconst = {
 	MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
 	MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
 	MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
+
+	/* mxsfb (lcdif) */
+	MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
+	MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
+	MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
+	MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
+	MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
+	MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
+	/* LCD panel enable */
+	MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
+	/* backlight control */
+	MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
+};
+
+/* mxsfb (lcdif) */
+static struct fb_videomode mx23evk_video_modes[] = {
+	{
+		.name		= "Samsung-LMS430HF02",
+		.refresh	= 60,
+		.xres		= 480,
+		.yres		= 272,
+		.pixclock	= 108096, /* picosecond (9.2 MHz) */
+		.left_margin	= 15,
+		.right_margin	= 8,
+		.upper_margin	= 12,
+		.lower_margin	= 4,
+		.hsync_len	= 1,
+		.vsync_len	= 1,
+		.sync		= FB_SYNC_DATA_ENABLE_HIGH_ACT |
+				  FB_SYNC_DOTCLK_FAILING_ACT,
+	},
+};
+
+static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
+	.mode_list	= mx23evk_video_modes,
+	.mode_count	= ARRAY_SIZE(mx23evk_video_modes),
+	.default_bpp	= 32,
+	.ld_intf_width	= STMLCDIF_24BIT,
 };
 
 static void __init mx23evk_init(void)
 {
+	int ret;
+
 	mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
 
 	mx23_add_duart();
 	mx23_add_auart0();
+
+	ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
+	if (ret)
+		pr_warn("failed to request gpio lcd-enable: %d\n", ret);
+	else
+		gpio_set_value(MX23EVK_LCD_ENABLE, 1);
+
+	ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
+	if (ret)
+		pr_warn("failed to request gpio bl-enable: %d\n", ret);
+	else
+		gpio_set_value(MX23EVK_BL_ENABLE, 1);
+
+	mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
 }
 
 static void __init mx23evk_timer_init(void)
-- 
1.7.1