OMAP: 2430SDP: Support LCD display as a FB device

Add glue to control the 2430SDP LCD as a frame buffer device
using the existing dispc.c driver under omapfb.

Signed-off-by: Hunyue Yau <hyau@mvista.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 25429891fcfa6e3fab48115ae6e5e4fba500cfc9..ab9b23bb30b47a5eef8d12220ce80703e5f41c6b 100644 (file)
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -117,6 +117,11 @@ static struct resource sdp2430_smc91x_resources[] = {
        },
 };
 
+static struct platform_device sdp2430_lcd_device = {
+       .name           = "sdp2430_lcd",
+       .id             = -1,
+};
+
 static struct platform_device sdp2430_smc91x_device = {
        .name           = "smc91x",
        .id             = -1,
@@ -182,6 +187,7 @@ static struct platform_device *sdp2430_devices[] __initdata = {
        &sdp2430_smc91x_device,
        &sdp2430_flash_device,
        &sdp2430_kp_device,
+       &sdp2430_lcd_device,
 };
 
 static void ads7846_dev_init(void)
@@ -210,6 +216,10 @@ static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
        .single_channel = 0,  /* 0: slave, 1: master */
 };
 
+static struct omap_lcd_config sdp2430_lcd_config __initdata = {
+       .ctrl_name      = "internal",
+};
+
 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
        [0] = {
                /*
@@ -297,6 +307,7 @@ static struct omap_uart_config sdp2430_uart_config __initdata = {
 
 static struct omap_board_config_kernel sdp2430_config[] __initdata = {
        {OMAP_TAG_UART, &sdp2430_uart_config},
+       {OMAP_TAG_LCD, &sdp2430_lcd_config},
 };
 
 #if    defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)

diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
index be2580177995aca7f3fc773a2fe56d8f5065debe..0166e0399800813c6f4cfaed3cf3bcbd78436f4a 100644 (file)
--- a/drivers/video/omap/Makefile
+++ b/drivers/video/omap/Makefile
@@ -28,6 +28,7 @@ objs-y$(CONFIG_MACH_SX1) += lcd_sx1.o
 objs-y$(CONFIG_MACH_OMAP_OSK) += lcd_osk.o
 objs-y$(CONFIG_MACH_OMAP_PERSEUS2) += lcd_p2.o
 objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o
+objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o
 
 objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o
 

diff --git a/drivers/video/omap/lcd_2430sdp.c b/drivers/video/omap/lcd_2430sdp.c
new file mode 100644 (file)
index 0000000..0c50d10
--- /dev/null
+++ b/drivers/video/omap/lcd_2430sdp.c
@@ -0,0 +1,154 @@
+/*
+ * LCD panel support for the TI 2430SDP board
+ *
+ * Copyright (C) 2007 MontaVista
+ * Author: Hunyue Yau <hyau@mvista.com>
+ *
+ * Derived from drivers/video/omap/lcd-apollon.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/omapfb.h>
+#include <asm/arch/twl4030.h>
+
+#define LCD_PANEL_BACKLIGHT_GPIO       91
+#define LCD_PANEL_ENABLE_GPIO          154
+#define H4_LCD_PIXCLOCK_MAX            185186 /* freq 5.4 MHz */
+#define PM_RECEIVER             TWL4030_MODULE_PM_RECIEVER
+#define ENABLE_VAUX2_DEDICATED  0x09
+#define ENABLE_VAUX2_DEV_GRP    0x20
+#define TWL4030_VAUX2_DEV_GRP           0x1B
+#define TWL4030_VAUX2_DEDICATED         0x1E
+#define TWL4030_MODULE_PM_RECIEVER  0x13
+
+
+
+#define t2_out(c, r, v) twl4030_i2c_write_u8(c, r, v)
+
+
+static int sdp2430_panel_init(struct lcd_panel *panel,
+                               struct omapfb_device *fbdev)
+{
+       omap_request_gpio(LCD_PANEL_ENABLE_GPIO);       /* LCD panel */
+       omap_request_gpio(LCD_PANEL_BACKLIGHT_GPIO);    /* LCD backlight */
+       omap_set_gpio_direction(LCD_PANEL_ENABLE_GPIO, 0);      /* output */
+       omap_set_gpio_direction(LCD_PANEL_BACKLIGHT_GPIO, 0);   /* output */
+
+       return 0;
+}
+
+static void sdp2430_panel_cleanup(struct lcd_panel *panel)
+{
+}
+
+static int sdp2430_panel_enable(struct lcd_panel *panel)
+{
+       omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 1);
+       omap_set_gpio_dataout(LCD_PANEL_BACKLIGHT_GPIO, 1);
+
+       if(0!= t2_out(PM_RECEIVER, ENABLE_VAUX2_DEDICATED,
+                      TWL4030_VAUX2_DEDICATED)) return -EIO;
+       if(0!= t2_out(PM_RECEIVER, ENABLE_VAUX2_DEV_GRP,
+                      TWL4030_VAUX2_DEV_GRP)) return -EIO;
+
+       return 0;
+}
+
+static void sdp2430_panel_disable(struct lcd_panel *panel)
+{
+       omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 0);
+        omap_set_gpio_dataout(LCD_PANEL_BACKLIGHT_GPIO, 0);
+}
+
+static unsigned long sdp2430_panel_get_caps(struct lcd_panel *panel)
+{
+       return 0;
+}
+
+struct lcd_panel sdp2430_panel = {
+       .name           = "sdp2430",
+       .config         = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
+                         OMAP_LCDC_INV_HSYNC,
+
+       .bpp            = 16,
+       .data_lines     = 16,
+       .x_res          = 240,
+       .y_res          = 320,
+       .hsw            = 3,            /* hsync_len (4) - 1 */
+       .hfp            = 3,            /* right_margin (4) - 1 */
+       .hbp            = 39,           /* left_margin (40) - 1 */
+       .vsw            = 1,            /* vsync_len (2) - 1 */
+       .vfp            = 2,            /* lower_margin */
+       .vbp            = 7,            /* upper_margin (8) - 1 */
+
+       .pixel_clock    = H4_LCD_PIXCLOCK_MAX,
+
+       .init           = sdp2430_panel_init,
+       .cleanup        = sdp2430_panel_cleanup,
+       .enable = sdp2430_panel_enable,
+       .disable        = sdp2430_panel_disable,
+       .get_caps       = sdp2430_panel_get_caps,
+};
+
+static int sdp2430_panel_probe(struct platform_device *pdev)
+{
+       omapfb_register_panel(&sdp2430_panel);
+       return 0;
+}
+
+static int sdp2430_panel_remove(struct platform_device *pdev)
+{
+       return 0;
+}
+
+static int sdp2430_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+       return 0;
+}
+
+static int sdp2430_panel_resume(struct platform_device *pdev)
+{
+       return 0;
+}
+
+struct platform_driver sdp2430_panel_driver = {
+       .probe          = sdp2430_panel_probe,
+       .remove         = sdp2430_panel_remove,
+       .suspend                = sdp2430_panel_suspend,
+       .resume         = sdp2430_panel_resume,
+       .driver         = {
+               .name   = "sdp2430_lcd",
+               .owner  = THIS_MODULE,
+       },
+};
+
+static int __init sdp2430_panel_drv_init(void)
+{
+       return platform_driver_register(&sdp2430_panel_driver);
+}
+
+static void __exit sdp2430_panel_drv_exit(void)
+{
+       platform_driver_unregister(&sdp2430_panel_driver);
+}
+
+module_init(sdp2430_panel_drv_init);
+module_exit(sdp2430_panel_drv_exit);