From: Hunyue Yau Date: Fri, 25 May 2007 22:33:08 +0000 (-0700) Subject: OMAP: 2430SDP: Support LCD display as a FB device X-Git-Tag: v2.6.22-omap1~74 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=4ed427693dd7e0d4fd00a493988cefaa17accebc;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Kevin Hilman Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c index 25429891fcf..ab9b23bb30b 100644 --- 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 be258017799..0166e039980 100644 --- 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 index 00000000000..0c50d10f966 --- /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 + * + * 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 +#include + +#include +#include +#include +#include + +#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);