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    Subject[PATCH 04/20] omapfb: Add support for the 2430SDP LCD
    Date
    From: Hunyue Yau <hyau@mvista.com>

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

    Fixed-by: Kevin Hilman <khilman@mvista.com>
    Fixed-by: Sergio Aguirre <saaguirre@ti.com>
    Fixed-by: Francisco Alecrim <francisco.alecrim@indt.org.br>
    Fixed-by: Tony Lindgren <tony@atomide.com>
    Fixed-by: David Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: Hunyue Yau <hyau@mvista.com>
    Signed-off-by: Kevin Hilman <khilman@mvista.com>
    Signed-off-by: Tony Lindgren <tony@atomide.com>
    Signed-off-by: Imre Deak <imre.deak@nokia.com>
    Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
    ---
    drivers/video/omap/Makefile | 1 +
    drivers/video/omap/lcd_2430sdp.c | 198 ++++++++++++++++++++++++++++++++++++++
    2 files changed, 199 insertions(+), 0 deletions(-)
    create mode 100644 drivers/video/omap/lcd_2430sdp.c

    diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
    index 2bf94ad..7a37b03 100644
    --- a/drivers/video/omap/Makefile
    +++ b/drivers/video/omap/Makefile
    @@ -26,6 +26,7 @@ objs-$(CONFIG_ARCH_OMAP15XX)$(CONFIG_MACH_OMAP_INNOVATOR) += lcd_inn1510.o
    objs-y$(CONFIG_MACH_OMAP_OSK) += lcd_osk.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

    omapfb-objs := $(objs-yy)
    diff --git a/drivers/video/omap/lcd_2430sdp.c b/drivers/video/omap/lcd_2430sdp.c
    new file mode 100644
    index 0000000..284cfce
    --- /dev/null
    +++ b/drivers/video/omap/lcd_2430sdp.c
    @@ -0,0 +1,198 @@
    +/*
    + * 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 <linux/delay.h>
    +#include <linux/gpio.h>
    +#include <linux/i2c/twl4030.h>
    +
    +#include <mach/mux.h>
    +#include <mach/omapfb.h>
    +#include <asm/mach-types.h>
    +
    +#define SDP2430_LCD_PANEL_BACKLIGHT_GPIO 91
    +#define SDP2430_LCD_PANEL_ENABLE_GPIO 154
    +#define SDP3430_LCD_PANEL_BACKLIGHT_GPIO 24
    +#define SDP3430_LCD_PANEL_ENABLE_GPIO 28
    +
    +static unsigned backlight_gpio;
    +static unsigned enable_gpio;
    +
    +#define LCD_PANEL_BACKLIGHT_GPIO 91
    +#define LCD_PANEL_ENABLE_GPIO 154
    +#define LCD_PIXCLOCK_MAX 5400 /* freq 5.4 MHz */
    +#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
    +#define ENABLE_VAUX2_DEDICATED 0x09
    +#define ENABLE_VAUX2_DEV_GRP 0x20
    +
    +
    +#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)
    +{
    + if (machine_is_omap_3430sdp()) {
    + enable_gpio = SDP3430_LCD_PANEL_ENABLE_GPIO;
    + backlight_gpio = SDP3430_LCD_PANEL_BACKLIGHT_GPIO;
    + } else {
    + enable_gpio = SDP2430_LCD_PANEL_ENABLE_GPIO;
    + backlight_gpio = SDP2430_LCD_PANEL_BACKLIGHT_GPIO;
    + }
    +
    + gpio_request(enable_gpio, "LCD enable"); /* LCD panel */
    + gpio_request(backlight_gpio, "LCD bl"); /* LCD backlight */
    + gpio_direction_output(enable_gpio, 0);
    + gpio_direction_output(backlight_gpio, 0);
    +
    + return 0;
    +}
    +
    +static void sdp2430_panel_cleanup(struct lcd_panel *panel)
    +{
    + gpio_free(backlight_gpio);
    + gpio_free(enable_gpio);
    +}
    +
    +static int sdp2430_panel_enable(struct lcd_panel *panel)
    +{
    + u8 ded_val, ded_reg;
    + u8 grp_val, grp_reg;
    +
    + if (machine_is_omap_3430sdp()) {
    + ded_reg = TWL4030_VAUX3_DEDICATED;
    + ded_val = ENABLE_VAUX3_DEDICATED;
    + grp_reg = TWL4030_VAUX3_DEV_GRP;
    + grp_val = ENABLE_VAUX3_DEV_GRP;
    +
    + if (omap_rev() > OMAP3430_REV_ES1_0) {
    + t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
    + TWL4030_VPLL2_DEDICATED);
    + t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
    + TWL4030_VPLL2_DEV_GRP);
    + }
    + } else {
    + ded_reg = TWL4030_VAUX2_DEDICATED;
    + ded_val = ENABLE_VAUX2_DEDICATED;
    + grp_reg = TWL4030_VAUX2_DEV_GRP;
    + grp_val = ENABLE_VAUX2_DEV_GRP;
    + }
    +
    + gpio_set_value(enable_gpio, 1);
    + gpio_set_value(backlight_gpio, 1);
    +
    + if (0 != t2_out(PM_RECEIVER, ded_val, ded_reg))
    + return -EIO;
    + if (0 != t2_out(PM_RECEIVER, grp_val, grp_reg))
    + return -EIO;
    +
    + return 0;
    +}
    +
    +static void sdp2430_panel_disable(struct lcd_panel *panel)
    +{
    + gpio_set_value(enable_gpio, 0);
    + gpio_set_value(backlight_gpio, 0);
    + if (omap_rev() > OMAP3430_REV_ES1_0) {
    + t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
    + t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
    + msleep(4);
    + }
    +}
    +
    +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 = 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);
    --
    1.6.3.2


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