Add lg lcd driver for touchpad LCD

drivers/video/msm/Makefile

@@ -127,7 +127,7 @@ obj-$(CONFIG_FB_MSM_MIPI_SIMULATOR_VIDEO) += mipi_simulator_video.o
 obj-$(CONFIG_FB_MSM_MIPI_CHIMEI_WXGA) += mipi_chimei_wxga_pt.o
 endif
 
-obj-$(CONFIG_FB_MSM_LCDC_PANEL) += lcdc_panel.o
+obj-$(CONFIG_FB_MSM_LCDC_PANEL) += lcdc_panel.o lcdc_lg_xga.o
 obj-$(CONFIG_FB_MSM_LCDC_PRISM_WVGA) += lcdc_prism.o
 obj-$(CONFIG_FB_MSM_LCDC_SAMSUNG_WSVGA) += lcdc_samsung_wsvga.o
 obj-$(CONFIG_FB_MSM_LCDC_CHIMEI_WXGA) += lcdc_chimei_wxga.o

drivers/video/msm/lcdc_lg_xga.c

@@ -0,0 +1,173 @@
+/* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <linux/delay.h>
+#include <linux/pwm.h>
+#ifdef CONFIG_PMIC8058_PWM
+#include <linux/mfd/pmic8058.h>
+#include <linux/pmic8058-pwm.h>
+#endif
+#include <mach/gpio.h>
+#include "msm_fb.h"
+
+
+
+#ifdef CONFIG_PMIC8058_PWM
+static struct pwm_device *bl_pwm0;
+
+/**
+ * TPS61187's max PWM freq allowance is 22Khz.
+ * If PWM_LEVEL is greater than 64 and If we use PMIC8058-PWM,
+ * PMIC must be in 9bit modulation mode.
+ */
+#define PWM_FREQ_HZ 20000
+#define PWM_PERIOD_USEC (USEC_PER_SEC / PWM_FREQ_HZ)
+#define PWM_LEVEL 256
+#define PWM_DUTY_LEVEL (PWM_PERIOD_USEC / PWM_LEVEL)
+#endif
+
+static struct msm_panel_common_pdata *lcdc_lg_pdata;
+
+
+static int lcdc_lg_panel_on(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int lcdc_lg_panel_off(struct platform_device *pdev)
+{
+	return 0;
+}
+
+
+static void lcdc_lg_panel_set_backlight(struct msm_fb_data_type *mfd)
+{
+	unsigned int bl_level;
+	int ret;
+
+	bl_level = mfd->bl_level;
+
+#ifdef CONFIG_PMIC8058_PWM
+	if (bl_pwm0) 
+    {
+#if 0 // green - this is noop in .35 too
+		ret = pwm_config2(bl_pwm0, bl_level, PWM_LEVEL, PWM_PERIOD_USEC);
+		if (ret)
+			printk(KERN_ERR "pwm_config on pwm 0 failed %d\n", ret);
+#endif
+        
+        ret = pwm_enable(bl_pwm0);
+		if (ret)
+			printk(KERN_ERR "pwm_enable on pwm 0 failed %d\n", ret);
+	}
+#endif
+
+}
+
+static int __devinit lcdc_lg_probe(struct platform_device *pdev)
+{
+	if (pdev->id == 0) {
+		lcdc_lg_pdata = pdev->dev.platform_data;
+		return 0;
+	}
+
+#ifdef CONFIG_PMIC8058_PWM
+    if(lcdc_lg_pdata == NULL)
+        return 0;
+    
+	bl_pwm0 = pwm_request(lcdc_lg_pdata->gpio_num[0], "backlight");
+	if (bl_pwm0 == NULL || IS_ERR(bl_pwm0)) 
+    {
+		pr_err("%s pwm_request() failed\n", __func__);
+		bl_pwm0 = NULL;
+	}
+
+	printk(KERN_INFO "Lcdc_lg_probe: bl_pwm0=%p LPG_chan0=%d ",
+			bl_pwm0, (int)lcdc_lg_pdata->gpio_num[0]
+			);
+#endif
+
+	msm_fb_add_device(pdev);
+
+	return 0;
+}
+
+static struct platform_driver this_driver = {
+	.probe  = lcdc_lg_probe,
+	.driver = {
+		.name   = "lcdc_lg_xga",
+	},
+};
+
+static struct msm_fb_panel_data lg_panel_data = {    
+ 	.on = lcdc_lg_panel_on,
+ 	.off = lcdc_lg_panel_off,   
+	.set_backlight = lcdc_lg_panel_set_backlight,
+};
+
+static struct platform_device this_device = {
+	.name   = "lcdc_lg_xga",
+	.id	= 1,
+	.dev	= {
+		.platform_data = &lg_panel_data,
+	}
+};
+
+static int __init lcdc_lg_panel_init(void)
+{
+	int ret;
+	struct msm_panel_info *pinfo;
+
+#ifdef CONFIG_FB_MSM_MDDI_AUTO_DETECT
+	if (msm_fb_detect_client("lcdc_lg_xga"))
+		return 0;
+#endif
+
+	ret = platform_driver_register(&this_driver);
+	if (ret)
+		return ret;
+
+	pinfo = &lg_panel_data.panel_info;
+	pinfo->xres = 1024;
+	pinfo->yres = 768;
+	pinfo->type = LCDC_PANEL;
+	pinfo->pdest = DISPLAY_1;
+	pinfo->wait_cycle = 0;
+	pinfo->bpp = 18;
+	pinfo->fb_num = 2;
+	pinfo->clk_rate = 96000000;
+	pinfo->bl_max = PWM_LEVEL;
+	pinfo->bl_min = 0;
+
+	pinfo->lcdc.h_back_porch = 400;
+	pinfo->lcdc.h_front_porch = 272;
+	pinfo->lcdc.h_pulse_width = 328;
+	pinfo->lcdc.v_back_porch = 6;
+	pinfo->lcdc.v_front_porch = 10;
+	pinfo->lcdc.v_pulse_width = 7;
+	pinfo->lcdc.border_clr = 0;
+	pinfo->lcdc.underflow_clr = 0xff;
+	pinfo->lcdc.hsync_skew = 0;
+
+	ret = platform_device_register(&this_device);
+	if (ret)
+		platform_driver_unregister(&this_driver);
+
+	return ret;
+}
+
+module_init(lcdc_lg_panel_init);