RE: [PATCH 4/6] OMAP: LDP: Port the display driver to new DSS2

Janorkar, Mayuresh
2011-05-12T14:37:07Z

[-- Attachment #1: Type: text/plain, Size: 13896 bytes --]

> -----Original Message-----
> From: Valkeinen, Tomi
> Sent: Thursday, May 12, 2011 5:18 PM
> To: Igor Grinberg
> Cc: Janorkar, Mayuresh; tony@atomide.com; linux-omap@vger.kernel.org;
> Stanley Miao
> Subject: Re: [PATCH 4/6] OMAP: LDP: Port the display driver to new DSS2
>
> On Thu, 2011-05-12 at 14:20 +0300, Igor Grinberg wrote:
>
> > Right. Do both fixes make it work?
> >
> > If it is, then Tomi,
> > will you add both fixes to the patch set with our SOBs?
> > or do you want this to be sent properly as a follow up?
>
> Yes, I can add these all to the same patch and handle it through DSS
> tree. Although due to the reluctance to make changes to arch/arm/*omap*,
> I guess we'll pass these patches in this merge window.
>
> Mayuresh, if you're able to test this and it works, can you send me the
> full diff so that I don't make any mistakes combining the code?
>
> Tomi
>

Please find the patch below.
I have also attached the same.

There are formatting problems with this patch. But this can be used as a reference.

I have verified bootup with Penguins on LDP board.

>From 1f3470d3d792721bf5aa4d060c1cf79f5a587497 Mon Sep 17 00:00:00 2001
From: Mayuresh Janorkar <mayur@ti.com>
Date: Thu, 12 May 2011 18:53:46 +0530
Subject: [PATCH] LDP Tomi patch

---
arch/arm/mach-omap2/board-ldp.c | 87 ++++++++++--
drivers/video/omap2/displays/Kconfig | 5 +
drivers/video/omap2/displays/Makefile | 1 +
drivers/video/omap2/displays/panel-ldp.c | 223 ++++++++++++++++++++++++++++++
4 files changed, 305 insertions(+), 11 deletions(-)
mode change 100644 => 100755 arch/arm/mach-omap2/board-ldp.c
create mode 100755 drivers/video/omap2/displays/panel-ldp.c

diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
old mode 100644
new mode 100755
index e2ba779..fa6327a
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -43,6 +43,7 @@

#include <asm/delay.h>
#include <plat/usb.h>
+#include <plat/display.h>

#include "board-flash.h"
#include "mux.h"
@@ -53,6 +54,11 @@
#define LDP_SMSC911X_GPIO 152
#define DEBUG_BASE 0x08000000
#define LDP_ETHR_START DEBUG_BASE
+#define LCD_PANEL_BACKLIGHT_GPIO (15 + OMAP_MAX_GPIO_LINES)
+#define LCD_PANEL_ENABLE_GPIO (7 + OMAP_MAX_GPIO_LINES)
+
+#define LCD_PANEL_RESET_GPIO 55
+#define LCD_PANEL_QVGA_GPIO 56

static struct resource ldp_smsc911x_resources[] = {
[0] = {
@@ -275,19 +281,78 @@ static inline void __init ldp_init_smsc911x(void)
gpio_direction_input(eth_gpio);
}

-static struct platform_device ldp_lcd_device = {
- .name = "ldp_lcd",
- .id = -1,
+#define SDP3430_LCD_PANEL_BACKLIGHT_GPIO 8
+#define SDP3430_LCD_PANEL_ENABLE_GPIO 5
+
+static unsigned backlight_gpio;
+static unsigned enable_gpio;
+static int lcd_enabled;
+
+static void __init sdp3430_display_init(void)
+{
+ printk(KERN_INFO "\n LDP:: sdp3430_display_init ");
+ return;
+}
+
+static int sdp3430_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+ int status;
+ return 0;
+}
+
+static void sdp3430_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+ lcd_enabled = 0;
+
+ gpio_direction_output(enable_gpio, 0);
+ gpio_direction_output(backlight_gpio, 0);
+
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+}
+
+static struct omap_dss_device sdp3430_lcd_device = {
+ .name = "lcd",
+ .driver_name = "ldp_panel",
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .phy.dpi.data_lines = 16,
+ .platform_enable = sdp3430_panel_enable_lcd,
+ .platform_disable = sdp3430_panel_disable_lcd,
};

-static struct omap_lcd_config ldp_lcd_config __initdata = {
- .ctrl_name = "internal",
+static struct omap_dss_device *sdp3430_dss_devices[] = {
+ &sdp3430_lcd_device,
};

-static struct omap_board_config_kernel ldp_config[] __initdata = {
- { OMAP_TAG_LCD, &ldp_lcd_config },
+static struct omap_dss_board_info sdp3430_dss_data = {
+ .num_devices = ARRAY_SIZE(sdp3430_dss_devices),
+ .devices = sdp3430_dss_devices,
+ .default_device = &sdp3430_lcd_device,
};

+/* VPLL2 for digital video outputs */
+static struct regulator_consumer_supply sdp3430_vpll2_supplies[] = {
+ REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
+ REGULATOR_SUPPLY("vdds_dsi", "omap_dsi1"),
+};
+
+static struct regulator_init_data sdp3430_vpll2 = {
+ .constraints = {
+ .name = "VDVI",
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .apply_uV = true,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(sdp3430_vpll2_supplies),
+ .consumer_supplies = sdp3430_vpll2_supplies,
+};
+
+
static void __init omap_ldp_init_early(void)
{
omap2_init_common_infrastructure();
@@ -358,6 +423,7 @@ static struct twl4030_platform_data ldp_twldata = {
.vaux1 = &ldp_vaux1,
.gpio = &ldp_gpio_data,
.keypad = &ldp_kp_twl4030_data,
+ .vpll2 = &sdp3430_vpll2,
};

static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
@@ -390,7 +456,6 @@ static struct omap2_hsmmc_info mmc[] __initdata = {

static struct platform_device *ldp_devices[] __initdata = {
&ldp_smsc911x_device,
- &ldp_lcd_device,
&ldp_gpio_keys_device,
};

@@ -441,10 +506,8 @@ static struct mtd_partition ldp_nand_partitions[] = {
static void __init omap_ldp_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
- omap_board_config = ldp_config;
- omap_board_config_size = ARRAY_SIZE(ldp_config);
- ldp_init_smsc911x();
omap_i2c_init();
+// sdp3430_display_init();
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
ts_gpio = 54;
ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
@@ -459,6 +522,8 @@ static void __init omap_ldp_init(void)
omap2_hsmmc_init(mmc);
/* link regulators to MMC adapters */
ldp_vmmc1_supply.dev = mmc[0].dev;
+ sdp3430_display_init();
+ omap_display_init(&sdp3430_dss_data);
}

MACHINE_START(OMAP_LDP, "OMAP LDP board")
diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 0b05593..3f4488b 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -55,4 +55,9 @@ config PANEL_ACX565AKM
select BACKLIGHT_CLASS_DEVICE
help
This is the LCD panel used on Nokia N900
+config PANEL_LDP
+ tristate "LDP PANEL"
+ help
+ This is the LCD panel used on LDP
+
endmenu
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
index d90f73c..9d7235c 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
obj-$(CONFIG_PANEL_PICODLP) += panel-picodlp.o
obj-$(CONFIG_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o
+obj-$(CONFIG_PANEL_LDP) += panel-ldp.o
diff --git a/drivers/video/omap2/displays/panel-ldp.c b/drivers/video/omap2/displays/panel-ldp.c
new file mode 100755
index 0000000..3f9bfd1
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-ldp.c
@@ -0,0 +1,223 @@
+/*
+ * Generic DPI Panels support
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/i2c/twl.h>
+#include <mach/gpio.h>
+#include <plat/mux.h>
+#include <asm/mach-types.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <plat/panel-generic-dpi.h>
+#define LCD_PANEL_BACKLIGHT_GPIO (15 + OMAP_MAX_GPIO_LINES)
+#define LCD_PANEL_ENABLE_GPIO (7 + OMAP_MAX_GPIO_LINES)
+
+#define LCD_PANEL_RESET_GPIO 55
+#define LCD_PANEL_QVGA_GPIO 56
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+#define LCD_XRES 480
+#define LCD_YRES 640
+#define LCD_PIXCLOCK_MAX 41700
+#else
+#define LCD_XRES 240
+#define LCD_YRES 320
+#define LCD_PIXCLOCK_MAX 185186
+#endif
+
+#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
+#define ENABLE_VAUX2_DEDICATED 0x09
+#define ENABLE_VAUX2_DEV_GRP 0x20
+#define ENABLE_VAUX3_DEDICATED 0x03
+#define ENABLE_VAUX3_DEV_GRP 0x20
+
+#define ENABLE_VPLL2_DEDICATED 0x05
+#define ENABLE_VPLL2_DEV_GRP 0xE0
+#define TWL4030_VPLL2_DEV_GRP 0x33
+#define TWL4030_VPLL2_DEDICATED 0x36
+
+#define t2_out(c, r, v) twl_i2c_write_u8(c, r, v)
+
+static struct omap_video_timings ldp_timings = {
+ .x_res = 480,
+ .y_res = 640,
+
+ .hsw = 3,
+ .hfp = 3,
+ .hbp = 39,
+
+ .vsw = 1,
+ .vfp = 2,
+ .vbp = 7,
+ .pixel_clock = 41700,
+};
+
+static void ldp_panel_cleanup(void)
+{
+ gpio_free(LCD_PANEL_BACKLIGHT_GPIO);
+ gpio_free(LCD_PANEL_ENABLE_GPIO);
+ gpio_free(LCD_PANEL_QVGA_GPIO);
+ gpio_free(LCD_PANEL_RESET_GPIO);
+}
+
+static int panel_ldp_probe(struct omap_dss_device *dssdev)
+{
+ dssdev->panel.timings = ldp_timings;
+ dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS;
+ dssdev->panel.acb = 0x28;
+
+ return 0;
+}
+
+static void panel_ldp_remove(struct omap_dss_device *dssdev)
+{
+ return;
+}
+
+static int panel_ldp_power_on(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+ return 0;
+ r = omapdss_dpi_display_enable(dssdev);
+ if (r)
+ goto err0;
+
+ /* wait couple of vsyncs until enabling the LCD */
+ msleep(50);
+ if (dssdev->platform_enable) {
+ r = dssdev->platform_enable(dssdev);
+ if (r)
+ goto err1;
+ }
+ return 0;
+err1:
+ omapdss_dpi_display_disable(dssdev);
+err0:
+ return r;
+}
+
+static void panel_ldp_power_off(struct omap_dss_device *dssdev)
+{
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+ return;
+
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+ /* wait at least 5 vsyncs after disabling the LCD */
+
+ msleep(100);
+
+ omapdss_dpi_display_disable(dssdev);
+}
+static int panel_ldp_enable(struct omap_dss_device *dssdev)
+{
+ gpio_request(LCD_PANEL_RESET_GPIO, "lcd reset");
+ gpio_request(LCD_PANEL_QVGA_GPIO, "lcd qvga");
+ gpio_request(LCD_PANEL_ENABLE_GPIO, "lcd panel");
+ gpio_request(LCD_PANEL_BACKLIGHT_GPIO, "lcd backlight");
+
+ gpio_direction_output(LCD_PANEL_QVGA_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_RESET_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 0);
+#else
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 1);
+#endif
+ gpio_set_value(LCD_PANEL_RESET_GPIO, 1);
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
+ TWL4030_VPLL2_DEDICATED))
+ return -EIO;
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
+ TWL4030_VPLL2_DEV_GRP))
+ return -EIO;
+
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 1);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 1);
+
+ int r = panel_ldp_power_on(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEDICATED,
+ TWL4030_VAUX3_DEDICATED))
+ return -EIO;
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEV_GRP,
+ TWL4030_VAUX3_DEV_GRP))
+ return -EIO;
+
+ return r;
+}
+
+static void panel_ldp_disable(struct omap_dss_device *dssdev)
+{
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
+ msleep(4);
+ panel_ldp_power_off(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void panel_ldp_get_resolution(struct omap_dss_device *dssdev, int *w, int *h)
+{
+ *w = ldp_timings.x_res;
+ *h = ldp_timings.y_res;
+ if (*w == 0)
+ *w = 320;
+}
+
+static struct omap_dss_driver ldp_panel = {
+ .probe = panel_ldp_probe,
+ .remove = panel_ldp_remove,
+
+ .enable = panel_ldp_enable,
+ .disable = panel_ldp_disable,
+
+ .get_resolution = panel_ldp_get_resolution,
+
+ .driver = {
+ .name = "ldp_panel",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init panel_ldp_drv_init(void)
+{
+ return omap_dss_register_driver(&ldp_panel);
+}
+
+static void __exit panel_ldp_drv_exit(void)
+{
+ omap_dss_unregister_driver(&ldp_panel);
+}
+
+module_init(panel_ldp_drv_init);
+module_exit(panel_ldp_drv_exit);
+MODULE_LICENSE("GPL");
--
1.7.1

[-- Attachment #2: 0001-LDP-Tomi-patch.patch --]
[-- Type: application/octet-stream, Size: 12355 bytes --]

From 1f3470d3d792721bf5aa4d060c1cf79f5a587497 Mon Sep 17 00:00:00 2001
From: Mayuresh Janorkar <mayur@ti.com>
Date: Thu, 12 May 2011 18:53:46 +0530
Subject: [PATCH] LDP Tomi patch

---
arch/arm/mach-omap2/board-ldp.c | 87 ++++++++++--
drivers/video/omap2/displays/Kconfig | 5 +
drivers/video/omap2/displays/Makefile | 1 +
drivers/video/omap2/displays/panel-ldp.c | 223 ++++++++++++++++++++++++++++++
4 files changed, 305 insertions(+), 11 deletions(-)
mode change 100644 => 100755 arch/arm/mach-omap2/board-ldp.c
create mode 100755 drivers/video/omap2/displays/panel-ldp.c

diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
old mode 100644
new mode 100755
index e2ba779..fa6327a
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -43,6 +43,7 @@

#include <asm/delay.h>
#include <plat/usb.h>
+#include <plat/display.h>

#include "board-flash.h"
#include "mux.h"
@@ -53,6 +54,11 @@
#define LDP_SMSC911X_GPIO 152
#define DEBUG_BASE 0x08000000
#define LDP_ETHR_START DEBUG_BASE
+#define LCD_PANEL_BACKLIGHT_GPIO (15 + OMAP_MAX_GPIO_LINES)
+#define LCD_PANEL_ENABLE_GPIO (7 + OMAP_MAX_GPIO_LINES)
+
+#define LCD_PANEL_RESET_GPIO 55
+#define LCD_PANEL_QVGA_GPIO 56

static struct resource ldp_smsc911x_resources[] = {
[0] = {
@@ -275,19 +281,78 @@ static inline void __init ldp_init_smsc911x(void)
gpio_direction_input(eth_gpio);
}

-static struct platform_device ldp_lcd_device = {
- .name = "ldp_lcd",
- .id = -1,
+#define SDP3430_LCD_PANEL_BACKLIGHT_GPIO 8
+#define SDP3430_LCD_PANEL_ENABLE_GPIO 5
+
+static unsigned backlight_gpio;
+static unsigned enable_gpio;
+static int lcd_enabled;
+
+static void __init sdp3430_display_init(void)
+{
+ printk(KERN_INFO "\n LDP:: sdp3430_display_init ");
+ return;
+}
+
+static int sdp3430_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+ int status;
+ return 0;
+}
+
+static void sdp3430_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+ lcd_enabled = 0;
+
+ gpio_direction_output(enable_gpio, 0);
+ gpio_direction_output(backlight_gpio, 0);
+
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+}
+
+static struct omap_dss_device sdp3430_lcd_device = {
+ .name = "lcd",
+ .driver_name = "ldp_panel",
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .phy.dpi.data_lines = 16,
+ .platform_enable = sdp3430_panel_enable_lcd,
+ .platform_disable = sdp3430_panel_disable_lcd,
};

-static struct omap_lcd_config ldp_lcd_config __initdata = {
- .ctrl_name = "internal",
+static struct omap_dss_device *sdp3430_dss_devices[] = {
+ &sdp3430_lcd_device,
};

-static struct omap_board_config_kernel ldp_config[] __initdata = {
- { OMAP_TAG_LCD, &ldp_lcd_config },
+static struct omap_dss_board_info sdp3430_dss_data = {
+ .num_devices = ARRAY_SIZE(sdp3430_dss_devices),
+ .devices = sdp3430_dss_devices,
+ .default_device = &sdp3430_lcd_device,
};

+/* VPLL2 for digital video outputs */
+static struct regulator_consumer_supply sdp3430_vpll2_supplies[] = {
+ REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
+ REGULATOR_SUPPLY("vdds_dsi", "omap_dsi1"),
+};
+
+static struct regulator_init_data sdp3430_vpll2 = {
+ .constraints = {
+ .name = "VDVI",
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .apply_uV = true,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(sdp3430_vpll2_supplies),
+ .consumer_supplies = sdp3430_vpll2_supplies,
+};
+
+
static void __init omap_ldp_init_early(void)
{
omap2_init_common_infrastructure();
@@ -358,6 +423,7 @@ static struct twl4030_platform_data ldp_twldata = {
.vaux1 = &ldp_vaux1,
.gpio = &ldp_gpio_data,
.keypad = &ldp_kp_twl4030_data,
+ .vpll2 = &sdp3430_vpll2,
};

static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
@@ -390,7 +456,6 @@ static struct omap2_hsmmc_info mmc[] __initdata = {

static struct platform_device *ldp_devices[] __initdata = {
&ldp_smsc911x_device,
- &ldp_lcd_device,
&ldp_gpio_keys_device,
};

@@ -441,10 +506,8 @@ static struct mtd_partition ldp_nand_partitions[] = {
static void __init omap_ldp_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
- omap_board_config = ldp_config;
- omap_board_config_size = ARRAY_SIZE(ldp_config);
- ldp_init_smsc911x();
omap_i2c_init();
+// sdp3430_display_init();
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
ts_gpio = 54;
ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
@@ -459,6 +522,8 @@ static void __init omap_ldp_init(void)
omap2_hsmmc_init(mmc);
/* link regulators to MMC adapters */
ldp_vmmc1_supply.dev = mmc[0].dev;
+ sdp3430_display_init();
+ omap_display_init(&sdp3430_dss_data);
}

MACHINE_START(OMAP_LDP, "OMAP LDP board")
diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 0b05593..3f4488b 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -55,4 +55,9 @@ config PANEL_ACX565AKM
select BACKLIGHT_CLASS_DEVICE
help
This is the LCD panel used on Nokia N900
+config PANEL_LDP
+ tristate "LDP PANEL"
+ help
+ This is the LCD panel used on LDP
+
endmenu
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
index d90f73c..9d7235c 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
obj-$(CONFIG_PANEL_PICODLP) += panel-picodlp.o
obj-$(CONFIG_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o
+obj-$(CONFIG_PANEL_LDP) += panel-ldp.o
diff --git a/drivers/video/omap2/displays/panel-ldp.c b/drivers/video/omap2/displays/panel-ldp.c
new file mode 100755
index 0000000..3f9bfd1
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-ldp.c
@@ -0,0 +1,223 @@
+/*
+ * Generic DPI Panels support
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/i2c/twl.h>
+#include <mach/gpio.h>
+#include <plat/mux.h>
+#include <asm/mach-types.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <plat/panel-generic-dpi.h>
+#define LCD_PANEL_BACKLIGHT_GPIO (15 + OMAP_MAX_GPIO_LINES)
+#define LCD_PANEL_ENABLE_GPIO (7 + OMAP_MAX_GPIO_LINES)
+
+#define LCD_PANEL_RESET_GPIO 55
+#define LCD_PANEL_QVGA_GPIO 56
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+#define LCD_XRES 480
+#define LCD_YRES 640
+#define LCD_PIXCLOCK_MAX 41700
+#else
+#define LCD_XRES 240
+#define LCD_YRES 320
+#define LCD_PIXCLOCK_MAX 185186
+#endif
+
+#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
+#define ENABLE_VAUX2_DEDICATED 0x09
+#define ENABLE_VAUX2_DEV_GRP 0x20
+#define ENABLE_VAUX3_DEDICATED 0x03
+#define ENABLE_VAUX3_DEV_GRP 0x20
+
+#define ENABLE_VPLL2_DEDICATED 0x05
+#define ENABLE_VPLL2_DEV_GRP 0xE0
+#define TWL4030_VPLL2_DEV_GRP 0x33
+#define TWL4030_VPLL2_DEDICATED 0x36
+
+#define t2_out(c, r, v) twl_i2c_write_u8(c, r, v)
+
+static struct omap_video_timings ldp_timings = {
+ .x_res = 480,
+ .y_res = 640,
+
+ .hsw = 3,
+ .hfp = 3,
+ .hbp = 39,
+
+ .vsw = 1,
+ .vfp = 2,
+ .vbp = 7,
+ .pixel_clock = 41700,
+};
+
+static void ldp_panel_cleanup(void)
+{
+ gpio_free(LCD_PANEL_BACKLIGHT_GPIO);
+ gpio_free(LCD_PANEL_ENABLE_GPIO);
+ gpio_free(LCD_PANEL_QVGA_GPIO);
+ gpio_free(LCD_PANEL_RESET_GPIO);
+}
+
+static int panel_ldp_probe(struct omap_dss_device *dssdev)
+{
+ dssdev->panel.timings = ldp_timings;
+ dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS;
+ dssdev->panel.acb = 0x28;
+
+ return 0;
+}
+
+static void panel_ldp_remove(struct omap_dss_device *dssdev)
+{
+ return;
+}
+
+static int panel_ldp_power_on(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+ return 0;
+ r = omapdss_dpi_display_enable(dssdev);
+ if (r)
+ goto err0;
+
+ /* wait couple of vsyncs until enabling the LCD */
+ msleep(50);
+ if (dssdev->platform_enable) {
+ r = dssdev->platform_enable(dssdev);
+ if (r)
+ goto err1;
+ }
+ return 0;
+err1:
+ omapdss_dpi_display_disable(dssdev);
+err0:
+ return r;
+}
+
+static void panel_ldp_power_off(struct omap_dss_device *dssdev)
+{
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+ return;
+
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+ /* wait at least 5 vsyncs after disabling the LCD */
+
+ msleep(100);
+
+ omapdss_dpi_display_disable(dssdev);
+}
+static int panel_ldp_enable(struct omap_dss_device *dssdev)
+{
+ gpio_request(LCD_PANEL_RESET_GPIO, "lcd reset");
+ gpio_request(LCD_PANEL_QVGA_GPIO, "lcd qvga");
+ gpio_request(LCD_PANEL_ENABLE_GPIO, "lcd panel");
+ gpio_request(LCD_PANEL_BACKLIGHT_GPIO, "lcd backlight");
+
+ gpio_direction_output(LCD_PANEL_QVGA_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_RESET_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 0);
+#else
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 1);
+#endif
+ gpio_set_value(LCD_PANEL_RESET_GPIO, 1);
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
+ TWL4030_VPLL2_DEDICATED))
+ return -EIO;
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
+ TWL4030_VPLL2_DEV_GRP))
+ return -EIO;
+
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 1);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 1);
+
+ int r = panel_ldp_power_on(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEDICATED,
+ TWL4030_VAUX3_DEDICATED))
+ return -EIO;
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEV_GRP,
+ TWL4030_VAUX3_DEV_GRP))
+ return -EIO;
+
+ return r;
+}
+
+static void panel_ldp_disable(struct omap_dss_device *dssdev)
+{
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
+ msleep(4);
+ panel_ldp_power_off(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void panel_ldp_get_resolution(struct omap_dss_device *dssdev, int *w, int *h)
+{
+ *w = ldp_timings.x_res;
+ *h = ldp_timings.y_res;
+ if (*w == 0)
+ *w = 320;
+}
+
+static struct omap_dss_driver ldp_panel = {
+ .probe = panel_ldp_probe,
+ .remove = panel_ldp_remove,
+
+ .enable = panel_ldp_enable,
+ .disable = panel_ldp_disable,
+
+ .get_resolution = panel_ldp_get_resolution,
+
+ .driver = {
+ .name = "ldp_panel",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init panel_ldp_drv_init(void)
+{
+ return omap_dss_register_driver(&ldp_panel);
+}
+
+static void __exit panel_ldp_drv_exit(void)
+{
+ omap_dss_unregister_driver(&ldp_panel);
+}
+
+module_init(panel_ldp_drv_init);
+module_exit(panel_ldp_drv_exit);
+MODULE_LICENSE("GPL");
--
1.7.1