OMAPDSS: Add Sharp LS037V7DW01 panel driver

Add Sharp LS037V7DW01 panel driver which uses the new DSS device model
and DSS ops.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

3 files changed, 331 insertions, 0 deletions

diff --git a/drivers/video/omap2/displays-new/Kconfig b/drivers/video/omap2/displays-new/Kconfig
index 3dd8bf947e16..917db6e7966c 100644
--- a/drivers/video/omap2/displays-new/Kconfig
+++ b/drivers/video/omap2/displays-new/Kconfig
@@ -49,4 +49,10 @@ config DISPLAY_PANEL_LGPHILIPS_LB035Q02
         depends on SPI
         help
           LCD Panel used on the Gumstix Overo Palo35
+
+config DISPLAY_PANEL_SHARP_LS037V7DW01
+        tristate "Sharp LS037V7DW01 LCD Panel"
+        depends on BACKLIGHT_CLASS_DEVICE
+        help
+          LCD Panel used in TI's SDP3430 and EVM boards
 endmenu
diff --git a/drivers/video/omap2/displays-new/Makefile b/drivers/video/omap2/displays-new/Makefile
index a5ec42f1d87d..dde7b8ddda0b 100644
--- a/drivers/video/omap2/displays-new/Makefile
+++ b/drivers/video/omap2/displays-new/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o
 obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o
 obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
 obj-$(CONFIG_DISPLAY_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o
+obj-$(CONFIG_DISPLAY_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
diff --git a/drivers/video/omap2/displays-new/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays-new/panel-sharp-ls037v7dw01.c
new file mode 100644
index 000000000000..72a4fb5aa6b1
--- /dev/null
+++ b/drivers/video/omap2/displays-new/panel-sharp-ls037v7dw01.c
@@ -0,0 +1,324 @@
+/*
+ * LCD panel driver for Sharp LS037V7DW01
+ *
+ * Copyright (C) 2013 Texas Instruments
+ * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
+ *
+ * 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.
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-data.h>
+
+struct panel_drv_data {
+        struct omap_dss_device dssdev;
+        struct omap_dss_device *in;
+
+        int data_lines;
+
+        struct omap_video_timings videomode;
+
+        int resb_gpio;
+        int ini_gpio;
+        int mo_gpio;
+        int lr_gpio;
+        int ud_gpio;
+};
+
+static const struct omap_video_timings sharp_ls_timings = {
+        .x_res = 480,
+        .y_res = 640,
+
+        .pixel_clock    = 19200,
+
+        .hsw            = 2,
+        .hfp            = 1,
+        .hbp            = 28,
+
+        .vsw            = 1,
+        .vfp            = 1,
+        .vbp            = 1,
+
+        .vsync_level    = OMAPDSS_SIG_ACTIVE_LOW,
+        .hsync_level    = OMAPDSS_SIG_ACTIVE_LOW,
+        .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
+        .de_level       = OMAPDSS_SIG_ACTIVE_HIGH,
+        .sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
+};
+
+#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
+
+static int sharp_ls_connect(struct omap_dss_device *dssdev)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+        int r;
+
+        if (omapdss_device_is_connected(dssdev))
+                return 0;
+
+        r = in->ops.dpi->connect(in, dssdev);
+        if (r)
+                return r;
+
+        return 0;
+}
+
+static void sharp_ls_disconnect(struct omap_dss_device *dssdev)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+
+        if (!omapdss_device_is_connected(dssdev))
+                return;
+
+        in->ops.dpi->disconnect(in, dssdev);
+}
+
+static int sharp_ls_enable(struct omap_dss_device *dssdev)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+        int r;
+
+        if (!omapdss_device_is_connected(dssdev))
+                return -ENODEV;
+
+        if (omapdss_device_is_enabled(dssdev))
+                return 0;
+
+        in->ops.dpi->set_data_lines(in, ddata->data_lines);
+        in->ops.dpi->set_timings(in, &ddata->videomode);
+
+        r = in->ops.dpi->enable(in);
+        if (r)
+                return r;
+
+        /* wait couple of vsyncs until enabling the LCD */
+        msleep(50);
+
+        if (gpio_is_valid(ddata->resb_gpio))
+                gpio_set_value_cansleep(ddata->resb_gpio, 1);
+
+        if (gpio_is_valid(ddata->ini_gpio))
+                gpio_set_value_cansleep(ddata->ini_gpio, 1);
+
+        dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+        return 0;
+}
+
+static void sharp_ls_disable(struct omap_dss_device *dssdev)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+
+        if (!omapdss_device_is_enabled(dssdev))
+                return;
+
+        if (gpio_is_valid(ddata->ini_gpio))
+                gpio_set_value_cansleep(ddata->ini_gpio, 0);
+
+        if (gpio_is_valid(ddata->resb_gpio))
+                gpio_set_value_cansleep(ddata->resb_gpio, 0);
+
+        /* wait at least 5 vsyncs after disabling the LCD */
+
+        msleep(100);
+
+        in->ops.dpi->disable(in);
+
+        dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void sharp_ls_set_timings(struct omap_dss_device *dssdev,
+                struct omap_video_timings *timings)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+
+        ddata->videomode = *timings;
+        dssdev->panel.timings = *timings;
+
+        in->ops.dpi->set_timings(in, timings);
+}
+
+static void sharp_ls_get_timings(struct omap_dss_device *dssdev,
+                struct omap_video_timings *timings)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+        *timings = ddata->videomode;
+}
+
+static int sharp_ls_check_timings(struct omap_dss_device *dssdev,
+                struct omap_video_timings *timings)
+{
+        struct panel_drv_data *ddata = to_panel_data(dssdev);
+        struct omap_dss_device *in = ddata->in;
+
+        return in->ops.dpi->check_timings(in, timings);
+}
+
+static struct omap_dss_driver sharp_ls_ops = {
+        .connect        = sharp_ls_connect,
+        .disconnect     = sharp_ls_disconnect,
+
+        .enable         = sharp_ls_enable,
+        .disable        = sharp_ls_disable,
+
+        .set_timings    = sharp_ls_set_timings,
+        .get_timings    = sharp_ls_get_timings,
+        .check_timings  = sharp_ls_check_timings,
+
+        .get_resolution = omapdss_default_get_resolution,
+};
+
+static int sharp_ls_probe_pdata(struct platform_device *pdev)
+{
+        const struct panel_sharp_ls037v7dw01_platform_data *pdata;
+        struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+        struct omap_dss_device *dssdev, *in;
+
+        pdata = dev_get_platdata(&pdev->dev);
+
+        in = omap_dss_find_output(pdata->source);
+        if (in == NULL) {
+                dev_err(&pdev->dev, "failed to find video source '%s'\n",
+                                pdata->source);
+                return -EPROBE_DEFER;
+        }
+
+        ddata->in = in;
+
+        ddata->data_lines = pdata->data_lines;
+
+        dssdev = &ddata->dssdev;
+        dssdev->name = pdata->name;
+
+        ddata->resb_gpio = pdata->resb_gpio;
+        ddata->ini_gpio = pdata->ini_gpio;
+        ddata->mo_gpio = pdata->mo_gpio;
+        ddata->lr_gpio = pdata->lr_gpio;
+        ddata->ud_gpio = pdata->ud_gpio;
+
+        return 0;
+}
+
+static int sharp_ls_probe(struct platform_device *pdev)
+{
+        struct panel_drv_data *ddata;
+        struct omap_dss_device *dssdev;
+        int r;
+
+        ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+        if (ddata == NULL)
+                return -ENOMEM;
+
+        platform_set_drvdata(pdev, ddata);
+
+        if (dev_get_platdata(&pdev->dev)) {
+                r = sharp_ls_probe_pdata(pdev);
+                if (r)
+                        return r;
+        } else {
+                return -ENODEV;
+        }
+
+        if (gpio_is_valid(ddata->mo_gpio)) {
+                r = devm_gpio_request_one(&pdev->dev, ddata->mo_gpio,
+                                GPIOF_OUT_INIT_LOW, "lcd MO");
+                if (r)
+                        goto err_gpio;
+        }
+
+        if (gpio_is_valid(ddata->lr_gpio)) {
+                r = devm_gpio_request_one(&pdev->dev, ddata->lr_gpio,
+                                GPIOF_OUT_INIT_HIGH, "lcd LR");
+                if (r)
+                        goto err_gpio;
+        }
+
+        if (gpio_is_valid(ddata->ud_gpio)) {
+                r = devm_gpio_request_one(&pdev->dev, ddata->ud_gpio,
+                                GPIOF_OUT_INIT_HIGH, "lcd UD");
+                if (r)
+                        goto err_gpio;
+        }
+
+        if (gpio_is_valid(ddata->resb_gpio)) {
+                r = devm_gpio_request_one(&pdev->dev, ddata->resb_gpio,
+                                GPIOF_OUT_INIT_LOW, "lcd RESB");
+                if (r)
+                        goto err_gpio;
+        }
+
+        if (gpio_is_valid(ddata->ini_gpio)) {
+                r = devm_gpio_request_one(&pdev->dev, ddata->ini_gpio,
+                                GPIOF_OUT_INIT_LOW, "lcd INI");
+                if (r)
+                        goto err_gpio;
+        }
+
+        ddata->videomode = sharp_ls_timings;
+
+        dssdev = &ddata->dssdev;
+        dssdev->dev = &pdev->dev;
+        dssdev->driver = &sharp_ls_ops;
+        dssdev->type = OMAP_DISPLAY_TYPE_DPI;
+        dssdev->owner = THIS_MODULE;
+        dssdev->panel.timings = ddata->videomode;
+        dssdev->phy.dpi.data_lines = ddata->data_lines;
+
+        r = omapdss_register_display(dssdev);
+        if (r) {
+                dev_err(&pdev->dev, "Failed to register panel\n");
+                goto err_reg;
+        }
+
+        return 0;
+
+err_reg:
+err_gpio:
+        omap_dss_put_device(ddata->in);
+        return r;
+}
+
+static int __exit sharp_ls_remove(struct platform_device *pdev)
+{
+        struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+        struct omap_dss_device *dssdev = &ddata->dssdev;
+        struct omap_dss_device *in = ddata->in;
+
+        omapdss_unregister_display(dssdev);
+
+        sharp_ls_disable(dssdev);
+        sharp_ls_disconnect(dssdev);
+
+        omap_dss_put_device(in);
+
+        return 0;
+}
+
+static struct platform_driver sharp_ls_driver = {
+        .probe = sharp_ls_probe,
+        .remove = __exit_p(sharp_ls_remove),
+        .driver = {
+                .name = "panel-sharp-ls037v7dw01",
+                .owner = THIS_MODULE,
+        },
+};
+
+module_platform_driver(sharp_ls_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
+MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver");
+MODULE_LICENSE("GPL");