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>
This commit is contained in:
Tomi Valkeinen
parent
f92f168f8d
commit
922ae890a9
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@ -49,4 +49,10 @@ config DISPLAY_PANEL_LGPHILIPS_LB035Q02
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depends on SPI
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help
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LCD Panel used on the Gumstix Overo Palo35
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config DISPLAY_PANEL_SHARP_LS037V7DW01
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tristate "Sharp LS037V7DW01 LCD Panel"
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depends on BACKLIGHT_CLASS_DEVICE
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help
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LCD Panel used in TI's SDP3430 and EVM boards
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endmenu
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@ -7,3 +7,4 @@ obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o
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obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o
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obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
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obj-$(CONFIG_DISPLAY_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o
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obj-$(CONFIG_DISPLAY_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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@ -0,0 +1,324 @@
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/*
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* LCD panel driver for Sharp LS037V7DW01
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*
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* Copyright (C) 2013 Texas Instruments
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <video/omapdss.h>
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#include <video/omap-panel-data.h>
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struct panel_drv_data {
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struct omap_dss_device dssdev;
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struct omap_dss_device *in;
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int data_lines;
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struct omap_video_timings videomode;
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int resb_gpio;
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int ini_gpio;
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int mo_gpio;
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int lr_gpio;
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int ud_gpio;
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};
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static const struct omap_video_timings sharp_ls_timings = {
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.x_res = 480,
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.y_res = 640,
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.pixel_clock = 19200,
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.hsw = 2,
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.hfp = 1,
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.hbp = 28,
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.vsw = 1,
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.vfp = 1,
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.vbp = 1,
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.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
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.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
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.de_level = OMAPDSS_SIG_ACTIVE_HIGH,
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.sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
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};
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#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
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static int sharp_ls_connect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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if (omapdss_device_is_connected(dssdev))
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return 0;
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r = in->ops.dpi->connect(in, dssdev);
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if (r)
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return r;
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return 0;
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}
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static void sharp_ls_disconnect(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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if (!omapdss_device_is_connected(dssdev))
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return;
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in->ops.dpi->disconnect(in, dssdev);
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}
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static int sharp_ls_enable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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int r;
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if (!omapdss_device_is_connected(dssdev))
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return -ENODEV;
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if (omapdss_device_is_enabled(dssdev))
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return 0;
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in->ops.dpi->set_data_lines(in, ddata->data_lines);
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in->ops.dpi->set_timings(in, &ddata->videomode);
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r = in->ops.dpi->enable(in);
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if (r)
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return r;
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/* wait couple of vsyncs until enabling the LCD */
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msleep(50);
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if (gpio_is_valid(ddata->resb_gpio))
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gpio_set_value_cansleep(ddata->resb_gpio, 1);
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if (gpio_is_valid(ddata->ini_gpio))
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gpio_set_value_cansleep(ddata->ini_gpio, 1);
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dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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return 0;
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}
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static void sharp_ls_disable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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if (!omapdss_device_is_enabled(dssdev))
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return;
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if (gpio_is_valid(ddata->ini_gpio))
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gpio_set_value_cansleep(ddata->ini_gpio, 0);
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if (gpio_is_valid(ddata->resb_gpio))
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gpio_set_value_cansleep(ddata->resb_gpio, 0);
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/* wait at least 5 vsyncs after disabling the LCD */
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msleep(100);
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in->ops.dpi->disable(in);
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dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
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}
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static void sharp_ls_set_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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ddata->videomode = *timings;
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dssdev->panel.timings = *timings;
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in->ops.dpi->set_timings(in, timings);
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}
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static void sharp_ls_get_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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*timings = ddata->videomode;
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}
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static int sharp_ls_check_timings(struct omap_dss_device *dssdev,
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struct omap_video_timings *timings)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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struct omap_dss_device *in = ddata->in;
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return in->ops.dpi->check_timings(in, timings);
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}
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static struct omap_dss_driver sharp_ls_ops = {
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.connect = sharp_ls_connect,
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.disconnect = sharp_ls_disconnect,
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.enable = sharp_ls_enable,
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.disable = sharp_ls_disable,
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.set_timings = sharp_ls_set_timings,
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.get_timings = sharp_ls_get_timings,
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.check_timings = sharp_ls_check_timings,
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.get_resolution = omapdss_default_get_resolution,
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};
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static int sharp_ls_probe_pdata(struct platform_device *pdev)
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{
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const struct panel_sharp_ls037v7dw01_platform_data *pdata;
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct omap_dss_device *dssdev, *in;
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pdata = dev_get_platdata(&pdev->dev);
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in = omap_dss_find_output(pdata->source);
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if (in == NULL) {
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dev_err(&pdev->dev, "failed to find video source '%s'\n",
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pdata->source);
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return -EPROBE_DEFER;
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}
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ddata->in = in;
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ddata->data_lines = pdata->data_lines;
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dssdev = &ddata->dssdev;
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dssdev->name = pdata->name;
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ddata->resb_gpio = pdata->resb_gpio;
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ddata->ini_gpio = pdata->ini_gpio;
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ddata->mo_gpio = pdata->mo_gpio;
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ddata->lr_gpio = pdata->lr_gpio;
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ddata->ud_gpio = pdata->ud_gpio;
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return 0;
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}
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static int sharp_ls_probe(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata;
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struct omap_dss_device *dssdev;
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int r;
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ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
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if (ddata == NULL)
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return -ENOMEM;
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platform_set_drvdata(pdev, ddata);
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if (dev_get_platdata(&pdev->dev)) {
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r = sharp_ls_probe_pdata(pdev);
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if (r)
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return r;
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} else {
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return -ENODEV;
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}
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if (gpio_is_valid(ddata->mo_gpio)) {
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r = devm_gpio_request_one(&pdev->dev, ddata->mo_gpio,
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GPIOF_OUT_INIT_LOW, "lcd MO");
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if (r)
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goto err_gpio;
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}
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if (gpio_is_valid(ddata->lr_gpio)) {
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r = devm_gpio_request_one(&pdev->dev, ddata->lr_gpio,
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GPIOF_OUT_INIT_HIGH, "lcd LR");
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if (r)
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goto err_gpio;
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}
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if (gpio_is_valid(ddata->ud_gpio)) {
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r = devm_gpio_request_one(&pdev->dev, ddata->ud_gpio,
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GPIOF_OUT_INIT_HIGH, "lcd UD");
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if (r)
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goto err_gpio;
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}
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if (gpio_is_valid(ddata->resb_gpio)) {
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r = devm_gpio_request_one(&pdev->dev, ddata->resb_gpio,
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GPIOF_OUT_INIT_LOW, "lcd RESB");
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if (r)
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goto err_gpio;
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}
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if (gpio_is_valid(ddata->ini_gpio)) {
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r = devm_gpio_request_one(&pdev->dev, ddata->ini_gpio,
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GPIOF_OUT_INIT_LOW, "lcd INI");
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if (r)
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goto err_gpio;
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}
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ddata->videomode = sharp_ls_timings;
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dssdev = &ddata->dssdev;
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dssdev->dev = &pdev->dev;
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dssdev->driver = &sharp_ls_ops;
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dssdev->type = OMAP_DISPLAY_TYPE_DPI;
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dssdev->owner = THIS_MODULE;
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dssdev->panel.timings = ddata->videomode;
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dssdev->phy.dpi.data_lines = ddata->data_lines;
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r = omapdss_register_display(dssdev);
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if (r) {
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dev_err(&pdev->dev, "Failed to register panel\n");
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goto err_reg;
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}
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return 0;
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err_reg:
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err_gpio:
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omap_dss_put_device(ddata->in);
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return r;
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}
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static int __exit sharp_ls_remove(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct omap_dss_device *dssdev = &ddata->dssdev;
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struct omap_dss_device *in = ddata->in;
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omapdss_unregister_display(dssdev);
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sharp_ls_disable(dssdev);
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sharp_ls_disconnect(dssdev);
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omap_dss_put_device(in);
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return 0;
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}
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static struct platform_driver sharp_ls_driver = {
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.probe = sharp_ls_probe,
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.remove = __exit_p(sharp_ls_remove),
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.driver = {
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.name = "panel-sharp-ls037v7dw01",
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.owner = THIS_MODULE,
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},
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};
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module_platform_driver(sharp_ls_driver);
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MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
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MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver");
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MODULE_LICENSE("GPL");
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@ -298,4 +298,28 @@ struct panel_lb035q02_platform_data {
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int enable_gpio;
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};
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/**
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* panel_sharp_ls037v7dw01 platform data
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* @name: name for this display entity
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* @source: name of the display entity used as a video source
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* @data_lines: number of DPI datalines
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* @resb_gpio: reset signal GPIO
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* @ini_gpio: power on control GPIO
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* @mo_gpio: selection for resolution(VGA/QVGA) GPIO
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* @lr_gpio: selection for horizontal scanning direction GPIO
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* @ud_gpio: selection for vertical scanning direction GPIO
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*/
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struct panel_sharp_ls037v7dw01_platform_data {
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const char *name;
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const char *source;
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int data_lines;
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int resb_gpio;
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int ini_gpio;
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int mo_gpio;
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int lr_gpio;
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int ud_gpio;
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};
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#endif /* __OMAP_PANEL_DATA_H */
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