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 2013-05-31 12:14:01 +03:00
parent f92f168f8d
commit 922ae890a9
4 changed files with 355 additions and 0 deletions

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@ -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

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@ -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

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@ -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");

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@ -298,4 +298,28 @@ struct panel_lb035q02_platform_data {
int enable_gpio;
};
/**
* panel_sharp_ls037v7dw01 platform data
* @name: name for this display entity
* @source: name of the display entity used as a video source
* @data_lines: number of DPI datalines
* @resb_gpio: reset signal GPIO
* @ini_gpio: power on control GPIO
* @mo_gpio: selection for resolution(VGA/QVGA) GPIO
* @lr_gpio: selection for horizontal scanning direction GPIO
* @ud_gpio: selection for vertical scanning direction GPIO
*/
struct panel_sharp_ls037v7dw01_platform_data {
const char *name;
const char *source;
int data_lines;
int resb_gpio;
int ini_gpio;
int mo_gpio;
int lr_gpio;
int ud_gpio;
};
#endif /* __OMAP_PANEL_DATA_H */