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Commit 922ae890 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAPDSS: Add Sharp LS037V7DW01 panel driver 



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

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent f92f168f

drivers/video/omap2/displays-new/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -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

drivers/video/omap2/displays-new/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/video/omap2/displays-new/panel-sharp-ls037v7dw01.c

0 → 100644
+324 −0
Original line number Diff line number Diff line 
/*

 * 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");

include/video/omap-panel-data.h

+24 −0
Original line number Diff line number Diff line
@@ -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 */