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author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-05-31 12:14:01 +0300 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-06-17 14:32:51 +0300 |
commit | 922ae890a993e8f5ca1ef776b4c8856d0aa7de25 (patch) | |
tree | 73cacdde707e3fe56bbb84c58336cdedaecfb4df | |
parent | f92f168f8dc33c8db100fdd0c4ccfb26adedce61 (diff) | |
download | linux-stable-922ae890a993e8f5ca1ef776b4c8856d0aa7de25.tar.gz linux-stable-922ae890a993e8f5ca1ef776b4c8856d0aa7de25.tar.bz2 linux-stable-922ae890a993e8f5ca1ef776b4c8856d0aa7de25.zip |
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>
-rw-r--r-- | drivers/video/omap2/displays-new/Kconfig | 6 | ||||
-rw-r--r-- | drivers/video/omap2/displays-new/Makefile | 1 | ||||
-rw-r--r-- | drivers/video/omap2/displays-new/panel-sharp-ls037v7dw01.c | 324 | ||||
-rw-r--r-- | include/video/omap-panel-data.h | 24 |
4 files changed, 355 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"); diff --git a/include/video/omap-panel-data.h b/include/video/omap-panel-data.h index baf40450aae4..5a6e1e8645d7 100644 --- a/include/video/omap-panel-data.h +++ b/include/video/omap-panel-data.h @@ -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 */ |