diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c')
-rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c deleted file mode 100644 index 3ab50fd1f3f2..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c +++ /dev/null @@ -1,262 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * LCD panel driver for Sharp LS037V7DW01 - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> - */ - -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/regulator/consumer.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - struct regulator *vcc; - - struct videomode vm; - - struct gpio_desc *resb_gpio; /* low = reset active min 20 us */ - struct gpio_desc *ini_gpio; /* high = power on */ - struct gpio_desc *mo_gpio; /* low = 480x640, high = 240x320 */ - struct gpio_desc *lr_gpio; /* high = conventional horizontal scanning */ - struct gpio_desc *ud_gpio; /* high = conventional vertical scanning */ -}; - -static const struct videomode sharp_ls_vm = { - .hactive = 480, - .vactive = 640, - - .pixelclock = 19200000, - - .hsync_len = 2, - .hfront_porch = 1, - .hback_porch = 28, - - .vsync_len = 1, - .vfront_porch = 1, - .vback_porch = 1, - - .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW, -}; - -#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) - -static int sharp_ls_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return 0; -} - -static void sharp_ls_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static void sharp_ls_pre_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - int r; - - if (ddata->vcc) { - r = regulator_enable(ddata->vcc); - if (r) - dev_err(dssdev->dev, "%s: failed to enable regulator\n", - __func__); - } -} - -static void sharp_ls_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - /* wait couple of vsyncs until enabling the LCD */ - msleep(50); - - if (ddata->resb_gpio) - gpiod_set_value_cansleep(ddata->resb_gpio, 1); - - if (ddata->ini_gpio) - gpiod_set_value_cansleep(ddata->ini_gpio, 1); -} - -static void sharp_ls_disable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->ini_gpio) - gpiod_set_value_cansleep(ddata->ini_gpio, 0); - - if (ddata->resb_gpio) - gpiod_set_value_cansleep(ddata->resb_gpio, 0); - - /* wait at least 5 vsyncs after disabling the LCD */ - msleep(100); -} - -static void sharp_ls_post_disable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->vcc) - regulator_disable(ddata->vcc); -} - -static int sharp_ls_get_modes(struct omap_dss_device *dssdev, - struct drm_connector *connector) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - return omapdss_display_get_modes(connector, &ddata->vm); -} - -static const struct omap_dss_device_ops sharp_ls_ops = { - .connect = sharp_ls_connect, - .disconnect = sharp_ls_disconnect, - - .pre_enable = sharp_ls_pre_enable, - .enable = sharp_ls_enable, - .disable = sharp_ls_disable, - .post_disable = sharp_ls_post_disable, - - .get_modes = sharp_ls_get_modes, -}; - -static int sharp_ls_get_gpio_of(struct device *dev, int index, int val, - const char *desc, struct gpio_desc **gpiod) -{ - struct gpio_desc *gd; - - *gpiod = NULL; - - gd = devm_gpiod_get_index(dev, desc, index, GPIOD_OUT_LOW); - if (IS_ERR(gd)) - return PTR_ERR(gd); - - *gpiod = gd; - return 0; -} - -static int sharp_ls_probe_of(struct platform_device *pdev) -{ - struct panel_drv_data *ddata = platform_get_drvdata(pdev); - int r; - - ddata->vcc = devm_regulator_get(&pdev->dev, "envdd"); - if (IS_ERR(ddata->vcc)) { - dev_err(&pdev->dev, "failed to get regulator\n"); - return PTR_ERR(ddata->vcc); - } - - /* lcd INI */ - r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio); - if (r) - return r; - - /* lcd RESB */ - r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio); - if (r) - return r; - - /* lcd MO */ - r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio); - if (r) - return r; - - /* lcd LR */ - r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio); - if (r) - return r; - - /* lcd UD */ - r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio); - if (r) - return r; - - 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); - - r = sharp_ls_probe_of(pdev); - if (r) - return r; - - ddata->vm = sharp_ls_vm; - - dssdev = &ddata->dssdev; - dssdev->dev = &pdev->dev; - dssdev->ops = &sharp_ls_ops; - dssdev->type = OMAP_DISPLAY_TYPE_DPI; - dssdev->display = true; - dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); - dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES; - - /* - * Note: According to the panel documentation: - * DATA needs to be driven on the FALLING edge - */ - dssdev->bus_flags = DRM_BUS_FLAG_DE_HIGH - | DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE - | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE; - - omapdss_display_init(dssdev); - omapdss_device_register(dssdev); - - return 0; -} - -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; - - omapdss_device_unregister(dssdev); - - if (omapdss_device_is_enabled(dssdev)) { - sharp_ls_disable(dssdev); - sharp_ls_post_disable(dssdev); - } - - return 0; -} - -static const struct of_device_id sharp_ls_of_match[] = { - { .compatible = "omapdss,sharp,ls037v7dw01", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, sharp_ls_of_match); - -static struct platform_driver sharp_ls_driver = { - .probe = sharp_ls_probe, - .remove = __exit_p(sharp_ls_remove), - .driver = { - .name = "panel-sharp-ls037v7dw01", - .of_match_table = sharp_ls_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_platform_driver(sharp_ls_driver); - -MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); -MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver"); -MODULE_LICENSE("GPL"); |