diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c deleted file mode 100644 index 1fd0d84e6e38..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c +++ /dev/null @@ -1,251 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * LG.Philips LB035Q02 LCD Panel driver - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> - * Based on a driver by: Steve Sakoman <steve@sakoman.com> - */ - -#include <linux/module.h> -#include <linux/delay.h> -#include <linux/spi/spi.h> -#include <linux/mutex.h> -#include <linux/gpio.h> -#include <linux/gpio/consumer.h> - -#include "../dss/omapdss.h" - -static const struct videomode lb035q02_vm = { - .hactive = 320, - .vactive = 240, - - .pixelclock = 6500000, - - .hsync_len = 2, - .hfront_porch = 20, - .hback_porch = 68, - - .vsync_len = 2, - .vfront_porch = 4, - .vback_porch = 18, - - .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW, -}; - -struct panel_drv_data { - struct omap_dss_device dssdev; - - struct spi_device *spi; - - struct videomode vm; - - struct gpio_desc *enable_gpio; -}; - -#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) - -static int lb035q02_write_reg(struct spi_device *spi, u8 reg, u16 val) -{ - struct spi_message msg; - struct spi_transfer index_xfer = { - .len = 3, - .cs_change = 1, - }; - struct spi_transfer value_xfer = { - .len = 3, - }; - u8 buffer[16]; - - spi_message_init(&msg); - - /* register index */ - buffer[0] = 0x70; - buffer[1] = 0x00; - buffer[2] = reg & 0x7f; - index_xfer.tx_buf = buffer; - spi_message_add_tail(&index_xfer, &msg); - - /* register value */ - buffer[4] = 0x72; - buffer[5] = val >> 8; - buffer[6] = val; - value_xfer.tx_buf = buffer + 4; - spi_message_add_tail(&value_xfer, &msg); - - return spi_sync(spi, &msg); -} - -static void init_lb035q02_panel(struct spi_device *spi) -{ - /* Init sequence from page 28 of the lb035q02 spec */ - lb035q02_write_reg(spi, 0x01, 0x6300); - lb035q02_write_reg(spi, 0x02, 0x0200); - lb035q02_write_reg(spi, 0x03, 0x0177); - lb035q02_write_reg(spi, 0x04, 0x04c7); - lb035q02_write_reg(spi, 0x05, 0xffc0); - lb035q02_write_reg(spi, 0x06, 0xe806); - lb035q02_write_reg(spi, 0x0a, 0x4008); - lb035q02_write_reg(spi, 0x0b, 0x0000); - lb035q02_write_reg(spi, 0x0d, 0x0030); - lb035q02_write_reg(spi, 0x0e, 0x2800); - lb035q02_write_reg(spi, 0x0f, 0x0000); - lb035q02_write_reg(spi, 0x16, 0x9f80); - lb035q02_write_reg(spi, 0x17, 0x0a0f); - lb035q02_write_reg(spi, 0x1e, 0x00c1); - lb035q02_write_reg(spi, 0x30, 0x0300); - lb035q02_write_reg(spi, 0x31, 0x0007); - lb035q02_write_reg(spi, 0x32, 0x0000); - lb035q02_write_reg(spi, 0x33, 0x0000); - lb035q02_write_reg(spi, 0x34, 0x0707); - lb035q02_write_reg(spi, 0x35, 0x0004); - lb035q02_write_reg(spi, 0x36, 0x0302); - lb035q02_write_reg(spi, 0x37, 0x0202); - lb035q02_write_reg(spi, 0x3a, 0x0a0d); - lb035q02_write_reg(spi, 0x3b, 0x0806); -} - -static int lb035q02_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - struct panel_drv_data *ddata = to_panel_data(dst); - - init_lb035q02_panel(ddata->spi); - - return 0; -} - -static void lb035q02_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static void lb035q02_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->enable_gpio) - gpiod_set_value_cansleep(ddata->enable_gpio, 1); -} - -static void lb035q02_disable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->enable_gpio) - gpiod_set_value_cansleep(ddata->enable_gpio, 0); -} - -static int lb035q02_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 lb035q02_ops = { - .connect = lb035q02_connect, - .disconnect = lb035q02_disconnect, - - .enable = lb035q02_enable, - .disable = lb035q02_disable, - - .get_modes = lb035q02_get_modes, -}; - -static int lb035q02_probe_of(struct spi_device *spi) -{ - struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); - struct gpio_desc *gpio; - - gpio = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(gpio)) { - dev_err(&spi->dev, "failed to parse enable gpio\n"); - return PTR_ERR(gpio); - } - - ddata->enable_gpio = gpio; - - return 0; -} - -static int lb035q02_panel_spi_probe(struct spi_device *spi) -{ - struct panel_drv_data *ddata; - struct omap_dss_device *dssdev; - int r; - - ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); - if (ddata == NULL) - return -ENOMEM; - - dev_set_drvdata(&spi->dev, ddata); - - ddata->spi = spi; - - r = lb035q02_probe_of(spi); - if (r) - return r; - - ddata->vm = lb035q02_vm; - - dssdev = &ddata->dssdev; - dssdev->dev = &spi->dev; - dssdev->ops = &lb035q02_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: - * DE is active LOW - * 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 lb035q02_panel_spi_remove(struct spi_device *spi) -{ - struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); - struct omap_dss_device *dssdev = &ddata->dssdev; - - omapdss_device_unregister(dssdev); - - lb035q02_disable(dssdev); - - return 0; -} - -static const struct of_device_id lb035q02_of_match[] = { - { .compatible = "omapdss,lgphilips,lb035q02", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, lb035q02_of_match); - -static struct spi_driver lb035q02_spi_driver = { - .probe = lb035q02_panel_spi_probe, - .remove = lb035q02_panel_spi_remove, - .driver = { - .name = "panel_lgphilips_lb035q02", - .of_match_table = lb035q02_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_spi_driver(lb035q02_spi_driver); - -MODULE_ALIAS("spi:lgphilips,lb035q02"); -MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); -MODULE_DESCRIPTION("LG.Philips LB035Q02 LCD Panel driver"); -MODULE_LICENSE("GPL"); |