1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/spi/spi.h>
14 #include <linux/gpio.h>
43 	struct spi_device *spi;  member
49 	/* used for non-DT boot, to be removed */
57 static int lb035q02_write_reg(struct spi_device *spi, u8 reg, u16 val)  in lb035q02_write_reg()  argument
85 	return spi_sync(spi, &msg);  in lb035q02_write_reg()
88 static void init_lb035q02_panel(struct spi_device *spi)  in init_lb035q02_panel()  argument
91 	lb035q02_write_reg(spi, 0x01, 0x6300);  in init_lb035q02_panel()
92 	lb035q02_write_reg(spi, 0x02, 0x0200);  in init_lb035q02_panel()
93 	lb035q02_write_reg(spi, 0x03, 0x0177);  in init_lb035q02_panel()
94 	lb035q02_write_reg(spi, 0x04, 0x04c7);  in init_lb035q02_panel()
95 	lb035q02_write_reg(spi, 0x05, 0xffc0);  in init_lb035q02_panel()
96 	lb035q02_write_reg(spi, 0x06, 0xe806);  in init_lb035q02_panel()
97 	lb035q02_write_reg(spi, 0x0a, 0x4008);  in init_lb035q02_panel()
98 	lb035q02_write_reg(spi, 0x0b, 0x0000);  in init_lb035q02_panel()
99 	lb035q02_write_reg(spi, 0x0d, 0x0030);  in init_lb035q02_panel()
100 	lb035q02_write_reg(spi, 0x0e, 0x2800);  in init_lb035q02_panel()
101 	lb035q02_write_reg(spi, 0x0f, 0x0000);  in init_lb035q02_panel()
102 	lb035q02_write_reg(spi, 0x16, 0x9f80);  in init_lb035q02_panel()
103 	lb035q02_write_reg(spi, 0x17, 0x0a0f);  in init_lb035q02_panel()
104 	lb035q02_write_reg(spi, 0x1e, 0x00c1);  in init_lb035q02_panel()
105 	lb035q02_write_reg(spi, 0x30, 0x0300);  in init_lb035q02_panel()
106 	lb035q02_write_reg(spi, 0x31, 0x0007);  in init_lb035q02_panel()
107 	lb035q02_write_reg(spi, 0x32, 0x0000);  in init_lb035q02_panel()
108 	lb035q02_write_reg(spi, 0x33, 0x0000);  in init_lb035q02_panel()
109 	lb035q02_write_reg(spi, 0x34, 0x0707);  in init_lb035q02_panel()
110 	lb035q02_write_reg(spi, 0x35, 0x0004);  in init_lb035q02_panel()
111 	lb035q02_write_reg(spi, 0x36, 0x0302);  in init_lb035q02_panel()
112 	lb035q02_write_reg(spi, 0x37, 0x0202);  in init_lb035q02_panel()
113 	lb035q02_write_reg(spi, 0x3a, 0x0a0d);  in init_lb035q02_panel()
114 	lb035q02_write_reg(spi, 0x3b, 0x0806);  in init_lb035q02_panel()
120 	struct omap_dss_device *in = ddata->in;  in lb035q02_connect()
126 	r = in->ops.dpi->connect(in, dssdev);  in lb035q02_connect()
130 	init_lb035q02_panel(ddata->spi);  in lb035q02_connect()
138 	struct omap_dss_device *in = ddata->in;  in lb035q02_disconnect()
143 	in->ops.dpi->disconnect(in, dssdev);  in lb035q02_disconnect()
149 	struct omap_dss_device *in = ddata->in;  in lb035q02_enable()
153 		return -ENODEV;  in lb035q02_enable()
158 	if (ddata->data_lines)  in lb035q02_enable()
159 		in->ops.dpi->set_data_lines(in, ddata->data_lines);  in lb035q02_enable()
160 	in->ops.dpi->set_timings(in, &ddata->videomode);  in lb035q02_enable()
162 	r = in->ops.dpi->enable(in);  in lb035q02_enable()
166 	if (ddata->enable_gpio)  in lb035q02_enable()
167 		gpiod_set_value_cansleep(ddata->enable_gpio, 1);  in lb035q02_enable()
169 	if (gpio_is_valid(ddata->backlight_gpio))  in lb035q02_enable()
170 		gpio_set_value_cansleep(ddata->backlight_gpio, 1);  in lb035q02_enable()
172 	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;  in lb035q02_enable()
180 	struct omap_dss_device *in = ddata->in;  in lb035q02_disable()
185 	if (ddata->enable_gpio)  in lb035q02_disable()
186 		gpiod_set_value_cansleep(ddata->enable_gpio, 0);  in lb035q02_disable()
188 	if (gpio_is_valid(ddata->backlight_gpio))  in lb035q02_disable()
189 		gpio_set_value_cansleep(ddata->backlight_gpio, 0);  in lb035q02_disable()
191 	in->ops.dpi->disable(in);  in lb035q02_disable()
193 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;  in lb035q02_disable()
200 	struct omap_dss_device *in = ddata->in;  in lb035q02_set_timings()
202 	ddata->videomode = *timings;  in lb035q02_set_timings()
203 	dssdev->panel.timings = *timings;  in lb035q02_set_timings()
205 	in->ops.dpi->set_timings(in, timings);  in lb035q02_set_timings()
213 	*timings = ddata->videomode;  in lb035q02_get_timings()
220 	struct omap_dss_device *in = ddata->in;  in lb035q02_check_timings()
222 	return in->ops.dpi->check_timings(in, timings);  in lb035q02_check_timings()
239 static int lb035q02_probe_of(struct spi_device *spi)  in lb035q02_probe_of()  argument
241 	struct device_node *node = spi->dev.of_node;  in lb035q02_probe_of()
242 	struct panel_drv_data *ddata = spi_get_drvdata(spi);  in lb035q02_probe_of()
244 	struct gpio_desc *gpio;  in lb035q02_probe_of()  local
246 	gpio = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW);  in lb035q02_probe_of()
247 	if (IS_ERR(gpio)) {  in lb035q02_probe_of()
248 		dev_err(&spi->dev, "failed to parse enable gpio\n");  in lb035q02_probe_of()
249 		return PTR_ERR(gpio);  in lb035q02_probe_of()
252 	ddata->enable_gpio = gpio;  in lb035q02_probe_of()
254 	ddata->backlight_gpio = -ENOENT;  in lb035q02_probe_of()
258 		dev_err(&spi->dev, "failed to find video source\n");  in lb035q02_probe_of()
262 	ddata->in = in;  in lb035q02_probe_of()
267 static int lb035q02_panel_spi_probe(struct spi_device *spi)  in lb035q02_panel_spi_probe()  argument
273 	if (!spi->dev.of_node)  in lb035q02_panel_spi_probe()
274 		return -ENODEV;  in lb035q02_panel_spi_probe()
276 	ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);  in lb035q02_panel_spi_probe()
278 		return -ENOMEM;  in lb035q02_panel_spi_probe()
280 	spi_set_drvdata(spi, ddata);  in lb035q02_panel_spi_probe()
282 	ddata->spi = spi;  in lb035q02_panel_spi_probe()
284 	r = lb035q02_probe_of(spi);  in lb035q02_panel_spi_probe()
288 	if (gpio_is_valid(ddata->backlight_gpio)) {  in lb035q02_panel_spi_probe()
289 		r = devm_gpio_request_one(&spi->dev, ddata->backlight_gpio,  in lb035q02_panel_spi_probe()
295 	ddata->videomode = lb035q02_timings;  in lb035q02_panel_spi_probe()
297 	dssdev = &ddata->dssdev;  in lb035q02_panel_spi_probe()
298 	dssdev->dev = &spi->dev;  in lb035q02_panel_spi_probe()
299 	dssdev->driver = &lb035q02_ops;  in lb035q02_panel_spi_probe()
300 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;  in lb035q02_panel_spi_probe()
301 	dssdev->owner = THIS_MODULE;  in lb035q02_panel_spi_probe()
302 	dssdev->panel.timings = ddata->videomode;  in lb035q02_panel_spi_probe()
303 	dssdev->phy.dpi.data_lines = ddata->data_lines;  in lb035q02_panel_spi_probe()
307 		dev_err(&spi->dev, "Failed to register panel\n");  in lb035q02_panel_spi_probe()
315 	omap_dss_put_device(ddata->in);  in lb035q02_panel_spi_probe()
319 static int lb035q02_panel_spi_remove(struct spi_device *spi)  in lb035q02_panel_spi_remove()  argument
321 	struct panel_drv_data *ddata = spi_get_drvdata(spi);  in lb035q02_panel_spi_remove()
322 	struct omap_dss_device *dssdev = &ddata->dssdev;  in lb035q02_panel_spi_remove()
323 	struct omap_dss_device *in = ddata->in;  in lb035q02_panel_spi_remove()
354 MODULE_ALIAS("spi:lgphilips,lb035q02");