3  * tdo24m - SPI-based drivers for Toppoly TDO24M series LCD panels
16 #include <linux/lcd.h>
33 	int (*adj_mode)(struct tdo24m *lcd, int mode);
175 static int tdo24m_writes(struct tdo24m *lcd, const uint32_t *array)  in tdo24m_writes()  argument
177 	struct spi_transfer *x = &lcd->xfer;  in tdo24m_writes()
183 		if (!lcd->color_invert && *p == CMD0(0x21))  in tdo24m_writes()
191 			lcd->buf[0] = (data >> 8) & 0xff;  in tdo24m_writes()
192 			lcd->buf[1] = data & 0xff;  in tdo24m_writes()
195 			lcd->buf[0] = (data >> 16) & 0xff;  in tdo24m_writes()
196 			lcd->buf[1] = (data >> 8) & 0xff;  in tdo24m_writes()
197 			lcd->buf[2] = data & 0xff;  in tdo24m_writes()
200 			lcd->buf[0] = (data >> 24) & 0xff;  in tdo24m_writes()
201 			lcd->buf[1] = (data >> 16) & 0xff;  in tdo24m_writes()
202 			lcd->buf[2] = (data >> 8) & 0xff;  in tdo24m_writes()
203 			lcd->buf[3] = data & 0xff;  in tdo24m_writes()
209 		err = spi_sync(lcd->spi_dev, &lcd->msg);  in tdo24m_writes()
217 static int tdo24m_adj_mode(struct tdo24m *lcd, int mode)  in tdo24m_adj_mode()  argument
221 		tdo24m_writes(lcd, lcd_vga_pass_through_tdo24m);  in tdo24m_adj_mode()
222 		tdo24m_writes(lcd, lcd_panel_config);  in tdo24m_adj_mode()
223 		tdo24m_writes(lcd, lcd_vga_transfer_tdo24m);  in tdo24m_adj_mode()
226 		tdo24m_writes(lcd, lcd_qvga_pass_through_tdo24m);  in tdo24m_adj_mode()
227 		tdo24m_writes(lcd, lcd_panel_config);  in tdo24m_adj_mode()
228 		tdo24m_writes(lcd, lcd_qvga_transfer);  in tdo24m_adj_mode()
234 	lcd->mode = mode;  in tdo24m_adj_mode()
238 static int tdo35s_adj_mode(struct tdo24m *lcd, int mode)  in tdo35s_adj_mode()  argument
242 		tdo24m_writes(lcd, lcd_vga_pass_through_tdo35s);  in tdo35s_adj_mode()
243 		tdo24m_writes(lcd, lcd_panel_config);  in tdo35s_adj_mode()
244 		tdo24m_writes(lcd, lcd_vga_transfer_tdo35s);  in tdo35s_adj_mode()
247 		tdo24m_writes(lcd, lcd_qvga_pass_through_tdo35s);  in tdo35s_adj_mode()
248 		tdo24m_writes(lcd, lcd_panel_config);  in tdo35s_adj_mode()
249 		tdo24m_writes(lcd, lcd_qvga_transfer);  in tdo35s_adj_mode()
255 	lcd->mode = mode;  in tdo35s_adj_mode()
259 static int tdo24m_power_on(struct tdo24m *lcd)  in tdo24m_power_on()  argument
263 	err = tdo24m_writes(lcd, lcd_panel_on);  in tdo24m_power_on()
267 	err = tdo24m_writes(lcd, lcd_panel_reset);  in tdo24m_power_on()
271 	err = lcd->adj_mode(lcd, lcd->mode);  in tdo24m_power_on()
276 static int tdo24m_power_off(struct tdo24m *lcd)  in tdo24m_power_off()  argument
278 	return tdo24m_writes(lcd, lcd_panel_off);  in tdo24m_power_off()
281 static int tdo24m_power(struct tdo24m *lcd, int power)  in tdo24m_power()  argument
285 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))  in tdo24m_power()
286 		ret = tdo24m_power_on(lcd);  in tdo24m_power()
287 	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))  in tdo24m_power()
288 		ret = tdo24m_power_off(lcd);  in tdo24m_power()
291 		lcd->power = power;  in tdo24m_power()
299 	struct tdo24m *lcd = lcd_get_data(ld);  in tdo24m_set_power()  local
301 	return tdo24m_power(lcd, power);  in tdo24m_set_power()
306 	struct tdo24m *lcd = lcd_get_data(ld);  in tdo24m_get_power()  local
308 	return lcd->power;  in tdo24m_get_power()
313 	struct tdo24m *lcd = lcd_get_data(ld);  in tdo24m_set_mode()  local
319 	if (lcd->mode == mode)  in tdo24m_set_mode()
322 	return lcd->adj_mode(lcd, mode);  in tdo24m_set_mode()
333 	struct tdo24m *lcd;  in tdo24m_probe()  local
352 	lcd = devm_kzalloc(&spi->dev, sizeof(struct tdo24m), GFP_KERNEL);  in tdo24m_probe()
353 	if (!lcd)  in tdo24m_probe()
356 	lcd->spi_dev = spi;  in tdo24m_probe()
357 	lcd->power = FB_BLANK_POWERDOWN;  in tdo24m_probe()
358 	lcd->mode = MODE_VGA;	/* default to VGA */  in tdo24m_probe()
360 	lcd->buf = devm_kzalloc(&spi->dev, TDO24M_SPI_BUFF_SIZE, GFP_KERNEL);  in tdo24m_probe()
361 	if (lcd->buf == NULL)  in tdo24m_probe()
364 	m = &lcd->msg;  in tdo24m_probe()
365 	x = &lcd->xfer;  in tdo24m_probe()
370 	x->tx_buf = &lcd->buf[0];  in tdo24m_probe()
375 		lcd->color_invert = 1;  in tdo24m_probe()
376 		lcd->adj_mode = tdo24m_adj_mode;  in tdo24m_probe()
379 		lcd->adj_mode = tdo35s_adj_mode;  in tdo24m_probe()
380 		lcd->color_invert = 0;  in tdo24m_probe()
387 	lcd->lcd_dev = devm_lcd_device_register(&spi->dev, "tdo24m", &spi->dev,  in tdo24m_probe()
388 						lcd, &tdo24m_ops);  in tdo24m_probe()
389 	if (IS_ERR(lcd->lcd_dev))  in tdo24m_probe()
390 		return PTR_ERR(lcd->lcd_dev);  in tdo24m_probe()
392 	spi_set_drvdata(spi, lcd);  in tdo24m_probe()
393 	err = tdo24m_power(lcd, FB_BLANK_UNBLANK);  in tdo24m_probe()
402 	struct tdo24m *lcd = spi_get_drvdata(spi);  in tdo24m_remove()  local
404 	tdo24m_power(lcd, FB_BLANK_POWERDOWN);  in tdo24m_remove()
410 	struct tdo24m *lcd = dev_get_drvdata(dev);  in tdo24m_suspend()  local
412 	return tdo24m_power(lcd, FB_BLANK_POWERDOWN);  in tdo24m_suspend()
417 	struct tdo24m *lcd = dev_get_drvdata(dev);  in tdo24m_resume()  local
419 	return tdo24m_power(lcd, FB_BLANK_UNBLANK);  in tdo24m_resume()
428 	struct tdo24m *lcd = spi_get_drvdata(spi);  in tdo24m_shutdown()  local
430 	tdo24m_power(lcd, FB_BLANK_POWERDOWN);  in tdo24m_shutdown()
446 MODULE_DESCRIPTION("Driver for Toppoly TDO24M LCD Panel");