1 // SPDX-License-Identifier: GPL-2.0-only
3  * tdo24m - SPI-based drivers for Toppoly TDO24M series LCD panels
32 	int (*adj_mode)(struct tdo24m *lcd, int mode);
36 	int			mode;  member
44 #define CMD_NULL	(-1)
146 	CMD1(0xba, 0x01),	/* Display mode (1) */
147 	CMD1(0xbb, 0x00),	/* Display mode (2) */
148 	CMD1(0x3a, 0x60),	/* Display mode 18-bit RGB */
151 	CMD1(0xb2, 0x33),	/* Booster mode setup */
155 	CMD1(0xb6, 0x40),	/* VCOM voltage */
176 	struct spi_transfer *x = &lcd->xfer;  in tdo24m_writes()
182 		if (!lcd->color_invert && *p == CMD0(0x21))  in tdo24m_writes()
187 		data = *p << (7 - nparams);  in tdo24m_writes()
190 			lcd->buf[0] = (data >> 8) & 0xff;  in tdo24m_writes()
191 			lcd->buf[1] = data & 0xff;  in tdo24m_writes()
194 			lcd->buf[0] = (data >> 16) & 0xff;  in tdo24m_writes()
195 			lcd->buf[1] = (data >> 8) & 0xff;  in tdo24m_writes()
196 			lcd->buf[2] = data & 0xff;  in tdo24m_writes()
199 			lcd->buf[0] = (data >> 24) & 0xff;  in tdo24m_writes()
200 			lcd->buf[1] = (data >> 16) & 0xff;  in tdo24m_writes()
201 			lcd->buf[2] = (data >> 8) & 0xff;  in tdo24m_writes()
202 			lcd->buf[3] = data & 0xff;  in tdo24m_writes()
207 		x->len = nparams + 2;  in tdo24m_writes()
208 		err = spi_sync(lcd->spi_dev, &lcd->msg);  in tdo24m_writes()
216 static int tdo24m_adj_mode(struct tdo24m *lcd, int mode)  in tdo24m_adj_mode()  argument
218 	switch (mode) {  in tdo24m_adj_mode()
230 		return -EINVAL;  in tdo24m_adj_mode()
233 	lcd->mode = mode;  in tdo24m_adj_mode()
237 static int tdo35s_adj_mode(struct tdo24m *lcd, int mode)  in tdo35s_adj_mode()  argument
239 	switch (mode) {  in tdo35s_adj_mode()
251 		return -EINVAL;  in tdo35s_adj_mode()
254 	lcd->mode = mode;  in tdo35s_adj_mode()
270 	err = lcd->adj_mode(lcd, lcd->mode);  in tdo24m_power_on()
284 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))  in tdo24m_power()
286 	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))  in tdo24m_power()
290 		lcd->power = power;  in tdo24m_power()
307 	return lcd->power;  in tdo24m_get_power()
313 	int mode = MODE_QVGA;  in tdo24m_set_mode()  local
316 		mode = MODE_VGA;  in tdo24m_set_mode()
318 	if (lcd->mode == mode)  in tdo24m_set_mode()
321 	return lcd->adj_mode(lcd, mode);  in tdo24m_set_mode()
339 	pdata = dev_get_platdata(&spi->dev);  in tdo24m_probe()
341 		model = pdata->model;  in tdo24m_probe()
345 	spi->bits_per_word = 8;  in tdo24m_probe()
346 	spi->mode = SPI_MODE_3;  in tdo24m_probe()
351 	lcd = devm_kzalloc(&spi->dev, sizeof(struct tdo24m), GFP_KERNEL);  in tdo24m_probe()
353 		return -ENOMEM;  in tdo24m_probe()
355 	lcd->spi_dev = spi;  in tdo24m_probe()
356 	lcd->power = LCD_POWER_OFF;  in tdo24m_probe()
357 	lcd->mode = MODE_VGA;	/* default to VGA */  in tdo24m_probe()
359 	lcd->buf = devm_kzalloc(&spi->dev, TDO24M_SPI_BUFF_SIZE, GFP_KERNEL);  in tdo24m_probe()
360 	if (lcd->buf == NULL)  in tdo24m_probe()
361 		return -ENOMEM;  in tdo24m_probe()
363 	m = &lcd->msg;  in tdo24m_probe()
364 	x = &lcd->xfer;  in tdo24m_probe()
368 	x->cs_change = 0;  in tdo24m_probe()
369 	x->tx_buf = &lcd->buf[0];  in tdo24m_probe()
374 		lcd->color_invert = 1;  in tdo24m_probe()
375 		lcd->adj_mode = tdo24m_adj_mode;  in tdo24m_probe()
378 		lcd->adj_mode = tdo35s_adj_mode;  in tdo24m_probe()
379 		lcd->color_invert = 0;  in tdo24m_probe()
382 		dev_err(&spi->dev, "Unsupported model");  in tdo24m_probe()
383 		return -EINVAL;  in tdo24m_probe()
386 	lcd->lcd_dev = devm_lcd_device_register(&spi->dev, "tdo24m", &spi->dev,  in tdo24m_probe()
388 	if (IS_ERR(lcd->lcd_dev))  in tdo24m_probe()
389 		return PTR_ERR(lcd->lcd_dev);  in tdo24m_probe()