[people/ms/u-boot.git] / drivers / video / ld9040.c

/*
 * ld9040 AMOLED LCD panel driver.
 *
 * Copyright (C) 2012 Samsung Electronics
 * Donghwa Lee <dh09.lee@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <spi.h>

static const unsigned char SEQ_USER_SETTING[] = {
	0xF0, 0x5A, 0x5A
};

static const unsigned char SEQ_ELVSS_ON[] = {
	0xB1, 0x0D, 0x00, 0x16,
};

static const unsigned char SEQ_GTCON[] = {
	0xF7, 0x09, 0x00, 0x00,
};

static const unsigned char SEQ_PANEL_CONDITION[] = {
	0xF8, 0x05, 0x65, 0x96, 0x71, 0x7D, 0x19, 0x3B,
	0x0D, 0x19, 0x7E, 0x0D, 0xE2, 0x00, 0x00, 0x7E,
	0x7D, 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02,
};

static const unsigned char SEQ_GAMMA_SET1[] = {
	0xF9, 0x00, 0xA7, 0xB4, 0xAE, 0xBF, 0x00, 0x91,
	0x00, 0xB2, 0xB4, 0xAA, 0xBB, 0x00, 0xAC, 0x00,
	0xB3, 0xB1, 0xAA, 0xBC, 0x00, 0xB3,
};

static const unsigned char SEQ_GAMMA_CTRL[] = {
	0xFB, 0x02, 0x5A,
};

static const unsigned char SEQ_DISPCTL[] = {
	0xF2, 0x02, 0x08, 0x08, 0x10, 0x10,
};

static const unsigned char SEQ_MANPWR[] = {
	0xB0, 0x04,
};

static const unsigned char SEQ_PWR_CTRL[] = {
	0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88,
};

static const unsigned char SEQ_SLPOUT[] = {
	0x11,
};

static const unsigned char SEQ_DISPON[] = {
	0x29,
};

static const unsigned char SEQ_DISPOFF[] = {
	0x28,
};

static void ld9040_spi_write(const unsigned char *wbuf, unsigned int size_cmd)
{
	int i = 0;

	/*
	 * Data are transmitted in 9-bit words:
	 * the first bit is command/parameter, the other are the value.
	 * The value's LSB is shifted to MSB position, to be sent as 9th bit
	 */

	unsigned int data_out = 0, data_in = 0;
	for (i = 0; i < size_cmd; i++) {
		data_out = wbuf[i] >> 1;
		if (i != 0)
			data_out += 0x0080;
		if (wbuf[i] & 0x01)
			data_out += 0x8000;
		spi_xfer(NULL, 9, &data_out, &data_in, SPI_XFER_BEGIN);
	}
}

void ld9040_cfg_ldo(void)
{
	udelay(10);

	ld9040_spi_write(SEQ_USER_SETTING,
					ARRAY_SIZE(SEQ_USER_SETTING));
	ld9040_spi_write(SEQ_PANEL_CONDITION,
					ARRAY_SIZE(SEQ_PANEL_CONDITION));
	ld9040_spi_write(SEQ_DISPCTL, ARRAY_SIZE(SEQ_DISPCTL));
	ld9040_spi_write(SEQ_MANPWR, ARRAY_SIZE(SEQ_MANPWR));
	ld9040_spi_write(SEQ_PWR_CTRL, ARRAY_SIZE(SEQ_PWR_CTRL));
	ld9040_spi_write(SEQ_ELVSS_ON, ARRAY_SIZE(SEQ_ELVSS_ON));
	ld9040_spi_write(SEQ_GTCON, ARRAY_SIZE(SEQ_GTCON));
	ld9040_spi_write(SEQ_GAMMA_SET1, ARRAY_SIZE(SEQ_GAMMA_SET1));
	ld9040_spi_write(SEQ_GAMMA_CTRL, ARRAY_SIZE(SEQ_GAMMA_CTRL));
	ld9040_spi_write(SEQ_SLPOUT, ARRAY_SIZE(SEQ_SLPOUT));

	udelay(120);
}

void ld9040_enable_ldo(unsigned int onoff)
{
	if (onoff)
		ld9040_spi_write(SEQ_DISPON, ARRAY_SIZE(SEQ_DISPON));
	else
		ld9040_spi_write(SEQ_DISPOFF, ARRAY_SIZE(SEQ_DISPOFF));
}
Commit	Line	Data
eed29742 PW	1	/*
	2	* ld9040 AMOLED LCD panel driver.
	3	*
	4	* Copyright (C) 2012 Samsung Electronics
	5	* Donghwa Lee <dh09.lee@samsung.com>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
eed29742 PW	8	*/
	9
	10	#include <common.h>
	11	#include <spi.h>
	12
eed29742 PW	13	static const unsigned char SEQ_USER_SETTING[] = {
	14	0xF0, 0x5A, 0x5A
	15	};
	16
	17	static const unsigned char SEQ_ELVSS_ON[] = {
	18	0xB1, 0x0D, 0x00, 0x16,
	19	};
	20
eed29742 PW	21	static const unsigned char SEQ_GTCON[] = {
	22	0xF7, 0x09, 0x00, 0x00,
	23	};
	24
	25	static const unsigned char SEQ_PANEL_CONDITION[] = {
	26	0xF8, 0x05, 0x65, 0x96, 0x71, 0x7D, 0x19, 0x3B,
	27	0x0D, 0x19, 0x7E, 0x0D, 0xE2, 0x00, 0x00, 0x7E,
	28	0x7D, 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02,
	29	};
	30
	31	static const unsigned char SEQ_GAMMA_SET1[] = {
	32	0xF9, 0x00, 0xA7, 0xB4, 0xAE, 0xBF, 0x00, 0x91,
	33	0x00, 0xB2, 0xB4, 0xAA, 0xBB, 0x00, 0xAC, 0x00,
	34	0xB3, 0xB1, 0xAA, 0xBC, 0x00, 0xB3,
	35	};
	36
	37	static const unsigned char SEQ_GAMMA_CTRL[] = {
	38	0xFB, 0x02, 0x5A,
	39	};
	40
eed29742 PW	41	static const unsigned char SEQ_DISPCTL[] = {
	42	0xF2, 0x02, 0x08, 0x08, 0x10, 0x10,
	43	};
	44
	45	static const unsigned char SEQ_MANPWR[] = {
	46	0xB0, 0x04,
	47	};
	48
	49	static const unsigned char SEQ_PWR_CTRL[] = {
	50	0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88,
	51	};
	52
	53	static const unsigned char SEQ_SLPOUT[] = {
	54	0x11,
	55	};
	56
eed29742 PW	57	static const unsigned char SEQ_DISPON[] = {
	58	0x29,
	59	};
	60
	61	static const unsigned char SEQ_DISPOFF[] = {
	62	0x28,
	63	};
	64
	65	static void ld9040_spi_write(const unsigned char *wbuf, unsigned int size_cmd)
	66	{
	67	int i = 0;
	68
	69	/*
	70	* Data are transmitted in 9-bit words:
	71	* the first bit is command/parameter, the other are the value.
	72	* The value's LSB is shifted to MSB position, to be sent as 9th bit
	73	*/
	74
	75	unsigned int data_out = 0, data_in = 0;
	76	for (i = 0; i < size_cmd; i++) {
	77	data_out = wbuf[i] >> 1;
	78	if (i != 0)
	79	data_out += 0x0080;
	80	if (wbuf[i] & 0x01)
	81	data_out += 0x8000;
	82	spi_xfer(NULL, 9, &data_out, &data_in, SPI_XFER_BEGIN);
	83	}
	84	}
	85
	86	void ld9040_cfg_ldo(void)
	87	{
	88	udelay(10);
	89
	90	ld9040_spi_write(SEQ_USER_SETTING,
	91	ARRAY_SIZE(SEQ_USER_SETTING));
	92	ld9040_spi_write(SEQ_PANEL_CONDITION,
	93	ARRAY_SIZE(SEQ_PANEL_CONDITION));
	94	ld9040_spi_write(SEQ_DISPCTL, ARRAY_SIZE(SEQ_DISPCTL));
	95	ld9040_spi_write(SEQ_MANPWR, ARRAY_SIZE(SEQ_MANPWR));
	96	ld9040_spi_write(SEQ_PWR_CTRL, ARRAY_SIZE(SEQ_PWR_CTRL));
	97	ld9040_spi_write(SEQ_ELVSS_ON, ARRAY_SIZE(SEQ_ELVSS_ON));
	98	ld9040_spi_write(SEQ_GTCON, ARRAY_SIZE(SEQ_GTCON));
	99	ld9040_spi_write(SEQ_GAMMA_SET1, ARRAY_SIZE(SEQ_GAMMA_SET1));
	100	ld9040_spi_write(SEQ_GAMMA_CTRL, ARRAY_SIZE(SEQ_GAMMA_CTRL));
	101	ld9040_spi_write(SEQ_SLPOUT, ARRAY_SIZE(SEQ_SLPOUT));
	102
	103	udelay(120);
	104	}
	105
	106	void ld9040_enable_ldo(unsigned int onoff)
	107	{
	108	if (onoff)
	109	ld9040_spi_write(SEQ_DISPON, ARRAY_SIZE(SEQ_DISPON));
	110	else
	111	ld9040_spi_write(SEQ_DISPOFF, ARRAY_SIZE(SEQ_DISPOFF));
	112	}