Patchwork [U-Boot,v4,2/4] drivers: video: Add ld9040 video driver

login
register
mail settings
Submitter Piotr Wilczek
Date Sept. 28, 2012, 10:34 a.m.
Message ID <1348828478-31298-3-git-send-email-p.wilczek@samsung.com>
Download mbox | patch
Permalink /patch/187763/
State Accepted
Delegated to: Minkyu Kang
Headers show

Comments

Piotr Wilczek - Sept. 28, 2012, 10:34 a.m.
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
CC: Donghwa Lee <dh09.lee@samsung.com>
---
This patch depends on software SPI:
<1346228122-13444-2-git-send-email-p.wilczek@samsung.com>

Changes in v2:
- none
Changes in v3:
- none
Changes in v4:
- removed comment and unused struct

 drivers/video/Makefile |    1 +
 drivers/video/ld9040.c |  144 ++++++++++++++++++++++++++++++++++++++++++++++++
 include/ld9040.h       |   32 +++++++++++
 3 files changed, 177 insertions(+), 0 deletions(-)
 create mode 100644 drivers/video/ld9040.c
 create mode 100644 include/ld9040.h

Patch

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index ebb6da8..247b867 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -37,6 +37,7 @@  COBJS-$(CONFIG_EXYNOS_PWM_BL) += exynos_pwm_bl.o
 COBJS-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
 COBJS-$(CONFIG_S6E8AX0) += s6e8ax0.o
 COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
+COBJS-$(CONFIG_LD9040) += ld9040.o
 COBJS-$(CONFIG_SED156X) += sed156x.o
 COBJS-$(CONFIG_VIDEO_AMBA) += amba.o
 COBJS-$(CONFIG_VIDEO_CT69000) += ct69000.o videomodes.o
diff --git a/drivers/video/ld9040.c b/drivers/video/ld9040.c
new file mode 100644
index 0000000..c01ae12
--- /dev/null
+++ b/drivers/video/ld9040.c
@@ -0,0 +1,144 @@ 
+/*
+ * ld9040 AMOLED LCD panel driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <spi.h>
+
+static const unsigned char SEQ_SWRESET[] = {
+	0x01,
+};
+
+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_TEMP_SWIRE[] = {
+	0xB2, 0x06, 0x06, 0x06, 0x06,
+};
+
+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_APON[] = {
+	0xF3, 0x00, 0x00, 0x00, 0x0A, 0x02,
+};
+
+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_SLPIN[] = {
+	0x10,
+};
+
+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));
+}
diff --git a/include/ld9040.h b/include/ld9040.h
new file mode 100644
index 0000000..fe99390
--- /dev/null
+++ b/include/ld9040.h
@@ -0,0 +1,32 @@ 
+/*
+ * ld9040 AMOLED LCD panel driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LD9040_H_
+#define __LD9040_H_
+
+void ld9040_cfg_ldo(void);
+void ld9040_enable_ldo(unsigned int onoff);
+
+#endif /* __LD9040_H_ */