[U-Boot] [PATCH v5 3/5] drivers: video: Add ld9040 video driver
Piotr Wilczek
p.wilczek at samsung.com
Fri Oct 19 17:34:05 CEST 2012
Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
CC: Minkyu Kang <mk7.kang at samsung.com>
CC: Donghwa Lee <dh09.lee at samsung.com>
---
Changes in v2:
- none
Changes in v3:
- none
Changes in v4:
- removed comment and unused struct
Changes in v5:
- none
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
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 at 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 at 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_ */
--
1.7.5.4
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