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Diffstat (limited to 'arch/sh/boards/mach-kfr2r09/lcd_wqvga.c')
-rw-r--r--arch/sh/boards/mach-kfr2r09/lcd_wqvga.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
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index 000000000000..8ccb1cc8b589
--- /dev/null
+++ b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
@@ -0,0 +1,332 @@
+/*
+ * KFR2R09 LCD panel support
+ *
+ * Copyright (C) 2009 Magnus Damm
+ *
+ * Register settings based on the out-of-tree t33fb.c driver
+ * Copyright (C) 2008 Lineo Solutions, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <video/sh_mobile_lcdc.h>
+#include <mach/kfr2r09.h>
+#include <cpu/sh7724.h>
+
+/* The on-board LCD module is a Hitachi TX07D34VM0AAA. This module is made
+ * up of a 240x400 LCD hooked up to a R61517 driver IC. The driver IC is
+ * communicating with the main port of the LCDC using an 18-bit SYS interface.
+ *
+ * The device code for this LCD module is 0x01221517.
+ */
+
+static const unsigned char data_frame_if[] = {
+ 0x02, /* WEMODE: 1=cont, 0=one-shot */
+ 0x00, 0x00,
+ 0x00, /* EPF, DFM */
+ 0x02, /* RIM[1] : 1 (18bpp) */
+};
+
+static const unsigned char data_panel[] = {
+ 0x0b,
+ 0x63, /* 400 lines */
+ 0x04, 0x00, 0x00, 0x04, 0x11, 0x00, 0x00,
+};
+
+static const unsigned char data_timing[] = {
+ 0x00, 0x00, 0x13, 0x08, 0x08,
+};
+
+static const unsigned char data_timing_src[] = {
+ 0x11, 0x01, 0x00, 0x01,
+};
+
+static const unsigned char data_gamma[] = {
+ 0x01, 0x02, 0x08, 0x23, 0x03, 0x0c, 0x00, 0x06, 0x00, 0x00,
+ 0x01, 0x00, 0x0c, 0x23, 0x03, 0x08, 0x02, 0x06, 0x00, 0x00,
+};
+
+static const unsigned char data_power[] = {
+ 0x07, 0xc5, 0xdc, 0x02, 0x33, 0x0a,
+};
+
+static unsigned long read_reg(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ return so->read_data(sohandle);
+}
+
+static void write_reg(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so,
+ int i, unsigned long v)
+{
+ if (i)
+ so->write_data(sohandle, v); /* PTH4/LCDRS High [param, 17:0] */
+ else
+ so->write_index(sohandle, v); /* PTH4/LCDRS Low [cmd, 7:0] */
+}
+
+static void write_data(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so,
+ unsigned char const *data, int no_data)
+{
+ int i;
+
+ for (i = 0; i < no_data; i++)
+ write_reg(sohandle, so, 1, data[i]);
+}
+
+static unsigned long read_device_code(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ unsigned long device_code;
+
+ /* access protect OFF */
+ write_reg(sohandle, so, 0, 0xb0);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* deep standby OFF */
+ write_reg(sohandle, so, 0, 0xb1);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* device code command */
+ write_reg(sohandle, so, 0, 0xbf);
+ mdelay(50);
+
+ /* dummy read */
+ read_reg(sohandle, so);
+
+ /* read device code */
+ device_code = ((read_reg(sohandle, so) & 0xff) << 24);
+ device_code |= ((read_reg(sohandle, so) & 0xff) << 16);
+ device_code |= ((read_reg(sohandle, so) & 0xff) << 8);
+ device_code |= (read_reg(sohandle, so) & 0xff);
+
+ return device_code;
+}
+
+static void write_memory_start(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ write_reg(sohandle, so, 0, 0x2c);
+}
+
+static void clear_memory(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ int i;
+
+ /* write start */
+ write_memory_start(sohandle, so);
+
+ /* paint it black */
+ for (i = 0; i < (240 * 400); i++)
+ write_reg(sohandle, so, 1, 0x00);
+}
+
+static void display_on(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ /* access protect off */
+ write_reg(sohandle, so, 0, 0xb0);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* exit deep standby mode */
+ write_reg(sohandle, so, 0, 0xb1);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* frame memory I/F */
+ write_reg(sohandle, so, 0, 0xb3);
+ write_data(sohandle, so, data_frame_if, ARRAY_SIZE(data_frame_if));
+
+ /* display mode and frame memory write mode */
+ write_reg(sohandle, so, 0, 0xb4);
+ write_reg(sohandle, so, 1, 0x00); /* DBI, internal clock */
+
+ /* panel */
+ write_reg(sohandle, so, 0, 0xc0);
+ write_data(sohandle, so, data_panel, ARRAY_SIZE(data_panel));
+
+ /* timing (normal) */
+ write_reg(sohandle, so, 0, 0xc1);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (partial) */
+ write_reg(sohandle, so, 0, 0xc2);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (idle) */
+ write_reg(sohandle, so, 0, 0xc3);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (source/VCOM/gate driving) */
+ write_reg(sohandle, so, 0, 0xc4);
+ write_data(sohandle, so, data_timing_src, ARRAY_SIZE(data_timing_src));
+
+ /* gamma (red) */
+ write_reg(sohandle, so, 0, 0xc8);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* gamma (green) */
+ write_reg(sohandle, so, 0, 0xc9);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* gamma (blue) */
+ write_reg(sohandle, so, 0, 0xca);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* power (common) */
+ write_reg(sohandle, so, 0, 0xd0);
+ write_data(sohandle, so, data_power, ARRAY_SIZE(data_power));
+
+ /* VCOM */
+ write_reg(sohandle, so, 0, 0xd1);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x0f);
+ write_reg(sohandle, so, 1, 0x02);
+
+ /* power (normal) */
+ write_reg(sohandle, so, 0, 0xd2);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ /* power (partial) */
+ write_reg(sohandle, so, 0, 0xd3);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ /* power (idle) */
+ write_reg(sohandle, so, 0, 0xd4);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ write_reg(sohandle, so, 0, 0xd8);
+ write_reg(sohandle, so, 1, 0x77);
+ write_reg(sohandle, so, 1, 0x77);
+
+ /* TE signal */
+ write_reg(sohandle, so, 0, 0x35);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* TE signal line */
+ write_reg(sohandle, so, 0, 0x44);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* column address */
+ write_reg(sohandle, so, 0, 0x2a);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0xef);
+
+ /* page address */
+ write_reg(sohandle, so, 0, 0x2b);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x01);
+ write_reg(sohandle, so, 1, 0x8f);
+
+ /* exit sleep mode */
+ write_reg(sohandle, so, 0, 0x11);
+
+ mdelay(120);
+
+ /* clear vram */
+ clear_memory(sohandle, so);
+
+ /* display ON */
+ write_reg(sohandle, so, 0, 0x29);
+ mdelay(1);
+
+ write_memory_start(sohandle, so);
+}
+
+int kfr2r09_lcd_setup(void *board_data, void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ /* power on */
+ gpio_set_value(GPIO_PTF4, 0); /* PROTECT/ -> L */
+ gpio_set_value(GPIO_PTE4, 0); /* LCD_RST/ -> L */
+ gpio_set_value(GPIO_PTF4, 1); /* PROTECT/ -> H */
+ udelay(1100);
+ gpio_set_value(GPIO_PTE4, 1); /* LCD_RST/ -> H */
+ udelay(10);
+ gpio_set_value(GPIO_PTF4, 0); /* PROTECT/ -> L */
+ mdelay(20);
+
+ if (read_device_code(sohandle, so) != 0x01221517)
+ return -ENODEV;
+
+ pr_info("KFR2R09 WQVGA LCD Module detected.\n");
+
+ display_on(sohandle, so);
+ return 0;
+}
+
+#define CTRL_CKSW 0x10
+#define CTRL_C10 0x20
+#define CTRL_CPSW 0x80
+#define MAIN_MLED4 0x40
+#define MAIN_MSW 0x80
+
+static int kfr2r09_lcd_backlight(int on)
+{
+ struct i2c_adapter *a;
+ struct i2c_msg msg;
+ unsigned char buf[2];
+ int ret;
+
+ a = i2c_get_adapter(0);
+ if (!a)
+ return -ENODEV;
+
+ buf[0] = 0x00;
+ if (on)
+ buf[1] = CTRL_CPSW | CTRL_C10 | CTRL_CKSW;
+ else
+ buf[1] = 0;
+
+ msg.addr = 0x75;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ buf[0] = 0x01;
+ if (on)
+ buf[1] = MAIN_MSW | MAIN_MLED4 | 0x0c;
+ else
+ buf[1] = 0;
+
+ msg.addr = 0x75;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ return 0;
+}
+
+void kfr2r09_lcd_on(void *board_data)
+{
+ kfr2r09_lcd_backlight(1);
+}
+
+void kfr2r09_lcd_off(void *board_data)
+{
+ kfr2r09_lcd_backlight(0);
+}