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[Linux-fbdev-devel] [PATCH 12/12] DSS: Hacked N810 support
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From: Tomi V. <tom...@no...> - 2009-01-12 13:06:16
|
Signed-off-by: Tomi Valkeinen <tom...@no...>
---
arch/arm/mach-omap2/board-n800.c | 214 ++++++++++++++---
drivers/video/omap2/Kconfig | 10 +
drivers/video/omap2/Makefile | 3
drivers/video/omap2/ctrl-blizzard.c | 279 ++++++++++++++++++++++
drivers/video/omap2/panel-n800.c | 437 +++++++++++++++++++++++++++++++++++
5 files changed, 905 insertions(+), 38 deletions(-)
create mode 100644 drivers/video/omap2/ctrl-blizzard.c
create mode 100644 drivers/video/omap2/panel-n800.c
diff --git a/arch/arm/mach-omap2/board-n800.c b/arch/arm/mach-omap2/board-n800.c
index b38b295..ffa5aad 100644
--- a/arch/arm/mach-omap2/board-n800.c
+++ b/arch/arm/mach-omap2/board-n800.c
@@ -40,6 +40,7 @@
#include <mach/gpio-switch.h>
#include <mach/omapfb.h>
#include <mach/blizzard.h>
+#include <mach/display.h>
#include <../drivers/cbus/tahvo.h>
#include <../drivers/media/video/tcm825x.h>
@@ -156,23 +157,175 @@ static struct omap_uart_config n800_uart_config __initdata = {
#include "../../../drivers/cbus/retu.h"
-static struct omap_fbmem_config n800_fbmem0_config __initdata = {
- .size = 752 * 1024,
+static struct omap_tmp105_config n800_tmp105_config __initdata = {
+ .tmp105_irq_pin = 125,
+ .set_power = n800_tmp105_set_power,
};
-static struct omap_fbmem_config n800_fbmem1_config __initdata = {
- .size = 752 * 1024,
-};
-static struct omap_fbmem_config n800_fbmem2_config __initdata = {
- .size = 752 * 1024,
+
+
+/* DISPLAY */
+static struct {
+ struct clk *sys_ck;
+} blizzard;
+
+static int blizzard_get_clocks(void)
+{
+ blizzard.sys_ck = clk_get(0, "osc_ck");
+ if (IS_ERR(blizzard.sys_ck)) {
+ printk(KERN_ERR "can't get Blizzard clock\n");
+ return PTR_ERR(blizzard.sys_ck);
+ }
+ return 0;
+}
+
+static unsigned long blizzard_get_clock_rate(void)
+{
+ return clk_get_rate(blizzard.sys_ck);
+}
+
+static int n800_pn800_enable(struct omap_display *display)
+{
+ if (display->hw_config.panel_reset_gpio != -1) {
+ printk("enabling panel gpio\n");
+ gpio_direction_output(display->hw_config.panel_reset_gpio, 1);
+ }
+
+ return 0;
+}
+
+static void n800_pn800_disable(struct omap_display *display)
+{
+ if (display->hw_config.panel_reset_gpio != -1) {
+ printk("disabling panel gpio\n");
+ gpio_direction_output(display->hw_config.panel_reset_gpio, 0);
+ msleep(120);
+ }
+}
+
+static int n800_blizzard_enable(struct omap_display *display)
+{
+ printk("enabling bliz powers\n");
+
+ /* Vcore to 1.475V */
+ tahvo_set_clear_reg_bits(0x07, 0, 0xf);
+ msleep(10);
+
+ clk_enable(blizzard.sys_ck);
+
+ if (display->hw_config.ctrl_reset_gpio != -1)
+ gpio_direction_output(display->hw_config.ctrl_reset_gpio, 1);
+
+ printk("osc_ck %lu\n", blizzard_get_clock_rate());
+
+ return 0;
+}
+
+static void n800_blizzard_disable(struct omap_display *display)
+{
+ printk("disabling bliz powers\n");
+
+ if (display->hw_config.ctrl_reset_gpio != -1)
+ gpio_direction_output(display->hw_config.ctrl_reset_gpio, 0);
+
+ clk_disable(blizzard.sys_ck);
+
+ /* Vcore to 1.005V */
+ tahvo_set_clear_reg_bits(0x07, 0xf, 0);
+}
+
+static int n800_set_backlight_level(struct omap_display *display, int level)
+{
+ return 0;
+}
+
+static struct omap_display_data n800_dsi_display_data = {
+ .type = OMAP_DISPLAY_TYPE_DBI,
+ .name = "lcd",
+ .ctrl_name = "ctrl-blizzard",
+ .panel_name = "panel-pn800",
+ .panel_reset_gpio = -1,
+ .ctrl_reset_gpio = N800_BLIZZARD_POWERDOWN_GPIO,
+ .panel_enable = n800_pn800_enable,
+ .panel_disable = n800_pn800_disable,
+ .ctrl_enable = n800_blizzard_enable,
+ .ctrl_disable = n800_blizzard_disable,
+ .set_backlight = n800_set_backlight_level,
+ .u.rfbi = {
+ .channel = 0,
+ /* 8 for cmd mode, 16 for pixel data. ctrl-blizzard handles switching */
+ .data_lines = 8,
+ },
+ .priv = 0, // XXX used for panel datalines
+};
+static struct omap_dss_platform_data n800_dss_data = {
+ .num_displays = 1,
+ .displays = {
+ &n800_dsi_display_data,
+ },
};
-static struct omap_tmp105_config n800_tmp105_config __initdata = {
- .tmp105_irq_pin = 125,
- .set_power = n800_tmp105_set_power,
+static struct platform_device n800_dss_device = {
+ .name = "omap-dss",
+ .id = -1,
+ .dev = {
+ .platform_data = &n800_dss_data,
+ },
};
+static void __init n800_display_init(void)
+{
+ int r;
+ const struct omap_lcd_config *conf;
+
+ conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
+ if (conf != NULL) {
+ n800_dsi_display_data.panel_reset_gpio = conf->nreset_gpio;
+ n800_dsi_display_data.priv = (void*)(u32)conf->data_lines; // XXX
+ //printk("\n\nTULI %d\n\n", conf->data_lines);
+ } else {
+ printk("\n\nEI TULLU MIOTÄÄÄ\n\n");
+ }
+
+ blizzard_get_clocks();
+ clk_enable(blizzard.sys_ck); // XXX always enable
+
+ //omapfb_set_ctrl_platform_data(&n800_blizzard_data);
+ //
+ if (n800_dsi_display_data.ctrl_reset_gpio != -1) {
+ r = gpio_request(n800_dsi_display_data.ctrl_reset_gpio,
+ "Blizzard pd");
+ if (r < 0) {
+ n800_dsi_display_data.ctrl_reset_gpio = -1;
+ printk(KERN_ERR "Unable to get Blizzard GPIO\n");
+ } else {
+ gpio_direction_output(n800_dsi_display_data.ctrl_reset_gpio,
+ 1);
+ // XXX always enable
+ }
+ }
+
+ if (n800_dsi_display_data.panel_reset_gpio != -1) {
+ r = gpio_request(n800_dsi_display_data.panel_reset_gpio,
+ "panel reset");
+ if (r < 0) {
+ n800_dsi_display_data.panel_reset_gpio = -1;
+ printk(KERN_ERR "Unable to get pn800 GPIO\n");
+ } else {
+ gpio_direction_output(n800_dsi_display_data.panel_reset_gpio,
+ 1);
+ // XXX always enable
+ }
+ }
+}
+
+/* DISPLAY END */
+
+
+
+
+
static void mipid_shutdown(struct mipid_platform_data *pdata)
{
if (pdata->nreset_gpio != -1) {
@@ -186,6 +339,7 @@ static struct mipid_platform_data n800_mipid_platform_data = {
.shutdown = mipid_shutdown,
};
+#if 0
static void __init mipid_dev_init(void)
{
const struct omap_lcd_config *conf;
@@ -196,26 +350,9 @@ static void __init mipid_dev_init(void)
n800_mipid_platform_data.data_lines = conf->data_lines;
}
}
+#endif
-static struct {
- struct clk *sys_ck;
-} blizzard;
-
-static int blizzard_get_clocks(void)
-{
- blizzard.sys_ck = clk_get(0, "osc_ck");
- if (IS_ERR(blizzard.sys_ck)) {
- printk(KERN_ERR "can't get Blizzard clock\n");
- return PTR_ERR(blizzard.sys_ck);
- }
- return 0;
-}
-
-static unsigned long blizzard_get_clock_rate(struct device *dev)
-{
- return clk_get_rate(blizzard.sys_ck);
-}
-
+#if 0
static void blizzard_enable_clocks(int enable)
{
if (enable)
@@ -260,14 +397,12 @@ static void __init blizzard_dev_init(void)
gpio_direction_output(N800_BLIZZARD_POWERDOWN_GPIO, 1);
blizzard_get_clocks();
- omapfb_set_ctrl_platform_data(&n800_blizzard_data);
+ //omapfb_set_ctrl_platform_data(&n800_blizzard_data);
}
+#endif
static struct omap_board_config_kernel n800_config[] __initdata = {
{ OMAP_TAG_UART, &n800_uart_config },
- { OMAP_TAG_FBMEM, &n800_fbmem0_config },
- { OMAP_TAG_FBMEM, &n800_fbmem1_config },
- { OMAP_TAG_FBMEM, &n800_fbmem2_config },
{ OMAP_TAG_TMP105, &n800_tmp105_config },
};
@@ -374,7 +509,7 @@ static struct omap2_mcspi_device_config tsc2005_mcspi_config = {
static struct spi_board_info n800_spi_board_info[] __initdata = {
{
- .modalias = "lcd_mipid",
+ .modalias = "panel-n800",
.bus_num = 1,
.chip_select = 1,
.max_speed_hz = 4000000,
@@ -399,7 +534,7 @@ static struct spi_board_info n800_spi_board_info[] __initdata = {
static struct spi_board_info n810_spi_board_info[] __initdata = {
{
- .modalias = "lcd_mipid",
+ .modalias = "panel-n800",
.bus_num = 1,
.chip_select = 1,
.max_speed_hz = 4000000,
@@ -567,6 +702,7 @@ static struct platform_device *n800_devices[] __initdata = {
#if defined(CONFIG_CBUS_RETU) && defined(CONFIG_LEDS_OMAP_PWM)
&n800_keypad_led_device,
#endif
+ &n800_dss_device,
};
#ifdef CONFIG_MENELAUS
@@ -689,9 +825,10 @@ void __init nokia_n800_common_init(void)
if (machine_is_nokia_n810())
i2c_register_board_info(2, n810_i2c_board_info_2,
ARRAY_SIZE(n810_i2c_board_info_2));
-
- mipid_dev_init();
- blizzard_dev_init();
+
+ //mipid_dev_init();
+ //blizzard_dev_init();
+ n800_display_init();
}
static void __init nokia_n800_init(void)
@@ -712,6 +849,7 @@ void __init nokia_n800_map_io(void)
omap_board_config_size = ARRAY_SIZE(n800_config);
omap2_set_globals_242x();
+ omap2_set_sdram_vram(800 * 480 * 2 * 3, 0);
omap2_map_common_io();
}
diff --git a/drivers/video/omap2/Kconfig b/drivers/video/omap2/Kconfig
index b54c955..4e9211e 100644
--- a/drivers/video/omap2/Kconfig
+++ b/drivers/video/omap2/Kconfig
@@ -49,4 +49,14 @@ config PANEL_SHARP_LS037V7DW01
help
LCD Panel used in TI's SDP3430 and EVM boards
+config PANEL_N800
+ tristate "panel n800"
+ help
+ N800 LCD
+
+config CTRL_BLIZZARD
+ tristate "blizzard ctrl"
+ help
+ Blizzard Ctrl
+
endmenu
diff --git a/drivers/video/omap2/Makefile b/drivers/video/omap2/Makefile
index fe6858e..7727f9c 100644
--- a/drivers/video/omap2/Makefile
+++ b/drivers/video/omap2/Makefile
@@ -3,3 +3,6 @@ omapfb-y := omapfb-main.o omapfb-sysfs.o omapfb-ioctl.o
obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
+
+obj-$(CONFIG_CTRL_BLIZZARD) += ctrl-blizzard.o
+obj-$(CONFIG_PANEL_N800) += panel-n800.o
diff --git a/drivers/video/omap2/ctrl-blizzard.c b/drivers/video/omap2/ctrl-blizzard.c
new file mode 100644
index 0000000..e1e5569
--- /dev/null
+++ b/drivers/video/omap2/ctrl-blizzard.c
@@ -0,0 +1,279 @@
+
+//#define DEBUG
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+
+#include <mach/display.h>
+#include <mach/dma.h>
+
+#ifdef DEBUG
+#define DBG(format, ...) printk(KERN_DEBUG "Blizzard: " format, ## __VA_ARGS__)
+#else
+#define DBG(format, ...)
+#endif
+
+#define BLIZZARD_REV_CODE 0x00
+#define BLIZZARD_CONFIG 0x02
+#define BLIZZARD_PLL_DIV 0x04
+#define BLIZZARD_PLL_LOCK_RANGE 0x06
+#define BLIZZARD_PLL_CLOCK_SYNTH_0 0x08
+#define BLIZZARD_PLL_CLOCK_SYNTH_1 0x0a
+#define BLIZZARD_PLL_MODE 0x0c
+#define BLIZZARD_CLK_SRC 0x0e
+#define BLIZZARD_MEM_BANK0_ACTIVATE 0x10
+#define BLIZZARD_MEM_BANK0_STATUS 0x14
+#define BLIZZARD_PANEL_CONFIGURATION 0x28
+#define BLIZZARD_HDISP 0x2a
+#define BLIZZARD_HNDP 0x2c
+#define BLIZZARD_VDISP0 0x2e
+#define BLIZZARD_VDISP1 0x30
+#define BLIZZARD_VNDP 0x32
+#define BLIZZARD_HSW 0x34
+#define BLIZZARD_VSW 0x38
+#define BLIZZARD_DISPLAY_MODE 0x68
+#define BLIZZARD_INPUT_WIN_X_START_0 0x6c
+#define BLIZZARD_DATA_SOURCE_SELECT 0x8e
+#define BLIZZARD_DISP_MEM_DATA_PORT 0x90
+#define BLIZZARD_DISP_MEM_READ_ADDR0 0x92
+#define BLIZZARD_POWER_SAVE 0xE6
+#define BLIZZARD_NDISP_CTRL_STATUS 0xE8
+
+/* Data source select */
+/* For S1D13745 */
+#define BLIZZARD_SRC_WRITE_LCD_BACKGROUND 0x00
+#define BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE 0x01
+#define BLIZZARD_SRC_WRITE_OVERLAY_ENABLE 0x04
+#define BLIZZARD_SRC_DISABLE_OVERLAY 0x05
+/* For S1D13744 */
+#define BLIZZARD_SRC_WRITE_LCD 0x00
+#define BLIZZARD_SRC_BLT_LCD 0x06
+
+#define BLIZZARD_COLOR_RGB565 0x01
+#define BLIZZARD_COLOR_YUV420 0x09
+
+#define BLIZZARD_VERSION_S1D13745 0x01 /* Hailstorm */
+#define BLIZZARD_VERSION_S1D13744 0x02 /* Blizzard */
+
+#define BLIZZARD_AUTO_UPDATE_TIME (HZ / 20)
+
+
+
+static struct {
+ int version;
+} blizzard;
+
+
+static inline void blizzard_cmd(u8 cmd)
+{
+ omap_rfbi_write_command(&cmd, 1);
+}
+
+static inline void blizzard_write(u8 cmd, const u8 *buf, int len)
+{
+ omap_rfbi_write_command(&cmd, 1);
+ omap_rfbi_write_data(buf, len);
+}
+
+static inline void blizzard_read(u8 cmd, u8 *buf, int len)
+{
+ omap_rfbi_write_command(&cmd, 1);
+ omap_rfbi_read_data(buf, len);
+}
+
+static u8 blizzard_read_reg(u8 cmd)
+{
+ u8 data;
+ blizzard_read(cmd, &data, 1);
+ return data;
+}
+
+static int blizzard_ctrl_init(struct omap_display *display)
+{
+ DBG("blizzard_ctrl_init\n");
+
+ return 0;
+}
+
+
+static int blizzard_ctrl_enable(struct omap_display *display)
+{
+ int r = 0;
+ u8 rev, conf;
+
+ DBG("blizzard_ctrl_enable\n");
+
+ if (display->hw_config.ctrl_enable) {
+ r = display->hw_config.ctrl_enable(display);
+ if (r)
+ return r;
+ }
+
+ msleep(100);
+
+ rev = blizzard_read_reg(BLIZZARD_CLK_SRC);
+ printk("CLK_SRC %x\n", rev);
+
+ rev = blizzard_read_reg(BLIZZARD_PLL_DIV);
+ printk("PLLDIV %x\n", rev);
+
+ rev = blizzard_read_reg(BLIZZARD_REV_CODE);
+ conf = blizzard_read_reg(BLIZZARD_CONFIG);
+
+ printk("rev %x, conf %x\n", rev, conf);
+
+ switch (rev & 0xfc) {
+ case 0x9c:
+ blizzard.version = BLIZZARD_VERSION_S1D13744;
+ pr_info("omapfb: s1d13744 LCD controller rev %d "
+ "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
+ break;
+ case 0xa4:
+ blizzard.version = BLIZZARD_VERSION_S1D13745;
+ pr_info("omapfb: s1d13745 LCD controller rev %d "
+ "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
+ break;
+ default:
+ printk("invalid s1d1374x revision %02x\n",
+ rev);
+ r = -ENODEV;
+ }
+
+ return r;
+}
+
+static void blizzard_ctrl_disable(struct omap_display *display)
+{
+ DBG("blizzard_ctrl_disable\n");
+
+ if (display->hw_config.ctrl_disable)
+ display->hw_config.ctrl_disable(display);
+}
+
+int rfbi_configure(int rfbi_module, int bpp, int lines);
+
+static void blizzard_ctrl_setup_update(struct omap_display *display,
+ int x, int y, int w, int h)
+{
+ u8 tmp[18];
+ int x_end, y_end;
+
+ DBG("blizzard_ctrl_setup_update\n");
+
+ x_end = x + w - 1;
+ y_end = y + h - 1;
+
+ tmp[0] = x;
+ tmp[1] = x >> 8;
+ tmp[2] = y;
+ tmp[3] = y >> 8;
+ tmp[4] = x_end;
+ tmp[5] = x_end >> 8;
+ tmp[6] = y_end;
+ tmp[7] = y_end >> 8;
+
+ /* scaling? */
+ tmp[8] = x;
+ tmp[9] = x >> 8;
+ tmp[10] = y;
+ tmp[11] = y >> 8;
+ tmp[12] = x_end;
+ tmp[13] = x_end >> 8;
+ tmp[14] = y_end;
+ tmp[15] = y_end >> 8;
+
+ tmp[16] = BLIZZARD_COLOR_RGB565; //color_mode;
+
+ if (blizzard.version == BLIZZARD_VERSION_S1D13745)
+ tmp[17] = BLIZZARD_SRC_WRITE_LCD_BACKGROUND;
+ else
+ tmp[17] = blizzard.version == BLIZZARD_VERSION_S1D13744 ?
+ BLIZZARD_SRC_WRITE_LCD :
+ BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
+
+ rfbi_configure(display->hw_config.u.rfbi.channel,
+ 16,
+ 8);
+
+ blizzard_write(BLIZZARD_INPUT_WIN_X_START_0, tmp, 18);
+
+ rfbi_configure(display->hw_config.u.rfbi.channel,
+ 16,
+ 16);
+}
+
+static int blizzard_ctrl_enable_te(struct omap_display *display, int enable)
+{
+ return 0;
+}
+
+static int blizzard_ctrl_rotate(struct omap_display *display, int rotate)
+{
+ return 0;
+}
+
+static int blizzard_ctrl_mirror(struct omap_display *display, int enable)
+{
+ return 0;
+}
+
+static int blizzard_run_test(struct omap_display *display, int test_num)
+{
+ return 0;
+}
+
+static struct omap_ctrl blizzard_ctrl = {
+ .owner = THIS_MODULE,
+ .name = "ctrl-blizzard",
+ .init = blizzard_ctrl_init,
+ .enable = blizzard_ctrl_enable,
+ .disable = blizzard_ctrl_disable,
+ .setup_update = blizzard_ctrl_setup_update,
+ .enable_te = blizzard_ctrl_enable_te,
+ .rotate = blizzard_ctrl_rotate,
+ .mirror = blizzard_ctrl_mirror,
+ .run_test = blizzard_run_test,
+ .pixel_size = 16,
+
+ .timings = {
+ .cs_on_time = 0,
+
+ .we_on_time = 9000,
+ .we_off_time = 18000,
+ .we_cycle_time = 36000,
+
+ .re_on_time = 9000,
+ .re_off_time = 27000,
+ .re_cycle_time = 36000,
+
+ .access_time = 27000,
+ .cs_off_time = 36000,
+
+ .cs_pulse_width = 0,
+ },
+};
+
+
+static int __init blizzard_init(void)
+{
+ DBG("blizzard_init\n");
+ omap_dss_register_ctrl(&blizzard_ctrl);
+ return 0;
+}
+
+static void __exit blizzard_exit(void)
+{
+ DBG("blizzard_exit\n");
+
+ omap_dss_unregister_ctrl(&blizzard_ctrl);
+}
+
+module_init(blizzard_init);
+module_exit(blizzard_exit);
+
+MODULE_AUTHOR("Tomi Valkeinen <tom...@no...>");
+MODULE_DESCRIPTION("Blizzard Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/omap2/panel-n800.c b/drivers/video/omap2/panel-n800.c
new file mode 100644
index 0000000..3ae0a16
--- /dev/null
+++ b/drivers/video/omap2/panel-n800.c
@@ -0,0 +1,437 @@
+
+/*#define DEBUG*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/spi/spi.h>
+#include <linux/jiffies.h>
+#include <linux/sched.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+
+#include <mach/display.h>
+#include <mach/dma.h>
+
+#define MIPID_CMD_READ_DISP_ID 0x04
+#define MIPID_CMD_READ_RED 0x06
+#define MIPID_CMD_READ_GREEN 0x07
+#define MIPID_CMD_READ_BLUE 0x08
+#define MIPID_CMD_READ_DISP_STATUS 0x09
+#define MIPID_CMD_RDDSDR 0x0F
+#define MIPID_CMD_SLEEP_IN 0x10
+#define MIPID_CMD_SLEEP_OUT 0x11
+#define MIPID_CMD_DISP_OFF 0x28
+#define MIPID_CMD_DISP_ON 0x29
+
+#define MIPID_VER_LPH8923 3
+#define MIPID_VER_LS041Y3 4
+
+#define MIPID_ESD_CHECK_PERIOD msecs_to_jiffies(5000)
+
+#ifdef DEBUG
+#define DBG(format, ...) printk(KERN_DEBUG "PN800: " format, ## __VA_ARGS__)
+#else
+#define DBG(format, ...)
+#endif
+
+struct pn800_device {
+ struct backlight_device *bl_dev;
+ int enabled;
+ int model;
+ int revision;
+ u8 display_id[3];
+ unsigned int saved_bklight_level;
+ unsigned long hw_guard_end; /* next value of jiffies
+ when we can issue the
+ next sleep in/out command */
+ unsigned long hw_guard_wait; /* max guard time in jiffies */
+
+ struct spi_device *spi;
+ struct mutex mutex;
+ struct omap_panel panel;
+ struct omap_display *display;
+};
+
+
+static void pn800_transfer(struct pn800_device *md, int cmd,
+ const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
+{
+ struct spi_message m;
+ struct spi_transfer *x, xfer[4];
+ u16 w;
+ int r;
+
+ BUG_ON(md->spi == NULL);
+
+ spi_message_init(&m);
+
+ memset(xfer, 0, sizeof(xfer));
+ x = &xfer[0];
+
+ cmd &= 0xff;
+ x->tx_buf = &cmd;
+ x->bits_per_word = 9;
+ x->len = 2;
+ spi_message_add_tail(x, &m);
+
+ if (wlen) {
+ x++;
+ x->tx_buf = wbuf;
+ x->len = wlen;
+ x->bits_per_word = 9;
+ spi_message_add_tail(x, &m);
+ }
+
+ if (rlen) {
+ x++;
+ x->rx_buf = &w;
+ x->len = 1;
+ spi_message_add_tail(x, &m);
+
+ if (rlen > 1) {
+ /* Arrange for the extra clock before the first
+ * data bit.
+ */
+ x->bits_per_word = 9;
+ x->len = 2;
+
+ x++;
+ x->rx_buf = &rbuf[1];
+ x->len = rlen - 1;
+ spi_message_add_tail(x, &m);
+ }
+ }
+
+ r = spi_sync(md->spi, &m);
+ if (r < 0)
+ dev_dbg(&md->spi->dev, "spi_sync %d\n", r);
+
+ if (rlen)
+ rbuf[0] = w & 0xff;
+}
+
+static inline void pn800_cmd(struct pn800_device *md, int cmd)
+{
+ pn800_transfer(md, cmd, NULL, 0, NULL, 0);
+}
+
+static inline void pn800_write(struct pn800_device *md,
+ int reg, const u8 *buf, int len)
+{
+ pn800_transfer(md, reg, buf, len, NULL, 0);
+}
+
+static inline void pn800_read(struct pn800_device *md,
+ int reg, u8 *buf, int len)
+{
+ pn800_transfer(md, reg, NULL, 0, buf, len);
+}
+
+static void set_data_lines(struct pn800_device *md, int data_lines)
+{
+ u16 par;
+
+ switch (data_lines) {
+ case 16:
+ par = 0x150;
+ break;
+ case 18:
+ par = 0x160;
+ break;
+ case 24:
+ par = 0x170;
+ break;
+ }
+ pn800_write(md, 0x3a, (u8 *)&par, 2);
+}
+
+static void send_init_string(struct pn800_device *md)
+{
+ u16 initpar[] = { 0x0102, 0x0100, 0x0100 };
+ int data_lines;
+
+ pn800_write(md, 0xc2, (u8 *)initpar, sizeof(initpar));
+
+ data_lines = (int)md->display->hw_config.priv; // XXX
+
+ set_data_lines(md, data_lines);
+}
+
+static void hw_guard_start(struct pn800_device *md, int guard_msec)
+{
+ md->hw_guard_wait = msecs_to_jiffies(guard_msec);
+ md->hw_guard_end = jiffies + md->hw_guard_wait;
+}
+
+static void hw_guard_wait(struct pn800_device *md)
+{
+ unsigned long wait = md->hw_guard_end - jiffies;
+
+ if ((long)wait > 0 && wait <= md->hw_guard_wait) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(wait);
+ }
+}
+
+static void set_sleep_mode(struct pn800_device *md, int on)
+{
+ int cmd, sleep_time = 50;
+
+ if (on)
+ cmd = MIPID_CMD_SLEEP_IN;
+ else
+ cmd = MIPID_CMD_SLEEP_OUT;
+ hw_guard_wait(md);
+ pn800_cmd(md, cmd);
+ hw_guard_start(md, 120);
+ /*
+ * When we enable the panel, it seems we _have_ to sleep
+ * 120 ms before sending the init string. When disabling the
+ * panel we'll sleep for the duration of 2 frames, so that the
+ * controller can still provide the PCLK,HS,VS signals. */
+ if (!on)
+ sleep_time = 120;
+ msleep(sleep_time);
+}
+
+static void set_display_state(struct pn800_device *md, int enabled)
+{
+ int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
+
+ pn800_cmd(md, cmd);
+}
+
+static int panel_enabled(struct pn800_device *md)
+{
+ u32 disp_status;
+ int enabled;
+
+ pn800_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4);
+ disp_status = __be32_to_cpu(disp_status);
+ enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
+ dev_dbg(&md->spi->dev,
+ "LCD panel %s enabled by bootloader (status 0x%04x)\n",
+ enabled ? "" : "not ", disp_status);
+ DBG("status %#08x\n", disp_status);
+ return enabled;
+}
+
+static int panel_detect(struct pn800_device *md)
+{
+ pn800_read(md, MIPID_CMD_READ_DISP_ID, md->display_id, 3);
+ dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n",
+ md->display_id[0], md->display_id[1], md->display_id[2]);
+
+ switch (md->display_id[0]) {
+ case 0x45:
+ md->model = MIPID_VER_LPH8923;
+ md->panel.name = "lph8923";
+ break;
+ case 0x83:
+ md->model = MIPID_VER_LS041Y3;
+ md->panel.name = "ls041y3";
+ //md->esd_check = ls041y3_esd_check;
+ break;
+ default:
+ md->panel.name = "unknown";
+ dev_err(&md->spi->dev, "invalid display ID\n");
+ return -ENODEV;
+ }
+
+ md->revision = md->display_id[1];
+ pr_info("omapfb: %s rev %02x LCD detected\n",
+ md->panel.name, md->revision);
+
+ return 0;
+}
+
+
+
+static int pn800_panel_enable(struct omap_display *display)
+{
+ int r;
+ struct pn800_device *md =
+ (struct pn800_device *)display->panel->priv;
+
+ DBG("pn800_panel_enable\n");
+
+ mutex_lock(&md->mutex);
+
+ if (display->hw_config.panel_enable)
+ display->hw_config.panel_enable(display);
+
+ msleep(50); // wait for power up
+
+ r = panel_detect(md);
+ if (r) {
+ mutex_unlock(&md->mutex);
+ return r;
+ }
+
+ md->enabled = panel_enabled(md);
+
+ if (md->enabled) {
+ DBG("panel already enabled\n");
+ ; /*pn800_esd_start_check(md);*/
+ } else {
+ ; /*md->saved_bklight_level = pn800_get_bklight_level(panel);*/
+ }
+
+
+ if (md->enabled) {
+ mutex_unlock(&md->mutex);
+ return 0;
+ }
+
+ set_sleep_mode(md, 0);
+ md->enabled = 1;
+ send_init_string(md);
+ set_display_state(md, 1);
+ //mipid_set_bklight_level(panel, md->saved_bklight_level);
+ //mipid_esd_start_check(md);
+
+ mutex_unlock(&md->mutex);
+ return 0;
+}
+
+static void pn800_panel_disable(struct omap_display *display)
+{
+ struct pn800_device *md =
+ (struct pn800_device *)display->panel->priv;
+
+ DBG("pn800_panel_disable\n");
+
+ mutex_lock(&md->mutex);
+
+ if (!md->enabled) {
+ mutex_unlock(&md->mutex);
+ return;
+ }
+ /*md->saved_bklight_level = pn800_get_bklight_level(panel);*/
+ /*pn800_set_bklight_level(panel, 0);*/
+
+ set_display_state(md, 0);
+ set_sleep_mode(md, 1);
+ md->enabled = 0;
+
+
+ if (display->hw_config.panel_disable)
+ display->hw_config.panel_disable(display);
+
+ mutex_unlock(&md->mutex);
+}
+
+static int pn800_panel_init(struct omap_display *display)
+{
+ struct pn800_device *md =
+ (struct pn800_device *)display->panel->priv;
+
+ DBG("pn800_panel_init\n");
+
+ mutex_init(&md->mutex);
+ md->display = display;
+
+ return 0;
+}
+
+static int pn800_run_test(struct omap_display *display, int test_num)
+{
+ return 0;
+}
+
+static struct omap_panel pn800_panel = {
+ .owner = THIS_MODULE,
+ .name = "panel-pn800",
+ .init = pn800_panel_init,
+ /*.remove = pn800_cleanup,*/
+ .enable = pn800_panel_enable,
+ .disable = pn800_panel_disable,
+ //.set_mode = pn800_set_mode,
+ .run_test = pn800_run_test,
+
+ .timings = {
+ .x_res = 800,
+ .y_res = 480,
+
+ .pixel_clock = 21940,
+ .hsw = 50,
+ .hfp = 20,
+ .hbp = 15,
+
+ .vsw = 2,
+ .vfp = 1,
+ .vbp = 3,
+ },
+ .config = OMAP_DSS_LCD_TFT,
+
+ .bpp = 16,
+};
+
+static int pn800_spi_probe(struct spi_device *spi)
+{
+ struct pn800_device *md;
+
+ DBG("pn800_spi_probe\n");
+
+ md = kzalloc(sizeof(*md), GFP_KERNEL);
+ if (md == NULL) {
+ dev_err(&spi->dev, "out of memory\n");
+ return -ENOMEM;
+ }
+
+ spi->mode = SPI_MODE_0;
+ md->spi = spi;
+ dev_set_drvdata(&spi->dev, md);
+ md->panel = pn800_panel;
+ pn800_panel.priv = md;
+
+ omap_dss_register_panel(&pn800_panel);
+
+ return 0;
+}
+
+static int pn800_spi_remove(struct spi_device *spi)
+{
+ struct pn800_device *md = dev_get_drvdata(&spi->dev);
+
+ DBG("pn800_spi_remove\n");
+
+ omap_dss_unregister_panel(&pn800_panel);
+
+ /*pn800_disable(&md->panel);*/
+ kfree(md);
+
+ return 0;
+}
+
+static struct spi_driver pn800_spi_driver = {
+ .driver = {
+ .name = "panel-n800",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = pn800_spi_probe,
+ .remove = __devexit_p(pn800_spi_remove),
+};
+
+static int __init pn800_init(void)
+{
+ DBG("pn800_init\n");
+ return spi_register_driver(&pn800_spi_driver);
+}
+
+static void __exit pn800_exit(void)
+{
+ DBG("pn800_exit\n");
+ spi_unregister_driver(&pn800_spi_driver);
+}
+
+module_init(pn800_init);
+module_exit(pn800_exit);
+
+MODULE_AUTHOR("Tomi Valkeinen <tom...@no...>");
+MODULE_DESCRIPTION("N800 LCD Driver");
+MODULE_LICENSE("GPL");
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