[U-Boot] [PATCH V4 02/12] video:mipidsim:fdt: Add DT support for mipi dsim driver

Piotr Wilczek p.wilczek at samsung.com
Tue Mar 4 14:55:06 CET 2014


This patch enables parsing mipi data from device tree.
Non device tree case is still supported.

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>
---
Changes for v4:
 - use "-" hypen for DT bindings

Changes for v3:
 - none

Changes for v2:
 - removed panel specific init function 's6e8ax0_init' to the board file

 arch/arm/include/asm/arch-exynos/mipi_dsim.h |  5 ++
 drivers/video/exynos_mipi_dsi.c              | 96 ++++++++++++++++++++++++++++
 include/fdtdec.h                             |  1 +
 lib/fdtdec.c                                 |  1 +
 4 files changed, 103 insertions(+)

diff --git a/arch/arm/include/asm/arch-exynos/mipi_dsim.h b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
index 40aca71..50e5c25 100644
--- a/arch/arm/include/asm/arch-exynos/mipi_dsim.h
+++ b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
@@ -12,6 +12,7 @@
 
 #include <linux/list.h>
 #include <linux/fb.h>
+#include <lcd.h>
 
 #define PANEL_NAME_SIZE		(32)
 
@@ -368,8 +369,12 @@ int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device
 						*lcd_dev);
 
 void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd);
+void exynos_init_dsim_platform_data(vidinfo_t *vid);
 
 /* panel driver init based on mipi dsi interface */
 void s6e8ax0_init(void);
 
+#ifdef CONFIG_OF_CONTROL
+extern int mipi_power(void);
+#endif
 #endif /* _DSIM_H */
diff --git a/drivers/video/exynos_mipi_dsi.c b/drivers/video/exynos_mipi_dsi.c
index 8bb8fea..7dd4652 100644
--- a/drivers/video/exynos_mipi_dsi.c
+++ b/drivers/video/exynos_mipi_dsi.c
@@ -9,6 +9,8 @@
 
 #include <common.h>
 #include <malloc.h>
+#include <fdtdec.h>
+#include <libfdt.h>
 #include <linux/err.h>
 #include <asm/arch/dsim.h>
 #include <asm/arch/mipi_dsim.h>
@@ -22,7 +24,14 @@
 #define master_to_driver(a)	(a->dsim_lcd_drv)
 #define master_to_device(a)	(a->dsim_lcd_dev)
 
+DECLARE_GLOBAL_DATA_PTR;
+
 static struct exynos_platform_mipi_dsim *dsim_pd;
+#ifdef CONFIG_OF_CONTROL
+static struct mipi_dsim_config dsim_config_dt;
+static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
+static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
+#endif
 
 struct mipi_dsim_ddi {
 	int				bus_id;
@@ -238,3 +247,90 @@ void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
 
 	dsim_pd = pd;
 }
+
+#ifdef CONFIG_OF_CONTROL
+int exynos_dsim_config_parse_dt(const void *blob)
+{
+	int node;
+
+	node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
+	if (node <= 0) {
+		printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
+		return -ENODEV;
+	}
+
+	dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-interface", 0);
+
+	dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-virtual-ch", 0);
+
+	dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-pixel-format", 0);
+
+	dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-burst-mode", 0);
+
+	dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-no-data-lane", 0);
+
+	dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-e-byte-clk", 0);
+
+	dsim_config_dt.hfp = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-hfp", 0);
+
+	dsim_config_dt.p = fdtdec_get_int(blob, node,
+					  "samsung,dsim-config-p", 0);
+	dsim_config_dt.m = fdtdec_get_int(blob, node,
+					  "samsung,dsim-config-m", 0);
+	dsim_config_dt.s = fdtdec_get_int(blob, node,
+					  "samsung,dsim-config-s", 0);
+
+	dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-pll-stable-time", 0);
+
+	dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-esc-clk", 0);
+
+	dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-stop-holding-cnt", 0);
+
+	dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-bta-timeout", 0);
+
+	dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
+				"samsung,dsim-config-rx-timeout", 0);
+
+	mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
+				"samsung,dsim-device-name");
+
+	mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
+				"samsung,dsim-device-id", 0);
+
+	mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
+				"samsung,dsim-device-bus_id", 0);
+
+	mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
+				"samsung,dsim-device-reverse-panel", 0);
+
+	return 0;
+}
+
+void exynos_init_dsim_platform_data(vidinfo_t *vid)
+{
+	if (exynos_dsim_config_parse_dt(gd->fdt_blob))
+		debug("Can't get proper dsim config.\n");
+
+	strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
+	dsim_platform_data_dt.dsim_config = &dsim_config_dt;
+	dsim_platform_data_dt.mipi_power = mipi_power;
+	dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
+	dsim_platform_data_dt.lcd_panel_info = (void *)vid;
+
+	mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
+	exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
+
+	dsim_pd = &dsim_platform_data_dt;
+}
+#endif
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 19bab79..bd84c83 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -79,6 +79,7 @@ enum fdt_compat_id {
 	COMPAT_SAMSUNG_EXYNOS5_USB3_PHY,/* Exynos phy controller for usb3.0 */
 	COMPAT_SAMSUNG_EXYNOS_TMU,	/* Exynos TMU */
 	COMPAT_SAMSUNG_EXYNOS_FIMD,	/* Exynos Display controller */
+	COMPAT_SAMSUNG_EXYNOS_MIPI_DSI,	/* Exynos mipi dsi */
 	COMPAT_SAMSUNG_EXYNOS5_DP,	/* Exynos Display port controller */
 	COMPAT_SAMSUNG_EXYNOS5_DWMMC,	/* Exynos5 DWMMC controller */
 	COMPAT_SAMSUNG_EXYNOS_SERIAL,	/* Exynos UART */
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 1fecab3..c97fad3 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -52,6 +52,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
 	COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
 	COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
 	COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
+	COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
 	COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
 	COMPAT(SAMSUNG_EXYNOS5_DWMMC, "samsung,exynos5250-dwmmc"),
 	COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
-- 
1.8.3.2



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