Merge branch 'u-boot-samsung/master' into 'u-boot-arm/master'

4 files changed, 270 insertions, 12 deletions

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 93a91c3..248aa35 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -42,3 +42,4 @@ obj-$(CONFIG_VIDEO_TEGRA) += tegra.o
 obj-$(CONFIG_VIDEO_VCXK) += bus_vcxk.o
 obj-$(CONFIG_FORMIKE) += formike.o
 obj-$(CONFIG_AM335X_LCD) += am335x-fb.o
+obj-$(CONFIG_VIDEO_PARADE) += parade.o
diff --git a/drivers/video/exynos_fb.c b/drivers/video/exynos_fb.c
index e1e0d80..180a3b4 100644
--- a/drivers/video/exynos_fb.c
+++ b/drivers/video/exynos_fb.c
@@ -27,17 +27,13 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static unsigned int panel_width, panel_height;
 
-/*
- * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
- * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix to reserve
- * FB memory at a very early stage, i.e even before exynos_fimd_parse_dt()
- * is called. So, we are forced to statically assign it.
- */
 #ifdef CONFIG_OF_CONTROL
 vidinfo_t panel_info  = {
-	.vl_col = LCD_XRES,
-	.vl_row = LCD_YRES,
-	.vl_bpix = LCD_COLOR16,
+	/*
+	 * Insert a value here so that we don't end up in the BSS
+	 * Reference: drivers/video/tegra.c
+	 */
+	.vl_col = -1,
 };
 #endif
 
@@ -141,7 +137,7 @@ static void lcd_panel_on(vidinfo_t *vid)
 }
 
 #ifdef CONFIG_OF_CONTROL
-int exynos_fimd_parse_dt(const void *blob)
+int exynos_lcd_early_init(const void *blob)
 {
 	unsigned int node;
 	node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
@@ -286,8 +282,6 @@ void lcd_ctrl_init(void *lcdbase)
 	set_lcd_clk();
 
 #ifdef CONFIG_OF_CONTROL
-	if (exynos_fimd_parse_dt(gd->fdt_blob))
-		debug("Can't get proper panel info\n");
 #ifdef CONFIG_EXYNOS_MIPI_DSIM
 	exynos_init_dsim_platform_data(&panel_info);
 #endif
diff --git a/drivers/video/exynos_fimd.c b/drivers/video/exynos_fimd.c
index cebbba7..f67fa81 100644
--- a/drivers/video/exynos_fimd.c
+++ b/drivers/video/exynos_fimd.c
@@ -251,6 +251,45 @@ void exynos_fimd_window_off(unsigned int win_id)
 	writel(cfg, &fimd_ctrl->winshmap);
 }
 
+#ifdef CONFIG_OF_CONTROL
+/*
+* The reset value for FIMD SYSMMU register MMU_CTRL is 3
+* on Exynos5420 and newer versions.
+* This means FIMD SYSMMU is on by default on Exynos5420
+* and newer versions.
+* Since in u-boot we don't use SYSMMU, we should disable
+* those FIMD SYSMMU.
+* Note that there are 2 SYSMMU for FIMD: m0 and m1.
+* m0 handles windows 0 and 4, and m1 handles windows 1, 2 and 3.
+* We disable both of them here.
+*/
+void exynos_fimd_disable_sysmmu(void)
+{
+	u32 *sysmmufimd;
+	unsigned int node;
+	int node_list[2];
+	int count;
+	int i;
+
+	count = fdtdec_find_aliases_for_id(gd->fdt_blob, "fimd",
+				COMPAT_SAMSUNG_EXYNOS_SYSMMU, node_list, 2);
+	for (i = 0; i < count; i++) {
+		node = node_list[i];
+		if (node <= 0) {
+			debug("Can't get device node for fimd sysmmu\n");
+			return;
+		}
+
+		sysmmufimd = (u32 *)fdtdec_get_addr(gd->fdt_blob, node, "reg");
+		if (!sysmmufimd) {
+			debug("Can't get base address for sysmmu fimdm0");
+			return;
+		}
+
+		writel(0x0, sysmmufimd);
+	}
+}
+#endif
 
 void exynos_fimd_lcd_init(vidinfo_t *vid)
 {
@@ -268,6 +307,10 @@ void exynos_fimd_lcd_init(vidinfo_t *vid)
 								node, "reg");
 	if (fimd_ctrl == NULL)
 		debug("Can't get the FIMD base address\n");
+
+	if (fdtdec_get_bool(gd->fdt_blob, node, "samsung,disable-sysmmu"))
+		exynos_fimd_disable_sysmmu();
+
 #else
 	fimd_ctrl = (struct exynos_fb *)samsung_get_base_fimd();
 #endif
diff --git a/drivers/video/parade.c b/drivers/video/parade.c
new file mode 100644
index 0000000..0f543f6
--- /dev/null
+++ b/drivers/video/parade.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * This file is a driver for Parade dP<->LVDS bridges. The original submission
+ * is for the ps8625 chip.
+ */
+#include <config.h>
+#include <common.h>
+#include <i2c.h>
+#include <fdtdec.h>
+
+/*
+ * Initialization of the chip is a process of writing certaing values into
+ * certain registers over i2c bus. The chip in fact responds to a range of
+ * addresses on the i2c bus, so for each written value three parameters are
+ * required: i2c address, register address and the actual value.
+ *
+ * The base address is derived from the device tree, only address offset is
+ * stored in the table below.
+ */
+/**
+ * struct reg_data() - data for a parade register write
+ *
+ * @addr_off        offset from the i2c base address for parade
+ * @reg_addr        register address to write
+ * @value           value to be written
+ */
+struct reg_data {
+	uint8_t addr_off;
+	uint8_t reg;
+	uint8_t value;
+} _packed;
+
+#define END_OF_TABLE 0xff /* Ficticious offset */
+
+static const struct reg_data parade_values[] = {
+	{0x02, 0xa1, 0x01},  /* HPD low */
+	 /*
+	  * SW setting
+	  * [1:0] SW output 1.2V voltage is lower to 96%
+	  */
+	{0x04, 0x14, 0x01},
+	 /*
+	  * RCO SS setting
+	  * [5:4] = b01 0.5%, b10 1%, b11 1.5%
+	  */
+	{0x04, 0xe3, 0x20},
+	{0x04, 0xe2, 0x80}, /* [7] RCO SS enable */
+	 /*
+	  *  RPHY Setting
+	  * [3:2] CDR tune wait cycle before
+	  * measure for fine tune b00: 1us,
+	  * 01: 0.5us, 10:2us, 11:4us.
+	  */
+	{0x04, 0x8a, 0x0c},
+	{0x04, 0x89, 0x08}, /* [3] RFD always on */
+	 /*
+	  * CTN lock in/out:
+	  * 20000ppm/80000ppm. Lock out 2
+	  * times.
+	  */
+	{0x04, 0x71, 0x2d},
+	 /*
+	  * 2.7G CDR settings
+	  * NOF=40LSB for HBR CDR setting
+	  */
+	{0x04, 0x7d, 0x07},
+	{0x04, 0x7b, 0x00},  /* [1:0] Fmin=+4bands */
+	{0x04, 0x7a, 0xfd},  /* [7:5] DCO_FTRNG=+-40% */
+	 /*
+	  * 1.62G CDR settings
+	  * [5:2]NOF=64LSB [1:0]DCO scale is 2/5
+	  */
+	{0x04, 0xc0, 0x12},
+	{0x04, 0xc1, 0x92},  /* Gitune=-37% */
+	{0x04, 0xc2, 0x1c},  /* Fbstep=100% */
+	{0x04, 0x32, 0x80},  /* [7] LOS signal disable */
+	 /*
+	  * RPIO Setting
+	  * [7:4] LVDS driver bias current :
+	  * 75% (250mV swing)
+	  */
+	{0x04, 0x00, 0xb0},
+	 /*
+	  * [7:6] Right-bar GPIO output strength is 8mA
+	  */
+	{0x04, 0x15, 0x40},
+	 /* EQ Training State Machine Setting */
+	{0x04, 0x54, 0x10},  /* RCO calibration start */
+	 /* [4:0] MAX_LANE_COUNT set to one lane */
+	{0x01, 0x02, 0x81},
+	 /* [4:0] LANE_COUNT_SET set to one lane */
+	{0x01, 0x21, 0x81},
+	{0x00, 0x52, 0x20},
+	{0x00, 0xf1, 0x03},  /* HPD CP toggle enable */
+	{0x00, 0x62, 0x41},
+	 /* Counter number, add 1ms counter delay */
+	{0x00, 0xf6, 0x01},
+	 /*
+	  * [6]PWM function control by
+	  * DPCD0040f[7], default is PWM
+	  * block always works.
+	  */
+	{0x00, 0x77, 0x06},
+	 /*
+	  * 04h Adjust VTotal tolerance to
+	  * fix the 30Hz no display issue
+	  */
+	{0x00, 0x4c, 0x04},
+	 /* DPCD00400='h00, Parade OUI = 'h001cf8 */
+	{0x01, 0xc0, 0x00},
+	{0x01, 0xc1, 0x1c},  /* DPCD00401='h1c */
+	{0x01, 0xc2, 0xf8},  /* DPCD00402='hf8 */
+	 /*
+	  * DPCD403~408 = ASCII code
+	  * D2SLV5='h4432534c5635
+	  */
+	{0x01, 0xc3, 0x44},
+	{0x01, 0xc4, 0x32},  /* DPCD404 */
+	{0x01, 0xc5, 0x53},  /* DPCD405 */
+	{0x01, 0xc6, 0x4c},  /* DPCD406 */
+	{0x01, 0xc7, 0x56},  /* DPCD407 */
+	{0x01, 0xc8, 0x35},  /* DPCD408 */
+	 /*
+	  * DPCD40A, Initial Code major  revision
+	  * '01'
+	  */
+	{0x01, 0xca, 0x01},
+	 /* DPCD40B, Initial Code minor revision '05' */
+	{0x01, 0xcb, 0x05},
+	 /* DPCD720, Select internal PWM */
+	{0x01, 0xa5, 0xa0},
+	 /*
+	  * FFh for 100% PWM of brightness, 0h for 0%
+	  * brightness
+	  */
+	{0x01, 0xa7, 0xff},
+	 /*
+	  * Set LVDS output as 6bit-VESA mapping,
+	  * single LVDS channel
+	  */
+	{0x01, 0xcc, 0x13},
+	 /* Enable SSC set by register */
+	{0x02, 0xb1, 0x20},
+	 /*
+	  * Set SSC enabled and +/-1% central
+	  * spreading
+	  */
+	{0x04, 0x10, 0x16},
+	 /* MPU Clock source: LC => RCO */
+	{0x04, 0x59, 0x60},
+	{0x04, 0x54, 0x14},  /* LC -> RCO */
+	{0x02, 0xa1, 0x91},  /* HPD high */
+	{END_OF_TABLE}
+};
+
+/**
+ * Write values table into the Parade eDP bridge
+ *
+ * @return      0 on success, non-0 on failure
+ */
+
+static int parade_write_regs(int base_addr, const struct reg_data *table)
+{
+	int ret = 0;
+
+	while (!ret && (table->addr_off != END_OF_TABLE)) {
+		ret = i2c_write(base_addr + table->addr_off,
+				table->reg, 1,
+				(uint8_t *)&table->value,
+				sizeof(table->value));
+		table++;
+	}
+	return ret;
+}
+
+int parade_init(const void *blob)
+{
+	int bus, old_bus;
+	int parent;
+	int node;
+	int addr;
+	int ret;
+
+	node = fdtdec_next_compatible(blob, 0, COMPAT_PARADE_PS8625);
+	if (node < 0)
+		return 0;
+
+	parent = fdt_parent_offset(blob, node);
+	if (parent < 0) {
+		debug("%s: Could not find parent i2c node\n", __func__);
+		return -1;
+	}
+	addr = fdtdec_get_int(blob, node, "reg", -1);
+	if (addr < 0) {
+		debug("%s: Could not find i2c address\n", __func__);
+		return -1;
+	}
+
+	bus = i2c_get_bus_num_fdt(parent);
+	old_bus = i2c_get_bus_num();
+
+	debug("%s: Using i2c bus %d\n", __func__, bus);
+
+	/*
+	 * TODO(sjg@chromium.org): Hmmm we seem to need some sort of delay
+	 * here.
+	 */
+	mdelay(40);
+	i2c_set_bus_num(bus);
+	ret = parade_write_regs(addr, parade_values);
+
+	i2c_set_bus_num(old_bus);
+
+	return ret;
+}