GOOGLE/SNOW: add edp support to ramstage

Add basic edp support to the ramstage. Not working.

Change-Id: I15086e03417edca7426c214e67b51719d8ed9341
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/3055
Tested-by: build bot (Jenkins)

1 files changed, 12 insertions, 6 deletions

diff --git a/src/cpu/samsung/exynos5-common/s5p-dp-reg.c b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c
index adb64a8e10..60e1398ba4 100644
--- a/src/cpu/samsung/exynos5-common/s5p-dp-reg.c
+++ b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c
@@ -19,6 +19,8 @@
 #include "cpu/samsung/exynos5250/fimd.h"
 #include "s5p-dp-core.h"
 
+#include <console/console.h>
+
 void s5p_dp_reset(struct s5p_dp_device *dp)
 {
 	u32 reg;
@@ -127,7 +129,7 @@ int s5p_dp_init_analog_func(struct s5p_dp_device *dp)
 		start = get_timer(0);
 		while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
 			if (get_timer(start) > PLL_LOCK_TIMEOUT) {
-				debug("%s: PLL is not locked yet\n", __func__);
+				printk(BIOS_DEBUG, "%s: PLL is not locked yet\n", __func__);
 				return -1;
 			}
 		}
@@ -174,6 +176,9 @@ int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp)
 	/* Enable AUX CH operation */
 	setbits_le32(&base->aux_ch_ctl_2, AUX_EN);
 
+	printk(BIOS_DEBUG, "%s: base: 0x%p, &base->aux_ch_ctl_2: 0x%p, aux_ch_ctl_2: 0x%08x\n",
+			__func__, base, &base->aux_ch_ctl_2, readl(&base->aux_ch_ctl_2));
+
 	/* Is AUX CH command reply received? */
 	reg = readl(&base->dp_int_sta);
 	while (!(reg & RPLY_RECEIV))
@@ -184,6 +189,7 @@ int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp)
 
 	/* Clear interrupt source for AUX CH access error */
 	reg = readl(&base->dp_int_sta);
+	printk(BIOS_DEBUG, "%s: dp_int_sta: 0x%02x\n", __func__, reg);
 	if (reg & AUX_ERR) {
 		writel(AUX_ERR, &base->dp_int_sta);
 		return -1;
@@ -192,7 +198,7 @@ int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp)
 	/* Check AUX CH error access status */
 	reg = readl(&base->dp_int_sta);
 	if ((reg & AUX_STATUS_MASK) != 0) {
-		debug("AUX CH error happens: %d\n\n",
+		printk(BIOS_DEBUG, "AUX CH error happens: %d\n\n",
 			reg & AUX_STATUS_MASK);
 		return -1;
 	}
@@ -241,7 +247,7 @@ int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp,
 		if (retval == 0)
 			break;
 		else
-			debug("Aux Transaction fail!\n");
+			printk(BIOS_DEBUG, "Aux Transaction fail!\n");
 	}
 
 	return retval;
@@ -284,7 +290,7 @@ int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp,
 		if (retval == 0)
 			break;
 		else
-			debug("Aux Transaction fail!\n");
+			printk(BIOS_DEBUG, "Aux Transaction fail!\n");
 	}
 
 	/* Read data buffer */
@@ -359,7 +365,7 @@ int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp)
 	reg = readl(&base->sys_ctl_2);
 
 	if (reg & CHA_STA) {
-		debug("Input stream clk is changing\n");
+		printk(BIOS_DEBUG, "Input stream clk is changing\n");
 		return -1;
 	}
 
@@ -433,7 +439,7 @@ int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp)
 	} while (get_timer(start) <= STREAM_ON_TIMEOUT);
 
 	if (i != 4) {
-		debug("s5p_dp_is_video_stream_on timeout\n");
+		printk(BIOS_DEBUG, "s5p_dp_is_video_stream_on timeout\n");
 		return -1;
 	}