[coreboot-gerrit] Patch set updated for coreboot: Add a driver for the parade ps8640
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Tue Mar 8 22:58:40 CET 2016
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13981
-gerrit
commit e78fbb5cda71c338ccc8212035d094d588c8b73d
Author: Jitao Shi <jitao.shi at mediatek.com>
Date: Fri Jan 8 15:59:46 2016 +0800
Add a driver for the parade ps8640
BRANCH=none
BUG=none
TEST=none
Change-Id: Icf397ce2ffdaed5048367daf2086c067984fea0a
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: b5a88793ccfc46af196300791a300be67b70f5b1
Original-Change-Id: I75adf2688c9c8b9a2338f7dee5d0ac10e7181529
Original-Signed-off-by: Jitao Shi <jitao.shi at mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/321056
Original-Commit-Ready: Yidi Lin <yidi.lin at mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin at mediatek.com>
Original-Reviewed-by: Julius Werner <jwerner at chromium.org>
---
src/drivers/parade/Kconfig | 1 +
src/drivers/parade/Makefile.inc | 1 +
src/drivers/parade/ps8640/Kconfig | 20 +++++++++
src/drivers/parade/ps8640/Makefile.inc | 16 +++++++
src/drivers/parade/ps8640/ps8640.c | 79 ++++++++++++++++++++++++++++++++++
src/drivers/parade/ps8640/ps8640.h | 45 +++++++++++++++++++
6 files changed, 162 insertions(+)
diff --git a/src/drivers/parade/Kconfig b/src/drivers/parade/Kconfig
index be80bb8..7fe74df 100644
--- a/src/drivers/parade/Kconfig
+++ b/src/drivers/parade/Kconfig
@@ -14,3 +14,4 @@
##
source src/drivers/parade/ps8625/Kconfig
+source src/drivers/parade/ps8640/Kconfig
diff --git a/src/drivers/parade/Makefile.inc b/src/drivers/parade/Makefile.inc
index 0470763..06367c1 100644
--- a/src/drivers/parade/Makefile.inc
+++ b/src/drivers/parade/Makefile.inc
@@ -14,3 +14,4 @@
##
subdirs-$(CONFIG_DRIVER_PARADE_PS8625) += ps8625/
+subdirs-$(CONFIG_DRIVER_PARADE_PS8640) += ps8640/
diff --git a/src/drivers/parade/ps8640/Kconfig b/src/drivers/parade/ps8640/Kconfig
new file mode 100644
index 0000000..f0d71bb
--- /dev/null
+++ b/src/drivers/parade/ps8640/Kconfig
@@ -0,0 +1,20 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2015 MediaTek Inc.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+
+config DRIVER_PARADE_PS8640
+ bool
+ default n
+ help
+ Parade PS8640 MIPI DSI to eDP Converter
diff --git a/src/drivers/parade/ps8640/Makefile.inc b/src/drivers/parade/ps8640/Makefile.inc
new file mode 100644
index 0000000..9bfe1e7
--- /dev/null
+++ b/src/drivers/parade/ps8640/Makefile.inc
@@ -0,0 +1,16 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2015 MediaTek Inc.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+
+ramstage-$(CONFIG_DRIVER_PARADE_PS8640) += ps8640.c
diff --git a/src/drivers/parade/ps8640/ps8640.c b/src/drivers/parade/ps8640/ps8640.c
new file mode 100644
index 0000000..08de2ee
--- /dev/null
+++ b/src/drivers/parade/ps8640/ps8640.c
@@ -0,0 +1,79 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 MediaTek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <delay.h>
+#include <device/i2c.h>
+#include <edid.h>
+#include <console/console.h>
+#include <timer.h>
+
+#include "ps8640.h"
+
+int ps8640_get_edid(uint8_t bus, uint8_t chip, struct edid *out)
+{
+ int ret;
+ u8 edid[EDID_LENGTH * 2];
+ u32 edid_size;
+
+ i2c_writeb(bus, chip + 2, PAGE2_I2C_BYPASS,
+ EDID_I2C_ADDR | I2C_BYPASS_EN);
+ ret = i2c_read_bytes(bus, EDID_I2C_ADDR, 0, edid, EDID_LENGTH);
+
+ if (ret != 0) {
+ printk(BIOS_INFO, "Failed to read EDID.\n");
+ return -1;
+ }
+
+ /* check if edid have extension flag, and read additional EDID data */
+ if (edid[EDID_EXTENSION_FLAG]) {
+ edid_size += EDID_LENGTH;
+ ret = i2c_read_bytes(bus, EDID_I2C_ADDR, EDID_LENGTH,
+ &edid[EDID_LENGTH], EDID_LENGTH);
+ if (ret != 0) {
+ printk(BIOS_INFO, "Failed to read EDID ext block.\n");
+ return -1;
+ }
+ }
+
+ if (decode_edid(edid, edid_size, out)) {
+ printk(BIOS_INFO, "Failed to decode EDID.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int ps8640_init(uint8_t bus, uint8_t chip)
+{
+ u8 set_vdo_done;
+ struct stopwatch sw;
+
+ stopwatch_init_msecs_expire(&sw, 350);
+
+ do {
+ i2c_readb(bus, chip + 2, PAGE2_GPIO_H, &set_vdo_done);
+ if (stopwatch_expired(&sw)) {
+ printk(BIOS_INFO, "Failed to init ps8640.\n");
+ return -1;
+ }
+ } while ((set_vdo_done & PS_GPIO9) != PS_GPIO9);
+
+ i2c_writeb(bus, chip + 3, PAGE3_SET_ADD, VDO_CTL_ADD);
+ i2c_writeb(bus, chip + 3, PAGE3_SET_VAL, VDO_DIS);
+ i2c_writeb(bus, chip + 3, PAGE3_SET_ADD, VDO_CTL_ADD);
+ i2c_writeb(bus, chip + 3, PAGE3_SET_VAL, VDO_EN);
+
+ return 0;
+}
diff --git a/src/drivers/parade/ps8640/ps8640.h b/src/drivers/parade/ps8640/ps8640.h
new file mode 100644
index 0000000..9e483b6
--- /dev/null
+++ b/src/drivers/parade/ps8640/ps8640.h
@@ -0,0 +1,45 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 MediaTek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <edid.h>
+#include <types.h>
+
+#ifndef _PS8640_H_
+#define _PS8640_H_
+
+enum {
+ PAGE2_GPIO_L = 0xa6,
+ PAGE2_GPIO_H = 0xa7,
+ PAGE2_I2C_BYPASS = 0xea,
+ PS_GPIO9 = BIT(1),
+ I2C_BYPASS_EN = BIT(7),
+
+ PAGE3_SET_ADD = 0xfe,
+ PAGE3_SET_VAL = 0xff,
+ VDO_CTL_ADD = 0x13,
+ VDO_DIS = 0x18,
+ VDO_EN = 0x1c,
+};
+
+enum {
+ EDID_LENGTH = 128,
+ EDID_I2C_ADDR = 0x50,
+ EDID_EXTENSION_FLAG = 0x7e,
+};
+
+int ps8640_init(uint8_t bus, uint8_t chip);
+int ps8640_get_edid(uint8_t bus, uint8_t chip, struct edid *out);
+#endif
+
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