[coreboot-gerrit] New patch to review for coreboot: mediatek/mt8173: Add da9212 driver
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Thu Mar 17 15:15:49 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/14122
-gerrit
commit be3610303d273102f70f0c9f4a64d7a9e2e97d75
Author: henryc.chen <henryc.chen at mediatek.com>
Date: Wed Mar 2 15:51:44 2016 +0800
mediatek/mt8173: Add da9212 driver
Add secondary PMIC for external buck control on Oak rev0/1/2/5
BRANCH=none
BUG=none
TEST=verified on Oak rev4/rev5
Change-Id: Ia000b0c7d61e8396856656247f9627e33b21b19b
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: 241508e7d781fac8ee085ee81962043dd654c52d
Original-Change-Id: I6c75e2462363a5523bf1ebb03af7a36740293624
Original-Signed-off-by: henryc.chen <henryc.chen at mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/332342
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/soc/mediatek/mt8173/Makefile.inc | 1 +
src/soc/mediatek/mt8173/da9212.c | 100 +++++++++++++++++++++++++++
src/soc/mediatek/mt8173/include/soc/da9212.h | 89 ++++++++++++++++++++++++
3 files changed, 190 insertions(+)
diff --git a/src/soc/mediatek/mt8173/Makefile.inc b/src/soc/mediatek/mt8173/Makefile.inc
old mode 100755
new mode 100644
index 6ba533a..217cbc3
--- a/src/soc/mediatek/mt8173/Makefile.inc
+++ b/src/soc/mediatek/mt8173/Makefile.inc
@@ -67,6 +67,7 @@ ramstage-y += timer.c
ramstage-$(CONFIG_DRIVERS_UART) += uart.c
ramstage-y += pmic_wrap.c mt6391.c i2c.c
ramstage-y += mt6311.c
+ramstage-y += da9212.c
ramstage-y += gpio.c
ramstage-y += wdt.c
ramstage-y += pll.c
diff --git a/src/soc/mediatek/mt8173/da9212.c b/src/soc/mediatek/mt8173/da9212.c
new file mode 100644
index 0000000..7953d17
--- /dev/null
+++ b/src/soc/mediatek/mt8173/da9212.c
@@ -0,0 +1,100 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/i2c.h>
+#include <soc/da9212.h>
+
+enum {
+ DA9212_SLAVE_ADDR = 0x68,
+};
+
+static void da9212_hw_init(uint8_t i2c_num, unsigned char variant_id)
+{
+ int ret = 0;
+ int buck_mode = DA9212_BUCK_MODE_AUTO;
+
+ if (variant_id == DA9212_VARIANT_ID_AB)
+ buck_mode = DA9212_BUCK_MODE_PWM;
+
+ /* page select to 0 */
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_PAGE_CON, DA9212_REG_PAGE0,
+ DA9212_REG_PAGE_MASK, DA9212_REG_PAGE_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKA_CONT, DA9212_BUCK_GPI_GPIO1,
+ DA9212_BUCK_GPI_MASK, DA9212_BUCK_GPI_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKB_CONT, DA9212_BUCK_GPI_OFF,
+ DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKA_CONT, DA9212_VBUCK_SEL_A,
+ DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKB_CONT, DA9212_VBUCK_SEL_A,
+ DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKA_CONF, buck_mode,
+ DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
+
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_BUCKB_CONF, buck_mode,
+ DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
+
+ if (ret)
+ printk(BIOS_ERR, "ERROR: %s failed\n", __func__);
+
+}
+
+void da9212_probe(uint8_t i2c_num)
+{
+ int ret = 0;
+ unsigned char device_id = 0;
+ unsigned char variant_id = 0;
+
+
+ /* select to page 4, clear REVERT at first time */
+ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_PAGE_CON, DA9212_REG_PAGE4,
+ 0xF, DA9212_REG_PAGE_SHIFT);
+
+ ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_DEVICE_ID, &device_id,
+ 0xFF, 0);
+
+ ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
+ DA9212_REG_VARIANT_ID, &variant_id,
+ 0xFF, 0);
+
+ printk(BIOS_INFO, "%s: device ID = %#x, variant ID = %#x\n", __func__,
+ device_id, variant_id);
+
+ /* Check device ID is DA9212 */
+ if (device_id != DA9212_ID || ret) {
+ printk(BIOS_ERR, "ERROR: unknown DA9212 device_id\n");
+ return;
+ }
+
+ da9212_hw_init(i2c_num, variant_id);
+}
diff --git a/src/soc/mediatek/mt8173/include/soc/da9212.h b/src/soc/mediatek/mt8173/include/soc/da9212.h
new file mode 100644
index 0000000..359615c
--- /dev/null
+++ b/src/soc/mediatek/mt8173/include/soc/da9212.h
@@ -0,0 +1,89 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __SOC_DA9212_H_
+#define __SOC_DA9212_H_
+
+void da9212_probe(uint8_t i2c_num);
+
+enum {
+ /* Page selection */
+ DA9212_REG_PAGE_CON = 0x0,
+
+ /* Regulator Registers */
+ DA9212_REG_BUCKA_CONT = 0x5D,
+ DA9212_REG_BUCKB_CONT = 0x5E,
+ DA9212_REG_BUCKA_CONF = 0xD1,
+ DA9212_REG_BUCKB_CONF = 0xD2,
+};
+
+/* DA9212_REG_PAGE_CON (addr=0x0) */
+enum {
+ DA9212_REG_PAGE_SHIFT = 0,
+ DA9212_REG_PAGE_MASK = 0xf
+};
+
+enum {
+ DA9212_REG_PAGE0 = 0,
+ DA9212_REG_PAGE2 = 2,
+ DA9212_REG_PAGE4 = 4,
+ DA9212_PAGE_WRITE_MODE = 0x0,
+ DA9212_REPEAT_WRITE_MODE = 0x40,
+ DA9212_PAGE_REVERT = 0x80
+};
+
+/* DA9212_REG_BUCKA/B_CONT (addr=0x5D/0x5E) */
+enum {
+ DA9212_BUCK_EN_SHIFT = 0,
+ DA9212_BUCK_OFF = 0x0,
+ DA9212_BUCK_ON = 0x1,
+ DA9212_BUCK_GPI_SHIFT = 1,
+ DA9212_BUCK_GPI_MASK = 0x3,
+ DA9212_BUCK_GPI_OFF = 0x0,
+ DA9212_BUCK_GPI_GPIO0 = 0x1,
+ DA9212_BUCK_GPI_GPIO1 = 0x2,
+ DA9212_BUCK_GPI_GPIO4 = 0x3,
+ DA9212_VBUCK_SEL_SHIFT = 4,
+ DA9212_VBUCK_SEL_MASK = 0x1,
+ DA9212_VBUCK_SEL_A = 0x0,
+ DA9212_VBUCK_SEL_B = 0x1,
+};
+
+/* DA9212_REG_BUCKA/B_CONF (addr=0xD1/0xD2) */
+enum {
+ DA9212_BUCK_MODE_SHIFT = 0,
+ DA9212_BUCK_MODE_MASK = 0x3,
+ DA9212_BUCK_MODE_MANUAL = 0x0,
+ DA9212_BUCK_MODE_PFM = 0x1,
+ DA9212_BUCK_MODE_PWM = 0x2,
+ DA9212_BUCK_MODE_AUTO = 0x3,
+};
+
+/* DA9212_REG_CONFIG_E (addr=0x147) */
+enum {
+ /* DEVICE IDs */
+ DA9212_REG_DEVICE_ID = 0x1,
+ DA9212_ID = 0x22,
+ DA9213_ID = 0x23,
+ DA9212_REG_VARIANT_ID = 0x2,
+ DA9212_VARIANT_ID_AB = 0x10,
+ DA9212_VARIANT_ID_AC = 0x20
+};
+
+#endif
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