[coreboot-gerrit] Change in coreboot[master]: mediatek/mt8183: Add AUXADC driver
Tristan Hsieh (Code Review)
gerrit at coreboot.org
Fri Oct 12 09:45:41 CEST 2018
Tristan Hsieh has uploaded this change for review. ( https://review.coreboot.org/29061
Change subject: mediatek/mt8183: Add AUXADC driver
......................................................................
mediatek/mt8183: Add AUXADC driver
We plan to get board id and ram code from AUXADC on Kukui. Add AUXADC
driver to support it.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui
Change-Id: I121a6a0240f9c517c0cbc07e0c18b09167849ff1
Signed-off-by: jg_poxu <jg_poxu at mediatek.com>
---
M src/soc/mediatek/mt8183/Makefile.inc
A src/soc/mediatek/mt8183/auxadc.c
M src/soc/mediatek/mt8183/include/soc/addressmap.h
A src/soc/mediatek/mt8183/include/soc/auxadc.h
4 files changed, 101 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/61/29061/1
diff --git a/src/soc/mediatek/mt8183/Makefile.inc b/src/soc/mediatek/mt8183/Makefile.inc
index 8fece79..01cf8ef 100644
--- a/src/soc/mediatek/mt8183/Makefile.inc
+++ b/src/soc/mediatek/mt8183/Makefile.inc
@@ -1,5 +1,6 @@
ifeq ($(CONFIG_SOC_MEDIATEK_MT8183),y)
+bootblock-y += auxadc.c
bootblock-y += bootblock.c
bootblock-y += ../common/gpio.c gpio.c
bootblock-y += ../common/pll.c pll.c
@@ -14,12 +15,14 @@
decompressor-y += ../common/mmu_operations.c
decompressor-y += ../common/timer.c
+verstage-y += auxadc.c
verstage-y += ../common/gpio.c gpio.c
verstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
verstage-y += ../common/timer.c
verstage-$(CONFIG_DRIVERS_UART) += ../common/uart.c
verstage-y += ../common/wdt.c
+romstage-y += auxadc.c
romstage-y += ../common/cbmem.c emi.c
romstage-y += ../common/gpio.c gpio.c
romstage-y += ../common/mmu_operations.c mmu_operations.c
@@ -28,6 +31,7 @@
romstage-$(CONFIG_DRIVERS_UART) += ../common/uart.c
romstage-y += ../common/wdt.c
+ramstage-y += auxadc.c
ramstage-y += ../common/cbmem.c emi.c
ramstage-y += ../common/gpio.c gpio.c
ramstage-y += ../common/mmu_operations.c mmu_operations.c
diff --git a/src/soc/mediatek/mt8183/auxadc.c b/src/soc/mediatek/mt8183/auxadc.c
new file mode 100644
index 0000000..e911be3
--- /dev/null
+++ b/src/soc/mediatek/mt8183/auxadc.c
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 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 <arch/io.h>
+#include <assert.h>
+#include <console/console.h>
+#include <delay.h>
+#include <soc/addressmap.h>
+#include <soc/auxadc.h>
+#include <soc/infracfg.h>
+
+static struct mtk_auxadc_regs *const mtk_auxadc = (void *)AUXADC_BASE;
+
+static uint32_t auxadc_get_rawdata(int channel)
+{
+ setbits_le32(&mt8183_infracfg->module_sw_cg_1_clr, 1 << 10);
+
+ int idle_timeout = 300;
+ while (read32(&mtk_auxadc->auxadc_con2) & 0x1) {
+ udelay(1000);
+ assert(--idle_timeout > 0);
+ }
+
+ clrbits_le32(&mtk_auxadc->auxadc_con1, 1 << channel);
+
+ int data_ready_timeout = 300;
+ while (0 != (read32(&mtk_auxadc->auxadc_data[channel]) & (1 << 12))) {
+ udelay(1000);
+ assert(--data_ready_timeout > 0);
+ }
+
+ setbits_le32(&mtk_auxadc->auxadc_con1, 1 << channel);
+ udelay(25);
+
+ while (0 == (read32(&mtk_auxadc->auxadc_data[channel]) & (1 << 12))) {
+ udelay(1000);
+ assert(--data_ready_timeout > 0);
+ }
+
+ uint32_t value = read32(&mtk_auxadc->auxadc_data[channel]) & 0x0FFF;
+
+ setbits_le32(&mt8183_infracfg->module_sw_cg_1_set, 1 << 10);
+
+ return value;
+}
+
+int auxadc_get_voltage(int channel)
+{
+ return (int)((int64_t)auxadc_get_rawdata(channel) * 1500000 / 4096);
+}
diff --git a/src/soc/mediatek/mt8183/include/soc/addressmap.h b/src/soc/mediatek/mt8183/include/soc/addressmap.h
index de7eb1f..f70f6b2 100644
--- a/src/soc/mediatek/mt8183/include/soc/addressmap.h
+++ b/src/soc/mediatek/mt8183/include/soc/addressmap.h
@@ -30,6 +30,7 @@
RGU_BASE = IO_PHYS + 0x00007000,
GPT_BASE = IO_PHYS + 0x00008000,
APMIXED_BASE = IO_PHYS + 0x0000C000,
+ AUXADC_BASE = IO_PHYS + 0x01001000,
UART0_BASE = IO_PHYS + 0x01002000,
SPI0_BASE = IO_PHYS + 0x0100A000,
SPI1_BASE = IO_PHYS + 0x01010000,
diff --git a/src/soc/mediatek/mt8183/include/soc/auxadc.h b/src/soc/mediatek/mt8183/include/soc/auxadc.h
new file mode 100644
index 0000000..601a6f1
--- /dev/null
+++ b/src/soc/mediatek/mt8183/include/soc/auxadc.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 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.
+ */
+
+#ifndef _MTK_ADC_H
+#define _MTK_ADC_H
+
+#include <stdint.h>
+
+typedef struct mtk_auxadc_regs {
+ uint32_t auxadc_con0;
+ uint32_t auxadc_con1;
+ uint32_t auxadc_con1_set;
+ uint32_t auxadc_con1_clr;
+ uint32_t auxadc_con2;
+ uint32_t auxadc_data[16];
+ uint32_t reserved[16];
+ uint32_t auxadc_misc;
+} mtk_auxadc_regs;
+
+/* This function voltage unit is uvolt */
+int auxadc_get_voltage(int channel);
+#endif
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I121a6a0240f9c517c0cbc07e0c18b09167849ff1
Gerrit-Change-Number: 29061
Gerrit-PatchSet: 1
Gerrit-Owner: Tristan Hsieh <tristan.shieh at mediatek.com>
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