GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <lib/mmio.h>
+
+#include <hi3660.h>
+#include "hikey960_private.h"
+
+#define ADC_ADCIN0				0
+#define ADC_ADCIN1				1
+#define ADC_ADCIN2				2
+
+#define HKADC_DATA_GRADE0			0
+#define HKADC_DATA_GRADE1			100
+#define HKADC_DATA_GRADE2			300
+#define HKADC_DATA_GRADE3			500
+#define HKADC_DATA_GRADE4			700
+#define HKADC_DATA_GRADE5			900
+#define HKADC_DATA_GRADE6			1100
+#define HKADC_DATA_GRADE7			1300
+#define HKADC_DATA_GRADE8			1500
+#define HKADC_DATA_GRADE9			1700
+#define HKADC_DATA_GRADE10			1800
+
+#define BOARDID_VALUE0				0
+#define BOARDID_VALUE1				1
+#define BOARDID_VALUE2				2
+#define BOARDID_VALUE3				3
+#define BOARDID_VALUE4				4
+#define BOARDID_VALUE5				5
+#define BOARDID_VALUE6				6
+#define BOARDID_VALUE7				7
+#define BOARDID_VALUE8				8
+#define BOARDID_VALUE9				9
+#define BOARDID_UNKNOWN				0xF
+
+#define BOARDID3_BASE				5
+
+
+static void init_adc(void)
+{
+	/* reset hkadc */
+	mmio_write_32(CRG_PERRSTEN2_REG, PERRSTEN2_HKADCSSI);
+	/* wait a few clock cycles */
+	udelay(2);
+	mmio_write_32(CRG_PERRSTDIS2_REG, PERRSTEN2_HKADCSSI);
+	udelay(2);
+	/* enable hkadc clock */
+	mmio_write_32(CRG_PERDIS2_REG, PEREN2_HKADCSSI);
+	udelay(2);
+	mmio_write_32(CRG_PEREN2_REG, PEREN2_HKADCSSI);
+	udelay(2);
+}
+
+static int get_adc(unsigned int channel, unsigned int *value)
+{
+	unsigned int	data, value1, value0;
+
+	if (channel > HKADC_CHANNEL_MAX) {
+		WARN("invalid channel:%d\n", channel);
+		return -EFAULT;
+	}
+	/* configure the read/write operation for external HKADC */
+	mmio_write_32(HKADC_WR01_DATA_REG, HKADC_WR01_VALUE | channel);
+	mmio_write_32(HKADC_WR23_DATA_REG, HKADC_WR23_VALUE);
+	mmio_write_32(HKADC_WR45_DATA_REG, HKADC_WR45_VALUE);
+	/* configure the number of accessing registers */
+	mmio_write_32(HKADC_WR_NUM_REG, HKADC_WR_NUM_VALUE);
+	/* configure delay of accessing registers */
+	mmio_write_32(HKADC_DELAY01_REG, HKADC_CHANNEL0_DELAY01_VALUE);
+	mmio_write_32(HKADC_DELAY23_REG, HKADC_DELAY23_VALUE);
+
+	/* start HKADC */
+	mmio_write_32(HKADC_DSP_START_REG, 1);
+	do {
+		data = mmio_read_32(HKADC_DSP_START_REG);
+	} while (data & 1);
+
+	/* convert AD result */
+	value1 = mmio_read_32(HKADC_DSP_RD2_DATA_REG) & 0xffff;
+	value0 = mmio_read_32(HKADC_DSP_RD3_DATA_REG) & 0xffff;
+
+	data = ((value1 << 4) & HKADC_VALUE_HIGH) |
+	       ((value0 >> 4) & HKADC_VALUE_LOW);
+	*value = data;
+	return 0;
+}
+
+static int get_value(unsigned int channel, unsigned int *value)
+{
+	int ret;
+
+	ret = get_adc(channel, value);
+	if (ret)
+		return ret;
+
+	/* convert ADC value to micro-volt */
+	ret = ((*value & HKADC_VALID_VALUE) * HKADC_VREF_1V8) / HKADC_ACCURACY;
+	*value = ret;
+	return 0;
+}
+
+static int adcin_data_remap(unsigned int adcin_value)
+{
+	int	ret;
+
+	if (adcin_value < HKADC_DATA_GRADE1)
+		ret = BOARDID_VALUE0;
+	else if (adcin_value < HKADC_DATA_GRADE2)
+		ret = BOARDID_VALUE1;
+	else if (adcin_value < HKADC_DATA_GRADE3)
+		ret = BOARDID_VALUE2;
+	else if (adcin_value < HKADC_DATA_GRADE4)
+		ret = BOARDID_VALUE3;
+	else if (adcin_value < HKADC_DATA_GRADE5)
+		ret = BOARDID_VALUE4;
+	else if (adcin_value < HKADC_DATA_GRADE6)
+		ret = BOARDID_VALUE5;
+	else if (adcin_value < HKADC_DATA_GRADE7)
+		ret = BOARDID_VALUE6;
+	else if (adcin_value < HKADC_DATA_GRADE8)
+		ret = BOARDID_VALUE7;
+	else if (adcin_value < HKADC_DATA_GRADE9)
+		ret = BOARDID_VALUE8;
+	else if (adcin_value < HKADC_DATA_GRADE10)
+		ret = BOARDID_VALUE9;
+	else
+		ret = BOARDID_UNKNOWN;
+	return ret;
+}
+
+int hikey960_read_boardid(unsigned int *id)
+{
+	unsigned int	adcin0, adcin1, adcin2;
+	unsigned int	adcin0_remap, adcin1_remap, adcin2_remap;
+
+	assert(id != NULL);
+
+	init_adc();
+
+	/* read ADC channel0 data */
+	get_value(ADC_ADCIN0, &adcin0);
+	adcin0_remap = adcin_data_remap(adcin0);
+	if (adcin0_remap == BOARDID_UNKNOWN)
+		return -EINVAL;
+	/* read ADC channel1 data */
+	get_value(ADC_ADCIN1, &adcin1);
+	adcin1_remap = adcin_data_remap(adcin1);
+	if (adcin1_remap == BOARDID_UNKNOWN)
+		return -EINVAL;
+	/* read ADC channel2 data */
+	get_value(ADC_ADCIN2, &adcin2);
+	adcin2_remap = adcin_data_remap(adcin2);
+	if (adcin2_remap == BOARDID_UNKNOWN)
+		return -EINVAL;
+	*id = BOARDID3_BASE * 1000 + (adcin2_remap * 100) +
+		(adcin1_remap * 10) + adcin0_remap;
+	return 0;
+}