pmic: pmic_hi6553: Add a driver for the hi6553 pmic found on hikey board.

This adds a simple pmic driver for the hi6553 pmic which is used in
conjunction with the hi6220 SoC on the hikey board. Eventually this
driver will be updated to be a proper UCLASS PMIC driver which
can parse the voltages direct from device tree.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>

3 files changed, 213 insertions, 0 deletions

diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 25b3f92..99c5778 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -23,3 +23,4 @@ obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
 obj-$(CONFIG_POWER_TPS65218) += pmic_tps62362.o
 obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
 obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
+obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
diff --git a/drivers/power/pmic/pmic_hi6553.c b/drivers/power/pmic/pmic_hi6553.c
new file mode 100644
index 0000000..0af7987
--- /dev/null
+++ b/drivers/power/pmic/pmic_hi6553.c
@@ -0,0 +1,133 @@
+/*
+ *  Copyright (C) 2015 Linaro
+ *  Peter Griffin <peter.griffin@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <asm/io.h>
+#include <common.h>
+#include <power/pmic.h>
+#include <power/max8997_muic.h>
+#include <power/hi6553_pmic.h>
+#include <errno.h>
+
+u8 *pmussi_base;
+
+uint8_t hi6553_readb(u32 offset)
+{
+	return readb(pmussi_base + (offset << 2));
+}
+
+void hi6553_writeb(u32 offset, uint8_t value)
+{
+	writeb(value, pmussi_base + (offset << 2));
+}
+
+int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
+{
+	if (check_reg(p, reg))
+		return -1;
+
+	hi6553_writeb(reg, (uint8_t)val);
+
+	return 0;
+}
+
+int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
+{
+	if (check_reg(p, reg))
+		return -1;
+
+	*val = (u32)hi6553_readb(reg);
+
+	return 0;
+}
+
+static void hi6553_init(void)
+{
+	int data;
+
+	hi6553_writeb(HI6553_PERI_EN_MARK, 0x1e);
+	hi6553_writeb(HI6553_NP_REG_ADJ1, 0);
+	data = HI6553_DISABLE6_XO_CLK_CONN | HI6553_DISABLE6_XO_CLK_NFC |
+		HI6553_DISABLE6_XO_CLK_RF1 | HI6553_DISABLE6_XO_CLK_RF2;
+	hi6553_writeb(HI6553_DISABLE6_XO_CLK, data);
+
+	/* configure BUCK0 & BUCK1 */
+	hi6553_writeb(HI6553_BUCK01_CTRL2, 0x5e);
+	hi6553_writeb(HI6553_BUCK0_CTRL7, 0x10);
+	hi6553_writeb(HI6553_BUCK1_CTRL7, 0x10);
+	hi6553_writeb(HI6553_BUCK0_CTRL5, 0x1e);
+	hi6553_writeb(HI6553_BUCK1_CTRL5, 0x1e);
+	hi6553_writeb(HI6553_BUCK0_CTRL1, 0xfc);
+	hi6553_writeb(HI6553_BUCK1_CTRL1, 0xfc);
+
+	/* configure BUCK2 */
+	hi6553_writeb(HI6553_BUCK2_REG1, 0x4f);
+	hi6553_writeb(HI6553_BUCK2_REG5, 0x99);
+	hi6553_writeb(HI6553_BUCK2_REG6, 0x45);
+	mdelay(1);
+	hi6553_writeb(HI6553_VSET_BUCK2_ADJ, 0x22);
+	mdelay(1);
+
+	/* configure BUCK3 */
+	hi6553_writeb(HI6553_BUCK3_REG3, 0x02);
+	hi6553_writeb(HI6553_BUCK3_REG5, 0x99);
+	hi6553_writeb(HI6553_BUCK3_REG6, 0x41);
+	hi6553_writeb(HI6553_VSET_BUCK3_ADJ, 0x02);
+	mdelay(1);
+
+	/* configure BUCK4 */
+	hi6553_writeb(HI6553_BUCK4_REG2, 0x9a);
+	hi6553_writeb(HI6553_BUCK4_REG5, 0x99);
+	hi6553_writeb(HI6553_BUCK4_REG6, 0x45);
+
+	/* configure LDO20 */
+	hi6553_writeb(HI6553_LDO20_REG_ADJ, 0x50);
+
+	hi6553_writeb(HI6553_NP_REG_CHG, 0x0f);
+	hi6553_writeb(HI6553_CLK_TOP0, 0x06);
+	hi6553_writeb(HI6553_CLK_TOP3, 0xc0);
+	hi6553_writeb(HI6553_CLK_TOP4, 0x00);
+
+	/* configure LDO7 & LDO10 for SD slot */
+	data = hi6553_readb(HI6553_LDO7_REG_ADJ);
+	data = (data & 0xf8) | 0x2;
+	hi6553_writeb(HI6553_LDO7_REG_ADJ, data);
+	mdelay(5);
+	/* enable LDO7 */
+	hi6553_writeb(HI6553_ENABLE2_LDO1_8, 1 << 6);
+	mdelay(5);
+	data = hi6553_readb(HI6553_LDO10_REG_ADJ);
+	data = (data & 0xf8) | 0x5;
+	hi6553_writeb(HI6553_LDO10_REG_ADJ, data);
+	mdelay(5);
+	/* enable LDO10 */
+	hi6553_writeb(HI6553_ENABLE3_LDO9_16, 1 << 1);
+	mdelay(5);
+
+	/* select 32.764KHz */
+	hi6553_writeb(HI6553_CLK19M2_600_586_EN, 0x01);
+}
+
+int power_hi6553_init(u8 *base)
+{
+	static const char name[] = "HI6553 PMIC";
+	struct pmic *p = pmic_alloc();
+
+	if (!p) {
+		printf("%s: POWER allocation error!\n", __func__);
+		return -ENOMEM;
+	}
+
+	p->name = name;
+	p->interface = PMIC_NONE;
+	p->number_of_regs = 44;
+	pmussi_base = base;
+
+	hi6553_init();
+
+	puts("HI6553 PMIC init\n");
+
+	return 0;
+}
diff --git a/include/power/hi6553_pmic.h b/include/power/hi6553_pmic.h
new file mode 100644
index 0000000..fcd131a
--- /dev/null
+++ b/include/power/hi6553_pmic.h
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2015 Linaro
+ * Peter Griffin <peter.griffin@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __HI6553_PMIC_H__
+#define __HI6553_PMIC_H__
+
+/* Registers */
+enum {
+	HI6553_VERSION_REG = 0x000,
+	HI6553_ENABLE2_LDO1_8 = 0x029,
+	HI6553_DISABLE2_LDO1_8,
+	HI6553_ONOFF_STATUS2_LDO1_8,
+	HI6553_ENABLE3_LDO9_16,
+	HI6553_DISABLE3_LDO9_16,
+	HI6553_ONOFF_STATUS3_LDO9_16,
+
+	HI6553_DISABLE6_XO_CLK = 0x036,
+	HI6553_PERI_EN_MARK = 0x040,
+	HI6553_BUCK2_REG1 = 0x04a,
+	HI6553_BUCK2_REG5 = 0x04e,
+	HI6553_BUCK2_REG6,
+
+	HI6553_BUCK3_REG3 = 0x054,
+	HI6553_BUCK3_REG5 = 0x056,
+	HI6553_BUCK3_REG6,
+	HI6553_BUCK4_REG2 = 0x05b,
+	HI6553_BUCK4_REG5 = 0x05e,
+	HI6553_BUCK4_REG6,
+
+	HI6553_CLK_TOP0 = 0x063,
+	HI6553_CLK_TOP3 = 0x066,
+	HI6553_CLK_TOP4,
+	HI6553_VSET_BUCK2_ADJ = 0x06d,
+	HI6553_VSET_BUCK3_ADJ,
+	HI6553_LDO7_REG_ADJ = 0x078,
+	HI6553_LDO10_REG_ADJ = 0x07b,
+	HI6553_LDO19_REG_ADJ = 0x084,
+	HI6553_LDO20_REG_ADJ,
+	HI6553_DR_LED_CTRL = 0x098,
+	HI6553_DR_OUT_CTRL,
+	HI6553_DR3_ISET,
+	HI6553_DR3_START_DEL,
+	HI6553_DR4_ISET,
+	HI6553_DR4_START_DEL,
+	HI6553_DR345_TIM_CONF0 = 0x0a0,
+	HI6553_NP_REG_ADJ1 = 0x0be,
+	HI6553_NP_REG_CHG = 0x0c0,
+	HI6553_BUCK01_CTRL2 = 0x0d9,
+	HI6553_BUCK0_CTRL1 = 0x0dd,
+	HI6553_BUCK0_CTRL5 = 0x0e1,
+	HI6553_BUCK0_CTRL7 = 0x0e3,
+	HI6553_BUCK1_CTRL1 = 0x0e8,
+	HI6553_BUCK1_CTRL5 = 0x0ec,
+	HI6553_BUCK1_CTRL7 = 0x0ef,
+	HI6553_CLK19M2_600_586_EN = 0x0fe,
+};
+
+#define HI6553_DISABLE6_XO_CLK_BB		(1 << 0)
+#define HI6553_DISABLE6_XO_CLK_CONN		(1 << 1)
+#define HI6553_DISABLE6_XO_CLK_NFC		(1 << 2)
+#define HI6553_DISABLE6_XO_CLK_RF1		(1 << 3)
+#define HI6553_DISABLE6_XO_CLK_RF2		(1 << 4)
+
+#define HI6553_LED_START_DELAY_TIME		0x00
+#define HI6553_LED_ELEC_VALUE			0x07
+#define HI6553_LED_LIGHT_TIME			0xf0
+#define HI6553_LED_GREEN_ENABLE			(1 << 1)
+#define HI6553_LED_OUT_CTRL			0x00
+
+#define HI6553_PMU_V300				0x30
+#define HI6553_PMU_V310				0x31
+
+int power_hi6553_init(u8 *base);
+
+#endif	/* __HI6553_PMIC_H__ */