Merge branch 'u-boot-samsung/master' into 'u-boot-arm/master'

3 files changed, 220 insertions, 3 deletions

diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
index 2ff0ec2a42..637dd972a5 100644
--- a/drivers/mmc/s5p_sdhci.c
+++ b/drivers/mmc/s5p_sdhci.c
@@ -14,9 +14,7 @@
 #include <asm/arch/mmc.h>
 #include <asm/arch/clk.h>
 #include <errno.h>
-#ifdef CONFIG_OF_CONTROL
 #include <asm/arch/pinmux.h>
-#endif
 
 static char *S5P_NAME = "SAMSUNG SDHCI";
 static void s5p_sdhci_set_control_reg(struct sdhci_host *host)
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index a472f61f88..e7b07ebab4 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -11,7 +11,8 @@ obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
 obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
 obj-$(CONFIG_POWER_MAX77686) += pmic_max77686.o
 obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
-obj-$(CONFIG_POWER_TPS65090) += pmic_tps65090.o
+obj-$(CONFIG_POWER_TPS65090_I2C) += pmic_tps65090.o
+obj-$(CONFIG_POWER_TPS65090_EC) += pmic_tps65090_ec.o
 obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
 obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
 obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
diff --git a/drivers/power/pmic/pmic_tps65090_ec.c b/drivers/power/pmic/pmic_tps65090_ec.c
new file mode 100644
index 0000000000..ac0d44fec8
--- /dev/null
+++ b/drivers/power/pmic/pmic_tps65090_ec.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2013 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <cros_ec.h>
+#include <errno.h>
+#include <power/tps65090_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define TPS65090_ADDR		0x48
+
+static struct tps65090 {
+	struct cros_ec_dev *dev;		/* The CROS_EC device */
+} config;
+
+/* TPS65090 register addresses */
+enum {
+	REG_IRQ1 = 0,
+	REG_CG_CTRL0 = 4,
+	REG_CG_STATUS1 = 0xa,
+	REG_FET1_CTRL = 0x0f,
+	REG_FET2_CTRL,
+	REG_FET3_CTRL,
+	REG_FET4_CTRL,
+	REG_FET5_CTRL,
+	REG_FET6_CTRL,
+	REG_FET7_CTRL,
+	TPS65090_NUM_REGS,
+};
+
+enum {
+	IRQ1_VBATG = 1 << 3,
+	CG_CTRL0_ENC_MASK	= 0x01,
+
+	MAX_FET_NUM	= 7,
+	MAX_CTRL_READ_TRIES = 5,
+
+	/* TPS65090 FET_CTRL register values */
+	FET_CTRL_TOFET		= 1 << 7,  /* Timeout, startup, overload */
+	FET_CTRL_PGFET		= 1 << 4,  /* Power good for FET status */
+	FET_CTRL_WAIT		= 3 << 2,  /* Overcurrent timeout max */
+	FET_CTRL_ADENFET	= 1 << 1,  /* Enable output auto discharge */
+	FET_CTRL_ENFET		= 1 << 0,  /* Enable FET */
+};
+
+/**
+ * tps65090_read - read a byte from tps6090
+ *
+ * @param reg		The register address to read from.
+ * @param val		We'll return value value read here.
+ * @return 0 if ok; error if EC returns failure.
+ */
+static int tps65090_read(u32 reg, u8 *val)
+{
+	return cros_ec_i2c_xfer(config.dev, TPS65090_ADDR, reg, 1,
+				val, 1, true);
+}
+
+/**
+ * tps65090_write - write a byte to tps6090
+ *
+ * @param reg		The register address to write to.
+ * @param val		The value to write.
+ * @return 0 if ok; error if EC returns failure.
+ */
+static int tps65090_write(u32 reg, u8 val)
+{
+	return cros_ec_i2c_xfer(config.dev, TPS65090_ADDR, reg, 1,
+				&val, 1, false);
+}
+
+/**
+ * Checks for a valid FET number
+ *
+ * @param fet_id	FET number to check
+ * @return 0 if ok, -EINVAL if FET value is out of range
+ */
+static int tps65090_check_fet(unsigned int fet_id)
+{
+	if (fet_id == 0 || fet_id > MAX_FET_NUM) {
+		debug("parameter fet_id is out of range, %u not in 1 ~ %u\n",
+		      fet_id, MAX_FET_NUM);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * Set the power state for a FET
+ *
+ * @param fet_id	Fet number to set (1..MAX_FET_NUM)
+ * @param set		1 to power on FET, 0 to power off
+ * @return -EIO if we got a comms error, -EAGAIN if the FET failed to
+ * change state. If all is ok, returns 0.
+ */
+static int tps65090_fet_set(int fet_id, bool set)
+{
+	int retry;
+	u8 reg, value;
+
+	value = FET_CTRL_ADENFET | FET_CTRL_WAIT;
+	if (set)
+		value |= FET_CTRL_ENFET;
+
+	if (tps65090_write(REG_FET1_CTRL + fet_id - 1, value))
+		return -EIO;
+
+	/* Try reading until we get a result */
+	for (retry = 0; retry < MAX_CTRL_READ_TRIES; retry++) {
+		if (tps65090_read(REG_FET1_CTRL + fet_id - 1, &reg))
+			return -EIO;
+
+		/* Check that the fet went into the expected state */
+		if (!!(reg & FET_CTRL_PGFET) == set)
+			return 0;
+
+		/* If we got a timeout, there is no point in waiting longer */
+		if (reg & FET_CTRL_TOFET)
+			break;
+
+		mdelay(1);
+	}
+
+	debug("FET %d: Power good should have set to %d but reg=%#02x\n",
+	      fet_id, set, reg);
+	return -EAGAIN;
+}
+
+int tps65090_fet_enable(unsigned int fet_id)
+{
+	ulong start;
+	int loops;
+	int ret;
+
+	ret = tps65090_check_fet(fet_id);
+	if (ret)
+		return ret;
+
+	start = get_timer(0);
+	for (loops = 0;; loops++) {
+		ret = tps65090_fet_set(fet_id, true);
+		if (!ret)
+			break;
+
+		if (get_timer(start) > 100)
+			break;
+
+		/* Turn it off and try again until we time out */
+		tps65090_fet_set(fet_id, false);
+	}
+
+	if (ret) {
+		debug("%s: FET%d failed to power on: time=%lums, loops=%d\n",
+		      __func__, fet_id, get_timer(start), loops);
+	} else if (loops) {
+		debug("%s: FET%d powered on after %lums, loops=%d\n",
+		      __func__, fet_id, get_timer(start), loops);
+	}
+	/*
+	 * Unfortunately, there are some conditions where the power
+	 * good bit will be 0, but the fet still comes up. One such
+	 * case occurs with the lcd backlight. We'll just return 0 here
+	 * and assume that the fet will eventually come up.
+	 */
+	if (ret == -EAGAIN)
+		ret = 0;
+
+	return ret;
+}
+
+int tps65090_fet_disable(unsigned int fet_id)
+{
+	int ret;
+
+	ret = tps65090_check_fet(fet_id);
+	if (ret)
+		return ret;
+
+	ret = tps65090_fet_set(fet_id, false);
+
+	return ret;
+}
+
+int tps65090_fet_is_enabled(unsigned int fet_id)
+{
+	u8 reg = 0;
+	int ret;
+
+	ret = tps65090_check_fet(fet_id);
+	if (ret)
+		return ret;
+	ret = tps65090_read(REG_FET1_CTRL + fet_id - 1, &reg);
+	if (ret) {
+		debug("fail to read FET%u_CTRL register over I2C", fet_id);
+		return -EIO;
+	}
+
+	return reg & FET_CTRL_ENFET;
+}
+
+int tps65090_init(void)
+{
+	puts("TPS65090 PMIC EC init\n");
+
+	config.dev = board_get_cros_ec_dev();
+	if (!config.dev) {
+		debug("%s: no cros_ec device: cannot init tps65090\n",
+		      __func__);
+		return -ENODEV;
+	}
+
+	return 0;
+}