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

source/bootloader/u-boot-2020.01/drivers/power/palmas.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2012-2013
+ * Texas Instruments, <www.ti.com>
+ */
+#include <config.h>
+#include <palmas.h>
+
+void palmas_init_settings(void)
+{
+#ifdef CONFIG_PALMAS_SMPS7_FPWM
+	int err;
+	/*
+	 * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
+	 * forced PWM mode. This reduces noise (but affects efficiency).
+	 */
+	u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
+	if (err)
+		printf("palmas: could not force PWM for SMPS7: err = %d\n",
+		       err);
+#endif
+}
+
+#if defined(CONFIG_OMAP54XX)
+int lp873x_mmc1_poweron_ldo(uint voltage)
+{
+	if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE,
+				voltage)) {
+		printf("lp873x: could not set LDO1 voltage.\n");
+		return 1;
+	}
+	/* TURN ON LDO1 */
+	if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL,
+				LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) {
+		printf("lp873x: could not turn on LDO1.\n");
+		return 1;
+	}
+	return 0;
+
+}
+#endif
+
+int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage)
+{
+	u8 val = 0;
+
+#if defined(CONFIG_DRA7XX)
+	int ret;
+
+	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_volt, voltage);
+	if (ret) {
+		printf("tps65903x: could not set LDO1 voltage.\n");
+		return ret;
+	}
+	/* TURN ON LDO1 */
+	val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
+	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_ctrl, val);
+	if (ret) {
+		printf("tps65903x: could not turn on LDO1.\n");
+		return ret;
+	}
+	return 0;
+#else
+	/*
+	 * We assume that this is a OMAP543X + TWL603X board:
+	 * Set TWL6035/37 LDO9 to 3.0 V
+	 */
+	val = LDO_VOLT_3V0;
+	return twl603x_mmc1_set_ldo9(val);
+#endif
+}
+
+/*
+ * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
+ * powered by an external 3.3 V regulator, while the output of LDO9
+ * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
+ * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
+ */
+int twl603x_mmc1_set_ldo9(u8 vsel)
+{
+	u8 cval = 0, vval = 0;	/* Off by default */
+	int err;
+
+	if (vsel) {
+		/* Turn on */
+		if (vsel > LDO_VOLT_3V3) {
+			/* Put LDO9 in bypass */
+			cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
+			vval = LDO_VOLT_3V3;
+		} else {
+			cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
+			vval = vsel & 0x3f;
+		}
+	}
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
+	if (err) {
+		printf("twl603x: could not set LDO9 %s: err = %d\n",
+		       vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
+		return err;
+	}
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
+	if (err)
+		printf("twl603x: could not turn %s LDO9: err = %d\n",
+		       cval ? "on" : "off", err);
+	return err;
+}
+
+#ifdef CONFIG_PALMAS_AUDPWR
+/*
+ * Turn audio codec power and 32 kHz clock on/off. Use for
+ * testing OMAP543X + TWL603X + TWL604X boards only.
+ */
+int twl603x_audio_power(u8 on)
+{
+	u8 cval = 0, vval = 0, c32k = 0;
+	int err;
+
+	if (on) {
+		vval = SMPS_VOLT_2V1;
+		cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
+		c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
+	}
+	/* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
+	if (err) {
+		printf("twl603x: could not set SMPS9 voltage: err = %d\n",
+		       err);
+		return err;
+	}
+	/* Turn on or off SMPS9 */
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
+	if (err) {
+		printf("twl603x: could not turn SMPS9 %s: err = %d\n",
+		       cval ? "on" : "off", err);
+		return err;
+	}
+	/* Output 32 kHz clock on or off */
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
+	if (err)
+		printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n",
+		       c32k ? "on" : "off", err);
+	return err;
+}
+#endif
+
+#ifdef CONFIG_PALMAS_USB_SS_PWR
+/**
+ * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations
+ * for the USB Super speed SMPS10 regulator.
+ *
+ * @return 0
+ */
+int palmas_enable_ss_ldo(void)
+{
+	/* Enable smps10 regulator  */
+	return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL,
+				SMPS10_MODE_ACTIVE_D);
+}
+#endif
+
+/*
+ * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
+ * Please use defined BB_xxx values.
+ */
+int twl603x_enable_bb_charge(u8 bb_fields)
+{
+	u8 val = bb_fields & 0x0f;
+	int err;
+
+	val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
+	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
+	if (err)
+		printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n",
+		       val, err);
+	return err;
+}
+
+#ifdef CONFIG_DM_I2C
+int palmas_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_write(dev, reg, val);
+	if (ret) {
+		pr_err("writing to palmas failed. ret %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_read(dev, reg);
+	if (ret < 0) {
+		pr_err("reading from palmas failed. ret %d\n", ret);
+		return ret;
+	}
+	*valp = (u8)ret;
+	return 0;
+}
+#endif