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-rw-r--r--arch/arm/mach-omap2/pmic-cpcap.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pmic-cpcap.c b/arch/arm/mach-omap2/pmic-cpcap.c
new file mode 100644
index 000000000000..eab281a5fc9f
--- /dev/null
+++ b/arch/arm/mach-omap2/pmic-cpcap.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * pmic-cpcap.c - CPCAP-specific functions for the OPP code
+ *
+ * Adapted from Motorola Mapphone Android Linux kernel
+ * Copyright (C) 2011 Motorola, Inc.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include "soc.h"
+#include "pm.h"
+#include "voltage.h"
+
+#include <linux/init.h>
+#include "vc.h"
+
+/**
+ * omap_cpcap_vsel_to_vdc - convert CPCAP VSEL value to microvolts DC
+ * @vsel: CPCAP VSEL value to convert
+ *
+ * Returns the microvolts DC that the CPCAP PMIC should generate when
+ * programmed with @vsel.
+ */
+static unsigned long omap_cpcap_vsel_to_uv(unsigned char vsel)
+{
+	if (vsel > 0x44)
+		vsel = 0x44;
+	return (((vsel * 125) + 6000)) * 100;
+}
+
+/**
+ * omap_cpcap_uv_to_vsel - convert microvolts DC to CPCAP VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the CPCAP PMIC to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+static unsigned char omap_cpcap_uv_to_vsel(unsigned long uv)
+{
+	if (uv < 600000)
+		uv = 600000;
+	else if (uv > 1450000)
+		uv = 1450000;
+	return DIV_ROUND_UP(uv - 600000, 12500);
+}
+
+static struct omap_voltdm_pmic omap_cpcap_core = {
+	.slew_rate = 4000,
+	.step_size = 12500,
+	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vddmin = 900000,
+	.vddmax = 1350000,
+	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr = 0x02,
+	.volt_reg_addr = 0x00,
+	.cmd_reg_addr = 0x01,
+	.i2c_high_speed = false,
+	.vsel_to_uv = omap_cpcap_vsel_to_uv,
+	.uv_to_vsel = omap_cpcap_uv_to_vsel,
+};
+
+static struct omap_voltdm_pmic omap_cpcap_iva = {
+	.slew_rate = 4000,
+	.step_size = 12500,
+	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vddmin = 900000,
+	.vddmax = 1350000,
+	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr = 0x44,
+	.volt_reg_addr = 0x0,
+	.cmd_reg_addr = 0x01,
+	.i2c_high_speed = false,
+	.vsel_to_uv = omap_cpcap_vsel_to_uv,
+	.uv_to_vsel = omap_cpcap_uv_to_vsel,
+};
+
+/**
+ * omap_max8952_vsel_to_vdc - convert MAX8952 VSEL value to microvolts DC
+ * @vsel: MAX8952 VSEL value to convert
+ *
+ * Returns the microvolts DC that the MAX8952 Regulator should generate when
+ * programmed with @vsel.
+ */
+static unsigned long omap_max8952_vsel_to_uv(unsigned char vsel)
+{
+	if (vsel > 0x3F)
+		vsel = 0x3F;
+	return (((vsel * 100) + 7700)) * 100;
+}
+
+/**
+ * omap_max8952_uv_to_vsel - convert microvolts DC to MAX8952 VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+static unsigned char omap_max8952_uv_to_vsel(unsigned long uv)
+{
+	if (uv < 770000)
+		uv = 770000;
+	else if (uv > 1400000)
+		uv = 1400000;
+	return DIV_ROUND_UP(uv - 770000, 10000);
+}
+
+static struct omap_voltdm_pmic omap443x_max8952_mpu = {
+	.slew_rate = 16000,
+	.step_size = 10000,
+	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vddmin = 900000,
+	.vddmax = 1400000,
+	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr = 0x60,
+	.volt_reg_addr = 0x03,
+	.cmd_reg_addr = 0x03,
+	.i2c_high_speed = false,
+	.vsel_to_uv = omap_max8952_vsel_to_uv,
+	.uv_to_vsel = omap_max8952_uv_to_vsel,
+};
+
+/**
+ * omap_fan5355_vsel_to_vdc - convert FAN535503 VSEL value to microvolts DC
+ * @vsel: FAN535503 VSEL value to convert
+ *
+ * Returns the microvolts DC that the FAN535503 Regulator should generate when
+ * programmed with @vsel.
+ */
+static unsigned long omap_fan535503_vsel_to_uv(unsigned char vsel)
+{
+	/* Extract bits[5:0] */
+	vsel &= 0x3F;
+
+	return (((vsel * 125) + 7500)) * 100;
+}
+
+/**
+ * omap_fan535508_vsel_to_vdc - convert FAN535508 VSEL value to microvolts DC
+ * @vsel: FAN535508 VSEL value to convert
+ *
+ * Returns the microvolts DC that the FAN535508 Regulator should generate when
+ * programmed with @vsel.
+ */
+static unsigned long omap_fan535508_vsel_to_uv(unsigned char vsel)
+{
+	/* Extract bits[5:0] */
+	vsel &= 0x3F;
+
+	if (vsel > 0x37)
+		vsel = 0x37;
+	return (((vsel * 125) + 7500)) * 100;
+}
+
+
+/**
+ * omap_fan535503_uv_to_vsel - convert microvolts DC to FAN535503 VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+static unsigned char omap_fan535503_uv_to_vsel(unsigned long uv)
+{
+	unsigned char vsel;
+	if (uv < 750000)
+		uv = 750000;
+	else if (uv > 1537500)
+		uv = 1537500;
+
+	vsel = DIV_ROUND_UP(uv - 750000, 12500);
+	return vsel | 0xC0;
+}
+
+/**
+ * omap_fan535508_uv_to_vsel - convert microvolts DC to FAN535508 VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+static unsigned char omap_fan535508_uv_to_vsel(unsigned long uv)
+{
+	unsigned char vsel;
+	if (uv < 750000)
+		uv = 750000;
+	else if (uv > 1437500)
+		uv = 1437500;
+
+	vsel = DIV_ROUND_UP(uv - 750000, 12500);
+	return vsel | 0xC0;
+}
+
+/* fan5335-core */
+static struct omap_voltdm_pmic omap4_fan_core = {
+	.slew_rate = 4000,
+	.step_size = 12500,
+	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vddmin = 850000,
+	.vddmax = 1375000,
+	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr = 0x4A,
+	.i2c_high_speed = false,
+	.volt_reg_addr = 0x01,
+	.cmd_reg_addr = 0x01,
+	.vsel_to_uv = omap_fan535508_vsel_to_uv,
+	.uv_to_vsel = omap_fan535508_uv_to_vsel,
+};
+
+/* fan5335 iva */
+static struct omap_voltdm_pmic omap4_fan_iva = {
+	.slew_rate = 4000,
+	.step_size = 12500,
+	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vddmin = 850000,
+	.vddmax = 1375000,
+	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr = 0x48,
+	.volt_reg_addr = 0x01,
+	.cmd_reg_addr = 0x01,
+	.i2c_high_speed = false,
+	.vsel_to_uv = omap_fan535503_vsel_to_uv,
+	.uv_to_vsel = omap_fan535503_uv_to_vsel,
+};
+
+int __init omap4_cpcap_init(void)
+{
+	struct voltagedomain *voltdm;
+
+	if (!of_find_compatible_node(NULL, NULL, "motorola,cpcap"))
+		return -ENODEV;
+
+	voltdm = voltdm_lookup("mpu");
+	omap_voltage_register_pmic(voltdm, &omap443x_max8952_mpu);
+
+	if (of_machine_is_compatible("motorola,droid-bionic")) {
+		voltdm = voltdm_lookup("mpu");
+		omap_voltage_register_pmic(voltdm, &omap_cpcap_core);
+
+		voltdm = voltdm_lookup("mpu");
+		omap_voltage_register_pmic(voltdm, &omap_cpcap_iva);
+	} else {
+		voltdm = voltdm_lookup("core");
+		omap_voltage_register_pmic(voltdm, &omap4_fan_core);
+
+		voltdm = voltdm_lookup("iva");
+		omap_voltage_register_pmic(voltdm, &omap4_fan_iva);
+	}
+
+	return 0;
+}
+
+static int __init cpcap_late_init(void)
+{
+	omap4_vc_set_pmic_signaling(PWRDM_POWER_RET);
+
+	return 0;
+}
+omap_late_initcall(cpcap_late_init);
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