Add sanity, flexibility and readability to TPS65217 driver. In preparation to
add envsys support.
This commit is contained in:
rkujawa
parent
9332c51671
commit
31c475759f
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@ -1,4 +1,4 @@
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/* $NetBSD: tps65217pmic.c,v 1.1 2013/04/25 20:55:34 rkujawa Exp $ */
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/* $NetBSD: tps65217pmic.c,v 1.2 2013/04/26 15:31:03 rkujawa Exp $ */
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/*-
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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@ -29,8 +29,13 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Texas Instruments TPS65217 Power Management IC driver.
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* TODO: battery, sequencer
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tps65217pmic.c,v 1.1 2013/04/25 20:55:34 rkujawa Exp $");
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__KERNEL_RCSID(0, "$NetBSD: tps65217pmic.c,v 1.2 2013/04/26 15:31:03 rkujawa Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -52,23 +57,10 @@ struct tps65217pmic_softc {
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uint8_t sc_revision;
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};
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static int tps65217pmic_match(device_t, cfdata_t, void *);
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static void tps65217pmic_attach(device_t, device_t, void *);
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static uint8_t tps65217pmic_reg_read(struct tps65217pmic_softc *sc,
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uint8_t reg);
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static uint16_t tps65217pmic_ppath_max_usb_current(uint8_t ppath);
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static uint16_t tps65217pmic_ppath_max_ac_current(uint8_t ppath);
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static void tps65217pmic_print_status(struct tps65217pmic_softc *sc);
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static void tps65217pmic_version(struct tps65217pmic_softc *sc);
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CFATTACH_DECL_NEW(tps65217pmic, sizeof (struct tps65217pmic_softc),
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tps65217pmic_match, tps65217pmic_attach, NULL, NULL);
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#define NTPS_REG 7
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/* Voltage regulators */
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enum tpsreg {
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enum tps_reg_num {
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TPS65217PMIC_LDO1,
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TPS65217PMIC_LDO2,
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TPS65217PMIC_LDO3LS,
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@ -78,6 +70,62 @@ enum tpsreg {
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TPS65217PMIC_DCDC3
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};
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struct tps_reg_param {
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/* parameters configured statically */
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const char* name;
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uint16_t voltage_min; /* in mV */
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uint16_t voltage_max; /* in mV */
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const uint16_t *voltages; /* all possible voltage settings */
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uint8_t nvoltages; /* number of voltage settings */
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bool can_track; /* regulator can track U of other r. */
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struct tps_reg_param *tracked_reg; /* ptr to tracked regulator */
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bool can_xadj; /* voltage can be adjusted externally */
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bool can_ls; /* can be a load switch instead of r. */
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uint8_t defreg_num; /* DEF register */
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uint8_t enable_bit; /* position in ENABLE register */
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/*
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* Run-time parameters configured during attachment and later, these
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* probably should be split into separate struct that would be a part
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* of softc. But since we can have only one TPS chip, that should be
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* okay for now.
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*/
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bool is_enabled; /* regulator is enabled */
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bool is_pg; /* regulator is "power good" */
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bool is_tracking; /* voltage is tracking other reg. */
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bool is_ls; /* is a load switch */
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bool is_xadj; /* voltage is adjusted externally */
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uint16_t current_voltage; /* in mV */
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};
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static int tps65217pmic_match(device_t, cfdata_t, void *);
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static void tps65217pmic_attach(device_t, device_t, void *);
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static uint8_t tps65217pmic_reg_read(struct tps65217pmic_softc *sc,
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uint8_t regno);
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static void tps65217pmic_refresh(struct tps65217pmic_softc *sc);
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static uint16_t tps65217pmic_ppath_max_usb_current(uint8_t ppath);
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static uint16_t tps65217pmic_ppath_max_ac_current(uint8_t ppath);
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static void tps65217pmic_regulator_read_config(struct tps65217pmic_softc
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*sc, struct tps_reg_param *regulator);
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static void tps65217pmic_print_ppath(struct tps65217pmic_softc *sc);
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static void tps65217pmic_print_ldos(struct tps65217pmic_softc *sc);
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static void tps65217pmic_version(struct tps65217pmic_softc *sc);
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CFATTACH_DECL_NEW(tps65217pmic, sizeof (struct tps65217pmic_softc),
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tps65217pmic_match, tps65217pmic_attach, NULL, NULL);
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/* Possible settings of LDO1 in mV. */
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static const uint16_t ldo1voltages[] = { 1000, 1100, 1200, 1250, 1300, 1350,
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1400, 1500, 1600, 1800, 2500, 2750, 2800, 3000, 3100, 3300 };
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@ -90,17 +138,120 @@ static const uint16_t ldo2voltages[] = { 900, 925, 950, 975, 1000, 1025, 1050,
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3200, 3300, 3300, 3300, 3300, 3300, 3300, 3300, 3300 };
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/* Possible settings of LDO3, LDO4 in mV. */
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static const uint16_t ldo3voltages[] = { 1500, 1550, 1600, 1650, 1700, 1750,
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1800, 1850,1900, 2000, 2100, 2200, 2300, 2400, 2450, 2500,2550, 2600,
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1800, 1850, 1900, 2000, 2100, 2200, 2300, 2400, 2450, 2500, 2550, 2600,
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2650, 2700, 2750, 2800, 2850, 2900,2950, 3000, 3050, 3100, 3150, 3200,
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3250, 3300 };
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static struct tps_reg_param tps_regulators[] = {
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{
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.name = "LDO1",
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.voltage_min = 1000,
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.voltage_max = 3300,
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.voltages = ldo1voltages,
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.nvoltages = 16,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = false,
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.can_ls = false,
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.defreg_num = TPS65217PMIC_DEFLDO1,
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.enable_bit = TPS65217PMIC_ENABLE_LDO1
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},
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{
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.name = "LDO2",
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.voltage_min = 900,
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.voltage_max = 3300,
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.voltages = ldo2voltages,
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.nvoltages = 64,
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.can_track = true,
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.tracked_reg = &(tps_regulators[TPS65217PMIC_DCDC3]),
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.can_xadj = false,
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.can_ls = false,
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.defreg_num = TPS65217PMIC_DEFLDO2,
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.enable_bit = TPS65217PMIC_ENABLE_LDO2
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},
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{
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.name = "LDO3",
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.voltage_min = 1500,
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.voltage_max = 3300,
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.voltages = ldo3voltages,
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.nvoltages = 32,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = false,
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.can_ls = true,
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.defreg_num = TPS65217PMIC_DEFLDO3,
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.enable_bit = TPS65217PMIC_ENABLE_LDO3
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},
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{
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.name = "LDO4",
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.voltage_min = 1500,
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.voltage_max = 3300,
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.voltages = ldo3voltages,
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.nvoltages = 32,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = false,
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.can_ls = true,
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.defreg_num = TPS65217PMIC_DEFLDO4,
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.enable_bit = TPS65217PMIC_ENABLE_LDO4
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},
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{
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.name = "DCDC1",
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.voltage_min = 900,
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.voltage_max = 3300,
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.voltages = ldo2voltages,
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.nvoltages = 64,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = true,
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.can_ls = false,
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.defreg_num = TPS65217PMIC_DEFDCDC1,
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.enable_bit = TPS65217PMIC_ENABLE_DCDC1
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},
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{
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.name = "DCDC2",
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.voltage_min = 900,
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.voltage_max = 3300,
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.voltages = ldo2voltages,
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.nvoltages = 64,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = true,
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.can_ls = false,
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.defreg_num = TPS65217PMIC_DEFDCDC2,
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.enable_bit = TPS65217PMIC_ENABLE_DCDC2
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},
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{
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.name = "DCDC3",
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.voltage_min = 900,
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.voltage_max = 3300,
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.voltages = ldo2voltages,
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.nvoltages = 64,
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.can_track = false,
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.tracked_reg = NULL,
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.can_xadj = true,
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.can_ls = false,
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.defreg_num = TPS65217PMIC_DEFDCDC3,
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.enable_bit = TPS65217PMIC_ENABLE_DCDC3
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}
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};
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static bool matched = false;
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static int
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tps65217pmic_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct i2c_attach_args *ia = aux;
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if (ia->ia_addr == TPS65217PMIC_ADDR)
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if (ia->ia_addr == TPS65217PMIC_ADDR) {
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/* we can only have one */
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if (matched)
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return 0;
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else
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matched = true;
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return 1;
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}
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return 0;
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}
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@ -138,7 +289,22 @@ tps65217pmic_attach(device_t parent, device_t self, void *aux)
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aprint_normal(" Power Management Multi-Channel IC (rev 1.%d)\n",
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sc->sc_revision);
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tps65217pmic_print_status(sc);
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tps65217pmic_refresh(sc);
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tps65217pmic_print_ppath(sc);
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tps65217pmic_print_ldos(sc);
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}
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static void
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tps65217pmic_refresh(struct tps65217pmic_softc *sc)
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{
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int i;
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struct tps_reg_param *c_reg;
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for (i = 0; i < NTPS_REG; i++) {
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c_reg = &tps_regulators[i];
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tps65217pmic_regulator_read_config(sc, c_reg);
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}
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}
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/* Get version and revision of the chip. */
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@ -186,56 +352,100 @@ tps65217pmic_ppath_max_usb_current(uint8_t ppath)
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return 0;
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}
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static uint16_t
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tps65217pmic_regulator_voltage(struct tps65217pmic_softc *sc, uint8_t regulator)
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/* Read regulator state and save it to tps_reg_param. */
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static void
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tps65217pmic_regulator_read_config(struct tps65217pmic_softc *sc, struct
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tps_reg_param *regulator)
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{
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uint8_t defreg;
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uint8_t defreg, regenable;
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uint16_t voltage;
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switch (regulator) {
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case TPS65217PMIC_LDO1:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO1);
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return ldo1voltages[defreg];
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case TPS65217PMIC_LDO2:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO2);
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if (defreg & TPS65217PMIC_DEFLDO2_TRACKING)
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return tps65217pmic_regulator_voltage(sc,
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TPS65217PMIC_DCDC3);
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return ldo2voltages[defreg & TPS65217PMIC_DEFLDO2_VOLTAGE];
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case TPS65217PMIC_LDO3LS:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO3);
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if (!(defreg & TPS65217PMIC_DEFLDOX_LS))
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return 0;
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return ldo3voltages[defreg & TPS65217PMIC_DEFLDO3_VOLTAGE];
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case TPS65217PMIC_LDO4LS:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO4);
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if (!(defreg & TPS65217PMIC_DEFLDOX_LS))
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return 0;
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return ldo3voltages[defreg & TPS65217PMIC_DEFLDO4_VOLTAGE];
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case TPS65217PMIC_DCDC1:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFDCDC1);
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/* if (defreg & TPS65217PMIC_DEFDCDCX_XADJ) XXX */
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return ldo2voltages[defreg & TPS65217PMIC_DEFDCDCX_VOLTAGE];
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case TPS65217PMIC_DCDC2:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFDCDC2);
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/* if (defreg & TPS65217PMIC_DEFDCDCX_XADJ) XXX */
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return ldo2voltages[defreg & TPS65217PMIC_DEFDCDCX_VOLTAGE];
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case TPS65217PMIC_DCDC3:
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defreg = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFDCDC3);
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/* if (defreg & TPS65217PMIC_DEFDCDCX_XADJ) XXX */
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return ldo2voltages[defreg & TPS65217PMIC_DEFDCDCX_VOLTAGE];
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regenable = tps65217pmic_reg_read(sc, TPS65217PMIC_ENABLE);
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if (regenable & (regulator->enable_bit))
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regulator->is_enabled = true;
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else {
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regulator->is_enabled = false;
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return;
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}
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defreg = tps65217pmic_reg_read(sc,
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regulator->defreg_num);
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switch (regulator->nvoltages) {
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case 16:
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voltage = regulator->voltages[defreg &
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TPS65217PMIC_DEFX_VOLTAGE_16];
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break;
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case 32:
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voltage = regulator->voltages[defreg &
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TPS65217PMIC_DEFX_VOLTAGE_32];
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break;
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case 64:
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voltage = regulator->voltages[defreg &
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TPS65217PMIC_DEFX_VOLTAGE_64];
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break;
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default:
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aprint_error_dev(sc->sc_dev, "unknown regulator %x", regulator);
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/* unsupported number of voltage settings? */
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voltage = 0;
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break;
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}
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return 0;
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/* Handle regulator tracking other regulator voltage. */
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if (regulator->can_track)
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if (defreg & TPS65217PMIC_DEFX_TRACKING) {
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regulator->is_tracking = true;
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voltage = 0; /* see regulator->tracked_reg */
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}
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/* Handle regulator configured into load switch mode. */
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if (regulator->can_ls)
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if (!(defreg & TPS65217PMIC_DEFX_LS)) {
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regulator->is_ls = true;
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voltage = 0;
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}
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if (regulator->can_xadj)
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if (defreg & TPS65217PMIC_DEFX_XADJ) {
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regulator->is_xadj = true;
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voltage = 0;
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}
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/* TODO: add PGOOD checking */
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regulator->current_voltage = voltage;
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}
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static void
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tps65217pmic_print_ldos(struct tps65217pmic_softc *sc)
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{
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int i;
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struct tps_reg_param *c_reg;
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aprint_normal_dev(sc->sc_dev, "");
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for (i = 0; i < NTPS_REG; i++) {
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c_reg = &tps_regulators[i];
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if(c_reg->is_enabled) {
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if (c_reg->is_ls) {
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aprint_normal("[%s: LS] ", c_reg->name);
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} else if (c_reg->is_xadj) {
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aprint_normal("[%s: XADJ] ", c_reg->name);
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} else
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aprint_normal("[%s: %d mV] ", c_reg->name,
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c_reg->current_voltage);
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}
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}
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aprint_normal("\n");
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}
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static void
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tps65217pmic_print_status(struct tps65217pmic_softc *sc)
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tps65217pmic_print_ppath(struct tps65217pmic_softc *sc)
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{
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uint8_t status, ppath, regenable;
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bool ldols;
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ppath = tps65217pmic_reg_read(sc, TPS65217PMIC_PPATH);
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status = tps65217pmic_reg_read(sc, TPS65217PMIC_STATUS);
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@ -263,50 +473,6 @@ tps65217pmic_print_status(struct tps65217pmic_softc *sc)
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aprint_normal("\n");
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aprint_normal_dev(sc->sc_dev, "");
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if(regenable & TPS65217PMIC_ENABLE_LDO1)
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aprint_normal("[LDO1: %d mV] ",
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tps65217pmic_regulator_voltage(sc, TPS65217PMIC_LDO1));
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if(regenable & TPS65217PMIC_ENABLE_LDO2)
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aprint_normal("[LDO2: %d mV] ",
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tps65217pmic_regulator_voltage(sc, TPS65217PMIC_LDO2));
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if(regenable & TPS65217PMIC_ENABLE_LDO3) {
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ldols = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO3) &
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TPS65217PMIC_DEFLDOX_LS;
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if (!ldols)
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aprint_normal("[LDO3: LS] ");
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else
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aprint_normal("[LDO3: %d mV] ",
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tps65217pmic_regulator_voltage(sc,
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TPS65217PMIC_LDO3LS));
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}
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if(regenable & TPS65217PMIC_ENABLE_LDO4) {
|
||||
ldols = tps65217pmic_reg_read(sc, TPS65217PMIC_DEFLDO4) &
|
||||
TPS65217PMIC_DEFLDOX_LS;
|
||||
if (!ldols)
|
||||
aprint_normal("[LDO4: LS]");
|
||||
else
|
||||
aprint_normal("[LDO4: %d mV] ",
|
||||
tps65217pmic_regulator_voltage(sc,
|
||||
TPS65217PMIC_LDO4LS));
|
||||
}
|
||||
|
||||
if(regenable & TPS65217PMIC_ENABLE_DCDC1)
|
||||
aprint_normal("[DCDC1: %d mV] ",
|
||||
tps65217pmic_regulator_voltage(sc, TPS65217PMIC_DCDC1));
|
||||
|
||||
if(regenable & TPS65217PMIC_ENABLE_DCDC2)
|
||||
aprint_normal("[DCDC2: %d mV] ",
|
||||
tps65217pmic_regulator_voltage(sc, TPS65217PMIC_DCDC2));
|
||||
|
||||
if(regenable & TPS65217PMIC_ENABLE_DCDC3)
|
||||
aprint_normal("[DCDC3: %d mV] ",
|
||||
tps65217pmic_regulator_voltage(sc, TPS65217PMIC_DCDC3));
|
||||
|
||||
aprint_normal("\n");
|
||||
}
|
||||
|
||||
static uint8_t
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: tps65217pmicreg.h,v 1.1 2013/04/25 20:55:34 rkujawa Exp $ */
|
||||
/* $NetBSD: tps65217pmicreg.h,v 1.2 2013/04/26 15:31:05 rkujawa Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2013 The NetBSD Foundation, Inc.
|
||||
|
|
@ -72,26 +72,20 @@
|
|||
#define TPS65217PMIC_PGOOD_LDO1PG __BIT(5)
|
||||
#define TPS65217PMIC_PGOOD_LDO2PG __BIT(6)
|
||||
|
||||
#define TPS65217PMIC_DEFLDO1 0x12
|
||||
#define TPS65217PMIC_DEFLDO2 0x13
|
||||
#define TPS65217PMIC_DEFLDO3 0x14
|
||||
#define TPS65217PMIC_DEFLDO4 0x15
|
||||
#define TPS65217PMIC_DEFDCDC1 0x0E
|
||||
#define TPS65217PMIC_DEFDCDC2 0x0F
|
||||
#define TPS65217PMIC_DEFDCDC3 0x10
|
||||
|
||||
#define TPS65217PMIC_DEFDCDCX_VOLTAGE __BITS(0,5)
|
||||
#define TPS65217PMIC_DEFDCDCX_XADJ __BIT(7)
|
||||
|
||||
#define TPS65217PMIC_DEFLDO1 0x12
|
||||
|
||||
#define TPS65217PMIC_DEFLDO2 0x13
|
||||
#define TPS65217PMIC_DEFLDO2_VOLTAGE __BITS(0,5)
|
||||
#define TPS65217PMIC_DEFLDO2_TRACKING __BIT(6)
|
||||
|
||||
#define TPS65217PMIC_DEFLDO3 0x14
|
||||
#define TPS65217PMIC_DEFLDO3_VOLTAGE __BITS(0,4)
|
||||
|
||||
#define TPS65217PMIC_DEFLDO4 0x15
|
||||
#define TPS65217PMIC_DEFLDO4_VOLTAGE __BITS(0,4)
|
||||
|
||||
#define TPS65217PMIC_DEFLDOX_LS __BIT(5) /* LDO 3, 4 */
|
||||
#define TPS65217PMIC_DEFX_VOLTAGE_16 __BITS(0,3)
|
||||
#define TPS65217PMIC_DEFX_VOLTAGE_32 __BITS(0,4)
|
||||
#define TPS65217PMIC_DEFX_VOLTAGE_64 __BITS(0,5)
|
||||
#define TPS65217PMIC_DEFX_TRACKING __BIT(6)
|
||||
#define TPS65217PMIC_DEFX_XADJ __BIT(7)
|
||||
#define TPS65217PMIC_DEFX_LS __BIT(5)
|
||||
|
||||
#define TPS65217PMIC_ENABLE 0x16
|
||||
#define TPS65217PMIC_ENABLE_LDO2 __BIT(0)
|
||||
|
|
|
|||
Loading…
Reference in New Issue