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authorLuka Perkov <luka@openwrt.org>2013-10-16 03:25:52 +0000
committerLuka Perkov <luka@openwrt.org>2013-10-16 03:25:52 +0000
commitdc0297e21fa7d09e0ea34e70baf0033db501d109 (patch)
treebdef09b1b0eb4c03a136f3e9b828825f3a55640d /target
parent0cd026cc5bba2d3450cfa34bab99bff4124b538a (diff)
downloadupstream-dc0297e21fa7d09e0ea34e70baf0033db501d109.tar.gz
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imx6: add pfuze100 regulator support
- backport driver - apply patch to allow misprogrammed parts - enable driver in kernel Signed-off-by: Tim Harvey <tharvey@gateworks.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38422 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/imx6/config-3.101
-rw-r--r--target/linux/imx6/patches-3.10/0020-pfuze100-regulator.patch522
-rw-r--r--target/linux/imx6/patches-3.10/0021-pfuze100-allow-misprogrammed-id.patch20
3 files changed, 543 insertions, 0 deletions
diff --git a/target/linux/imx6/config-3.10 b/target/linux/imx6/config-3.10
index 883695a6a8..0df9fabf7f 100644
--- a/target/linux/imx6/config-3.10
+++ b/target/linux/imx6/config-3.10
@@ -293,6 +293,7 @@ CONFIG_REGULATOR=y
CONFIG_REGULATOR_ANATOP=y
# CONFIG_REGULATOR_DEBUG is not set
# CONFIG_REGULATOR_DUMMY is not set
+CONFIG_REGULATOR_PFUZE100=y
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_RFKILL_REGULATOR is not set
CONFIG_RFS_ACCEL=y
diff --git a/target/linux/imx6/patches-3.10/0020-pfuze100-regulator.patch b/target/linux/imx6/patches-3.10/0020-pfuze100-regulator.patch
new file mode 100644
index 0000000000..1e1294a443
--- /dev/null
+++ b/target/linux/imx6/patches-3.10/0020-pfuze100-regulator.patch
@@ -0,0 +1,522 @@
+--- a/drivers/regulator/Kconfig
++++ b/drivers/regulator/Kconfig
+@@ -300,6 +300,14 @@ config REGULATOR_PCF50633
+ Say Y here to support the voltage regulators and convertors
+ on PCF50633
+
++config REGULATOR_PFUZE100
++ tristate "Support regulators on Freescale PFUZE100 PMIC"
++ depends on I2C
++ select REGMAP_I2C
++ help
++ Say y here to support the regulators found on the Freescale PFUZE100
++ PMIC.
++
+ config REGULATOR_RC5T583
+ tristate "RICOH RC5T583 Power regulators"
+ depends on MFD_RC5T583
+--- a/drivers/regulator/Makefile
++++ b/drivers/regulator/Makefile
+@@ -45,6 +45,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc137
+ obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
+ obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
+ obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
++obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
+ obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
+ obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
+ obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
+--- /dev/null
++++ b/drivers/regulator/pfuze100-regulator.c
+@@ -0,0 +1,445 @@
++/*
++ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/err.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/regulator/of_regulator.h>
++#include <linux/platform_device.h>
++#include <linux/regulator/driver.h>
++#include <linux/regulator/machine.h>
++#include <linux/regulator/pfuze100.h>
++#include <linux/i2c.h>
++#include <linux/slab.h>
++#include <linux/regmap.h>
++
++#define PFUZE_NUMREGS 128
++#define PFUZE100_VOL_OFFSET 0
++#define PFUZE100_STANDBY_OFFSET 1
++#define PFUZE100_MODE_OFFSET 3
++#define PFUZE100_CONF_OFFSET 4
++
++#define PFUZE100_DEVICEID 0x0
++#define PFUZE100_REVID 0x3
++#define PFUZE100_FABID 0x3
++
++#define PFUZE100_SW1ABVOL 0x20
++#define PFUZE100_SW1CVOL 0x2e
++#define PFUZE100_SW2VOL 0x35
++#define PFUZE100_SW3AVOL 0x3c
++#define PFUZE100_SW3BVOL 0x43
++#define PFUZE100_SW4VOL 0x4a
++#define PFUZE100_SWBSTCON1 0x66
++#define PFUZE100_VREFDDRCON 0x6a
++#define PFUZE100_VSNVSVOL 0x6b
++#define PFUZE100_VGEN1VOL 0x6c
++#define PFUZE100_VGEN2VOL 0x6d
++#define PFUZE100_VGEN3VOL 0x6e
++#define PFUZE100_VGEN4VOL 0x6f
++#define PFUZE100_VGEN5VOL 0x70
++#define PFUZE100_VGEN6VOL 0x71
++
++struct pfuze_regulator {
++ struct regulator_desc desc;
++ unsigned char stby_reg;
++ unsigned char stby_mask;
++};
++
++struct pfuze_chip {
++ struct regmap *regmap;
++ struct device *dev;
++ struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
++ struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
++};
++
++static const int pfuze100_swbst[] = {
++ 5000000, 5050000, 5100000, 5150000,
++};
++
++static const int pfuze100_vsnvs[] = {
++ 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
++};
++
++static const struct i2c_device_id pfuze_device_id[] = {
++ {.name = "pfuze100"},
++ {},
++};
++MODULE_DEVICE_TABLE(i2c, pfuze_device_id);
++
++static const struct of_device_id pfuze_dt_ids[] = {
++ { .compatible = "fsl,pfuze100" },
++ {},
++};
++MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
++
++static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
++{
++ struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
++ int id = rdev->desc->id;
++ unsigned int ramp_bits;
++ int ret;
++
++ if (id < PFUZE100_SWBST) {
++ ramp_delay = 12500 / ramp_delay;
++ ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
++ ret = regmap_update_bits(pfuze100->regmap,
++ rdev->desc->vsel_reg + 4,
++ 0xc0, ramp_bits << 6);
++ if (ret < 0)
++ dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
++ } else
++ ret = -EACCES;
++
++ return ret;
++}
++
++static struct regulator_ops pfuze100_ldo_regulator_ops = {
++ .enable = regulator_enable_regmap,
++ .disable = regulator_disable_regmap,
++ .is_enabled = regulator_is_enabled_regmap,
++ .list_voltage = regulator_list_voltage_linear,
++ .set_voltage_sel = regulator_set_voltage_sel_regmap,
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++};
++
++static struct regulator_ops pfuze100_fixed_regulator_ops = {
++ .list_voltage = regulator_list_voltage_linear,
++};
++
++static struct regulator_ops pfuze100_sw_regulator_ops = {
++ .list_voltage = regulator_list_voltage_linear,
++ .set_voltage_sel = regulator_set_voltage_sel_regmap,
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++ .set_voltage_time_sel = regulator_set_voltage_time_sel,
++ .set_ramp_delay = pfuze100_set_ramp_delay,
++};
++
++static struct regulator_ops pfuze100_swb_regulator_ops = {
++ .list_voltage = regulator_list_voltage_table,
++ .map_voltage = regulator_map_voltage_ascend,
++ .set_voltage_sel = regulator_set_voltage_sel_regmap,
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++
++};
++
++#define PFUZE100_FIXED_REG(_name, base, voltage) \
++ [PFUZE100_ ## _name] = { \
++ .desc = { \
++ .name = #_name, \
++ .n_voltages = 1, \
++ .ops = &pfuze100_fixed_regulator_ops, \
++ .type = REGULATOR_VOLTAGE, \
++ .id = PFUZE100_ ## _name, \
++ .owner = THIS_MODULE, \
++ .min_uV = (voltage), \
++ .enable_reg = (base), \
++ .enable_mask = 0x10, \
++ }, \
++ }
++
++#define PFUZE100_SW_REG(_name, base, min, max, step) \
++ [PFUZE100_ ## _name] = { \
++ .desc = { \
++ .name = #_name,\
++ .n_voltages = ((max) - (min)) / (step) + 1, \
++ .ops = &pfuze100_sw_regulator_ops, \
++ .type = REGULATOR_VOLTAGE, \
++ .id = PFUZE100_ ## _name, \
++ .owner = THIS_MODULE, \
++ .min_uV = (min), \
++ .uV_step = (step), \
++ .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
++ .vsel_mask = 0x3f, \
++ }, \
++ .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
++ .stby_mask = 0x3f, \
++ }
++
++#define PFUZE100_SWB_REG(_name, base, mask, voltages) \
++ [PFUZE100_ ## _name] = { \
++ .desc = { \
++ .name = #_name, \
++ .n_voltages = ARRAY_SIZE(voltages), \
++ .ops = &pfuze100_swb_regulator_ops, \
++ .type = REGULATOR_VOLTAGE, \
++ .id = PFUZE100_ ## _name, \
++ .owner = THIS_MODULE, \
++ .volt_table = voltages, \
++ .vsel_reg = (base), \
++ .vsel_mask = (mask), \
++ }, \
++ }
++
++#define PFUZE100_VGEN_REG(_name, base, min, max, step) \
++ [PFUZE100_ ## _name] = { \
++ .desc = { \
++ .name = #_name, \
++ .n_voltages = ((max) - (min)) / (step) + 1, \
++ .ops = &pfuze100_ldo_regulator_ops, \
++ .type = REGULATOR_VOLTAGE, \
++ .id = PFUZE100_ ## _name, \
++ .owner = THIS_MODULE, \
++ .min_uV = (min), \
++ .uV_step = (step), \
++ .vsel_reg = (base), \
++ .vsel_mask = 0xf, \
++ .enable_reg = (base), \
++ .enable_mask = 0x10, \
++ }, \
++ .stby_reg = (base), \
++ .stby_mask = 0x20, \
++ }
++
++static struct pfuze_regulator pfuze100_regulators[] = {
++ PFUZE100_SW_REG(SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
++ PFUZE100_SW_REG(SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
++ PFUZE100_SW_REG(SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
++ PFUZE100_SW_REG(SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
++ PFUZE100_SW_REG(SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
++ PFUZE100_SW_REG(SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
++ PFUZE100_SWB_REG(SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
++ PFUZE100_SWB_REG(VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
++ PFUZE100_FIXED_REG(VREFDDR, PFUZE100_VREFDDRCON, 750000),
++ PFUZE100_VGEN_REG(VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
++ PFUZE100_VGEN_REG(VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
++ PFUZE100_VGEN_REG(VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
++ PFUZE100_VGEN_REG(VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
++ PFUZE100_VGEN_REG(VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
++ PFUZE100_VGEN_REG(VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
++};
++
++#ifdef CONFIG_OF
++static struct of_regulator_match pfuze100_matches[] = {
++ { .name = "sw1ab", },
++ { .name = "sw1c", },
++ { .name = "sw2", },
++ { .name = "sw3a", },
++ { .name = "sw3b", },
++ { .name = "sw4", },
++ { .name = "swbst", },
++ { .name = "vsnvs", },
++ { .name = "vrefddr", },
++ { .name = "vgen1", },
++ { .name = "vgen2", },
++ { .name = "vgen3", },
++ { .name = "vgen4", },
++ { .name = "vgen5", },
++ { .name = "vgen6", },
++};
++
++static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
++{
++ struct device *dev = chip->dev;
++ struct device_node *np, *parent;
++ int ret;
++
++ np = of_node_get(dev->parent->of_node);
++ if (!np)
++ return 0;
++
++ parent = of_find_node_by_name(np, "regulators");
++ if (!parent) {
++ dev_err(dev, "regulators node not found\n");
++ return -EINVAL;
++ }
++
++ ret = of_regulator_match(dev, parent, pfuze100_matches,
++ ARRAY_SIZE(pfuze100_matches));
++
++ of_node_put(parent);
++ if (ret < 0) {
++ dev_err(dev, "Error parsing regulator init data: %d\n",
++ ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++static inline struct regulator_init_data *match_init_data(int index)
++{
++ return pfuze100_matches[index].init_data;
++}
++
++static inline struct device_node *match_of_node(int index)
++{
++ return pfuze100_matches[index].of_node;
++}
++#else
++static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
++{
++ return 0;
++}
++
++static inline struct regulator_init_data *match_init_data(int index)
++{
++ return NULL;
++}
++
++static inline struct device_node *match_of_node(int index)
++{
++ return NULL;
++}
++#endif
++
++static int pfuze_identify(struct pfuze_chip *pfuze_chip)
++{
++ unsigned int value;
++ int ret;
++
++ ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
++ if (ret)
++ return ret;
++
++ if (value & 0x0f) {
++ dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
++ return -ENODEV;
++ }
++
++ ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
++ if (ret)
++ return ret;
++ dev_info(pfuze_chip->dev,
++ "Full lay: %x, Metal lay: %x\n",
++ (value & 0xf0) >> 4, value & 0x0f);
++
++ ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
++ if (ret)
++ return ret;
++ dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
++ (value & 0xc) >> 2, value & 0x3);
++
++ return 0;
++}
++
++static const struct regmap_config pfuze_regmap_config = {
++ .reg_bits = 8,
++ .val_bits = 8,
++ .max_register = PFUZE_NUMREGS - 1,
++ .cache_type = REGCACHE_RBTREE,
++};
++
++static int pfuze100_regulator_probe(struct i2c_client *client,
++ const struct i2c_device_id *id)
++{
++ struct pfuze_chip *pfuze_chip;
++ struct pfuze_regulator_platform_data *pdata =
++ dev_get_platdata(&client->dev);
++ struct regulator_config config = { };
++ int i, ret;
++
++ pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip),
++ GFP_KERNEL);
++ if (!pfuze_chip)
++ return -ENOMEM;
++
++ i2c_set_clientdata(client, pfuze_chip);
++
++ memcpy(pfuze_chip->regulator_descs, pfuze100_regulators,
++ sizeof(pfuze_chip->regulator_descs));
++
++ pfuze_chip->dev = &client->dev;
++
++ pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
++ if (IS_ERR(pfuze_chip->regmap)) {
++ ret = PTR_ERR(pfuze_chip->regmap);
++ dev_err(&client->dev,
++ "regmap allocation failed with err %d\n", ret);
++ return ret;
++ }
++
++ ret = pfuze_identify(pfuze_chip);
++ if (ret) {
++ dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
++ return ret;
++ }
++
++ ret = pfuze_parse_regulators_dt(pfuze_chip);
++ if (ret)
++ return ret;
++
++ for (i = 0; i < PFUZE100_MAX_REGULATOR; i++) {
++ struct regulator_init_data *init_data;
++ struct regulator_desc *desc;
++ int val;
++
++ desc = &pfuze_chip->regulator_descs[i].desc;
++
++ if (pdata)
++ init_data = pdata->init_data[i];
++ else
++ init_data = match_init_data(i);
++
++ /* SW2~SW4 high bit check and modify the voltage value table */
++ if (i > PFUZE100_SW1C && i < PFUZE100_SWBST) {
++ regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val);
++ if (val & 0x40) {
++ desc->min_uV = 800000;
++ desc->uV_step = 50000;
++ desc->n_voltages = 51;
++ }
++ }
++
++ config.dev = &client->dev;
++ config.init_data = init_data;
++ config.driver_data = pfuze_chip;
++ config.of_node = match_of_node(i);
++
++ pfuze_chip->regulators[i] = regulator_register(desc, &config);
++ if (IS_ERR(pfuze_chip->regulators[i])) {
++ dev_err(&client->dev, "register regulator%s failed\n",
++ pfuze100_regulators[i].desc.name);
++ ret = PTR_ERR(pfuze_chip->regulators[i]);
++ while (--i >= 0)
++ regulator_unregister(pfuze_chip->regulators[i]);
++ return ret;
++ }
++ }
++
++ return 0;
++}
++
++static int pfuze100_regulator_remove(struct i2c_client *client)
++{
++ int i;
++ struct pfuze_chip *pfuze_chip = i2c_get_clientdata(client);
++
++ for (i = 0; i < PFUZE100_MAX_REGULATOR; i++)
++ regulator_unregister(pfuze_chip->regulators[i]);
++
++ return 0;
++}
++
++static struct i2c_driver pfuze_driver = {
++ .id_table = pfuze_device_id,
++ .driver = {
++ .name = "pfuze100-regulator",
++ .owner = THIS_MODULE,
++ .of_match_table = pfuze_dt_ids,
++ },
++ .probe = pfuze100_regulator_probe,
++ .remove = pfuze100_regulator_remove,
++};
++module_i2c_driver(pfuze_driver);
++
++MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
++MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100 PMIC");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("i2c:pfuze100-regulator");
+--- /dev/null
++++ b/include/linux/regulator/pfuze100.h
+@@ -0,0 +1,44 @@
++/*
++ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License along
++ * with this program; if not, write to the Free Software Foundation, Inc.,
++ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
++ */
++#ifndef __LINUX_REG_PFUZE100_H
++#define __LINUX_REG_PFUZE100_H
++
++#define PFUZE100_SW1AB 0
++#define PFUZE100_SW1C 1
++#define PFUZE100_SW2 2
++#define PFUZE100_SW3A 3
++#define PFUZE100_SW3B 4
++#define PFUZE100_SW4 5
++#define PFUZE100_SWBST 6
++#define PFUZE100_VSNVS 7
++#define PFUZE100_VREFDDR 8
++#define PFUZE100_VGEN1 9
++#define PFUZE100_VGEN2 10
++#define PFUZE100_VGEN3 11
++#define PFUZE100_VGEN4 12
++#define PFUZE100_VGEN5 13
++#define PFUZE100_VGEN6 14
++#define PFUZE100_MAX_REGULATOR 15
++
++struct regulator_init_data;
++
++struct pfuze_regulator_platform_data {
++ struct regulator_init_data *init_data[PFUZE100_MAX_REGULATOR];
++};
++
++#endif /* __LINUX_REG_PFUZE100_H */
diff --git a/target/linux/imx6/patches-3.10/0021-pfuze100-allow-misprogrammed-id.patch b/target/linux/imx6/patches-3.10/0021-pfuze100-allow-misprogrammed-id.patch
new file mode 100644
index 0000000000..a9399a9297
--- /dev/null
+++ b/target/linux/imx6/patches-3.10/0021-pfuze100-allow-misprogrammed-id.patch
@@ -0,0 +1,20 @@
+--- a/drivers/regulator/pfuze100-regulator.c
++++ b/drivers/regulator/pfuze100-regulator.c
+@@ -308,9 +308,14 @@ static int pfuze_identify(struct pfuze_c
+ if (ret)
+ return ret;
+
+- if (value & 0x0f) {
+- dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
+- return -ENODEV;
++ switch (value & 0xf) {
++ case 0x0:
++ /* Freescale misprogrammed 1-3% of parts prior to week 8 of 2013 as ID=8 */
++ case 0x8:
++ break;
++ default:
++ dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
++ return -ENODEV;
+ }
+
+ ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);