From: "qipeng.zha" <[email protected]>
Add MFD core driver for Intel Broxton Whiskey Cove PMIC,
which is specially accessed by hardware IPC, not a generic
I2C device
Signed-off-by: qipeng.zha <[email protected]>
---
change in v4
add compile dependency to PMC IPC driver in Makefile, or will
use NULL stubs defined in PMC IPC header file;
change in v3
implement ipc regmap r/w callback in pmic driver, since there dropped
before patch of implement virtual ipc support in regmap core;
update some function's comment;
---
drivers/mfd/Makefile | 1 +
drivers/mfd/intel_soc_pmic_bxtwc.c | 529 +++++++++++++++++++++++++++++++++++++
include/linux/mfd/intel_bxtwc.h | 69 +++++
include/linux/mfd/intel_soc_pmic.h | 3 +
4 files changed, 602 insertions(+)
create mode 100644 drivers/mfd/intel_soc_pmic_bxtwc.c
create mode 100644 include/linux/mfd/intel_bxtwc.h
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 0e5cfeb..8fc894e 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -183,5 +183,6 @@ obj-$(CONFIG_MFD_RT5033) += rt5033.o
obj-$(CONFIG_MFD_SKY81452) += sky81452.o
intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
+intel-soc-pmic-$(CONFIG_INTEL_PMC_IPC) += intel_soc_pmic_bxtwc.o
obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
obj-$(CONFIG_MFD_MT6397) += mt6397-core.o
diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
new file mode 100644
index 0000000..7ebbcb2
--- /dev/null
+++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
@@ -0,0 +1,529 @@
+/*
+ * intel_soc_pmic_bxtwc.c: MFD core driver for Intel Broxton Whiskey Cove PMIC
+ *
+ * Copyright (C) 2015 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/acpi.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/intel_bxtwc.h>
+#include <asm/intel_pmc_ipc.h>
+
+/* PMIC device registers */
+#define REG_ADDR_MASK 0xFF00
+#define REG_ADDR_SHIFT 8
+#define REG_OFFSET_MASK 0xFF
+
+/* Interrupt Status Registers */
+#define BXTWC_IRQLVL1 0x4E02
+#define BXTWC_PWRBTNIRQ 0x4E03
+
+#define BXTWC_THRM0IRQ 0x4E04
+#define BXTWC_THRM1IRQ 0x4E05
+#define BXTWC_THRM2IRQ 0x4E06
+#define BXTWC_BCUIRQ 0x4E07
+#define BXTWC_ADCIRQ 0x4E08
+#define BXTWC_CHGR0IRQ 0x4E09
+#define BXTWC_CHGR1IRQ 0x4E0A
+#define BXTWC_GPIOIRQ0 0x4E0B
+#define BXTWC_GPIOIRQ1 0x4E0C
+#define BXTWC_CRITIRQ 0x4E0D
+
+/* Interrupt MASK Registers */
+#define BXTWC_MIRQLVL1 0x4E0E
+#define BXTWC_MPWRTNIRQ 0x4E0F
+
+#define BXTWC_MTHRM0IRQ 0x4E12
+#define BXTWC_MTHRM1IRQ 0x4E13
+#define BXTWC_MTHRM2IRQ 0x4E14
+#define BXTWC_MBCUIRQ 0x4E15
+#define BXTWC_MADCIRQ 0x4E16
+#define BXTWC_MCHGR0IRQ 0x4E17
+#define BXTWC_MCHGR1IRQ 0x4E18
+#define BXTWC_MGPIO0IRQ 0x4E19
+#define BXTWC_MGPIO1IRQ 0x4E1A
+#define BXTWC_MCRITIRQ 0x4E1B
+
+/* Whiskey Cove PMIC share same ACPI ID between different platforms */
+#define BROXTON_PMIC_WC_HRV 4
+
+/* Manage in two irq chips since mask registers are not consecutive*/
+enum bxtwc_irqs {
+ /* Level 1 */
+ BXTWC_PWRBTN_LVL1_IRQ = 0,
+ BXTWC_TMU_LVL1_IRQ,
+ BXTWC_THRM_LVL1_IRQ,
+ BXTWC_BCU_LVL1_IRQ,
+ BXTWC_ADC_LVL1_IRQ,
+ BXTWC_CHGR_LVL1_IRQ,
+ BXTWC_GPIO_LVL1_IRQ,
+ BXTWC_CRIT_LVL1_IRQ,
+
+ /* Level 2 */
+ BXTWC_PWRBTN_IRQ,
+};
+
+enum bxtwc_irqs_level2 {
+ /* Level 2 */
+ BXTWC_THRM0_IRQ = 0,
+ BXTWC_THRM1_IRQ,
+ BXTWC_THRM2_IRQ,
+ BXTWC_BCU_IRQ,
+ BXTWC_ADC_IRQ,
+ BXTWC_CHGR0_IRQ,
+ BXTWC_CHGR1_IRQ,
+ BXTWC_GPIO0_IRQ,
+ BXTWC_GPIO1_IRQ,
+ BXTWC_CRIT_IRQ,
+};
+
+#define INIT_REGMAP_IRQ(_irq, _off, _mask) \
+ [_irq] = { .reg_offset = (_off), .mask = (_mask) }
+
+static const struct regmap_irq bxtwc_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(BXTWC_PWRBTN_LVL1_IRQ, 0, BIT(0)),
+ INIT_REGMAP_IRQ(BXTWC_TMU_LVL1_IRQ, 0, BIT(1)),
+ INIT_REGMAP_IRQ(BXTWC_THRM_LVL1_IRQ, 0, BIT(2)),
+ INIT_REGMAP_IRQ(BXTWC_BCU_LVL1_IRQ, 0, BIT(3)),
+ INIT_REGMAP_IRQ(BXTWC_ADC_LVL1_IRQ, 0, BIT(4)),
+ INIT_REGMAP_IRQ(BXTWC_CHGR_LVL1_IRQ, 0, BIT(5)),
+ INIT_REGMAP_IRQ(BXTWC_GPIO_LVL1_IRQ, 0, BIT(6)),
+ INIT_REGMAP_IRQ(BXTWC_CRIT_LVL1_IRQ, 0, BIT(7)),
+ INIT_REGMAP_IRQ(BXTWC_PWRBTN_IRQ, 1, 0x03),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_level2[] = {
+ INIT_REGMAP_IRQ(BXTWC_THRM0_IRQ, 0, 0xff),
+ INIT_REGMAP_IRQ(BXTWC_THRM1_IRQ, 1, 0xbf),
+ INIT_REGMAP_IRQ(BXTWC_THRM2_IRQ, 2, 0xff),
+ INIT_REGMAP_IRQ(BXTWC_BCU_IRQ, 3, 0x1f),
+ INIT_REGMAP_IRQ(BXTWC_ADC_IRQ, 4, 0xff),
+ INIT_REGMAP_IRQ(BXTWC_CHGR0_IRQ, 5, 0x1f),
+ INIT_REGMAP_IRQ(BXTWC_CHGR1_IRQ, 6, 0x1f),
+ INIT_REGMAP_IRQ(BXTWC_GPIO0_IRQ, 7, 0xff),
+ INIT_REGMAP_IRQ(BXTWC_GPIO1_IRQ, 8, 0x3f),
+ INIT_REGMAP_IRQ(BXTWC_CRIT_IRQ, 9, 0x03),
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
+ .name = "bxtwc_irq_chip",
+ .status_base = BXTWC_IRQLVL1,
+ .mask_base = BXTWC_MIRQLVL1,
+ .irqs = bxtwc_regmap_irqs,
+ .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs),
+ .num_regs = 2,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_level2 = {
+ .name = "bxtwc_irq_chip_level2",
+ .status_base = BXTWC_THRM0IRQ,
+ .mask_base = BXTWC_MTHRM0IRQ,
+ .irqs = bxtwc_regmap_irqs_level2,
+ .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_level2),
+ .num_regs = 10,
+};
+
+static struct resource gpio_resources[] = {
+ {
+ .name = "GPIO0",
+ .start = BXTWC_GPIO0_IRQ,
+ .end = BXTWC_GPIO0_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "GPIO1",
+ .start = BXTWC_GPIO1_IRQ,
+ .end = BXTWC_GPIO1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource adc_resources[] = {
+ {
+ .name = "ADC",
+ .start = BXTWC_ADC_IRQ,
+ .end = BXTWC_ADC_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource charger_resources[] = {
+ {
+ .name = "CHARGER",
+ .start = BXTWC_CHGR0_IRQ,
+ .end = BXTWC_CHGR0_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "CHARGER1",
+ .start = BXTWC_CHGR1_IRQ,
+ .end = BXTWC_CHGR1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource thermal_resources[] = {
+ {
+ .start = BXTWC_THRM0_IRQ,
+ .end = BXTWC_THRM0_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = BXTWC_THRM1_IRQ,
+ .end = BXTWC_THRM1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = BXTWC_THRM2_IRQ,
+ .end = BXTWC_THRM2_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource bcu_resources[] = {
+ {
+ .name = "BCU",
+ .start = BXTWC_BCU_IRQ,
+ .end = BXTWC_BCU_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell bxt_wc_dev[] = {
+ {
+ .name = "bxt_wcove_gpadc",
+ .num_resources = ARRAY_SIZE(adc_resources),
+ .resources = adc_resources,
+ },
+ {
+ .name = "bxt_wcove_thermal",
+ .num_resources = ARRAY_SIZE(thermal_resources),
+ .resources = thermal_resources,
+ },
+ {
+ .name = "bxt_wcove_ext_charger",
+ .num_resources = ARRAY_SIZE(charger_resources),
+ .resources = charger_resources,
+ },
+ {
+ .name = "bxt_wcove_bcu",
+ .num_resources = ARRAY_SIZE(bcu_resources),
+ .resources = bcu_resources,
+ },
+ {
+ .name = "bxt_wcove_gpio",
+ .num_resources = ARRAY_SIZE(gpio_resources),
+ .resources = gpio_resources,
+ },
+ {
+ .name = "bxt_wcove_sw_fuel_gauge",
+ .num_resources = 0,
+ .resources = NULL,
+ },
+ {
+ .name = "bxt_wcove_sw_fuel_gauge_ha",
+ .num_resources = 0,
+ .resources = NULL,
+ },
+};
+
+static int regmap_ipc_byte_reg_read(void *context, unsigned int reg,
+ unsigned int *val)
+{
+ int ret;
+ int i2c_addr;
+ u8 ipc_in[2];
+ u8 ipc_out[4];
+ struct intel_soc_pmic *pmic = context;
+
+ if (reg & REG_ADDR_MASK)
+ i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
+ else {
+ i2c_addr = pmic->default_i2c_addr;
+ if (!i2c_addr) {
+ dev_err(pmic->dev, "Wrong register addr to read\n");
+ return -EINVAL;
+ }
+ }
+ reg &= REG_OFFSET_MASK;
+
+ ipc_in[0] = reg;
+ ipc_in[1] = i2c_addr;
+ ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
+ PMC_IPC_PMIC_ACCESS_READ,
+ ipc_in, sizeof(ipc_in), (u32 *)ipc_out, 1);
+ if (ret) {
+ dev_err(pmic->dev, "Err: ipc read pmic\n");
+ return ret;
+ }
+ *val = ipc_out[0];
+ return 0;
+}
+
+static int regmap_ipc_byte_reg_write(void *context, unsigned int reg,
+ unsigned int val)
+{
+ int ret;
+ int i2c_addr;
+ u8 ipc_in[3];
+ struct intel_soc_pmic *pmic = context;
+
+ if (reg & REG_ADDR_MASK)
+ i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
+ else {
+ i2c_addr = pmic->default_i2c_addr;
+ if (!i2c_addr) {
+ dev_err(pmic->dev, "Wrong register addr to write\n");
+ return -EINVAL;
+ }
+ }
+ reg &= REG_OFFSET_MASK;
+
+ ipc_in[0] = reg;
+ ipc_in[1] = i2c_addr;
+ ipc_in[2] = val;
+ ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
+ PMC_IPC_PMIC_ACCESS_WRITE,
+ ipc_in, sizeof(ipc_in), NULL, 0);
+ if (ret) {
+ dev_err(pmic->dev, "Err: ipc write pmic\n");
+ return ret;
+ }
+ return 0;
+}
+
+/* sysfs interfaces to r/w PMIC registers, required by initial script */
+static unsigned long bxtwc_reg_addr;
+static ssize_t bxtwc_reg_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "0x%lx\n", bxtwc_reg_addr);
+}
+
+static ssize_t bxtwc_reg_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ if (kstrtoul(buf, 0, &bxtwc_reg_addr)) {
+ dev_err(dev, "Invalid register addr\n");
+ return -EINVAL;
+ }
+ return (ssize_t)count;
+}
+
+static ssize_t bxtwc_val_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ unsigned int val;
+ struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+ ret = regmap_read(pmic->regmap, bxtwc_reg_addr, &val);
+ if (ret < 0) {
+ dev_err(dev, "Fail to read 0x%lx\n", bxtwc_reg_addr);
+ return -EIO;
+ }
+
+ return sprintf(buf, "0x%02x\n", val);
+}
+
+static ssize_t bxtwc_val_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ unsigned int val;
+ struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+ if (kstrtoul(buf, 0, (unsigned long *)&val)) {
+ dev_err(dev, "Invalid value\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_write(pmic->regmap, bxtwc_reg_addr, val);
+ if (ret) {
+ dev_err(dev, "Write err: 0x%lx=0x%02x\n", bxtwc_reg_addr, val);
+ return -EIO;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(addr, S_IWUSR | S_IRUSR, bxtwc_reg_show, bxtwc_reg_store);
+static DEVICE_ATTR(val, S_IWUSR | S_IRUSR, bxtwc_val_show, bxtwc_val_store);
+static struct attribute *bxtwc_attrs[] = {
+ &dev_attr_addr.attr,
+ &dev_attr_val.attr,
+ NULL
+};
+
+static const struct attribute_group bxtwc_group = {
+ .attrs = bxtwc_attrs,
+};
+
+static const struct regmap_config bxtwc_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .reg_write = regmap_ipc_byte_reg_write,
+ .reg_read = regmap_ipc_byte_reg_read,
+};
+
+static int bxtwc_probe(struct platform_device *pdev)
+{
+ struct intel_soc_pmic *pmic;
+ unsigned long long hrv;
+ acpi_handle handle;
+ acpi_status status;
+ int ret;
+
+ handle = ACPI_HANDLE(&pdev->dev);
+ status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&pdev->dev, "ACPI error when get _HRV\n");
+ return -ENODEV;
+ }
+ if (hrv != BROXTON_PMIC_WC_HRV) {
+ dev_err(&pdev->dev, "Wrong _HRV %llu\n", hrv);
+ return -ENODEV;
+ }
+
+ pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+ if (!pmic)
+ return -ENOMEM;
+
+ pmic->irq = platform_get_irq(pdev, 0);
+ if (pmic->irq < 0) {
+ dev_err(&pdev->dev, "No irq resource?\n");
+ return -ENOENT;
+ }
+
+ dev_set_drvdata(&pdev->dev, pmic);
+ pmic->dev = &pdev->dev;
+ pmic->default_i2c_addr = BXTWC_DEVICE1_ADDR;
+
+ pmic->regmap = devm_regmap_init(&pdev->dev, NULL, pmic,
+ &bxtwc_regmap_config);
+ if (IS_ERR(pmic->regmap)) {
+ ret = PTR_ERR(pmic->regmap);
+ dev_err(&pdev->dev, "Fail to init pmic ipc regmap: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
+ IRQF_ONESHOT | IRQF_SHARED,
+ 0, &bxtwc_regmap_irq_chip,
+ &pmic->irq_chip_data);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to add irq chip\n");
+ return ret;
+ }
+
+ ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
+ IRQF_ONESHOT | IRQF_SHARED,
+ 0, &bxtwc_regmap_irq_chip_level2,
+ &pmic->irq_chip_data_level2);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to add irq chip level2\n");
+ goto err_irq_chip_level2;
+ }
+
+ ret = mfd_add_devices(&pdev->dev, -1, bxt_wc_dev,
+ ARRAY_SIZE(bxt_wc_dev), NULL, 0,
+ NULL);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to addr irq chip level2\n");
+ goto err_mfd;
+ }
+
+ ret = sysfs_create_group(&pdev->dev.kobj, &bxtwc_group);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to create sysfs group %d\n", ret);
+ goto err_sysfs;
+ }
+
+ return 0;
+
+err_sysfs:
+ mfd_remove_devices(&pdev->dev);
+err_mfd:
+ regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
+err_irq_chip_level2:
+ regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
+
+ return ret;
+}
+
+static int bxtwc_remove(struct platform_device *pdev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
+
+ sysfs_remove_group(&pdev->dev.kobj, &bxtwc_group);
+ mfd_remove_devices(&pdev->dev);
+ regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
+ regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
+ return 0;
+}
+
+static void bxtwc_shutdown(struct platform_device *pdev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
+
+ disable_irq(pmic->irq);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bxtwc_suspend(struct device *dev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+ disable_irq(pmic->irq);
+ return 0;
+}
+
+static int bxtwc_resume(struct device *dev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+ enable_irq(pmic->irq);
+ return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(bxtwc_pm_ops, bxtwc_suspend, bxtwc_resume);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id bxtwc_acpi_ids[] = {
+ { "INT34D3", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, pmic_acpi_ids);
+#endif
+
+static struct platform_driver bxtwc_driver = {
+ .probe = bxtwc_probe,
+ .remove = bxtwc_remove,
+ .shutdown = bxtwc_shutdown,
+ .driver = {
+ .name = "bxtwc",
+ .pm = &bxtwc_pm_ops,
+ .acpi_match_table = ACPI_PTR(bxtwc_acpi_ids),
+ },
+};
+
+module_platform_driver(bxtwc_driver);
+
+MODULE_LICENSE("GPL V2");
+MODULE_AUTHOR("qipeng zha<[email protected]>");
diff --git a/include/linux/mfd/intel_bxtwc.h b/include/linux/mfd/intel_bxtwc.h
new file mode 100644
index 0000000..1a0ee9d
--- /dev/null
+++ b/include/linux/mfd/intel_bxtwc.h
@@ -0,0 +1,69 @@
+/*
+ * intel_bxtwc.h - Header file for Intel Broxton Whiskey Cove PMIC
+ *
+ * Copyright (C) 2015 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include <linux/mfd/intel_soc_pmic.h>
+
+#ifndef __INTEL_BXTWC_H__
+#define __INTEL_BXTWC_H__
+
+/* BXT WC devices */
+#define BXTWC_DEVICE1_ADDR 0x4E
+#define BXTWC_DEVICE2_ADDR 0x4F
+#define BXTWC_DEVICE3_ADDR 0x5E
+
+/* device1 Registers */
+#define BXTWC_CHIPID 0x4E00
+#define BXTWC_CHIPVER 0x4E01
+
+#define BXTWC_SCHGRIRQ0_ADDR 0x5E1A
+#define BXTWC_CHGRCTRL0_ADDR 0x5E16
+#define BXTWC_CHGRCTRL1_ADDR 0x5E17
+#define BXTWC_CHGRCTRL2_ADDR 0x5E18
+#define BXTWC_CHGRSTATUS_ADDR 0x5E19
+#define BXTWC_THRMBATZONE_ADDR 0x4F22
+
+#define BXTWC_USBPATH_ADDR 0x5E19
+#define BXTWC_USBPHYCTRL_ADDR 0x5E07
+#define BXTWC_USBIDCTRL_ADDR 0x5E05
+#define BXTWC_USBIDEN_MASK 0x01
+#define BXTWC_USBIDSTAT_ADDR 0x00FF
+#define BXTWC_USBSRCDETSTATUS_ADDR 0x5E29
+
+#define BXTWC_DBGUSBBC1_ADDR 0x5FE0
+#define BXTWC_DBGUSBBC2_ADDR 0x5FE1
+#define BXTWC_DBGUSBBCSTAT_ADDR 0x5FE2
+
+#define BXTWC_WAKESRC_ADDR 0x4E22
+#define BXTWC_WAKESRC2_ADDR 0x4EE5
+#define BXTWC_CHRTTADDR_ADDR 0x5E22
+#define BXTWC_CHRTTDATA_ADDR 0x5E23
+
+#define BXTWC_STHRMIRQ0_ADDR 0x4F19
+#define WC_MTHRMIRQ1_ADDR 0x4E12
+#define WC_STHRMIRQ1_ADDR 0x4F1A
+#define WC_STHRMIRQ2_ADDR 0x4F1B
+
+#define BXTWC_THRMZN0H_ADDR 0x4F44
+#define BXTWC_THRMZN0L_ADDR 0x4F45
+#define BXTWC_THRMZN1H_ADDR 0x4F46
+#define BXTWC_THRMZN1L_ADDR 0x4F47
+#define BXTWC_THRMZN2H_ADDR 0x4F48
+#define BXTWC_THRMZN2L_ADDR 0x4F49
+#define BXTWC_THRMZN3H_ADDR 0x4F4A
+#define BXTWC_THRMZN3L_ADDR 0x4F4B
+#define BXTWC_THRMZN4H_ADDR 0x4F4C
+#define BXTWC_THRMZN4L_ADDR 0x4F4D
+
+#endif
diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h
index abcbfcf..35e7904 100644
--- a/include/linux/mfd/intel_soc_pmic.h
+++ b/include/linux/mfd/intel_soc_pmic.h
@@ -25,6 +25,9 @@ struct intel_soc_pmic {
int irq;
struct regmap *regmap;
struct regmap_irq_chip_data *irq_chip_data;
+ struct regmap_irq_chip_data *irq_chip_data_level2;
+ struct device *dev;
+ int default_i2c_addr;
};
#endif /* __INTEL_SOC_PMIC_H__ */
--
1.8.3.2
On Tue, 11 Aug 2015, Qipeng Zha wrote:
> From: "qipeng.zha" <[email protected]>
Can you set your name properly in Git please?
I believe it should read "Qipeng Zha", as it does in your mailer.
> Add MFD core driver for Intel Broxton Whiskey Cove PMIC,
> which is specially accessed by hardware IPC, not a generic
> I2C device
>
> Signed-off-by: qipeng.zha <[email protected]>
> ---
> change in v4
> add compile dependency to PMC IPC driver in Makefile, or will
> use NULL stubs defined in PMC IPC header file;
>
> change in v3
> implement ipc regmap r/w callback in pmic driver, since there dropped
> before patch of implement virtual ipc support in regmap core;
> update some function's comment;
> ---
> drivers/mfd/Makefile | 1 +
> drivers/mfd/intel_soc_pmic_bxtwc.c | 529 +++++++++++++++++++++++++++++++++++++
> include/linux/mfd/intel_bxtwc.h | 69 +++++
> include/linux/mfd/intel_soc_pmic.h | 3 +
> 4 files changed, 602 insertions(+)
> create mode 100644 drivers/mfd/intel_soc_pmic_bxtwc.c
> create mode 100644 include/linux/mfd/intel_bxtwc.h
>
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 0e5cfeb..8fc894e 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -183,5 +183,6 @@ obj-$(CONFIG_MFD_RT5033) += rt5033.o
> obj-$(CONFIG_MFD_SKY81452) += sky81452.o
>
> intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
> +intel-soc-pmic-$(CONFIG_INTEL_PMC_IPC) += intel_soc_pmic_bxtwc.o
You want to build this for all Intel products?
> obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
> obj-$(CONFIG_MFD_MT6397) += mt6397-core.o
> diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
> new file mode 100644
> index 0000000..7ebbcb2
> --- /dev/null
> +++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
> @@ -0,0 +1,529 @@
> +/*
> + * intel_soc_pmic_bxtwc.c: MFD core driver for Intel Broxton Whiskey Cove PMIC
> + *
> + * Copyright (C) 2015 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope 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.
> + *
Superfluous '\n'.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/version.h>
> +#include <linux/err.h>
> +#include <linux/delay.h>
> +#include <linux/irq.h>
> +#include <linux/interrupt.h>
> +#include <linux/acpi.h>
> +#include <linux/mfd/core.h>
> +#include <linux/mfd/intel_bxtwc.h>
> +#include <asm/intel_pmc_ipc.h>
Alphabetical please.
> +/* PMIC device registers */
> +#define REG_ADDR_MASK 0xFF00
> +#define REG_ADDR_SHIFT 8
> +#define REG_OFFSET_MASK 0xFF
> +
> +/* Interrupt Status Registers */
> +#define BXTWC_IRQLVL1 0x4E02
> +#define BXTWC_PWRBTNIRQ 0x4E03
> +
> +#define BXTWC_THRM0IRQ 0x4E04
> +#define BXTWC_THRM1IRQ 0x4E05
> +#define BXTWC_THRM2IRQ 0x4E06
> +#define BXTWC_BCUIRQ 0x4E07
> +#define BXTWC_ADCIRQ 0x4E08
> +#define BXTWC_CHGR0IRQ 0x4E09
> +#define BXTWC_CHGR1IRQ 0x4E0A
> +#define BXTWC_GPIOIRQ0 0x4E0B
> +#define BXTWC_GPIOIRQ1 0x4E0C
> +#define BXTWC_CRITIRQ 0x4E0D
> +
> +/* Interrupt MASK Registers */
> +#define BXTWC_MIRQLVL1 0x4E0E
> +#define BXTWC_MPWRTNIRQ 0x4E0F
> +
> +#define BXTWC_MTHRM0IRQ 0x4E12
> +#define BXTWC_MTHRM1IRQ 0x4E13
> +#define BXTWC_MTHRM2IRQ 0x4E14
> +#define BXTWC_MBCUIRQ 0x4E15
> +#define BXTWC_MADCIRQ 0x4E16
> +#define BXTWC_MCHGR0IRQ 0x4E17
> +#define BXTWC_MCHGR1IRQ 0x4E18
> +#define BXTWC_MGPIO0IRQ 0x4E19
> +#define BXTWC_MGPIO1IRQ 0x4E1A
> +#define BXTWC_MCRITIRQ 0x4E1B
> +
> +/* Whiskey Cove PMIC share same ACPI ID between different platforms */
> +#define BROXTON_PMIC_WC_HRV 4
> +
> +/* Manage in two irq chips since mask registers are not consecutive*/
s/irq/IRQ/
Fix whitespace issue.
> +enum bxtwc_irqs {
> + /* Level 1 */
> + BXTWC_PWRBTN_LVL1_IRQ = 0,
> + BXTWC_TMU_LVL1_IRQ,
> + BXTWC_THRM_LVL1_IRQ,
> + BXTWC_BCU_LVL1_IRQ,
> + BXTWC_ADC_LVL1_IRQ,
> + BXTWC_CHGR_LVL1_IRQ,
> + BXTWC_GPIO_LVL1_IRQ,
> + BXTWC_CRIT_LVL1_IRQ,
> +
> + /* Level 2 */
> + BXTWC_PWRBTN_IRQ,
> +};
> +
> +enum bxtwc_irqs_level2 {
> + /* Level 2 */
> + BXTWC_THRM0_IRQ = 0,
> + BXTWC_THRM1_IRQ,
> + BXTWC_THRM2_IRQ,
> + BXTWC_BCU_IRQ,
> + BXTWC_ADC_IRQ,
> + BXTWC_CHGR0_IRQ,
> + BXTWC_CHGR1_IRQ,
> + BXTWC_GPIO0_IRQ,
> + BXTWC_GPIO1_IRQ,
> + BXTWC_CRIT_IRQ,
> +};
> +
> +#define INIT_REGMAP_IRQ(_irq, _off, _mask) \
> + [_irq] = { .reg_offset = (_off), .mask = (_mask) }
If this is useful to you, it's likely to be useful to others.
Please place this in include submit this as a separate patch.
> +static const struct regmap_irq bxtwc_regmap_irqs[] = {
> + INIT_REGMAP_IRQ(BXTWC_PWRBTN_LVL1_IRQ, 0, BIT(0)),
> + INIT_REGMAP_IRQ(BXTWC_TMU_LVL1_IRQ, 0, BIT(1)),
> + INIT_REGMAP_IRQ(BXTWC_THRM_LVL1_IRQ, 0, BIT(2)),
> + INIT_REGMAP_IRQ(BXTWC_BCU_LVL1_IRQ, 0, BIT(3)),
> + INIT_REGMAP_IRQ(BXTWC_ADC_LVL1_IRQ, 0, BIT(4)),
> + INIT_REGMAP_IRQ(BXTWC_CHGR_LVL1_IRQ, 0, BIT(5)),
> + INIT_REGMAP_IRQ(BXTWC_GPIO_LVL1_IRQ, 0, BIT(6)),
> + INIT_REGMAP_IRQ(BXTWC_CRIT_LVL1_IRQ, 0, BIT(7)),
> + INIT_REGMAP_IRQ(BXTWC_PWRBTN_IRQ, 1, 0x03),
> +};
> +
> +static const struct regmap_irq bxtwc_regmap_irqs_level2[] = {
> + INIT_REGMAP_IRQ(BXTWC_THRM0_IRQ, 0, 0xff),
> + INIT_REGMAP_IRQ(BXTWC_THRM1_IRQ, 1, 0xbf),
> + INIT_REGMAP_IRQ(BXTWC_THRM2_IRQ, 2, 0xff),
> + INIT_REGMAP_IRQ(BXTWC_BCU_IRQ, 3, 0x1f),
> + INIT_REGMAP_IRQ(BXTWC_ADC_IRQ, 4, 0xff),
> + INIT_REGMAP_IRQ(BXTWC_CHGR0_IRQ, 5, 0x1f),
> + INIT_REGMAP_IRQ(BXTWC_CHGR1_IRQ, 6, 0x1f),
> + INIT_REGMAP_IRQ(BXTWC_GPIO0_IRQ, 7, 0xff),
> + INIT_REGMAP_IRQ(BXTWC_GPIO1_IRQ, 8, 0x3f),
> + INIT_REGMAP_IRQ(BXTWC_CRIT_IRQ, 9, 0x03),
> +};
> +
> +static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
> + .name = "bxtwc_irq_chip",
> + .status_base = BXTWC_IRQLVL1,
> + .mask_base = BXTWC_MIRQLVL1,
> + .irqs = bxtwc_regmap_irqs,
> + .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs),
> + .num_regs = 2,
> +};
> +
> +static struct regmap_irq_chip bxtwc_regmap_irq_chip_level2 = {
> + .name = "bxtwc_irq_chip_level2",
> + .status_base = BXTWC_THRM0IRQ,
> + .mask_base = BXTWC_MTHRM0IRQ,
> + .irqs = bxtwc_regmap_irqs_level2,
> + .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_level2),
> + .num_regs = 10,
> +};
> +
> +static struct resource gpio_resources[] = {
> + {
> + .name = "GPIO0",
> + .start = BXTWC_GPIO0_IRQ,
> + .end = BXTWC_GPIO0_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .name = "GPIO1",
> + .start = BXTWC_GPIO1_IRQ,
> + .end = BXTWC_GPIO1_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct resource adc_resources[] = {
> + {
> + .name = "ADC",
> + .start = BXTWC_ADC_IRQ,
> + .end = BXTWC_ADC_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct resource charger_resources[] = {
> + {
> + .name = "CHARGER",
> + .start = BXTWC_CHGR0_IRQ,
> + .end = BXTWC_CHGR0_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .name = "CHARGER1",
> + .start = BXTWC_CHGR1_IRQ,
> + .end = BXTWC_CHGR1_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct resource thermal_resources[] = {
> + {
> + .start = BXTWC_THRM0_IRQ,
> + .end = BXTWC_THRM0_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = BXTWC_THRM1_IRQ,
> + .end = BXTWC_THRM1_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = BXTWC_THRM2_IRQ,
> + .end = BXTWC_THRM2_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct resource bcu_resources[] = {
> + {
> + .name = "BCU",
> + .start = BXTWC_BCU_IRQ,
> + .end = BXTWC_BCU_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
Please use the DEFINE_RES_* macros for all of the above.
> +static struct mfd_cell bxt_wc_dev[] = {
> + {
> + .name = "bxt_wcove_gpadc",
> + .num_resources = ARRAY_SIZE(adc_resources),
> + .resources = adc_resources,
> + },
> + {
> + .name = "bxt_wcove_thermal",
> + .num_resources = ARRAY_SIZE(thermal_resources),
> + .resources = thermal_resources,
> + },
> + {
> + .name = "bxt_wcove_ext_charger",
> + .num_resources = ARRAY_SIZE(charger_resources),
> + .resources = charger_resources,
> + },
> + {
> + .name = "bxt_wcove_bcu",
> + .num_resources = ARRAY_SIZE(bcu_resources),
> + .resources = bcu_resources,
> + },
> + {
> + .name = "bxt_wcove_gpio",
> + .num_resources = ARRAY_SIZE(gpio_resources),
> + .resources = gpio_resources,
> + },
> + {
> + .name = "bxt_wcove_sw_fuel_gauge",
> + .num_resources = 0,
> + .resources = NULL,
Remove these two lines.
> + },
> + {
> + .name = "bxt_wcove_sw_fuel_gauge_ha",
> + .num_resources = 0,
> + .resources = NULL,
As above.
> + },
> +};
> +
> +static int regmap_ipc_byte_reg_read(void *context, unsigned int reg,
> + unsigned int *val)
> +{
> + int ret;
> + int i2c_addr;
> + u8 ipc_in[2];
> + u8 ipc_out[4];
> + struct intel_soc_pmic *pmic = context;
> +
> + if (reg & REG_ADDR_MASK)
> + i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
> + else {
> + i2c_addr = pmic->default_i2c_addr;
> + if (!i2c_addr) {
> + dev_err(pmic->dev, "Wrong register addr to read\n");
"I2C address not set"?
> + return -EINVAL;
> + }
> + }
> + reg &= REG_OFFSET_MASK;
> +
> + ipc_in[0] = reg;
> + ipc_in[1] = i2c_addr;
> + ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
> + PMC_IPC_PMIC_ACCESS_READ,
> + ipc_in, sizeof(ipc_in), (u32 *)ipc_out, 1);
> + if (ret) {
> + dev_err(pmic->dev, "Err: ipc read pmic\n");
"Failed to read from PMIC"?
> + return ret;
> + }
> + *val = ipc_out[0];
> + return 0;
> +}
> +
> +static int regmap_ipc_byte_reg_write(void *context, unsigned int reg,
> + unsigned int val)
> +{
> + int ret;
> + int i2c_addr;
> + u8 ipc_in[3];
> + struct intel_soc_pmic *pmic = context;
> +
> + if (reg & REG_ADDR_MASK)
> + i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
> + else {
> + i2c_addr = pmic->default_i2c_addr;
> + if (!i2c_addr) {
> + dev_err(pmic->dev, "Wrong register addr to write\n");
"I2C address not set"?
> + return -EINVAL;
> + }
> + }
> + reg &= REG_OFFSET_MASK;
> +
> + ipc_in[0] = reg;
> + ipc_in[1] = i2c_addr;
> + ipc_in[2] = val;
> + ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
> + PMC_IPC_PMIC_ACCESS_WRITE,
> + ipc_in, sizeof(ipc_in), NULL, 0);
> + if (ret) {
> + dev_err(pmic->dev, "Err: ipc write pmic\n");
"Failed to write to PMIC"?
> + return ret;
> + }
> + return 0;
> +}
> +
> +/* sysfs interfaces to r/w PMIC registers, required by initial script */
You really want to be able to do that from userspace?
> +static unsigned long bxtwc_reg_addr;
> +static ssize_t bxtwc_reg_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + return sprintf(buf, "0x%lx\n", bxtwc_reg_addr);
> +}
> +
> +static ssize_t bxtwc_reg_store(struct device *dev,
> + struct device_attribute *attr, const char *buf, size_t count)
> +{
> + if (kstrtoul(buf, 0, &bxtwc_reg_addr)) {
> + dev_err(dev, "Invalid register addr\n");
Why don't you write "address" in full?
It's much more professional in error messages.
> + return -EINVAL;
> + }
> + return (ssize_t)count;
> +}
> +
> +static ssize_t bxtwc_val_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + int ret;
> + unsigned int val;
> + struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
> +
> + ret = regmap_read(pmic->regmap, bxtwc_reg_addr, &val);
> + if (ret < 0) {
> + dev_err(dev, "Fail to read 0x%lx\n", bxtwc_reg_addr);
> + return -EIO;
> + }
> +
> + return sprintf(buf, "0x%02x\n", val);
> +}
> +
> +static ssize_t bxtwc_val_store(struct device *dev,
> + struct device_attribute *attr, const char *buf, size_t count)
> +{
> + int ret;
> + unsigned int val;
> + struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
> +
> + if (kstrtoul(buf, 0, (unsigned long *)&val)) {
> + dev_err(dev, "Invalid value\n");
"value" is pretty vague. I'm sure you can do better than that.
> + return -EINVAL;
> + }
> +
> + ret = regmap_write(pmic->regmap, bxtwc_reg_addr, val);
> + if (ret) {
> + dev_err(dev, "Write err: 0x%lx=0x%02x\n", bxtwc_reg_addr, val);
"Failed to write value 0x%02x to address 0x%lx", val, bxtwc_reg_addr ?
> + return -EIO;
> + }
> + return count;
> +}
> +
> +static DEVICE_ATTR(addr, S_IWUSR | S_IRUSR, bxtwc_reg_show, bxtwc_reg_store);
> +static DEVICE_ATTR(val, S_IWUSR | S_IRUSR, bxtwc_val_show, bxtwc_val_store);
> +static struct attribute *bxtwc_attrs[] = {
> + &dev_attr_addr.attr,
> + &dev_attr_val.attr,
> + NULL
> +};
> +
> +static const struct attribute_group bxtwc_group = {
> + .attrs = bxtwc_attrs,
> +};
> +
> +static const struct regmap_config bxtwc_regmap_config = {
> + .reg_bits = 16,
> + .val_bits = 8,
> + .reg_write = regmap_ipc_byte_reg_write,
> + .reg_read = regmap_ipc_byte_reg_read,
> +};
> +
> +static int bxtwc_probe(struct platform_device *pdev)
> +{
> + struct intel_soc_pmic *pmic;
> + unsigned long long hrv;
> + acpi_handle handle;
> + acpi_status status;
> + int ret;
> +
> + handle = ACPI_HANDLE(&pdev->dev);
> + status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv);
> + if (ACPI_FAILURE(status)) {
> + dev_err(&pdev->dev, "ACPI error when get _HRV\n");
I'm not even sure what this means. Please find a better way to
portray what just happened.
> + return -ENODEV;
> + }
> + if (hrv != BROXTON_PMIC_WC_HRV) {
> + dev_err(&pdev->dev, "Wrong _HRV %llu\n", hrv);
> + return -ENODEV;
> + }
You have to think to yourself, what will a user make of this?
I would think, unless you know this code, it's pretty undecipherable.
> + pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
> + if (!pmic)
> + return -ENOMEM;
> +
> + pmic->irq = platform_get_irq(pdev, 0);
> + if (pmic->irq < 0) {
> + dev_err(&pdev->dev, "No irq resource?\n");
"Invalid IRQ"?
> + return -ENOENT;
If irq < 0, then it's already an error code, so just return that,
rather than making up your own.
> + }
> +
> + dev_set_drvdata(&pdev->dev, pmic);
> + pmic->dev = &pdev->dev;
> + pmic->default_i2c_addr = BXTWC_DEVICE1_ADDR;
Can this be anything different?
If not, get rid of the variable and just use the define.
If it can, how can it?
> + pmic->regmap = devm_regmap_init(&pdev->dev, NULL, pmic,
> + &bxtwc_regmap_config);
> + if (IS_ERR(pmic->regmap)) {
> + ret = PTR_ERR(pmic->regmap);
> + dev_err(&pdev->dev, "Fail to init pmic ipc regmap: %d\n", ret);
"Failed to initialise regmap".
> + return ret;
> + }
> +
> + ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
> + IRQF_ONESHOT | IRQF_SHARED,
> + 0, &bxtwc_regmap_irq_chip,
> + &pmic->irq_chip_data);
> + if (ret) {
> + dev_err(&pdev->dev, "Fail to add irq chip\n");
"Failed to add IRQ chip"
> + return ret;
> + }
> +
> + ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
> + IRQF_ONESHOT | IRQF_SHARED,
> + 0, &bxtwc_regmap_irq_chip_level2,
> + &pmic->irq_chip_data_level2);
> + if (ret) {
> + dev_err(&pdev->dev, "Fail to add irq chip level2\n");
"Failed to add secondary IRQ chip"
> + goto err_irq_chip_level2;
> + }
> +
> + ret = mfd_add_devices(&pdev->dev, -1, bxt_wc_dev,
Don't use magic numbers, there are defines these.
> + ARRAY_SIZE(bxt_wc_dev), NULL, 0,
> + NULL);
> + if (ret) {
> + dev_err(&pdev->dev, "Fail to addr irq chip level2\n");
Eh?
"Failed to add devices"?
> + goto err_mfd;
> + }
> +
> + ret = sysfs_create_group(&pdev->dev.kobj, &bxtwc_group);
> + if (ret) {
> + dev_err(&pdev->dev, "Fail to create sysfs group %d\n", ret);
> + goto err_sysfs;
> + }
> +
> + return 0;
> +
> +err_sysfs:
> + mfd_remove_devices(&pdev->dev);
> +err_mfd:
> + regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
> +err_irq_chip_level2:
> + regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
> +
> + return ret;
> +}
> +
> +static int bxtwc_remove(struct platform_device *pdev)
> +{
> + struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
> +
> + sysfs_remove_group(&pdev->dev.kobj, &bxtwc_group);
> + mfd_remove_devices(&pdev->dev);
> + regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
> + regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
I'd prefer to see a '\n' here.
> + return 0;
> +}
> +
> +static void bxtwc_shutdown(struct platform_device *pdev)
> +{
> + struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
> +
> + disable_irq(pmic->irq);
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int bxtwc_suspend(struct device *dev)
> +{
> + struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
> +
> + disable_irq(pmic->irq);
... and here.
> + return 0;
> +}
> +
> +static int bxtwc_resume(struct device *dev)
> +{
> + struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
> +
> + enable_irq(pmic->irq);
... and here.
> + return 0;
> +}
> +#endif
> +static SIMPLE_DEV_PM_OPS(bxtwc_pm_ops, bxtwc_suspend, bxtwc_resume);
> +
> +#ifdef CONFIG_ACPI
> +static const struct acpi_device_id bxtwc_acpi_ids[] = {
> + { "INT34D3", },
> + { }
> +};
> +MODULE_DEVICE_TABLE(acpi, pmic_acpi_ids);
> +#endif
Can this driver even operate without ACPI?
> +static struct platform_driver bxtwc_driver = {
> + .probe = bxtwc_probe,
> + .remove = bxtwc_remove,
> + .shutdown = bxtwc_shutdown,
> + .driver = {
> + .name = "bxtwc",
If this is a PMIC driver, it would be good to reflect that in the
name. After all, this is what's going to identify the part in error
messages and the like.
> + .pm = &bxtwc_pm_ops,
> + .acpi_match_table = ACPI_PTR(bxtwc_acpi_ids),
> + },
> +};
> +
> +module_platform_driver(bxtwc_driver);
> +
> +MODULE_LICENSE("GPL V2");
> +MODULE_AUTHOR("qipeng zha<[email protected]>");
Capitalise your name and fix the whitespace issue.
> diff --git a/include/linux/mfd/intel_bxtwc.h b/include/linux/mfd/intel_bxtwc.h
> new file mode 100644
> index 0000000..1a0ee9d
> --- /dev/null
> +++ b/include/linux/mfd/intel_bxtwc.h
> @@ -0,0 +1,69 @@
> +/*
> + * intel_bxtwc.h - Header file for Intel Broxton Whiskey Cove PMIC
> + *
> + * Copyright (C) 2015 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope 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.
> + */
> +
> +#include <linux/mfd/intel_soc_pmic.h>
> +
> +#ifndef __INTEL_BXTWC_H__
> +#define __INTEL_BXTWC_H__
> +
> +/* BXT WC devices */
> +#define BXTWC_DEVICE1_ADDR 0x4E
> +#define BXTWC_DEVICE2_ADDR 0x4F
> +#define BXTWC_DEVICE3_ADDR 0x5E
> +
> +/* device1 Registers */
> +#define BXTWC_CHIPID 0x4E00
> +#define BXTWC_CHIPVER 0x4E01
> +
> +#define BXTWC_SCHGRIRQ0_ADDR 0x5E1A
> +#define BXTWC_CHGRCTRL0_ADDR 0x5E16
> +#define BXTWC_CHGRCTRL1_ADDR 0x5E17
> +#define BXTWC_CHGRCTRL2_ADDR 0x5E18
> +#define BXTWC_CHGRSTATUS_ADDR 0x5E19
> +#define BXTWC_THRMBATZONE_ADDR 0x4F22
> +
> +#define BXTWC_USBPATH_ADDR 0x5E19
> +#define BXTWC_USBPHYCTRL_ADDR 0x5E07
> +#define BXTWC_USBIDCTRL_ADDR 0x5E05
> +#define BXTWC_USBIDEN_MASK 0x01
> +#define BXTWC_USBIDSTAT_ADDR 0x00FF
> +#define BXTWC_USBSRCDETSTATUS_ADDR 0x5E29
> +
> +#define BXTWC_DBGUSBBC1_ADDR 0x5FE0
> +#define BXTWC_DBGUSBBC2_ADDR 0x5FE1
> +#define BXTWC_DBGUSBBCSTAT_ADDR 0x5FE2
> +
> +#define BXTWC_WAKESRC_ADDR 0x4E22
> +#define BXTWC_WAKESRC2_ADDR 0x4EE5
> +#define BXTWC_CHRTTADDR_ADDR 0x5E22
> +#define BXTWC_CHRTTDATA_ADDR 0x5E23
> +
> +#define BXTWC_STHRMIRQ0_ADDR 0x4F19
> +#define WC_MTHRMIRQ1_ADDR 0x4E12
> +#define WC_STHRMIRQ1_ADDR 0x4F1A
> +#define WC_STHRMIRQ2_ADDR 0x4F1B
> +
> +#define BXTWC_THRMZN0H_ADDR 0x4F44
> +#define BXTWC_THRMZN0L_ADDR 0x4F45
> +#define BXTWC_THRMZN1H_ADDR 0x4F46
> +#define BXTWC_THRMZN1L_ADDR 0x4F47
> +#define BXTWC_THRMZN2H_ADDR 0x4F48
> +#define BXTWC_THRMZN2L_ADDR 0x4F49
> +#define BXTWC_THRMZN3H_ADDR 0x4F4A
> +#define BXTWC_THRMZN3L_ADDR 0x4F4B
> +#define BXTWC_THRMZN4H_ADDR 0x4F4C
> +#define BXTWC_THRMZN4L_ADDR 0x4F4D
> +
> +#endif
> diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h
> index abcbfcf..35e7904 100644
> --- a/include/linux/mfd/intel_soc_pmic.h
> +++ b/include/linux/mfd/intel_soc_pmic.h
> @@ -25,6 +25,9 @@ struct intel_soc_pmic {
> int irq;
> struct regmap *regmap;
> struct regmap_irq_chip_data *irq_chip_data;
> + struct regmap_irq_chip_data *irq_chip_data_level2;
> + struct device *dev;
> + int default_i2c_addr;
> };
>
> #endif /* __INTEL_SOC_PMIC_H__ */
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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> intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
> +intel-soc-pmic-$(CONFIG_INTEL_PMC_IPC) += intel_soc_pmic_bxtwc.o
> You want to build this for all Intel products?
As intel_soc_pmic_crc driver, this is depend on the option of CONFIG_INTEL_SOC_PMIC,
And it's depend on CONFIG_INTEL_PMC_IPC since hardware dependency.
> +
> +/* sysfs interfaces to r/w PMIC registers, required by initial script
> +*/
> You really want to be able to do that from userspace?
There is real requirement for this.
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