linux/drivers/mfd/hi655x-pmic.c
Linus Torvalds 8de262531f - Core Frameworks
- Set 'struct device' fwnode when registering a new device
 
  - New Drivers
    - Add support for ROHM BD70528 PMIC
 
  - New Device Support
    - Add support for LP87561 4-Phase Regulator to TI LP87565 PMIC
    - Add support for RK809 and RK817 to Rockchip RK808
    - Add support for Lid Angle to ChromeOS core
    - Add support for CS47L15 CODEC to Madera core
    - Add support for CS47L92 CODEC to Madera core
    - Add support for ChromeOS (legacy) Accelerometers in ChromeOS core
    - Add support for Add Intel Elkhart Lake PCH to Intel LPSS
 
  - New Functionality
    - Provide regulator supply information when registering; madera-core
    - Additional Device Tree support; lp87565, madera, cros-ec, rohm,bd71837-pmic
    - Allow over-riding power button press via Device Tree; rohm-bd718x7
    - Differentiate between running processors; cros_ec_dev
 
  - Fix-ups
    - Big header file update; cros_ec_commands.h
    - Split header per-subsystem; rohm-bd718x7
    - Remove superfluous code; menelaus, cs5535-mfd, cs47lXX-tables
    - Trivial; sorting, coding style; intel-lpss-pci
    - Only remove Power Off functionality if set locally; rk808
    - Make use for Power Off Prepare(); rk808
    - Fix spelling mistake in header guards; stmfx
    - Properly free IDA resources
    - SPDX fixups; cs47lXX-tables, madera
    - Error path fixups; hi655x-pmic
 
  - Bug Fixes
    - Add missing break in case() statement
    - Repair undefined behaviour when not initialising variables; arizona-core, madera-core
    - Fix reference to Device Tree documentation; madera
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Merge tag 'mfd-next-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Core Frameworks:
   - Set 'struct device' fwnode when registering a new device

  New Drivers:
   - Add support for ROHM BD70528 PMIC

  New Device Support:
   - Add support for LP87561 4-Phase Regulator to TI LP87565 PMIC
   - Add support for RK809 and RK817 to Rockchip RK808
   - Add support for Lid Angle to ChromeOS core
   - Add support for CS47L15 CODEC to Madera core
   - Add support for CS47L92 CODEC to Madera core
   - Add support for ChromeOS (legacy) Accelerometers in ChromeOS core
   - Add support for Add Intel Elkhart Lake PCH to Intel LPSS

  New Functionality:
   - Provide regulator supply information when registering; madera-core
   - Additional Device Tree support; lp87565, madera, cros-ec, rohm,bd71837-pmic
   - Allow over-riding power button press via Device Tree; rohm-bd718x7
   - Differentiate between running processors; cros_ec_dev

  Fix-ups:
   - Big header file update; cros_ec_commands.h
   - Split header per-subsystem; rohm-bd718x7
   - Remove superfluous code; menelaus, cs5535-mfd, cs47lXX-tables
   - Trivial; sorting, coding style; intel-lpss-pci
   - Only remove Power Off functionality if set locally; rk808
   - Make use for Power Off Prepare(); rk808
   - Fix spelling mistake in header guards; stmfx
   - Properly free IDA resources
   - SPDX fixups; cs47lXX-tables, madera
   - Error path fixups; hi655x-pmic

  Bug Fixes:
   - Add missing break in case() statement
   - Repair undefined behaviour when not initialising variables; arizona-core, madera-core
   - Fix reference to Device Tree documentation; madera"

* tag 'mfd-next-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (45 commits)
  mfd: hi655x-pmic: Fix missing return value check for devm_regmap_init_mmio_clk
  mfd: madera: Fixup SPDX headers
  mfd: madera: Remove some unused registers and fix some defaults
  mfd: intel-lpss: Release IDA resources
  mfd: intel-lpss: Add Intel Elkhart Lake PCH PCI IDs
  mfd: cs5535-mfd: Remove ifdef OLPC noise
  mfd: stmfx: Fix macro definition spelling
  dt-bindings: mfd: Add link to ROHM BD71847 Datasheet
  MAINAINERS: Swap words in INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
  mfd: cros_ec_dev: Register cros_ec_accel_legacy driver as a subdevice
  mfd: rk808: Prepare rk805 for poweroff
  mfd: rk808: Check pm_power_off pointer
  mfd: cros_ec: differentiate SCP from EC by feature bit
  dt-bindings: Add binding for cros-ec-rpmsg
  mfd: madera: Add Madera core support for CS47L92
  mfd: madera: Add Madera core support for CS47L15
  mfd: madera: Update DT bindings to add additional CODECs
  mfd: madera: Add supply mapping for MICVDD
  mfd: madera: Fix potential uninitialised use of variable
  mfd: madera: Fix bad reference to pinctrl.txt file
  ...
2019-07-15 20:18:40 -07:00

187 lines
4.8 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Device driver for MFD hi655x PMIC
*
* Copyright (c) 2016 Hisilicon.
*
* Authors:
* Chen Feng <puck.chen@hisilicon.com>
* Fei Wang <w.f@huawei.com>
*/
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/mfd/core.h>
#include <linux/mfd/hi655x-pmic.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
static const struct regmap_irq hi655x_irqs[] = {
{ .reg_offset = 0, .mask = OTMP_D1R_INT_MASK },
{ .reg_offset = 0, .mask = VSYS_2P5_R_INT_MASK },
{ .reg_offset = 0, .mask = VSYS_UV_D3R_INT_MASK },
{ .reg_offset = 0, .mask = VSYS_6P0_D200UR_INT_MASK },
{ .reg_offset = 0, .mask = PWRON_D4SR_INT_MASK },
{ .reg_offset = 0, .mask = PWRON_D20F_INT_MASK },
{ .reg_offset = 0, .mask = PWRON_D20R_INT_MASK },
{ .reg_offset = 0, .mask = RESERVE_INT_MASK },
};
static const struct regmap_irq_chip hi655x_irq_chip = {
.name = "hi655x-pmic",
.irqs = hi655x_irqs,
.num_regs = 1,
.num_irqs = ARRAY_SIZE(hi655x_irqs),
.status_base = HI655X_IRQ_STAT_BASE,
.ack_base = HI655X_IRQ_STAT_BASE,
.mask_base = HI655X_IRQ_MASK_BASE,
};
static struct regmap_config hi655x_regmap_config = {
.reg_bits = 32,
.reg_stride = HI655X_STRIDE,
.val_bits = 8,
.max_register = HI655X_BUS_ADDR(0x400) - HI655X_STRIDE,
};
static struct resource pwrkey_resources[] = {
{
.name = "down",
.start = PWRON_D20R_INT,
.end = PWRON_D20R_INT,
.flags = IORESOURCE_IRQ,
}, {
.name = "up",
.start = PWRON_D20F_INT,
.end = PWRON_D20F_INT,
.flags = IORESOURCE_IRQ,
}, {
.name = "hold 4s",
.start = PWRON_D4SR_INT,
.end = PWRON_D4SR_INT,
.flags = IORESOURCE_IRQ,
},
};
static const struct mfd_cell hi655x_pmic_devs[] = {
{
.name = "hi65xx-powerkey",
.num_resources = ARRAY_SIZE(pwrkey_resources),
.resources = &pwrkey_resources[0],
},
{ .name = "hi655x-regulator", },
{ .name = "hi655x-clk", },
};
static void hi655x_local_irq_clear(struct regmap *map)
{
int i;
regmap_write(map, HI655X_ANA_IRQM_BASE, HI655X_IRQ_CLR);
for (i = 0; i < HI655X_IRQ_ARRAY; i++) {
regmap_write(map, HI655X_IRQ_STAT_BASE + i * HI655X_STRIDE,
HI655X_IRQ_CLR);
}
}
static int hi655x_pmic_probe(struct platform_device *pdev)
{
int ret;
struct hi655x_pmic *pmic;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
void __iomem *base;
pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic)
return -ENOMEM;
pmic->dev = dev;
pmic->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, pmic->res);
if (IS_ERR(base))
return PTR_ERR(base);
pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,
&hi655x_regmap_config);
if (IS_ERR(pmic->regmap))
return PTR_ERR(pmic->regmap);
regmap_read(pmic->regmap, HI655X_BUS_ADDR(HI655X_VER_REG), &pmic->ver);
if ((pmic->ver < PMU_VER_START) || (pmic->ver > PMU_VER_END)) {
dev_warn(dev, "PMU version %d unsupported\n", pmic->ver);
return -EINVAL;
}
hi655x_local_irq_clear(pmic->regmap);
pmic->gpio = of_get_named_gpio(np, "pmic-gpios", 0);
if (!gpio_is_valid(pmic->gpio)) {
dev_err(dev, "Failed to get the pmic-gpios\n");
return -ENODEV;
}
ret = devm_gpio_request_one(dev, pmic->gpio, GPIOF_IN,
"hi655x_pmic_irq");
if (ret < 0) {
dev_err(dev, "Failed to request gpio %d ret = %d\n",
pmic->gpio, ret);
return ret;
}
ret = regmap_add_irq_chip(pmic->regmap, gpio_to_irq(pmic->gpio),
IRQF_TRIGGER_LOW | IRQF_NO_SUSPEND, 0,
&hi655x_irq_chip, &pmic->irq_data);
if (ret) {
dev_err(dev, "Failed to obtain 'hi655x_pmic_irq' %d\n", ret);
return ret;
}
platform_set_drvdata(pdev, pmic);
ret = mfd_add_devices(dev, PLATFORM_DEVID_AUTO, hi655x_pmic_devs,
ARRAY_SIZE(hi655x_pmic_devs), NULL, 0,
regmap_irq_get_domain(pmic->irq_data));
if (ret) {
dev_err(dev, "Failed to register device %d\n", ret);
regmap_del_irq_chip(gpio_to_irq(pmic->gpio), pmic->irq_data);
return ret;
}
return 0;
}
static int hi655x_pmic_remove(struct platform_device *pdev)
{
struct hi655x_pmic *pmic = platform_get_drvdata(pdev);
regmap_del_irq_chip(gpio_to_irq(pmic->gpio), pmic->irq_data);
mfd_remove_devices(&pdev->dev);
return 0;
}
static const struct of_device_id hi655x_pmic_match[] = {
{ .compatible = "hisilicon,hi655x-pmic", },
{},
};
MODULE_DEVICE_TABLE(of, hi655x_pmic_match);
static struct platform_driver hi655x_pmic_driver = {
.driver = {
.name = "hi655x-pmic",
.of_match_table = of_match_ptr(hi655x_pmic_match),
},
.probe = hi655x_pmic_probe,
.remove = hi655x_pmic_remove,
};
module_platform_driver(hi655x_pmic_driver);
MODULE_AUTHOR("Chen Feng <puck.chen@hisilicon.com>");
MODULE_DESCRIPTION("Hisilicon hi655x PMIC driver");
MODULE_LICENSE("GPL v2");