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authorHans de Goede <hdegoede@redhat.com>2017-10-11 11:41:21 +0200
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-11-03 13:52:28 +0200
commit455e027f33a03ddffe82c36f430a4d173e840b75 (patch)
treea40bb3c67ac47c61592a7033547cc2cbd90794c9 /drivers/platform/x86
parent7d9a6ef558f6ff375aab9e29f08124cb0daa9bc5 (diff)
platform/x86: intel_cht_int33fe: Update fusb302 type string, add properties
The fusb302 driver as merged in staging uses "typec_fusb302" as i2c-id rather then just "fusb302" and needs us to set a number of device- properties, adjust the intel_cht_int33fe driver accordingly. One of the properties set is max-snk-mv which makes the fusb302 driver negotiate up to 12V charging voltage, which is a bad idea on boards which are not setup to handle this, so this commit also adds 2 extra sanity checks to make sure that the expected Whiskey Cove PMIC + TI bq24292i charger combo, which can handle 12V, is present. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86')
-rw-r--r--drivers/platform/x86/Kconfig6
-rw-r--r--drivers/platform/x86/intel_cht_int33fe.c44
2 files changed, 48 insertions, 2 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 0fdf68865c5e..87c8c36efce4 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -806,7 +806,7 @@ config ACPI_CMPC
config INTEL_CHT_INT33FE
tristate "Intel Cherry Trail ACPI INT33FE Driver"
- depends on X86 && ACPI && I2C
+ depends on X86 && ACPI && I2C && REGULATOR
---help---
This driver add support for the INT33FE ACPI device found on
some Intel Cherry Trail devices.
@@ -817,6 +817,10 @@ config INTEL_CHT_INT33FE
This driver instantiates i2c-clients for these, so that standard
i2c drivers for these chips can bind to the them.
+ If you enable this driver it is advised to also select
+ CONFIG_TYPEC_FUSB302=m, CONFIG_CHARGER_BQ24190=m and
+ CONFIG_BATTERY_MAX17042=m.
+
config INTEL_INT0002_VGPIO
tristate "Intel ACPI INT0002 Virtual GPIO driver"
depends on GPIOLIB && ACPI
diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c
index 286c6207765d..380ef7ec094f 100644
--- a/drivers/platform/x86/intel_cht_int33fe.c
+++ b/drivers/platform/x86/intel_cht_int33fe.c
@@ -24,6 +24,7 @@
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#define EXPECTED_PTYPE 4
@@ -77,12 +78,21 @@ static const struct property_entry max17047_props[] = {
{ }
};
+static const struct property_entry fusb302_props[] = {
+ PROPERTY_ENTRY_STRING("fcs,extcon-name", "cht_wcove_pwrsrc"),
+ PROPERTY_ENTRY_U32("fcs,max-sink-microvolt", 12000000),
+ PROPERTY_ENTRY_U32("fcs,max-sink-microamp", 3000000),
+ PROPERTY_ENTRY_U32("fcs,max-sink-microwatt", 36000000),
+ { }
+};
+
static int cht_int33fe_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct i2c_board_info board_info;
struct cht_int33fe_data *data;
struct i2c_client *max17047;
+ struct regulator *regulator;
unsigned long long ptyp;
acpi_status status;
int fusb302_irq;
@@ -101,6 +111,34 @@ static int cht_int33fe_probe(struct i2c_client *client)
if (ptyp != EXPECTED_PTYPE)
return -ENODEV;
+ /* Check presence of INT34D3 (hardware-rev 3) expected for ptype == 4 */
+ if (!acpi_dev_present("INT34D3", "1", 3)) {
+ dev_err(dev, "Error PTYPE == %d, but no INT34D3 device\n",
+ EXPECTED_PTYPE);
+ return -ENODEV;
+ }
+
+ /*
+ * We expect the WC PMIC to be paired with a TI bq24292i charger-IC.
+ * We check for the bq24292i vbus regulator here, this has 2 purposes:
+ * 1) The bq24292i allows charging with up to 12V, setting the fusb302's
+ * max-snk voltage to 12V with another charger-IC is not good.
+ * 2) For the fusb302 driver to get the bq24292i vbus regulator, the
+ * regulator-map, which is part of the bq24292i regulator_init_data,
+ * must be registered before the fusb302 is instantiated, otherwise
+ * it will end up with a dummy-regulator.
+ * Note "cht_wc_usb_typec_vbus" comes from the regulator_init_data
+ * which is defined in i2c-cht-wc.c from where the bq24292i i2c-client
+ * gets instantiated. We use regulator_get_optional here so that we
+ * don't end up getting a dummy-regulator ourselves.
+ */
+ regulator = regulator_get_optional(dev, "cht_wc_usb_typec_vbus");
+ if (IS_ERR(regulator)) {
+ ret = PTR_ERR(regulator);
+ return (ret == -ENODEV) ? -EPROBE_DEFER : ret;
+ }
+ regulator_put(regulator);
+
/* The FUSB302 uses the irq at index 1 and is the only irq user */
fusb302_irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 1);
if (fusb302_irq < 0) {
@@ -127,6 +165,7 @@ static int cht_int33fe_probe(struct i2c_client *client)
} else {
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "max17047", I2C_NAME_SIZE);
+ board_info.dev_name = "max17047";
board_info.properties = max17047_props;
data->max17047 = i2c_acpi_new_device(dev, 1, &board_info);
if (!data->max17047)
@@ -134,7 +173,9 @@ static int cht_int33fe_probe(struct i2c_client *client)
}
memset(&board_info, 0, sizeof(board_info));
- strlcpy(board_info.type, "fusb302", I2C_NAME_SIZE);
+ strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE);
+ board_info.dev_name = "fusb302";
+ board_info.properties = fusb302_props;
board_info.irq = fusb302_irq;
data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info);
@@ -142,6 +183,7 @@ static int cht_int33fe_probe(struct i2c_client *client)
goto out_unregister_max17047;
memset(&board_info, 0, sizeof(board_info));
+ board_info.dev_name = "pi3usb30532";
strlcpy(board_info.type, "pi3usb30532", I2C_NAME_SIZE);
data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info);