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authorHans de Goede <hdegoede@redhat.com>2017-10-11 11:41:20 +0200
committerWolfram Sang <wsa@the-dreams.de>2017-10-27 15:51:51 +0200
commit0224d45c9d46401b6d7018a96cfe049c5da7d91c (patch)
tree9615ee7d2b6c0171f6f52a2aea55435e157653a3
parent728fe6cef27444b6575c5e7ab5de13274610488b (diff)
downloadlinux-0224d45c9d46401b6d7018a96cfe049c5da7d91c.tar.gz
i2c-cht-wc: Add device-properties for fusb302 integration
Add device-properties to make the bq24292i charger connected to the bus get its input-current-limit from the fusb302 Type-C port controller which is used on boards with the cht-wc PMIC, as well as regulator_init_data for the 5V boost converter on the bq24292i. Since this means we now hook-up the bq24292i to the fusb302 Type-C port controller add a check for the ACPI device which instantiates the fusb302. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
-rw-r--r--drivers/i2c/busses/Kconfig5
-rw-r--r--drivers/i2c/busses/i2c-cht-wc.c51
2 files changed, 49 insertions, 7 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 45a3f3ca29b3..009345d8f49d 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -198,6 +198,11 @@ config I2C_CHT_WC
SMBus controller found in the Intel Cherry Trail Whiskey Cove PMIC
found on some Intel Cherry Trail systems.
+ Note this controller is hooked up to a TI bq24292i charger-IC,
+ combined with a FUSB302 Type-C port-controller as such it is advised
+ to also select CONFIG_CHARGER_BQ24190=m and CONFIG_TYPEC_FUSB302=m
+ (the fusb302 driver currently is in drivers/staging).
+
config I2C_NFORCE2
tristate "Nvidia nForce2, nForce3 and nForce4"
depends on PCI
diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c
index 190bbbc7bfee..0d05dadb2dc5 100644
--- a/drivers/i2c/busses/i2c-cht-wc.c
+++ b/drivers/i2c/busses/i2c-cht-wc.c
@@ -16,6 +16,7 @@
* GNU General Public License for more details.
*/
+#include <linux/acpi.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/i2c.h>
@@ -25,6 +26,7 @@
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/power/bq24190_charger.h>
#include <linux/slab.h>
#define CHT_WC_I2C_CTRL 0x5e24
@@ -232,13 +234,35 @@ static const struct irq_chip cht_wc_i2c_irq_chip = {
.name = "cht_wc_ext_chrg_irq_chip",
};
+static const char * const bq24190_suppliers[] = { "fusb302-typec-source" };
+
static const struct property_entry bq24190_props[] = {
- PROPERTY_ENTRY_STRING("extcon-name", "cht_wcove_pwrsrc"),
+ PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_suppliers),
PROPERTY_ENTRY_BOOL("omit-battery-class"),
PROPERTY_ENTRY_BOOL("disable-reset"),
{ }
};
+static struct regulator_consumer_supply fusb302_consumer = {
+ .supply = "vbus",
+ /* Must match fusb302 dev_name in intel_cht_int33fe.c */
+ .dev_name = "i2c-fusb302",
+};
+
+static const struct regulator_init_data bq24190_vbus_init_data = {
+ .constraints = {
+ /* The name is used in intel_cht_int33fe.c do not change. */
+ .name = "cht_wc_usb_typec_vbus",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .consumer_supplies = &fusb302_consumer,
+ .num_consumer_supplies = 1,
+};
+
+static struct bq24190_platform_data bq24190_pdata = {
+ .regulator_init_data = &bq24190_vbus_init_data,
+};
+
static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
@@ -246,7 +270,9 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
struct i2c_board_info board_info = {
.type = "bq24190",
.addr = 0x6b,
+ .dev_name = "bq24190",
.properties = bq24190_props,
+ .platform_data = &bq24190_pdata,
};
int ret, reg, irq;
@@ -314,11 +340,21 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
if (ret)
goto remove_irq_domain;
- board_info.irq = adap->client_irq;
- adap->client = i2c_new_device(&adap->adapter, &board_info);
- if (!adap->client) {
- ret = -ENOMEM;
- goto del_adapter;
+ /*
+ * Normally the Whiskey Cove PMIC is paired with a TI bq24292i charger,
+ * connected to this i2c bus, and a max17047 fuel-gauge and a fusb302
+ * USB Type-C controller connected to another i2c bus. In this setup
+ * the max17047 and fusb302 devices are enumerated through an INT33FE
+ * ACPI device. If this device is present register an i2c-client for
+ * the TI bq24292i charger.
+ */
+ if (acpi_dev_present("INT33FE", NULL, -1)) {
+ board_info.irq = adap->client_irq;
+ adap->client = i2c_new_device(&adap->adapter, &board_info);
+ if (!adap->client) {
+ ret = -ENOMEM;
+ goto del_adapter;
+ }
}
platform_set_drvdata(pdev, adap);
@@ -335,7 +371,8 @@ static int cht_wc_i2c_adap_i2c_remove(struct platform_device *pdev)
{
struct cht_wc_i2c_adap *adap = platform_get_drvdata(pdev);
- i2c_unregister_device(adap->client);
+ if (adap->client)
+ i2c_unregister_device(adap->client);
i2c_del_adapter(&adap->adapter);
irq_domain_remove(adap->irq_domain);