The power and resin keys were implemented as GPIOs here, but their only
use would be as buttons. Avoid the additional layer of introspection and
rework this driver into a button driver.
While we're here, replace the "qcom,pm8998-pwrkey" compatible with
"qcom,pm8941-pwrkey" to match upstream (Linux).
The dragonboard410c and 820c boards are adjusted to benefit from this
change too, simplify their custom board init code.
Signed-off-by: Caleb Connolly <caleb.conno...@linaro.org>
---
MAINTAINERS | 1 +
arch/arm/dts/dragonboard410c-uboot.dtsi | 11 --
arch/arm/dts/dragonboard410c.dts | 22 ++-
arch/arm/dts/dragonboard820c-uboot.dtsi | 12 --
arch/arm/dts/dragonboard820c.dts | 23 +++-
arch/arm/dts/dragonboard845c-uboot.dtsi | 11 --
arch/arm/dts/dragonboard845c.dts | 4 +
arch/arm/dts/sdm845.dtsi | 23 +++-
arch/arm/dts/starqltechn-uboot.dtsi | 10 --
arch/arm/dts/starqltechn.dts | 20 +--
arch/arm/mach-snapdragon/Kconfig | 3 +
arch/arm/mach-snapdragon/init_sdm845.c | 45 ++-----
board/qualcomm/dragonboard410c/dragonboard410c.c | 31 ++---
board/qualcomm/dragonboard820c/dragonboard820c.c | 29 ++--
drivers/button/Kconfig | 9 ++
drivers/button/Makefile | 1 +
drivers/button/button-qcom-pmic.c | 165 +++++++++++++++++++++++
drivers/gpio/Kconfig | 3 +-
drivers/gpio/qcom_pmic_gpio.c | 104 --------------
19 files changed, 269 insertions(+), 258 deletions(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index f6d63c8ab563..8cd102eaa070 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -572,6 +572,7 @@ M: Neil Armstrong <neil.armstr...@linaro.org>
R: Sumit Garg <sumit.g...@linaro.org>
S: Maintained
F: arch/arm/mach-snapdragon/
+F: drivers/button/button-qcom-pmic.c
F: drivers/clk/qcom/
F: drivers/gpio/msm_gpio.c
F: drivers/mmc/msm_sdhci.c
diff --git a/arch/arm/dts/dragonboard410c-uboot.dtsi
b/arch/arm/dts/dragonboard410c-uboot.dtsi
index 3b0bd0ed0a1b..cec64bf80f99 100644
--- a/arch/arm/dts/dragonboard410c-uboot.dtsi
+++ b/arch/arm/dts/dragonboard410c-uboot.dtsi
@@ -42,14 +42,3 @@
gpios = <&pm8916_gpios 3 0>;
};
};
-
-
-&pm8916_pon {
- key_vol_down {
- gpios = <&pm8916_pon 1 0>;
- };
-
- key_power {
- gpios = <&pm8916_pon 0 0>;
- };
-};
diff --git a/arch/arm/dts/dragonboard410c.dts b/arch/arm/dts/dragonboard410c.dts
index 9230dd3fd96c..c41fee977813 100644
--- a/arch/arm/dts/dragonboard410c.dts
+++ b/arch/arm/dts/dragonboard410c.dts
@@ -147,11 +147,23 @@
#address-cells = <0x1>;
#size-cells = <0x1>;
- pm8916_pon: pm8916_pon@800 {
- compatible = "qcom,pm8916-pwrkey";
- reg = <0x800 0x96>;
- #gpio-cells = <2>;
- gpio-controller;
+ pon@800 {
+ compatible = "qcom,pm8916-pon";
+ reg = <0x800 0x100>;
+ mode-bootloader = <0x2>;
+ mode-recovery = <0x1>;
+
+ pwrkey {
+ compatible =
"qcom,pm8941-pwrkey";
+ debounce = <15625>;
+ bias-pull-up;
+ };
+
+ pm8916_resin: resin {
+ compatible =
"qcom,pm8941-resin";
+ debounce = <15625>;
+ bias-pull-up;
+ };
};
pm8916_gpios: pm8916_gpios@c000 {
diff --git a/arch/arm/dts/dragonboard820c-uboot.dtsi
b/arch/arm/dts/dragonboard820c-uboot.dtsi
index 457728a43ecb..d93c7c1fbdee 100644
--- a/arch/arm/dts/dragonboard820c-uboot.dtsi
+++ b/arch/arm/dts/dragonboard820c-uboot.dtsi
@@ -30,15 +30,3 @@
};
};
};
-
-&pm8994_pon {
- key_vol_down {
- gpios = <&pm8994_pon 1 0>;
- label = "key_vol_down";
- };
-
- key_power {
- gpios = <&pm8994_pon 0 0>;
- label = "key_power";
- };
-};
diff --git a/arch/arm/dts/dragonboard820c.dts b/arch/arm/dts/dragonboard820c.dts
index ad201d48749c..0d9c9f7a4922 100644
--- a/arch/arm/dts/dragonboard820c.dts
+++ b/arch/arm/dts/dragonboard820c.dts
@@ -109,12 +109,23 @@
#address-cells = <0x1>;
#size-cells = <0x1>;
- pm8994_pon: pm8994_pon@800 {
- compatible = "qcom,pm8994-pwrkey";
- reg = <0x800 0x96>;
- #gpio-cells = <2>;
- gpio-controller;
- gpio-bank-name="pm8994_key.";
+ pm8994_pon: pon@800 {
+ compatible = "qcom,pm8916-pon";
+ reg = <0x800 0x100>;
+ mode-bootloader = <0x2>;
+ mode-recovery = <0x1>;
+
+ pwrkey {
+ compatible =
"qcom,pm8941-pwrkey";
+ debounce = <15625>;
+ bias-pull-up;
+ };
+
+ pm8994_resin: resin {
+ compatible =
"qcom,pm8941-resin";
+ debounce = <15625>;
+ bias-pull-up;
+ };
};
pm8994_gpios: pm8994_gpios@c000 {
diff --git a/arch/arm/dts/dragonboard845c-uboot.dtsi
b/arch/arm/dts/dragonboard845c-uboot.dtsi
index 7728f4f4a3e5..775f45c0149f 100644
--- a/arch/arm/dts/dragonboard845c-uboot.dtsi
+++ b/arch/arm/dts/dragonboard845c-uboot.dtsi
@@ -24,14 +24,3 @@
};
};
};
-
-&pm8998_pon {
- key_vol_down {
- gpios = <&pm8998_pon 1 0>;
- label = "key_vol_down";
- };
- key_power {
- gpios = <&pm8998_pon 0 0>;
- label = "key_power";
- };
-};
diff --git a/arch/arm/dts/dragonboard845c.dts b/arch/arm/dts/dragonboard845c.dts
index b4f057ac6537..054f253eb32a 100644
--- a/arch/arm/dts/dragonboard845c.dts
+++ b/arch/arm/dts/dragonboard845c.dts
@@ -41,4 +41,8 @@
};
};
+&pm8998_resin {
+ status = "okay";
+};
+
#include "dragonboard845c-uboot.dtsi"
diff --git a/arch/arm/dts/sdm845.dtsi b/arch/arm/dts/sdm845.dtsi
index 4798ace0ff8b..cd5d890e9a45 100644
--- a/arch/arm/dts/sdm845.dtsi
+++ b/arch/arm/dts/sdm845.dtsi
@@ -78,12 +78,25 @@
#address-cells = <0x1>;
#size-cells = <0x1>;
- pm8998_pon: pm8998_pon@800 {
- compatible = "qcom,pm8998-pwrkey";
+ pm8998_pon: pon@800 {
+ compatible = "qcom,pm8998-pon";
+
reg = <0x800 0x100>;
- #gpio-cells = <2>;
- gpio-controller;
- gpio-bank-name = "pm8998_key.";
+ mode-bootloader = <0x2>;
+ mode-recovery = <0x1>;
+
+ pm8998_pwrkey: pwrkey {
+ compatible =
"qcom,pm8941-pwrkey";
+ debounce = <15625>;
+ bias-pull-up;
+ };
+
+ pm8998_resin: resin {
+ compatible =
"qcom,pm8941-resin";
+ debounce = <15625>;
+ bias-pull-up;
+ status = "disabled";
+ };
};
pm8998_gpios: pm8998_gpios@c000 {
diff --git a/arch/arm/dts/starqltechn-uboot.dtsi
b/arch/arm/dts/starqltechn-uboot.dtsi
index 034d5c1c07ed..55c6d18412ba 100644
--- a/arch/arm/dts/starqltechn-uboot.dtsi
+++ b/arch/arm/dts/starqltechn-uboot.dtsi
@@ -25,13 +25,3 @@
};
};
-&pm8998_pon {
- key_vol_down {
- gpios = <&pm8998_pon 1 0>;
- label = "key_vol_down";
- };
- key_power {
- gpios = <&pm8998_pon 0 0>;
- label = "key_power";
- };
-};
diff --git a/arch/arm/dts/starqltechn.dts b/arch/arm/dts/starqltechn.dts
index 5b6372bee79a..0842e19adb60 100644
--- a/arch/arm/dts/starqltechn.dts
+++ b/arch/arm/dts/starqltechn.dts
@@ -45,22 +45,6 @@
format = "a8r8g8b8";
};
- gpio-keys {
- compatible = "gpio-keys";
-
- key-pwr {
- label = "Power";
- linux,code = <KEY_ENTER>;
- gpios = <&pm8998_pon 0 GPIO_ACTIVE_LOW>;
- };
-
- key-vol-down {
- label = "Volume Down";
- linux,code = <KEY_DOWN>;
- gpios = <&pm8998_pon 1 GPIO_ACTIVE_LOW>;
- };
- };
-
soc: soc {
serial@a84000 {
status = "okay";
@@ -68,6 +52,10 @@
};
};
+&pm8998_resin {
+ status = "okay";
+};
+
&tlmm {
muic_i2c: muic-i2c-n {
pins = "GPIO_33", "GPIO_34";
diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
index 3c9f3bee3f18..ad6671081910 100644
--- a/arch/arm/mach-snapdragon/Kconfig
+++ b/arch/arm/mach-snapdragon/Kconfig
@@ -17,6 +17,7 @@ config SDM845
select LINUX_KERNEL_IMAGE_HEADER
imply CLK_QCOM_SDM845
imply PINCTRL_QCOM_SDM845
+ imply BUTTON_QCOM_PMIC
config LNX_KRNL_IMG_TEXT_OFFSET_BASE
default 0x80000000
@@ -30,6 +31,7 @@ config TARGET_DRAGONBOARD410C
select ENABLE_ARM_SOC_BOOT0_HOOK
imply CLK_QCOM_APQ8016
imply PINCTRL_QCOM_APQ8016
+ imply BUTTON_QCOM_PMIC
help
Support for 96Boards Dragonboard 410C. This board complies with
96Board Open Platform Specifications. Features:
@@ -45,6 +47,7 @@ config TARGET_DRAGONBOARD820C
bool "96Boards Dragonboard 820C"
imply CLK_QCOM_APQ8096
imply PINCTRL_QCOM_APQ8096
+ imply BUTTON_QCOM_PMIC
help
Support for 96Boards Dragonboard 820C. This board complies with
96Board Open Platform Specifications. Features:
diff --git a/arch/arm/mach-snapdragon/init_sdm845.c
b/arch/arm/mach-snapdragon/init_sdm845.c
index 1f8850239437..067acc9a6f44 100644
--- a/arch/arm/mach-snapdragon/init_sdm845.c
+++ b/arch/arm/mach-snapdragon/init_sdm845.c
@@ -5,6 +5,7 @@
* (C) Copyright 2021 Dzmitry Sankouski <dsankou...@gmail.com>
*/
+#include <button.h>
#include <init.h>
#include <env.h>
#include <common.h>
@@ -32,46 +33,18 @@ __weak int board_init(void)
/* Check for vol- and power buttons */
__weak int misc_init_r(void)
{
- struct udevice *pon;
- struct gpio_desc resin;
- int node, ret;
+ struct udevice *btn;
+ int ret;
+ enum button_state_t state;
- ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8998_pon@800", &pon);
+ ret = button_get_by_label("pwrkey", &btn);
if (ret < 0) {
- printf("Failed to find PMIC pon node. Check device tree\n");
- return 0;
+ printf("Couldn't find power button!\n");
+ return ret;
}
- node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
- "key_vol_down");
- if (node < 0) {
- printf("Failed to find key_vol_down node. Check device tree\n");
- return 0;
- }
- if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
- &resin, 0)) {
- printf("Failed to request key_vol_down button.\n");
- return 0;
- }
- if (dm_gpio_get_value(&resin)) {
- env_set("key_vol_down", "1");
- printf("Volume down button pressed\n");
- } else {
- env_set("key_vol_down", "0");
- }
-
- node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
- "key_power");
- if (node < 0) {
- printf("Failed to find key_power node. Check device tree\n");
- return 0;
- }
- if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
- &resin, 0)) {
- printf("Failed to request key_power button.\n");
- return 0;
- }
- if (dm_gpio_get_value(&resin)) {
+ state = button_get_state(btn);
+ if (state == BUTTON_ON) {
env_set("key_power", "1");
printf("Power button pressed\n");
} else {
diff --git a/board/qualcomm/dragonboard410c/dragonboard410c.c
b/board/qualcomm/dragonboard410c/dragonboard410c.c
index 371b3262f8c5..350e0e9e20aa 100644
--- a/board/qualcomm/dragonboard410c/dragonboard410c.c
+++ b/board/qualcomm/dragonboard410c/dragonboard410c.c
@@ -5,6 +5,7 @@
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikow...@gmail.com>
*/
+#include <button.h>
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
@@ -108,32 +109,20 @@ int board_usb_init(int index, enum usb_init_type init)
/* Check for vol- button - if pressed - stop autoboot */
int misc_init_r(void)
{
- struct udevice *pon;
- struct gpio_desc resin;
- int node, ret;
+ struct udevice *btn;
+ int ret;
+ enum button_state_t state;
- ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
+ ret = button_get_by_label("vol_down", &btn);
if (ret < 0) {
- printf("Failed to find PMIC pon node. Check device tree\n");
- return 0;
+ printf("Couldn't find power button!\n");
+ return ret;
}
- node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
- "key_vol_down");
- if (node < 0) {
- printf("Failed to find key_vol_down node. Check device tree\n");
- return 0;
- }
-
- if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
- &resin, 0)) {
- printf("Failed to request key_vol_down button.\n");
- return 0;
- }
-
- if (dm_gpio_get_value(&resin)) {
+ state = button_get_state(btn);
+ if (state == BUTTON_ON) {
env_set("preboot", "setenv preboot; fastboot 0");
- printf("key_vol_down pressed - Starting fastboot.\n");
+ printf("vol_down pressed - Starting fastboot.\n");
}
return 0;
diff --git a/board/qualcomm/dragonboard820c/dragonboard820c.c
b/board/qualcomm/dragonboard820c/dragonboard820c.c
index 6785bf58e949..2f0db628368b 100644
--- a/board/qualcomm/dragonboard820c/dragonboard820c.c
+++ b/board/qualcomm/dragonboard820c/dragonboard820c.c
@@ -5,6 +5,7 @@
* (C) Copyright 2017 Jorge Ramirez-Ortiz <jorge.ramirez-or...@linaro.org>
*/
+#include <button.h>
#include <cpu_func.h>
#include <init.h>
#include <env.h>
@@ -139,30 +140,18 @@ void reset_cpu(void)
/* Check for vol- button - if pressed - stop autoboot */
int misc_init_r(void)
{
- struct udevice *pon;
- struct gpio_desc resin;
- int node, ret;
+ struct udevice *btn;
+ int ret;
+ enum button_state_t state;
- ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8994_pon@800", &pon);
+ ret = button_get_by_label("pwrkey", &btn);
if (ret < 0) {
- printf("Failed to find PMIC pon node. Check device tree\n");
- return 0;
+ printf("Couldn't find power button!\n");
+ return ret;
}
- node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
- "key_vol_down");
- if (node < 0) {
- printf("Failed to find key_vol_down node. Check device tree\n");
- return 0;
- }
-
- if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
- &resin, 0)) {
- printf("Failed to request key_vol_down button.\n");
- return 0;
- }
-
- if (dm_gpio_get_value(&resin)) {
+ state = button_get_state(btn);
+ if (state == BUTTON_ON) {
env_set("bootdelay", "-1");
printf("Power button pressed - dropping to console.\n");
}
diff --git a/drivers/button/Kconfig b/drivers/button/Kconfig
index 8ce2de37d62a..097b05f822e7 100644
--- a/drivers/button/Kconfig
+++ b/drivers/button/Kconfig
@@ -27,4 +27,13 @@ config BUTTON_GPIO
The GPIO driver must used driver model. Buttons are configured using
the device tree.
+config BUTTON_QCOM_PMIC
+ bool "Qualcomm power button"
+ depends on BUTTON
+ depends on PMIC_QCOM
+ help
+ Enable support for the power and "resin" (usually volume down) buttons
+ on Qualcomm SoCs. These will be configured as the Enter and Down keys
+ respectively, allowing navigation of bootmenu with buttons on device.
+
endmenu
diff --git a/drivers/button/Makefile b/drivers/button/Makefile
index bbd18af14940..68555081a47a 100644
--- a/drivers/button/Makefile
+++ b/drivers/button/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_BUTTON) += button-uclass.o
obj-$(CONFIG_BUTTON_ADC) += button-adc.o
obj-$(CONFIG_BUTTON_GPIO) += button-gpio.o
+obj-$(CONFIG_BUTTON_QCOM_PMIC) += button-qcom-pmic.o
\ No newline at end of file
diff --git a/drivers/button/button-qcom-pmic.c
b/drivers/button/button-qcom-pmic.c
new file mode 100644
index 000000000000..34a976d1e6c6
--- /dev/null
+++ b/drivers/button/button-qcom-pmic.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Qualcomm generic pmic gpio driver
+ *
+ * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikow...@gmail.com>
+ * (C) Copyright 2023 Linaro Ltd.
+ */
+
+#include <button.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <log.h>
+#include <power/pmic.h>
+#include <spmi/spmi.h>
+#include <linux/bitops.h>
+
+#define REG_TYPE 0x4
+#define REG_SUBTYPE 0x5
+
+struct qcom_pmic_btn_priv {
+ u32 base;
+ u32 status_bit;
+ int code;
+ struct udevice *pmic;
+};
+
+#define PON_INT_RT_STS 0x10
+#define KPDPWR_ON_INT_BIT 0
+#define RESIN_ON_INT_BIT 1
+
+#define NODE_IS_PWRKEY(node) (!strncmp(ofnode_get_name(node), "pwrkey",
strlen("pwrkey")))
+#define NODE_IS_RESIN(node) (!strncmp(ofnode_get_name(node), "resin",
strlen("resin")))
+
+static enum button_state_t qcom_pwrkey_get_state(struct udevice *dev)
+{
+ struct qcom_pmic_btn_priv *priv = dev_get_priv(dev);
+
+ int reg = pmic_reg_read(priv->pmic, priv->base + PON_INT_RT_STS);
+
+ if (reg < 0)
+ return 0;
+
+ return (reg & BIT(priv->status_bit)) != 0;
+}
+
+static int qcom_pwrkey_get_code(struct udevice *dev)
+{
+ struct qcom_pmic_btn_priv *priv = dev_get_priv(dev);
+
+ return priv->code;
+}
+
+static int qcom_pwrkey_probe(struct udevice *dev)
+{
+ struct button_uc_plat *uc_plat = dev_get_uclass_plat(dev);
+ struct qcom_pmic_btn_priv *priv = dev_get_priv(dev);
+ ofnode node = dev_ofnode(dev);
+ int ret;
+ u64 base;
+
+ /* Ignore the top-level pon node */
+ if (!uc_plat->label)
+ return 0;
+
+ /* the pwrkey and resin nodes are children of the "pon" node, get the
+ * PMIC device to use in pmic_reg_* calls.
+ */
+ priv->pmic = dev->parent->parent;
+
+ /* Get the address of the parent pon node */
+ base = dev_read_addr(dev->parent);
+ if (base == FDT_ADDR_T_NONE) {
+ printf("%s: Can't find address\n", dev->name);
+ return -EINVAL;
+ }
+
+ priv->base = base;
+
+ /* Do a sanity check */
+ ret = pmic_reg_read(priv->pmic, priv->base + REG_TYPE);
+ if (ret != 0x1 && ret != 0xb) {
+ printf("%s: unexpected PMIC function type %d\n", dev->name,
ret);
+ return -ENXIO;
+ }
+
+ ret = pmic_reg_read(priv->pmic, priv->base + REG_SUBTYPE);
+ if ((ret & 0x7) == 0) {
+ printf("%s: unexpected PMCI function subtype %d\n", dev->name,
ret);
+ return -ENXIO;
+ }
+
+ if (NODE_IS_PWRKEY(node)) {
+ priv->status_bit = 0;
+ priv->code = KEY_ENTER;
+ } else if (NODE_IS_RESIN(node)) {
+ priv->status_bit = 1;
+ priv->code = KEY_DOWN;
+ } else {
+ /* Should not get here! */
+ printf("Invalid pon node '%s' should be 'pwrkey' or 'resin'\n",
+ ofnode_get_name(node));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int button_qcom_pmic_bind(struct udevice *parent)
+{
+ struct udevice *dev;
+ ofnode node;
+ int ret;
+
+ dev_for_each_subnode(node, parent) {
+ struct button_uc_plat *uc_plat;
+ const char *label;
+
+ if (!ofnode_is_enabled(node))
+ continue;
+
+ ret = device_bind_driver_to_node(parent, "qcom_pwrkey",
+ ofnode_get_name(node),
+ node, &dev);
+ if (ret) {
+ printf("Failed to bind %s! %d\n", label, ret);
+ return ret;
+ }
+ uc_plat = dev_get_uclass_plat(dev);
+ if (NODE_IS_PWRKEY(node)) {
+ uc_plat->label = "pwrkey";
+ } else if (NODE_IS_RESIN(node)) {
+ uc_plat->label = "vol_down";
+ } else {
+ printf("Unknown button node '%s' should be 'pwrkey' or
'resin'\n",
+ ofnode_get_name(node));
+ device_unbind(dev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct button_ops button_qcom_pmic_ops = {
+ .get_state = qcom_pwrkey_get_state,
+ .get_code = qcom_pwrkey_get_code,
+};
+
+static const struct udevice_id qcom_pwrkey_ids[] = {
+ { .compatible = "qcom,pm8916-pon" },
+ { .compatible = "qcom,pm8941-pon" },
+ { .compatible = "qcom,pm8998-pon" },
+ { }
+};
+
+U_BOOT_DRIVER(qcom_pwrkey) = {
+ .name = "qcom_pwrkey",
+ .id = UCLASS_BUTTON,
+ .of_match = qcom_pwrkey_ids,
+ .bind = button_qcom_pmic_bind,
+ .probe = qcom_pwrkey_probe,
+ .ops = &button_qcom_pmic_ops,
+ .priv_auto = sizeof(struct qcom_pmic_btn_priv),
+};
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index ba42b0768e12..fbf77673c5e0 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -309,12 +309,13 @@ config CMD_PCA953X
config QCOM_PMIC_GPIO
bool "Qualcomm generic PMIC GPIO/keypad driver"
depends on DM_GPIO && PMIC_QCOM
+ select BUTTON
help
Support for GPIO pins and power/reset buttons found on
Qualcomm SoCs PMIC.
Default name for GPIO bank is "pm8916".
Power and reset buttons are placed in "pwkey_qcom" bank and
- have gpio numbers 0 and 1 respectively.
+ have gpio numbers 0 and 1 respectively.
config PCF8575_GPIO
bool "PCF8575 I2C GPIO Expander driver"
diff --git a/drivers/gpio/qcom_pmic_gpio.c b/drivers/gpio/qcom_pmic_gpio.c
index e5841f502953..7b83c67fa464 100644
--- a/drivers/gpio/qcom_pmic_gpio.c
+++ b/drivers/gpio/qcom_pmic_gpio.c
@@ -275,107 +275,3 @@ U_BOOT_DRIVER(qcom_pmic_gpio) = {
.priv_auto = sizeof(struct qcom_gpio_bank),
};
-
-/* Add pmic buttons as GPIO as well - there is no generic way for now */
-#define PON_INT_RT_STS 0x10
-#define KPDPWR_ON_INT_BIT 0
-#define RESIN_ON_INT_BIT 1
-
-static int qcom_pwrkey_get_function(struct udevice *dev, unsigned offset)
-{
- return GPIOF_INPUT;
-}
-
-static int qcom_pwrkey_get_value(struct udevice *dev, unsigned offset)
-{
- struct qcom_gpio_bank *priv = dev_get_priv(dev);
-
- int reg = pmic_reg_read(dev->parent, priv->pid + PON_INT_RT_STS);
-
- if (reg < 0)
- return 0;
-
- switch (offset) {
- case 0: /* Power button */
- return (reg & BIT(KPDPWR_ON_INT_BIT)) != 0;
- break;
- case 1: /* Reset button */
- default:
- return (reg & BIT(RESIN_ON_INT_BIT)) != 0;
- break;
- }
-}
-
-/*
- * Since pmic buttons modelled as GPIO, we need empty direction functions
- * to trick u-boot button driver
- */
-static int qcom_pwrkey_direction_input(struct udevice *dev, unsigned int
offset)
-{
- return 0;
-}
-
-static int qcom_pwrkey_direction_output(struct udevice *dev, unsigned int
offset, int value)
-{
- return -EOPNOTSUPP;
-}
-
-static const struct dm_gpio_ops qcom_pwrkey_ops = {
- .get_value = qcom_pwrkey_get_value,
- .get_function = qcom_pwrkey_get_function,
- .direction_input = qcom_pwrkey_direction_input,
- .direction_output = qcom_pwrkey_direction_output,
-};
-
-static int qcom_pwrkey_probe(struct udevice *dev)
-{
- struct qcom_gpio_bank *priv = dev_get_priv(dev);
- int reg;
- u64 pid;
-
- pid = dev_read_addr(dev);
- if (pid == FDT_ADDR_T_NONE)
- return log_msg_ret("bad address", -EINVAL);
-
- priv->pid = pid;
-
- /* Do a sanity check */
- reg = pmic_reg_read(dev->parent, priv->pid + REG_TYPE);
- if (reg != 0x1)
- return log_msg_ret("bad type", -ENXIO);
-
- reg = pmic_reg_read(dev->parent, priv->pid + REG_SUBTYPE);
- if ((reg & 0x5) == 0)
- return log_msg_ret("bad subtype", -ENXIO);
-
- return 0;
-}
-
-static int qcom_pwrkey_of_to_plat(struct udevice *dev)
-{
- struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
-
- uc_priv->gpio_count = 2;
- uc_priv->bank_name = dev_read_string(dev, "gpio-bank-name");
- if (uc_priv->bank_name == NULL)
- uc_priv->bank_name = "pwkey_qcom";
-
- return 0;
-}
-
-static const struct udevice_id qcom_pwrkey_ids[] = {
- { .compatible = "qcom,pm8916-pwrkey" },
- { .compatible = "qcom,pm8994-pwrkey" },
- { .compatible = "qcom,pm8998-pwrkey" },
- { }
-};
-
-U_BOOT_DRIVER(pwrkey_qcom) = {
- .name = "pwrkey_qcom",
- .id = UCLASS_GPIO,
- .of_match = qcom_pwrkey_ids,
- .of_to_plat = qcom_pwrkey_of_to_plat,
- .probe = qcom_pwrkey_probe,
- .ops = &qcom_pwrkey_ops,
- .priv_auto = sizeof(struct qcom_gpio_bank),
-};
--
2.42.1
