On Wed, 2017-08-02 at 12:33 +0200, Matthias Brugger wrote:

On 08/02/2017 05:17 AM, Chen Zhong wrote:

quoted

This patch add support to handle MediaTek PMIC MT6397/MT6323 key
interrupts including pwrkey and homekey, also add setting for
long press key shutdown behavior.

Signed-off-by: Chen Zhong <redacted>
---
  drivers/input/keyboard/mtk-pmic-keys.c |  320 ++++++++++++++++++++++++++++++++
  1 file changed, 320 insertions(+)
  create mode 100644 drivers/input/keyboard/mtk-pmic-keys.c

diff --git a/drivers/input/keyboard/mtk-pmic-keys.c b/drivers/input/keyboard/mtk-pmic-keys.c
new file mode 100644
index 0000000..0ea7d17
--- /dev/null
+++ b/drivers/input/keyboard/mtk-pmic-keys.c

@@ -0,0 +1,320 @@
+/*
+ * Copyright (C) 2017 MediaTek, Inc.
+ *
+ * Author: Chen Zhong <chen.zhong@mediatek.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that 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/ioctl.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/mt6323/registers.h>
+#include <linux/mfd/mt6397/registers.h>
+#include <linux/mfd/mt6397/core.h>
+#include <linux/slab.h>
+#include <linux/irqdomain.h>
+
+#define PWRKEY_RST_EN_MASK  0x1
+#define PWRKEY_RST_EN_SHIFT  6
+#define HOMEKEY_RST_EN_MASK  0x1
+#define HOMEKEY_RST_EN_SHIFT  5
+#define RST_DU_MASK  0x3
+#define RST_DU_SHIFT  8
+
+struct pmic_keys_regs {
+	u32 deb_reg;
+	u32 deb_mask;
+	u32 intsel_reg;
+	u32 intsel_mask;
+};
+
+#define PMIC_KEYS_REGS(_deb_reg, _deb_mask, _intsel_reg, _intsel_mask)	\
+{									\
+	.deb_reg		= _deb_reg,				\
+	.deb_mask		= _deb_mask,				\
+	.intsel_reg		= _intsel_reg,				\
+	.intsel_mask		= _intsel_mask,				\
+}
+
+struct pmic_regs {
+	const struct pmic_keys_regs pwrkey_regs;
+	const struct pmic_keys_regs homekey_regs;
+	u32 pmic_rst_reg;
+};
+
+static const struct pmic_regs mt6397_regs = {
+	.pwrkey_regs = PMIC_KEYS_REGS(MT6397_CHRSTATUS,
+		0x8, MT6397_INT_RSV, 0x10),
+	.homekey_regs = PMIC_KEYS_REGS(MT6397_OCSTATUS2,
+		0x10, MT6397_INT_RSV, 0x8),
+	.pmic_rst_reg = MT6397_TOP_RST_MISC,
+};
+
+static const struct pmic_regs mt6323_regs = {
+	.pwrkey_regs = PMIC_KEYS_REGS(MT6323_CHRSTATUS,
+		0x2, MT6323_INT_MISC_CON, 0x10),
+	.homekey_regs = PMIC_KEYS_REGS(MT6323_CHRSTATUS,
+		0x4, MT6323_INT_MISC_CON, 0x8),
+	.pmic_rst_reg = MT6323_TOP_RST_MISC,
+};

Where are this MTxxxx_CHRSTATUS defined?

Hi Matthias,

They are defined in "linux/mfd/mt63xx/registers.h".

Regards,
Matthias