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pinctrl: mediatek: Add EINT support to MTK pinctrl driver.

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MTK SoC support external interrupt(EINT) from most SoC pins.
Add EINT support to pinctrl driver.

Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com>
Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Maoguang Meng
2015-01-21 13:28:16 +08:00
committed by Linus Walleij
parent a6df410d42
commit d9819eb9cd
3 changed files with 435 additions and 2 deletions
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35
drivers/pinctrl/mediatek/pinctrl-mtk-common.h
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@@ -16,10 +16,16 @@
#define __PINCTRL_MTK_COMMON_H
#include <linux/pinctrl/pinctrl.h>
#include <linux/spinlock.h>
#include <linux/regmap.h>
#define NO_EINT_SUPPORT 255
#define MTK_CHIP_TYPE_BASE 0
#define MTK_CHIP_TYPE_PMIC 1
#define MT_EDGE_SENSITIVE 0
#define MT_LEVEL_SENSITIVE 1
#define EINT_DBNC_SET_DBNC_BITS 4
#define EINT_DBNC_RST_BIT (0x1 << 1)
#define EINT_DBNC_SET_EN (0x1 << 0)
struct mtk_desc_function {
const char *name;
@@ -115,6 +121,27 @@ struct mtk_pin_drv_grp {
.grp = _grp, \
}
struct mtk_eint_offsets {
const char *name;
unsigned int stat;
unsigned int ack;
unsigned int mask;
unsigned int mask_set;
unsigned int mask_clr;
unsigned int sens;
unsigned int sens_set;
unsigned int sens_clr;
unsigned int pol;
unsigned int pol_set;
unsigned int pol_clr;
unsigned int dom_en;
unsigned int dbnc_ctrl;
unsigned int dbnc_set;
unsigned int dbnc_clr;
u8 port_mask;
u8 ports;
};
/**
* struct mtk_pinctrl_devdata - Provide HW GPIO related data.
* @pins: An array describing all pins the pin controller affects.
@@ -165,6 +192,10 @@ struct mtk_pinctrl_devdata {
unsigned char port_shf;
unsigned char port_mask;
unsigned char port_align;
unsigned char chip_type;
struct mtk_eint_offsets eint_offsets;
unsigned int ap_num;
unsigned int db_cnt;
};
struct mtk_pinctrl {
@@ -177,6 +208,8 @@ struct mtk_pinctrl {
const char **grp_names;
struct pinctrl_dev *pctl_dev;
const struct mtk_pinctrl_devdata *devdata;
void __iomem *eint_reg_base;
struct irq_domain *domain;
};
int mtk_pctrl_init(struct platform_device *pdev,