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pinctrl: mediatek: add ies/smt control to common code.

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Input enable and smt setting have different register,
modify code to fix it.

Several mediatek soc use similar input enable/smt setting
procedure as mt8173, some soc use generic input enable/smt
setting, some soc has no input enable/smt setting. Adding
common code to handle all those cases, so future soc driver
can use it.

Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Hongzhou Yang 2015-05-18 23:11:16 -07:00 committed by Linus Walleij
parent e73fe2713f
commit 25d76b21b1
3 changed files with 198 additions and 116 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

201
drivers/pinctrl/mediatek/pinctrl-mt8173.c
View File

@ -18,6 +18,7 @@
#include <linux/of_device.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/regmap.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <dt-bindings/pinctrl/mt65xx.h>
#include "pinctrl-mtk-common.h"
@ -25,28 +26,6 @@
#define DRV_BASE 0xb00
/**
* struct mtk_pin_ies_smt_set - For special pins' ies and smt setting.
* @start: The start pin number of those special pins.
* @end: The end pin number of those special pins.
* @offset: The offset of special setting register.
* @bit: The bit of special setting register.
*/
struct mtk_pin_ies_smt_set {
unsigned int start;
unsigned int end;
unsigned int offset;
unsigned char bit;
};
#define MTK_PIN_IES_SMT_SET(_start, _end, _offset, _bit) \
{ \
.start = _start, \
.end = _end, \
.bit = _bit, \
.offset = _offset, \
}
static const struct mtk_pin_spec_pupd_set_samereg mt8173_spec_pupd[] = {
MTK_PIN_PUPD_SPEC_SR(119, 0xe00, 2, 1, 0), /* KROW0 */
MTK_PIN_PUPD_SPEC_SR(120, 0xe00, 6, 5, 4), /* KROW1 */
@ -97,80 +76,114 @@ static int mt8173_spec_pull_set(struct regmap *regmap, unsigned int pin,
ARRAY_SIZE(mt8173_spec_pupd), pin, align, isup, r1r0);
}
static const struct mtk_pin_ies_smt_set mt8173_ies_smt_set[] = {
MTK_PIN_IES_SMT_SET(0, 4, 0x930, 1),
MTK_PIN_IES_SMT_SET(5, 9, 0x930, 2),
MTK_PIN_IES_SMT_SET(10, 13, 0x930, 10),
MTK_PIN_IES_SMT_SET(14, 15, 0x940, 10),
MTK_PIN_IES_SMT_SET(16, 16, 0x930, 0),
MTK_PIN_IES_SMT_SET(17, 17, 0x950, 2),
MTK_PIN_IES_SMT_SET(18, 21, 0x940, 3),
MTK_PIN_IES_SMT_SET(29, 32, 0x930, 3),
MTK_PIN_IES_SMT_SET(33, 33, 0x930, 4),
MTK_PIN_IES_SMT_SET(34, 36, 0x930, 5),
MTK_PIN_IES_SMT_SET(37, 38, 0x930, 6),
MTK_PIN_IES_SMT_SET(39, 39, 0x930, 7),
MTK_PIN_IES_SMT_SET(40, 41, 0x930, 9),
MTK_PIN_IES_SMT_SET(42, 42, 0x940, 0),
MTK_PIN_IES_SMT_SET(43, 44, 0x930, 11),
MTK_PIN_IES_SMT_SET(45, 46, 0x930, 12),
MTK_PIN_IES_SMT_SET(57, 64, 0xc20, 13),
MTK_PIN_IES_SMT_SET(65, 65, 0xc10, 13),
MTK_PIN_IES_SMT_SET(66, 66, 0xc00, 13),
MTK_PIN_IES_SMT_SET(67, 67, 0xd10, 13),
MTK_PIN_IES_SMT_SET(68, 68, 0xd00, 13),
MTK_PIN_IES_SMT_SET(69, 72, 0x940, 14),
MTK_PIN_IES_SMT_SET(73, 76, 0xc60, 13),
MTK_PIN_IES_SMT_SET(77, 77, 0xc40, 13),
MTK_PIN_IES_SMT_SET(78, 78, 0xc50, 13),
MTK_PIN_IES_SMT_SET(79, 82, 0x940, 15),
MTK_PIN_IES_SMT_SET(83, 83, 0x950, 0),
MTK_PIN_IES_SMT_SET(84, 85, 0x950, 1),
MTK_PIN_IES_SMT_SET(86, 91, 0x950, 2),
MTK_PIN_IES_SMT_SET(92, 92, 0x930, 13),
MTK_PIN_IES_SMT_SET(93, 95, 0x930, 14),
MTK_PIN_IES_SMT_SET(96, 99, 0x930, 15),
MTK_PIN_IES_SMT_SET(100, 103, 0xca0, 13),
MTK_PIN_IES_SMT_SET(104, 104, 0xc80, 13),
MTK_PIN_IES_SMT_SET(105, 105, 0xc90, 13),
MTK_PIN_IES_SMT_SET(106, 107, 0x940, 4),
MTK_PIN_IES_SMT_SET(108, 112, 0x940, 1),
MTK_PIN_IES_SMT_SET(113, 116, 0x940, 2),
MTK_PIN_IES_SMT_SET(117, 118, 0x940, 5),
MTK_PIN_IES_SMT_SET(119, 124, 0x940, 6),
MTK_PIN_IES_SMT_SET(125, 126, 0x940, 7),
MTK_PIN_IES_SMT_SET(127, 127, 0x940, 0),
MTK_PIN_IES_SMT_SET(128, 128, 0x950, 8),
MTK_PIN_IES_SMT_SET(129, 130, 0x950, 9),
MTK_PIN_IES_SMT_SET(131, 132, 0x950, 8),
MTK_PIN_IES_SMT_SET(133, 134, 0x910, 8)
static const struct mtk_pin_ies_smt_set mt8173_smt_set[] = {
MTK_PIN_IES_SMT_SPEC(0, 4, 0x930, 1),
MTK_PIN_IES_SMT_SPEC(5, 9, 0x930, 2),
MTK_PIN_IES_SMT_SPEC(10, 13, 0x930, 10),
MTK_PIN_IES_SMT_SPEC(14, 15, 0x940, 10),
MTK_PIN_IES_SMT_SPEC(16, 16, 0x930, 0),
MTK_PIN_IES_SMT_SPEC(17, 17, 0x950, 2),
MTK_PIN_IES_SMT_SPEC(18, 21, 0x940, 3),
MTK_PIN_IES_SMT_SPEC(29, 32, 0x930, 3),
MTK_PIN_IES_SMT_SPEC(33, 33, 0x930, 4),
MTK_PIN_IES_SMT_SPEC(34, 36, 0x930, 5),
MTK_PIN_IES_SMT_SPEC(37, 38, 0x930, 6),
MTK_PIN_IES_SMT_SPEC(39, 39, 0x930, 7),
MTK_PIN_IES_SMT_SPEC(40, 41, 0x930, 9),
MTK_PIN_IES_SMT_SPEC(42, 42, 0x940, 0),
MTK_PIN_IES_SMT_SPEC(43, 44, 0x930, 11),
MTK_PIN_IES_SMT_SPEC(45, 46, 0x930, 12),
MTK_PIN_IES_SMT_SPEC(57, 64, 0xc20, 13),
MTK_PIN_IES_SMT_SPEC(65, 65, 0xc10, 13),
MTK_PIN_IES_SMT_SPEC(66, 66, 0xc00, 13),
MTK_PIN_IES_SMT_SPEC(67, 67, 0xd10, 13),
MTK_PIN_IES_SMT_SPEC(68, 68, 0xd00, 13),
MTK_PIN_IES_SMT_SPEC(69, 72, 0x940, 14),
MTK_PIN_IES_SMT_SPEC(73, 76, 0xc60, 13),
MTK_PIN_IES_SMT_SPEC(77, 77, 0xc40, 13),
MTK_PIN_IES_SMT_SPEC(78, 78, 0xc50, 13),
MTK_PIN_IES_SMT_SPEC(79, 82, 0x940, 15),
MTK_PIN_IES_SMT_SPEC(83, 83, 0x950, 0),
MTK_PIN_IES_SMT_SPEC(84, 85, 0x950, 1),
MTK_PIN_IES_SMT_SPEC(86, 91, 0x950, 2),
MTK_PIN_IES_SMT_SPEC(92, 92, 0x930, 13),
MTK_PIN_IES_SMT_SPEC(93, 95, 0x930, 14),
MTK_PIN_IES_SMT_SPEC(96, 99, 0x930, 15),
MTK_PIN_IES_SMT_SPEC(100, 103, 0xca0, 13),
MTK_PIN_IES_SMT_SPEC(104, 104, 0xc80, 13),
MTK_PIN_IES_SMT_SPEC(105, 105, 0xc90, 13),
MTK_PIN_IES_SMT_SPEC(106, 107, 0x940, 4),
MTK_PIN_IES_SMT_SPEC(108, 112, 0x940, 1),
MTK_PIN_IES_SMT_SPEC(113, 116, 0x940, 2),
MTK_PIN_IES_SMT_SPEC(117, 118, 0x940, 5),
MTK_PIN_IES_SMT_SPEC(119, 124, 0x940, 6),
MTK_PIN_IES_SMT_SPEC(125, 126, 0x940, 7),
MTK_PIN_IES_SMT_SPEC(127, 127, 0x940, 0),
MTK_PIN_IES_SMT_SPEC(128, 128, 0x950, 8),
MTK_PIN_IES_SMT_SPEC(129, 130, 0x950, 9),
MTK_PIN_IES_SMT_SPEC(131, 132, 0x950, 8),
MTK_PIN_IES_SMT_SPEC(133, 134, 0x910, 8)
};
static int spec_ies_smt_set(struct regmap *regmap, unsigned int pin,
unsigned char align, int value)
static const struct mtk_pin_ies_smt_set mt8173_ies_set[] = {
MTK_PIN_IES_SMT_SPEC(0, 4, 0x900, 1),
MTK_PIN_IES_SMT_SPEC(5, 9, 0x900, 2),
MTK_PIN_IES_SMT_SPEC(10, 13, 0x900, 10),
MTK_PIN_IES_SMT_SPEC(14, 15, 0x910, 10),
MTK_PIN_IES_SMT_SPEC(16, 16, 0x900, 0),
MTK_PIN_IES_SMT_SPEC(17, 17, 0x920, 2),
MTK_PIN_IES_SMT_SPEC(18, 21, 0x910, 3),
MTK_PIN_IES_SMT_SPEC(29, 32, 0x900, 3),
MTK_PIN_IES_SMT_SPEC(33, 33, 0x900, 4),
MTK_PIN_IES_SMT_SPEC(34, 36, 0x900, 5),
MTK_PIN_IES_SMT_SPEC(37, 38, 0x900, 6),
MTK_PIN_IES_SMT_SPEC(39, 39, 0x900, 7),
MTK_PIN_IES_SMT_SPEC(40, 41, 0x900, 9),
MTK_PIN_IES_SMT_SPEC(42, 42, 0x910, 0),
MTK_PIN_IES_SMT_SPEC(43, 44, 0x900, 11),
MTK_PIN_IES_SMT_SPEC(45, 46, 0x900, 12),
MTK_PIN_IES_SMT_SPEC(57, 64, 0xc20, 14),
MTK_PIN_IES_SMT_SPEC(65, 65, 0xc10, 14),
MTK_PIN_IES_SMT_SPEC(66, 66, 0xc00, 14),
MTK_PIN_IES_SMT_SPEC(67, 67, 0xd10, 14),
MTK_PIN_IES_SMT_SPEC(68, 68, 0xd00, 14),
MTK_PIN_IES_SMT_SPEC(69, 72, 0x910, 14),
MTK_PIN_IES_SMT_SPEC(73, 76, 0xc60, 14),
MTK_PIN_IES_SMT_SPEC(77, 77, 0xc40, 14),
MTK_PIN_IES_SMT_SPEC(78, 78, 0xc50, 14),
MTK_PIN_IES_SMT_SPEC(79, 82, 0x910, 15),
MTK_PIN_IES_SMT_SPEC(83, 83, 0x920, 0),
MTK_PIN_IES_SMT_SPEC(84, 85, 0x920, 1),
MTK_PIN_IES_SMT_SPEC(86, 91, 0x920, 2),
MTK_PIN_IES_SMT_SPEC(92, 92, 0x900, 13),
MTK_PIN_IES_SMT_SPEC(93, 95, 0x900, 14),
MTK_PIN_IES_SMT_SPEC(96, 99, 0x900, 15),
MTK_PIN_IES_SMT_SPEC(100, 103, 0xca0, 14),
MTK_PIN_IES_SMT_SPEC(104, 104, 0xc80, 14),
MTK_PIN_IES_SMT_SPEC(105, 105, 0xc90, 14),
MTK_PIN_IES_SMT_SPEC(106, 107, 0x91, 4),
MTK_PIN_IES_SMT_SPEC(108, 112, 0x910, 1),
MTK_PIN_IES_SMT_SPEC(113, 116, 0x910, 2),
MTK_PIN_IES_SMT_SPEC(117, 118, 0x910, 5),
MTK_PIN_IES_SMT_SPEC(119, 124, 0x910, 6),
MTK_PIN_IES_SMT_SPEC(125, 126, 0x910, 7),
MTK_PIN_IES_SMT_SPEC(127, 127, 0x910, 0),
MTK_PIN_IES_SMT_SPEC(128, 128, 0x920, 8),
MTK_PIN_IES_SMT_SPEC(129, 130, 0x920, 9),
MTK_PIN_IES_SMT_SPEC(131, 132, 0x920, 8),
MTK_PIN_IES_SMT_SPEC(133, 134, 0x910, 8)
};
static int mt8173_ies_smt_set(struct regmap *regmap, unsigned int pin,
unsigned char align, int value, enum pin_config_param arg)
{
unsigned int i, reg_addr, bit;
bool find = false;
for (i = 0; i < ARRAY_SIZE(mt8173_ies_smt_set); i++) {
if (pin >= mt8173_ies_smt_set[i].start &&
pin <= mt8173_ies_smt_set[i].end) {
find = true;
break;
}
}
if (!find)
return -EINVAL;
if (value)
reg_addr = mt8173_ies_smt_set[i].offset + align;
else
reg_addr = mt8173_ies_smt_set[i].offset + (align << 1);
bit = BIT(mt8173_ies_smt_set[i].bit);
regmap_write(regmap, reg_addr, bit);
return 0;
if (arg == PIN_CONFIG_INPUT_ENABLE)
return mtk_pconf_spec_set_ies_smt_range(regmap, mt8173_ies_set,
ARRAY_SIZE(mt8173_ies_set), pin, align, value);
else if (arg == PIN_CONFIG_INPUT_SCHMITT_ENABLE)
return mtk_pconf_spec_set_ies_smt_range(regmap, mt8173_smt_set,
ARRAY_SIZE(mt8173_smt_set), pin, align, value);
return -EINVAL;
}
static const struct mtk_drv_group_desc mt8173_drv_grp[] = {
@ -307,7 +320,7 @@ static const struct mtk_pinctrl_devdata mt8173_pinctrl_data = {
.pin_drv_grp = mt8173_pin_drv,
.n_pin_drv_grps = ARRAY_SIZE(mt8173_pin_drv),
.spec_pull_set = mt8173_spec_pull_set,
.spec_ies_smt_set = spec_ies_smt_set,
.spec_ies_smt_set = mt8173_ies_smt_set,
.dir_offset = 0x0000,
.pullen_offset = 0x0100,
.pullsel_offset = 0x0200,

82
drivers/pinctrl/mediatek/pinctrl-mtk-common.c
View File

@ -107,28 +107,38 @@ static void mtk_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
regmap_write(mtk_get_regmap(pctl, offset), reg_addr, bit);
}
static void mtk_pconf_set_ies_smt(struct mtk_pinctrl *pctl, unsigned pin,
int value, enum pin_config_param param)
static int mtk_pconf_set_ies_smt(struct mtk_pinctrl *pctl, unsigned pin,
int value, enum pin_config_param arg)
{
unsigned int reg_addr, offset;
unsigned int bit;
int ret;
/**
* Due to some soc are not support ies/smt config, add this special
* control to handle it.
*/
if (!pctl->devdata->spec_ies_smt_set &&
pctl->devdata->ies_offset == MTK_PINCTRL_NOT_SUPPORT &&
arg == PIN_CONFIG_INPUT_ENABLE)
return -EINVAL;
if (!pctl->devdata->spec_ies_smt_set &&
pctl->devdata->smt_offset == MTK_PINCTRL_NOT_SUPPORT &&
arg == PIN_CONFIG_INPUT_SCHMITT_ENABLE)
return -EINVAL;
/*
* Due to some pins are irregular, their input enable and smt
* control register are discontinuous, but they are mapping together.
* So we need this special handle.
* control register are discontinuous, so we need this special handle.
*/
if (pctl->devdata->spec_ies_smt_set) {
ret = pctl->devdata->spec_ies_smt_set(mtk_get_regmap(pctl, pin),
pin, pctl->devdata->port_align, value);
if (!ret)
return;
return pctl->devdata->spec_ies_smt_set(mtk_get_regmap(pctl, pin),
pin, pctl->devdata->port_align, value, arg);
}
bit = BIT(pin & 0xf);
if (param == PIN_CONFIG_INPUT_ENABLE)
if (arg == PIN_CONFIG_INPUT_ENABLE)
offset = pctl->devdata->ies_offset;
else
offset = pctl->devdata->smt_offset;
@ -139,6 +149,33 @@ static void mtk_pconf_set_ies_smt(struct mtk_pinctrl *pctl, unsigned pin,
reg_addr = CLR_ADDR(mtk_get_port(pctl, pin) + offset, pctl);
regmap_write(mtk_get_regmap(pctl, pin), reg_addr, bit);
return 0;
}
int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap,
const struct mtk_pin_ies_smt_set *ies_smt_infos, unsigned int info_num,
unsigned int pin, unsigned char align, int value)
{
unsigned int i, reg_addr, bit;
for (i = 0; i < info_num; i++) {
if (pin >= ies_smt_infos[i].start &&
pin <= ies_smt_infos[i].end) {
break;
}
}
if (i == info_num)
return -EINVAL;
if (value)
reg_addr = ies_smt_infos[i].offset + align;
else
reg_addr = ies_smt_infos[i].offset + (align << 1);
bit = BIT(ies_smt_infos[i].bit);
regmap_write(regmap, reg_addr, bit);
return 0;
}
static const struct mtk_pin_drv_grp *mtk_find_pin_drv_grp_by_pin(
@ -295,36 +332,37 @@ static int mtk_pconf_parse_conf(struct pinctrl_dev *pctldev,
unsigned int pin, enum pin_config_param param,
enum pin_config_param arg)
{
int ret = 0;
struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
switch (param) {
case PIN_CONFIG_BIAS_DISABLE:
mtk_pconf_set_pull_select(pctl, pin, false, false, arg);
ret = mtk_pconf_set_pull_select(pctl, pin, false, false, arg);
break;
case PIN_CONFIG_BIAS_PULL_UP:
mtk_pconf_set_pull_select(pctl, pin, true, true, arg);
ret = mtk_pconf_set_pull_select(pctl, pin, true, true, arg);
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
mtk_pconf_set_pull_select(pctl, pin, true, false, arg);
ret = mtk_pconf_set_pull_select(pctl, pin, true, false, arg);
break;
case PIN_CONFIG_INPUT_ENABLE:
mtk_pconf_set_ies_smt(pctl, pin, arg, param);
ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
break;
case PIN_CONFIG_OUTPUT:
mtk_gpio_set(pctl->chip, pin, arg);
mtk_pmx_gpio_set_direction(pctldev, NULL, pin, false);
ret = mtk_pmx_gpio_set_direction(pctldev, NULL, pin, false);
break;
case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
mtk_pconf_set_ies_smt(pctl, pin, arg, param);
ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
break;
case PIN_CONFIG_DRIVE_STRENGTH:
mtk_pconf_set_driving(pctl, pin, arg);
ret = mtk_pconf_set_driving(pctl, pin, arg);
break;
default:
return -EINVAL;
ret = -EINVAL;
}
return 0;
return ret;
}
static int mtk_pconf_group_get(struct pinctrl_dev *pctldev,
@ -343,12 +381,14 @@ static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group,
{
struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct mtk_pinctrl_group *g = &pctl->groups[group];
int i;
int i, ret;
for (i = 0; i < num_configs; i++) {
mtk_pconf_parse_conf(pctldev, g->pin,
ret = mtk_pconf_parse_conf(pctldev, g->pin,
pinconf_to_config_param(configs[i]),
pinconf_to_config_argument(configs[i]));
if (ret < 0)
return ret;
g->config = configs[i];
}

31
drivers/pinctrl/mediatek/pinctrl-mtk-common.h
View File

@ -17,6 +17,7 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/regmap.h>
#include <linux/pinctrl/pinconf-generic.h>
#define NO_EINT_SUPPORT 255
#define MT_EDGE_SENSITIVE 0
@ -25,6 +26,8 @@
#define EINT_DBNC_RST_BIT (0x1 << 1)
#define EINT_DBNC_SET_EN (0x1 << 0)
#define MTK_PINCTRL_NOT_SUPPORT (0xffff)
struct mtk_desc_function {
const char *name;
unsigned char muxval;
@ -143,6 +146,28 @@ struct mtk_pin_spec_pupd_set_samereg {
.r0_bit = _r0, \
}
/**
* struct mtk_pin_ies_set - For special pins' ies and smt setting.
* @start: The start pin number of those special pins.
* @end: The end pin number of those special pins.
* @offset: The offset of special setting register.
* @bit: The bit of special setting register.
*/
struct mtk_pin_ies_smt_set {
unsigned short start;
unsigned short end;
unsigned short offset;
unsigned char bit;
};
#define MTK_PIN_IES_SMT_SPEC(_start, _end, _offset, _bit) \
{ \
.start = _start, \
.end = _end, \
.bit = _bit, \
.offset = _offset, \
}
struct mtk_eint_offsets {
const char *name;
unsigned int stat;
@ -208,7 +233,7 @@ struct mtk_pinctrl_devdata {
int (*spec_pull_set)(struct regmap *reg, unsigned int pin,
unsigned char align, bool isup, unsigned int arg);
int (*spec_ies_smt_set)(struct regmap *reg, unsigned int pin,
unsigned char align, int value);
unsigned char align, int value, enum pin_config_param arg);
unsigned int dir_offset;
unsigned int ies_offset;
unsigned int smt_offset;
@ -251,4 +276,8 @@ int mtk_pctrl_spec_pull_set_samereg(struct regmap *regmap,
unsigned int info_num, unsigned int pin,
unsigned char align, bool isup, unsigned int r1r0);
int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap,
const struct mtk_pin_ies_smt_set *ies_smt_infos, unsigned int info_num,
unsigned int pin, unsigned char align, int value);
#endif /* __PINCTRL_MTK_COMMON_H */