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path: root/drivers/pinctrl/sprd/pinctrl-sprd.c
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Diffstat (limited to 'drivers/pinctrl/sprd/pinctrl-sprd.c')
-rw-r--r--drivers/pinctrl/sprd/pinctrl-sprd.c110
1 files changed, 61 insertions, 49 deletions
diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c
index 7d9a44bd0047..16cf9d15f247 100644
--- a/drivers/pinctrl/sprd/pinctrl-sprd.c
+++ b/drivers/pinctrl/sprd/pinctrl-sprd.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Spreadtrum pin controller driver
* Copyright (C) 2017 Spreadtrum - http://www.spreadtrum.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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/debugfs.h>
@@ -19,14 +11,16 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+
+#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/machine.h>
-#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
-#include <linux/slab.h>
#include "../core.h"
#include "../pinmux.h"
@@ -49,7 +43,8 @@
#define PUBCP_SLEEP_MODE BIT(14)
#define TGLDSP_SLEEP_MODE BIT(15)
#define AGDSP_SLEEP_MODE BIT(16)
-#define SLEEP_MODE_MASK GENMASK(3, 0)
+#define CM4_SLEEP_MODE BIT(17)
+#define SLEEP_MODE_MASK GENMASK(5, 0)
#define SLEEP_MODE_SHIFT 13
#define SLEEP_INPUT BIT(1)
@@ -75,8 +70,8 @@
#define SLEEP_PULL_UP_MASK 0x1
#define SLEEP_PULL_UP_SHIFT 3
-#define PULL_UP_20K (BIT(12) | BIT(7))
-#define PULL_UP_4_7K BIT(12)
+#define PULL_UP_4_7K (BIT(12) | BIT(7))
+#define PULL_UP_20K BIT(7)
#define PULL_UP_MASK 0x21
#define PULL_UP_SHIFT 7
@@ -89,6 +84,7 @@ enum pin_sleep_mode {
PUBCP_SLEEP = BIT(1),
TGLDSP_SLEEP = BIT(2),
AGDSP_SLEEP = BIT(3),
+ CM4_SLEEP = BIT(4),
};
enum pin_func_sel {
@@ -262,8 +258,7 @@ static int sprd_dt_node_to_map(struct pinctrl_dev *pctldev,
grp = sprd_pinctrl_find_group_by_name(pctl, np->name);
if (!grp) {
- dev_err(pctl->dev, "unable to find group for node %s\n",
- of_node_full_name(np));
+ dev_err(pctl->dev, "unable to find group for node %pOF\n", np);
return -EINVAL;
}
@@ -280,16 +275,14 @@ static int sprd_dt_node_to_map(struct pinctrl_dev *pctldev,
if (ret < 0) {
if (ret != -EINVAL)
dev_err(pctl->dev,
- "%s: could not parse property function\n",
- of_node_full_name(np));
+ "%pOF: could not parse property function\n", np);
function = NULL;
}
ret = pinconf_generic_parse_dt_config(np, pctldev, &configs,
&num_configs);
if (ret < 0) {
- dev_err(pctl->dev, "%s: could not parse node property\n",
- of_node_full_name(np));
+ dev_err(pctl->dev, "%pOF: could not parse node property\n", np);
return ret;
}
@@ -462,7 +455,7 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
if (pin->type == GLOBAL_CTRL_PIN &&
param == SPRD_PIN_CONFIG_CONTROL) {
arg = reg;
- } else if (pin->type == COMMON_PIN) {
+ } else if (pin->type == COMMON_PIN || pin->type == MISC_PIN) {
switch (param) {
case SPRD_PIN_CONFIG_SLEEP_MODE:
arg = (reg >> SLEEP_MODE_SHIFT) & SLEEP_MODE_MASK;
@@ -470,17 +463,15 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
case PIN_CONFIG_INPUT_ENABLE:
arg = (reg >> SLEEP_INPUT_SHIFT) & SLEEP_INPUT_MASK;
break;
- case PIN_CONFIG_OUTPUT:
+ case PIN_CONFIG_OUTPUT_ENABLE:
arg = reg & SLEEP_OUTPUT_MASK;
break;
- case PIN_CONFIG_SLEEP_HARDWARE_STATE:
- arg = 0;
+ case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+ if ((reg & SLEEP_OUTPUT) || (reg & SLEEP_INPUT))
+ return -EINVAL;
+
+ arg = 1;
break;
- default:
- return -ENOTSUPP;
- }
- } else if (pin->type == MISC_PIN) {
- switch (param) {
case PIN_CONFIG_DRIVE_STRENGTH:
arg = (reg >> DRIVE_STRENGTH_SHIFT) &
DRIVE_STRENGTH_MASK;
@@ -500,6 +491,13 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
SLEEP_PULL_UP_MASK) << 16;
arg |= (reg >> PULL_UP_SHIFT) & PULL_UP_MASK;
break;
+ case PIN_CONFIG_BIAS_DISABLE:
+ if ((reg & (SLEEP_PULL_DOWN | SLEEP_PULL_UP)) ||
+ (reg & (PULL_DOWN | PULL_UP_4_7K | PULL_UP_20K)))
+ return -EINVAL;
+
+ arg = 1;
+ break;
case PIN_CONFIG_SLEEP_HARDWARE_STATE:
arg = 0;
break;
@@ -614,7 +612,7 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
if (pin->type == GLOBAL_CTRL_PIN &&
param == SPRD_PIN_CONFIG_CONTROL) {
val = arg;
- } else if (pin->type == COMMON_PIN) {
+ } else if (pin->type == COMMON_PIN || pin->type == MISC_PIN) {
switch (param) {
case SPRD_PIN_CONFIG_SLEEP_MODE:
if (arg & AP_SLEEP)
@@ -625,6 +623,8 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
val |= TGLDSP_SLEEP_MODE;
if (arg & AGDSP_SLEEP)
val |= AGDSP_SLEEP_MODE;
+ if (arg & CM4_SLEEP)
+ val |= CM4_SLEEP_MODE;
mask = SLEEP_MODE_MASK;
shift = SLEEP_MODE_SHIFT;
@@ -640,20 +640,23 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
shift = SLEEP_INPUT_SHIFT;
}
break;
- case PIN_CONFIG_OUTPUT:
+ case PIN_CONFIG_OUTPUT_ENABLE:
if (is_sleep_config == true) {
- val |= SLEEP_OUTPUT;
+ if (arg > 0)
+ val |= SLEEP_OUTPUT;
+ else
+ val &= ~SLEEP_OUTPUT;
+
mask = SLEEP_OUTPUT_MASK;
shift = SLEEP_OUTPUT_SHIFT;
}
break;
- case PIN_CONFIG_SLEEP_HARDWARE_STATE:
- continue;
- default:
- return -ENOTSUPP;
- }
- } else if (pin->type == MISC_PIN) {
- switch (param) {
+ case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+ if (is_sleep_config == true) {
+ val = shift = 0;
+ mask = SLEEP_OUTPUT | SLEEP_INPUT;
+ }
+ break;
case PIN_CONFIG_DRIVE_STRENGTH:
if (arg < 2 || arg > 60)
return -EINVAL;
@@ -683,7 +686,7 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
shift = INPUT_SCHMITT_SHIFT;
break;
case PIN_CONFIG_BIAS_PULL_UP:
- if (is_sleep_config == true) {
+ if (is_sleep_config) {
val |= SLEEP_PULL_UP;
mask = SLEEP_PULL_UP_MASK;
shift = SLEEP_PULL_UP_SHIFT;
@@ -697,6 +700,16 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
shift = PULL_UP_SHIFT;
}
break;
+ case PIN_CONFIG_BIAS_DISABLE:
+ if (is_sleep_config == true) {
+ val = shift = 0;
+ mask = SLEEP_PULL_DOWN | SLEEP_PULL_UP;
+ } else {
+ val = shift = 0;
+ mask = PULL_DOWN | PULL_UP_20K |
+ PULL_UP_4_7K;
+ }
+ break;
case PIN_CONFIG_SLEEP_HARDWARE_STATE:
continue;
default:
@@ -918,7 +931,6 @@ static int sprd_pinctrl_parse_dt(struct sprd_pinctrl *sprd_pctl)
{
struct sprd_pinctrl_soc_info *info = sprd_pctl->info;
struct device_node *np = sprd_pctl->dev->of_node;
- struct device_node *child, *sub_child;
struct sprd_pin_group *grp;
const char **temp;
int ret;
@@ -946,7 +958,7 @@ static int sprd_pinctrl_parse_dt(struct sprd_pinctrl *sprd_pctl)
temp = info->grp_names;
grp = info->groups;
- for_each_child_of_node(np, child) {
+ for_each_child_of_node_scoped(np, child) {
ret = sprd_pinctrl_parse_groups(child, sprd_pctl, grp);
if (ret)
return ret;
@@ -955,7 +967,7 @@ static int sprd_pinctrl_parse_dt(struct sprd_pinctrl *sprd_pctl)
grp++;
if (of_get_child_count(child) > 0) {
- for_each_child_of_node(child, sub_child) {
+ for_each_child_of_node_scoped(child, sub_child) {
ret = sprd_pinctrl_parse_groups(sub_child,
sprd_pctl, grp);
if (ret)
@@ -1028,7 +1040,6 @@ int sprd_pinctrl_core_probe(struct platform_device *pdev,
struct sprd_pinctrl *sprd_pctl;
struct sprd_pinctrl_soc_info *pinctrl_info;
struct pinctrl_pin_desc *pin_desc;
- struct resource *res;
int ret, i;
sprd_pctl = devm_kzalloc(&pdev->dev, sizeof(struct sprd_pinctrl),
@@ -1036,8 +1047,7 @@ int sprd_pinctrl_core_probe(struct platform_device *pdev,
if (!sprd_pctl)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- sprd_pctl->base = devm_ioremap_resource(&pdev->dev, res);
+ sprd_pctl->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(sprd_pctl->base))
return PTR_ERR(sprd_pctl->base);
@@ -1089,14 +1099,15 @@ int sprd_pinctrl_core_probe(struct platform_device *pdev,
return 0;
}
+EXPORT_SYMBOL_GPL(sprd_pinctrl_core_probe);
-int sprd_pinctrl_remove(struct platform_device *pdev)
+void sprd_pinctrl_remove(struct platform_device *pdev)
{
struct sprd_pinctrl *sprd_pctl = platform_get_drvdata(pdev);
pinctrl_unregister(sprd_pctl->pctl);
- return 0;
}
+EXPORT_SYMBOL_GPL(sprd_pinctrl_remove);
void sprd_pinctrl_shutdown(struct platform_device *pdev)
{
@@ -1111,6 +1122,7 @@ void sprd_pinctrl_shutdown(struct platform_device *pdev)
return;
pinctrl_select_state(pinctl, state);
}
+EXPORT_SYMBOL_GPL(sprd_pinctrl_shutdown);
MODULE_DESCRIPTION("SPREADTRUM Pin Controller Driver");
MODULE_AUTHOR("Baolin Wang <baolin.wang@spreadtrum.com>");
generated by cgit (git 2.34.1) at 2025-12-26 04:44:42 +0000