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-rw-r--r--drivers/pinctrl/Kconfig10
-rw-r--r--drivers/pinctrl/Makefile1
-rw-r--r--drivers/pinctrl/core.c41
-rw-r--r--drivers/pinctrl/pinctrl-coh901.c6
-rw-r--r--drivers/pinctrl/pinctrl-imx.c13
-rw-r--r--drivers/pinctrl/pinctrl-nomadik-db8500.c33
-rw-r--r--drivers/pinctrl/pinctrl-nomadik.c37
-rw-r--r--drivers/pinctrl/pinctrl-single.c987
-rw-r--r--drivers/pinctrl/pinctrl-tegra.c5
-rw-r--r--drivers/pinctrl/pinctrl-u300.c6
-rw-r--r--drivers/pinctrl/spear/pinctrl-spear.c4
11 files changed, 1064 insertions, 79 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index c6e6ae0aa3b1..54e3588bef62 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -102,6 +102,14 @@ config PINCTRL_PXA910
select PINCTRL_PXA3xx
select PINCONF
+config PINCTRL_SINGLE
+ tristate "One-register-per-pin type device tree based pinctrl driver"
+ depends on OF
+ select PINMUX
+ select PINCONF
+ help
+ This selects the device tree based generic pinctrl driver.
+
config PINCTRL_SIRF
bool "CSR SiRFprimaII pin controller driver"
depends on ARCH_PRIMA2
@@ -130,7 +138,7 @@ config PINCTRL_U300
config PINCTRL_COH901
bool "ST-Ericsson U300 COH 901 335/571 GPIO"
- depends on GPIOLIB && ARCH_U300 && PINMUX_U300
+ depends on GPIOLIB && ARCH_U300 && PINCTRL_U300
help
Say yes here to support GPIO interface on ST-Ericsson U300.
The names of the two IP block variants supported are
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 8c074376cdea..f40b1f81ff2c 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_PINCTRL_NOMADIK) += pinctrl-nomadik.o
obj-$(CONFIG_PINCTRL_DB8500) += pinctrl-nomadik-db8500.o
obj-$(CONFIG_PINCTRL_PXA168) += pinctrl-pxa168.o
obj-$(CONFIG_PINCTRL_PXA910) += pinctrl-pxa910.o
+obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
obj-$(CONFIG_PINCTRL_SIRF) += pinctrl-sirf.o
obj-$(CONFIG_PINCTRL_TEGRA) += pinctrl-tegra.o
obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 0cc053af70bd..fb7f3bebdc69 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -332,19 +332,16 @@ void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev,
}
EXPORT_SYMBOL_GPL(pinctrl_add_gpio_range);
-/**
- * pinctrl_remove_gpio_range() - remove a range of GPIOs fro a pin controller
- * @pctldev: pin controller device to remove the range from
- * @range: the GPIO range to remove
- */
-void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
- struct pinctrl_gpio_range *range)
+void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *ranges,
+ unsigned nranges)
{
- mutex_lock(&pinctrl_mutex);
- list_del(&range->node);
- mutex_unlock(&pinctrl_mutex);
+ int i;
+
+ for (i = 0; i < nranges; i++)
+ pinctrl_add_gpio_range(pctldev, &ranges[i]);
}
-EXPORT_SYMBOL_GPL(pinctrl_remove_gpio_range);
+EXPORT_SYMBOL_GPL(pinctrl_add_gpio_ranges);
/**
* pinctrl_get_group_selector() - returns the group selector for a group
@@ -1395,9 +1392,9 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc,
struct pinctrl_dev *pctldev;
int ret;
- if (pctldesc == NULL)
+ if (!pctldesc)
return NULL;
- if (pctldesc->name == NULL)
+ if (!pctldesc->name)
return NULL;
pctldev = kzalloc(sizeof(*pctldev), GFP_KERNEL);
@@ -1415,23 +1412,20 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc,
pctldev->dev = dev;
/* check core ops for sanity */
- ret = pinctrl_check_ops(pctldev);
- if (ret) {
+ if (pinctrl_check_ops(pctldev)) {
dev_err(dev, "pinctrl ops lacks necessary functions\n");
goto out_err;
}
/* If we're implementing pinmuxing, check the ops for sanity */
if (pctldesc->pmxops) {
- ret = pinmux_check_ops(pctldev);
- if (ret)
+ if (pinmux_check_ops(pctldev))
goto out_err;
}
/* If we're implementing pinconfig, check the ops for sanity */
if (pctldesc->confops) {
- ret = pinconf_check_ops(pctldev);
- if (ret)
+ if (pinconf_check_ops(pctldev))
goto out_err;
}
@@ -1457,11 +1451,9 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc,
if (IS_ERR(s)) {
dev_dbg(dev, "failed to lookup the default state\n");
} else {
- ret = pinctrl_select_state_locked(pctldev->p, s);
- if (ret) {
+ if (pinctrl_select_state_locked(pctldev->p, s))
dev_err(dev,
"failed to select default state\n");
- }
}
}
@@ -1485,6 +1477,7 @@ EXPORT_SYMBOL_GPL(pinctrl_register);
*/
void pinctrl_unregister(struct pinctrl_dev *pctldev)
{
+ struct pinctrl_gpio_range *range, *n;
if (pctldev == NULL)
return;
@@ -1500,6 +1493,10 @@ void pinctrl_unregister(struct pinctrl_dev *pctldev)
/* Destroy descriptor tree */
pinctrl_free_pindescs(pctldev, pctldev->desc->pins,
pctldev->desc->npins);
+ /* remove gpio ranges map */
+ list_for_each_entry_safe(range, n, &pctldev->gpio_ranges, node)
+ list_del(&range->node);
+
kfree(pctldev);
mutex_unlock(&pinctrl_mutex);
diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index 55697a5d7482..cc0f00d73d15 100644
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -770,7 +770,7 @@ static int __init u300_gpio_probe(struct platform_device *pdev)
dev_err(gpio->dev, "could not get GPIO clock\n");
goto err_no_clk;
}
- err = clk_enable(gpio->clk);
+ err = clk_prepare_enable(gpio->clk);
if (err) {
dev_err(gpio->dev, "could not enable GPIO clock\n");
goto err_no_clk_enable;
@@ -912,7 +912,7 @@ err_no_ioremap:
release_mem_region(gpio->memres->start, resource_size(gpio->memres));
err_no_ioregion:
err_no_resource:
- clk_disable(gpio->clk);
+ clk_disable_unprepare(gpio->clk);
err_no_clk_enable:
clk_put(gpio->clk);
err_no_clk:
@@ -943,7 +943,7 @@ static int __exit u300_gpio_remove(struct platform_device *pdev)
iounmap(gpio->base);
release_mem_region(gpio->memres->start,
resource_size(gpio->memres));
- clk_disable(gpio->clk);
+ clk_disable_unprepare(gpio->clk);
clk_put(gpio->clk);
platform_set_drvdata(pdev, NULL);
kfree(gpio);
diff --git a/drivers/pinctrl/pinctrl-imx.c b/drivers/pinctrl/pinctrl-imx.c
index 90c837f469a6..44e97265cd7d 100644
--- a/drivers/pinctrl/pinctrl-imx.c
+++ b/drivers/pinctrl/pinctrl-imx.c
@@ -146,7 +146,7 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev,
struct pinctrl_map *new_map;
struct device_node *parent;
int map_num = 1;
- int i;
+ int i, j;
/*
* first find the group of this node and check if we need create
@@ -184,13 +184,14 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev,
/* create config map */
new_map++;
- for (i = 0; i < grp->npins; i++) {
+ for (i = j = 0; i < grp->npins; i++) {
if (!(grp->configs[i] & IMX_NO_PAD_CTL)) {
- new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
- new_map[i].data.configs.group_or_pin =
+ new_map[j].type = PIN_MAP_TYPE_CONFIGS_PIN;
+ new_map[j].data.configs.group_or_pin =
pin_get_name(pctldev, grp->pins[i]);
- new_map[i].data.configs.configs = &grp->configs[i];
- new_map[i].data.configs.num_configs = 1;
+ new_map[j].data.configs.configs = &grp->configs[i];
+ new_map[j].data.configs.num_configs = 1;
+ j++;
}
}
diff --git a/drivers/pinctrl/pinctrl-nomadik-db8500.c b/drivers/pinctrl/pinctrl-nomadik-db8500.c
index 8b2022276f71..6f99769c6733 100644
--- a/drivers/pinctrl/pinctrl-nomadik-db8500.c
+++ b/drivers/pinctrl/pinctrl-nomadik-db8500.c
@@ -467,9 +467,12 @@ static const unsigned mc1_a_1_pins[] = { DB8500_PIN_AH16, DB8500_PIN_AG15,
DB8500_PIN_AH15 };
static const unsigned mc1dir_a_1_pins[] = { DB8500_PIN_AH13, DB8500_PIN_AG12,
DB8500_PIN_AH12, DB8500_PIN_AH11 };
-static const unsigned hsir_a_1_pins[] = { DB8500_PIN_AG10, DB8500_PIN_AH10 };
-static const unsigned hsit_a_1_pins[] = { DB8500_PIN_AJ11, DB8500_PIN_AJ9,
- DB8500_PIN_AH9, DB8500_PIN_AG9, DB8500_PIN_AG8, DB8500_PIN_AF8 };
+static const unsigned hsir_a_1_pins[] = { DB8500_PIN_AG10, DB8500_PIN_AH10,
+ DB8500_PIN_AJ11 };
+static const unsigned hsit_a_1_pins[] = { DB8500_PIN_AJ9, DB8500_PIN_AH9,
+ DB8500_PIN_AG9, DB8500_PIN_AG8, DB8500_PIN_AF8 };
+static const unsigned hsit_a_2_pins[] = { DB8500_PIN_AJ9, DB8500_PIN_AH9,
+ DB8500_PIN_AG9, DB8500_PIN_AG8 };
static const unsigned clkout_a_1_pins[] = { DB8500_PIN_AH7, DB8500_PIN_AJ6 };
static const unsigned clkout_a_2_pins[] = { DB8500_PIN_AG7, DB8500_PIN_AF7 };
static const unsigned usb_a_1_pins[] = { DB8500_PIN_AF28, DB8500_PIN_AE29,
@@ -508,9 +511,11 @@ static const unsigned sm_b_1_pins[] = { DB8500_PIN_C6, DB8500_PIN_B3,
DB8500_PIN_D9, DB8500_PIN_A5, DB8500_PIN_B4, DB8500_PIN_C8,
DB8500_PIN_A12, DB8500_PIN_C10, DB8500_PIN_B10, DB8500_PIN_B9,
DB8500_PIN_A9, DB8500_PIN_C7, DB8500_PIN_A7, DB8500_PIN_C5,
- DB8500_PIN_C9, DB8500_PIN_B14 };
-/* This chip select pin can be "ps0" in alt B so have it separately */
+ DB8500_PIN_C9 };
+/* This chip select pin can be "ps0" in alt C so have it separately */
static const unsigned smcs0_b_1_pins[] = { DB8500_PIN_E8 };
+/* This chip select pin can be "ps1" in alt C so have it separately */
+static const unsigned smcs1_b_1_pins[] = { DB8500_PIN_B14 };
static const unsigned ipgpio7_b_1_pins[] = { DB8500_PIN_B11 };
static const unsigned ipgpio2_b_1_pins[] = { DB8500_PIN_C12 };
static const unsigned ipgpio3_b_1_pins[] = { DB8500_PIN_C11 };
@@ -572,6 +577,7 @@ static const unsigned mc2rstn_c_1_pins[] = { DB8500_PIN_C8 };
static const unsigned kp_c_1_pins[] = { DB8500_PIN_C9, DB8500_PIN_B11,
DB8500_PIN_C12, DB8500_PIN_C11, DB8500_PIN_D17, DB8500_PIN_D16,
DB8500_PIN_C23, DB8500_PIN_D23 };
+static const unsigned smps0_c_1_pins[] = { DB8500_PIN_E8 };
static const unsigned smps1_c_1_pins[] = { DB8500_PIN_B14 };
static const unsigned u2rxtx_c_3_pins[] = { DB8500_PIN_B17, DB8500_PIN_C16 };
static const unsigned stmape_c_2_pins[] = { DB8500_PIN_C19, DB8500_PIN_C17,
@@ -595,6 +601,8 @@ static const unsigned kp_oc1_1_pins[] = { DB8500_PIN_C6, DB8500_PIN_B3,
DB8500_PIN_D6, DB8500_PIN_B7 };
static const unsigned spi2_oc1_1_pins[] = { DB8500_PIN_AH13, DB8500_PIN_AG12,
DB8500_PIN_AH12, DB8500_PIN_AH11 };
+static const unsigned spi2_oc1_2_pins[] = { DB8500_PIN_AH13, DB8500_PIN_AH12,
+ DB8500_PIN_AH11 };
#define DB8500_PIN_GROUP(a,b) { .name = #a, .pins = a##_pins, \
.npins = ARRAY_SIZE(a##_pins), .altsetting = b }
@@ -610,6 +618,8 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
DB8500_PIN_GROUP(msp0tfstck_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(msp0rfsrck_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(mc0_a_1, NMK_GPIO_ALT_A),
+ DB8500_PIN_GROUP(mc0_dat47_a_1, NMK_GPIO_ALT_A),
+ DB8500_PIN_GROUP(mc0dat31dir_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(msp1txrx_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(msp1_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(lcdb_a_1, NMK_GPIO_ALT_A),
@@ -631,6 +641,7 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
DB8500_PIN_GROUP(mc1_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(hsir_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(hsit_a_1, NMK_GPIO_ALT_A),
+ DB8500_PIN_GROUP(hsit_a_2, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(clkout_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(clkout_a_2, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(usb_a_1, NMK_GPIO_ALT_A),
@@ -653,6 +664,7 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
DB8500_PIN_GROUP(kp_b_1, NMK_GPIO_ALT_B),
DB8500_PIN_GROUP(sm_b_1, NMK_GPIO_ALT_B),
DB8500_PIN_GROUP(smcs0_b_1, NMK_GPIO_ALT_B),
+ DB8500_PIN_GROUP(smcs1_b_1, NMK_GPIO_ALT_B),
DB8500_PIN_GROUP(ipgpio7_b_1, NMK_GPIO_ALT_B),
DB8500_PIN_GROUP(ipgpio2_b_1, NMK_GPIO_ALT_B),
DB8500_PIN_GROUP(ipgpio3_b_1, NMK_GPIO_ALT_B),
@@ -693,6 +705,7 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
DB8500_PIN_GROUP(mc5_c_1, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(mc2rstn_c_1, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(kp_c_1, NMK_GPIO_ALT_C),
+ DB8500_PIN_GROUP(smps0_c_1, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(smps1_c_1, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(u2rxtx_c_3, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(stmape_c_2, NMK_GPIO_ALT_C),
@@ -709,6 +722,7 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
/* Other alt C1 column, these are still configured as alt C */
DB8500_PIN_GROUP(kp_oc1_1, NMK_GPIO_ALT_C),
DB8500_PIN_GROUP(spi2_oc1_1, NMK_GPIO_ALT_C),
+ DB8500_PIN_GROUP(spi2_oc1_2, NMK_GPIO_ALT_C),
};
/* We use this macro to define the groups applicable to a function */
@@ -731,7 +745,7 @@ DB8500_FUNC_GROUPS(ipi2c, "ipi2c_a_1", "ipi2c_a_2");
*/
DB8500_FUNC_GROUPS(msp0, "msp0txrx_a_1", "msp0tfstck_a_1", "msp0rfstck_a_1",
"msp0txrx_b_1", "msp0sck_b_1");
-DB8500_FUNC_GROUPS(mc0, "mc0_a_1");
+DB8500_FUNC_GROUPS(mc0, "mc0_a_1", "mc0_dat47_a_1", "mc0dat31dir_a_1");
/* MSP0 can swap RX/TX like MSP0 but has no SCK pin available */
DB8500_FUNC_GROUPS(msp1, "msp1txrx_a_1", "msp1_a_1", "msp1txrx_b_1");
DB8500_FUNC_GROUPS(lcdb, "lcdb_a_1");
@@ -752,7 +766,7 @@ DB8500_FUNC_GROUPS(ipgpio, "ipgpio0_a_1", "ipgpio1_a_1", "ipgpio7_b_1",
DB8500_FUNC_GROUPS(msp2, "msp2sck_a_1", "msp2_a_1");
DB8500_FUNC_GROUPS(mc4, "mc4_a_1", "mc4rstn_c_1");
DB8500_FUNC_GROUPS(mc1, "mc1_a_1", "mc1dir_a_1");
-DB8500_FUNC_GROUPS(hsi, "hsir1_a_1", "hsit1_a_1");
+DB8500_FUNC_GROUPS(hsi, "hsir1_a_1", "hsit1_a_1", "hsit_a_2");
DB8500_FUNC_GROUPS(clkout, "clkout_a_1", "clkout_a_2", "clkout_c_1");
DB8500_FUNC_GROUPS(usb, "usb_a_1");
DB8500_FUNC_GROUPS(trig, "trig_b_1");
@@ -768,7 +782,8 @@ DB8500_FUNC_GROUPS(uartmod, "uartmodtx_b_1", "uartmodrx_b_1", "uartmodrx_b_2",
DB8500_FUNC_GROUPS(stmmod, "stmmod_b_1", "stmmod_c_1");
DB8500_FUNC_GROUPS(spi3, "spi3_b_1");
/* Select between CS0 on alt B or PS1 on alt C */
-DB8500_FUNC_GROUPS(sm, "sm_b_1", "smcs0_b_1", "smcleale_c_1", "smps1_c_1");
+DB8500_FUNC_GROUPS(sm, "sm_b_1", "smcs0_b_1", "smcs1_b_1", "smcleale_c_1",
+ "smps0_c_1", "smps1_c_1");
DB8500_FUNC_GROUPS(lcda, "lcdaclk_b_1", "lcda_b_1");
DB8500_FUNC_GROUPS(ddrtrig, "ddrtrig_b_1");
DB8500_FUNC_GROUPS(pwl, "pwl_b_1", "pwl_b_2", "pwl_b_3", "pwl_b_4");
@@ -783,7 +798,7 @@ DB8500_FUNC_GROUPS(mc5, "mc5_c_1");
DB8500_FUNC_GROUPS(usbsim, "usbsim_c_1", "usbsim_c_2");
DB8500_FUNC_GROUPS(i2c3, "i2c3_c_1", "i2c3_c_2");
DB8500_FUNC_GROUPS(spi0, "spi0_c_1");
-DB8500_FUNC_GROUPS(spi2, "spi2_oc1_1");
+DB8500_FUNC_GROUPS(spi2, "spi2_oc1_1", "spi2_oc1_2");
#define FUNCTION(fname) \
{ \
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index dd9e6f26416d..53b0d49a7a1c 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -434,7 +434,7 @@ static int __nmk_config_pins(pin_cfg_t *cfgs, int num, bool sleep)
/**
* nmk_config_pin - configure a pin's mux attributes
* @cfg: pin confguration
- *
+ * @sleep: Non-zero to apply the sleep mode configuration
* Configures a pin's mode (alternate function or GPIO), its pull up status,
* and its sleep mode based on the specified configuration. The @cfg is
* usually one of the SoC specific macros defined in mach/<soc>-pins.h. These
@@ -1194,7 +1194,7 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
}
if (np) {
- pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
@@ -1229,29 +1229,23 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
goto out;
}
- if (request_mem_region(res->start, resource_size(res),
- dev_name(&dev->dev)) == NULL) {
- ret = -EBUSY;
- goto out;
- }
-
- base = ioremap(res->start, resource_size(res));
+ base = devm_request_and_ioremap(&dev->dev, res);
if (!base) {
ret = -ENOMEM;
- goto out_release;
+ goto out;
}
- clk = clk_get(&dev->dev, NULL);
+ clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
- goto out_unmap;
+ goto out;
}
clk_prepare(clk);
- nmk_chip = kzalloc(sizeof(*nmk_chip), GFP_KERNEL);
+ nmk_chip = devm_kzalloc(&dev->dev, sizeof(*nmk_chip), GFP_KERNEL);
if (!nmk_chip) {
ret = -ENOMEM;
- goto out_clk;
+ goto out;
}
/*
@@ -1286,7 +1280,7 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
ret = gpiochip_add(&nmk_chip->chip);
if (ret)
- goto out_free;
+ goto out;
BUG_ON(nmk_chip->bank >= ARRAY_SIZE(nmk_gpio_chips));
@@ -1300,7 +1294,7 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
if (!nmk_chip->domain) {
pr_err("%s: Failed to create irqdomain\n", np->full_name);
ret = -ENOSYS;
- goto out_free;
+ goto out;
}
nmk_gpio_init_irq(nmk_chip);
@@ -1309,20 +1303,9 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
return 0;
-out_free:
- kfree(nmk_chip);
-out_clk:
- clk_disable(clk);
- clk_put(clk);
-out_unmap:
- iounmap(base);
-out_release:
- release_mem_region(res->start, resource_size(res));
out:
dev_err(&dev->dev, "Failure %i for GPIO %i-%i\n", ret,
pdata->first_gpio, pdata->first_gpio+31);
- if (np)
- kfree(pdata);
return ret;
}
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
new file mode 100644
index 000000000000..76a4260f20f3
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -0,0 +1,987 @@
+/*
+ * Generic device tree based pinctrl driver for one register per pin
+ * type pinmux controllers
+ *
+ * Copyright (C) 2012 Texas Instruments, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/list.h>
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include "core.h"
+
+#define DRIVER_NAME "pinctrl-single"
+#define PCS_MUX_NAME "pinctrl-single,pins"
+#define PCS_REG_NAME_LEN ((sizeof(unsigned long) * 2) + 1)
+#define PCS_OFF_DISABLED ~0U
+
+/**
+ * struct pcs_pingroup - pingroups for a function
+ * @np: pingroup device node pointer
+ * @name: pingroup name
+ * @gpins: array of the pins in the group
+ * @ngpins: number of pins in the group
+ * @node: list node
+ */
+struct pcs_pingroup {
+ struct device_node *np;
+ const char *name;
+ int *gpins;
+ int ngpins;
+ struct list_head node;
+};
+
+/**
+ * struct pcs_func_vals - mux function register offset and value pair
+ * @reg: register virtual address
+ * @val: register value
+ */
+struct pcs_func_vals {
+ void __iomem *reg;
+ unsigned val;
+};
+
+/**
+ * struct pcs_function - pinctrl function
+ * @name: pinctrl function name
+ * @vals: register and vals array
+ * @nvals: number of entries in vals array
+ * @pgnames: array of pingroup names the function uses
+ * @npgnames: number of pingroup names the function uses
+ * @node: list node
+ */
+struct pcs_function {
+ const char *name;
+ struct pcs_func_vals *vals;
+ unsigned nvals;
+ const char **pgnames;
+ int npgnames;
+ struct list_head node;
+};
+
+/**
+ * struct pcs_data - wrapper for data needed by pinctrl framework
+ * @pa: pindesc array
+ * @cur: index to current element
+ *
+ * REVISIT: We should be able to drop this eventually by adding
+ * support for registering pins individually in the pinctrl
+ * framework for those drivers that don't need a static array.
+ */
+struct pcs_data {
+ struct pinctrl_pin_desc *pa;
+ int cur;
+};
+
+/**
+ * struct pcs_name - register name for a pin
+ * @name: name of the pinctrl register
+ *
+ * REVISIT: We may want to make names optional in the pinctrl
+ * framework as some drivers may not care about pin names to
+ * avoid kernel bloat. The pin names can be deciphered by user
+ * space tools using debugfs based on the register address and
+ * SoC packaging information.
+ */
+struct pcs_name {
+ char name[PCS_REG_NAME_LEN];
+};
+
+/**
+ * struct pcs_device - pinctrl device instance
+ * @res: resources
+ * @base: virtual address of the controller
+ * @size: size of the ioremapped area
+ * @dev: device entry
+ * @pctl: pin controller device
+ * @mutex: mutex protecting the lists
+ * @width: bits per mux register
+ * @fmask: function register mask
+ * @fshift: function register shift
+ * @foff: value to turn mux off
+ * @fmax: max number of functions in fmask
+ * @names: array of register names for pins
+ * @pins: physical pins on the SoC
+ * @pgtree: pingroup index radix tree
+ * @ftree: function index radix tree
+ * @pingroups: list of pingroups
+ * @functions: list of functions
+ * @ngroups: number of pingroups
+ * @nfuncs: number of functions
+ * @desc: pin controller descriptor
+ * @read: register read function to use
+ * @write: register write function to use
+ */
+struct pcs_device {
+ struct resource *res;
+ void __iomem *base;
+ unsigned size;
+ struct device *dev;
+ struct pinctrl_dev *pctl;
+ struct mutex mutex;
+ unsigned width;
+ unsigned fmask;
+ unsigned fshift;
+ unsigned foff;
+ unsigned fmax;
+ struct pcs_name *names;
+ struct pcs_data pins;
+ struct radix_tree_root pgtree;
+ struct radix_tree_root ftree;
+ struct list_head pingroups;
+ struct list_head functions;
+ unsigned ngroups;
+ unsigned nfuncs;
+ struct pinctrl_desc desc;
+ unsigned (*read)(void __iomem *reg);
+ void (*write)(unsigned val, void __iomem *reg);
+};
+
+/*
+ * REVISIT: Reads and writes could eventually use regmap or something
+ * generic. But at least on omaps, some mux registers are performance
+ * critical as they may need to be remuxed every time before and after
+ * idle. Adding tests for register access width for every read and
+ * write like regmap is doing is not desired, and caching the registers
+ * does not help in this case.
+ */
+
+static unsigned __maybe_unused pcs_readb(void __iomem *reg)
+{
+ return readb(reg);
+}
+
+static unsigned __maybe_unused pcs_readw(void __iomem *reg)
+{
+ return readw(reg);
+}
+
+static unsigned __maybe_unused pcs_readl(void __iomem *reg)
+{
+ return readl(reg);
+}
+
+static void __maybe_unused pcs_writeb(unsigned val, void __iomem *reg)
+{
+ writeb(val, reg);
+}
+
+static void __maybe_unused pcs_writew(unsigned val, void __iomem *reg)
+{
+ writew(val, reg);
+}
+
+static void __maybe_unused pcs_writel(unsigned val, void __iomem *reg)
+{
+ writel(val, reg);
+}
+
+static int pcs_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct pcs_device *pcs;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+
+ return pcs->ngroups;
+}
+
+static const char *pcs_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned gselector)
+{
+ struct pcs_device *pcs;
+ struct pcs_pingroup *group;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ group = radix_tree_lookup(&pcs->pgtree, gselector);
+ if (!group) {
+ dev_err(pcs->dev, "%s could not find pingroup%i\n",
+ __func__, gselector);
+ return NULL;
+ }
+
+ return group->name;
+}
+
+static int pcs_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned gselector,
+ const unsigned **pins,
+ unsigned *npins)
+{
+ struct pcs_device *pcs;
+ struct pcs_pingroup *group;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ group = radix_tree_lookup(&pcs->pgtree, gselector);
+ if (!group) {
+ dev_err(pcs->dev, "%s could not find pingroup%i\n",
+ __func__, gselector);
+ return -EINVAL;
+ }
+
+ *pins = group->gpins;
+ *npins = group->ngpins;
+
+ return 0;
+}
+
+static void pcs_pin_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s,
+ unsigned offset)
+{
+ seq_printf(s, " " DRIVER_NAME);
+}
+
+static void pcs_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+ struct pcs_device *pcs;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ devm_kfree(pcs->dev, map);
+}
+
+static int pcs_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np_config,
+ struct pinctrl_map **map, unsigned *num_maps);
+
+static struct pinctrl_ops pcs_pinctrl_ops = {
+ .get_groups_count = pcs_get_groups_count,
+ .get_group_name = pcs_get_group_name,
+ .get_group_pins = pcs_get_group_pins,
+ .pin_dbg_show = pcs_pin_dbg_show,
+ .dt_node_to_map = pcs_dt_node_to_map,
+ .dt_free_map = pcs_dt_free_map,
+};
+
+static int pcs_get_functions_count(struct pinctrl_dev *pctldev)
+{
+ struct pcs_device *pcs;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+
+ return pcs->nfuncs;
+}
+
+static const char *pcs_get_function_name(struct pinctrl_dev *pctldev,
+ unsigned fselector)
+{
+ struct pcs_device *pcs;
+ struct pcs_function *func;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ func = radix_tree_lookup(&pcs->ftree, fselector);
+ if (!func) {
+ dev_err(pcs->dev, "%s could not find function%i\n",
+ __func__, fselector);
+ return NULL;
+ }
+
+ return func->name;
+}
+
+static int pcs_get_function_groups(struct pinctrl_dev *pctldev,
+ unsigned fselector,
+ const char * const **groups,
+ unsigned * const ngroups)
+{
+ struct pcs_device *pcs;
+ struct pcs_function *func;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ func = radix_tree_lookup(&pcs->ftree, fselector);
+ if (!func) {
+ dev_err(pcs->dev, "%s could not find function%i\n",
+ __func__, fselector);
+ return -EINVAL;
+ }
+ *groups = func->pgnames;
+ *ngroups = func->npgnames;
+
+ return 0;
+}
+
+static int pcs_enable(struct pinctrl_dev *pctldev, unsigned fselector,
+ unsigned group)
+{
+ struct pcs_device *pcs;
+ struct pcs_function *func;
+ int i;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ func = radix_tree_lookup(&pcs->ftree, fselector);
+ if (!func)
+ return -EINVAL;
+
+ dev_dbg(pcs->dev, "enabling %s function%i\n",
+ func->name, fselector);
+
+ for (i = 0; i < func->nvals; i++) {
+ struct pcs_func_vals *vals;
+ unsigned val;
+
+ vals = &func->vals[i];
+ val = pcs->read(vals->reg);
+ val &= ~pcs->fmask;
+ val |= vals->val;
+ pcs->write(val, vals->reg);
+ }
+
+ return 0;
+}
+
+static void pcs_disable(struct pinctrl_dev *pctldev, unsigned fselector,
+ unsigned group)
+{
+ struct pcs_device *pcs;
+ struct pcs_function *func;
+ int i;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+ func = radix_tree_lookup(&pcs->ftree, fselector);
+ if (!func) {
+ dev_err(pcs->dev, "%s could not find function%i\n",
+ __func__, fselector);
+ return;
+ }
+
+ /*
+ * Ignore disable if function-off is not specified. Some hardware
+ * does not have clearly defined disable function. For pin specific
+ * off modes, you can use alternate named states as described in
+ * pinctrl-bindings.txt.
+ */
+ if (pcs->foff == PCS_OFF_DISABLED) {
+ dev_dbg(pcs->dev, "ignoring disable for %s function%i\n",
+ func->name, fselector);
+ return;
+ }
+
+ dev_dbg(pcs->dev, "disabling function%i %s\n",
+ fselector, func->name);
+
+ for (i = 0; i < func->nvals; i++) {
+ struct pcs_func_vals *vals;
+ unsigned val;
+
+ vals = &func->vals[i];
+ val = pcs->read(vals->reg);
+ val &= ~pcs->fmask;
+ val |= pcs->foff << pcs->fshift;
+ pcs->write(val, vals->reg);
+ }
+}
+
+static int pcs_request_gpio(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range, unsigned offset)
+{
+ return -ENOTSUPP;
+}
+
+static struct pinmux_ops pcs_pinmux_ops = {
+ .get_functions_count = pcs_get_functions_count,
+ .get_function_name = pcs_get_function_name,
+ .get_function_groups = pcs_get_function_groups,
+ .enable = pcs_enable,
+ .disable = pcs_disable,
+ .gpio_request_enable = pcs_request_gpio,
+};
+
+static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned pin, unsigned long *config)
+{
+ return -ENOTSUPP;
+}
+
+static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned pin, unsigned long config)
+{
+ return -ENOTSUPP;
+}
+
+static int pcs_pinconf_group_get(struct pinctrl_dev *pctldev,
+ unsigned group, unsigned long *config)
+{
+ return -ENOTSUPP;
+}
+
+static int pcs_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned group, unsigned long config)
+{
+ return -ENOTSUPP;
+}
+
+static void pcs_pinconf_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned offset)
+{
+}
+
+static void pcs_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned selector)
+{
+}
+
+static struct pinconf_ops pcs_pinconf_ops = {
+ .pin_config_get = pcs_pinconf_get,
+ .pin_config_set = pcs_pinconf_set,
+ .pin_config_group_get = pcs_pinconf_group_get,
+ .pin_config_group_set = pcs_pinconf_group_set,
+ .pin_config_dbg_show = pcs_pinconf_dbg_show,
+ .pin_config_group_dbg_show = pcs_pinconf_group_dbg_show,
+};
+
+/**
+ * pcs_add_pin() - add a pin to the static per controller pin array
+ * @pcs: pcs driver instance
+ * @offset: register offset from base
+ */
+static int __devinit pcs_add_pin(struct pcs_device *pcs, unsigned offset)
+{
+ struct pinctrl_pin_desc *pin;
+ struct pcs_name *pn;
+ int i;
+
+ i = pcs->pins.cur;
+ if (i >= pcs->desc.npins) {
+ dev_err(pcs->dev, "too many pins, max %i\n",
+ pcs->desc.npins);
+ return -ENOMEM;
+ }
+
+ pin = &pcs->pins.pa[i];
+ pn = &pcs->names[i];
+ sprintf(pn->name, "%lx",
+ (unsigned long)pcs->res->start + offset);
+ pin->name = pn->name;
+ pin->number = i;
+ pcs->pins.cur++;
+
+ return i;
+}
+
+/**
+ * pcs_allocate_pin_table() - adds all the pins for the pinctrl driver
+ * @pcs: pcs driver instance
+ *
+ * In case of errors, resources are freed in pcs_free_resources.
+ *
+ * If your hardware needs holes in the address space, then just set
+ * up multiple driver instances.
+ */
+static int __devinit pcs_allocate_pin_table(struct pcs_device *pcs)
+{
+ int mux_bytes, nr_pins, i;
+
+ mux_bytes = pcs->width / BITS_PER_BYTE;
+ nr_pins = pcs->size / mux_bytes;
+
+ dev_dbg(pcs->dev, "allocating %i pins\n", nr_pins);
+ pcs->pins.pa = devm_kzalloc(pcs->dev,
+ sizeof(*pcs->pins.pa) * nr_pins,
+ GFP_KERNEL);
+ if (!pcs->pins.pa)
+ return -ENOMEM;
+
+ pcs->names = devm_kzalloc(pcs->dev,
+ sizeof(struct pcs_name) * nr_pins,
+ GFP_KERNEL);
+ if (!pcs->names)
+ return -ENOMEM;
+
+ pcs->desc.pins = pcs->pins.pa;
+ pcs->desc.npins = nr_pins;
+
+ for (i = 0; i < pcs->desc.npins; i++) {
+ unsigned offset;
+ int res;
+
+ offset = i * mux_bytes;
+ res = pcs_add_pin(pcs, offset);
+ if (res < 0) {
+ dev_err(pcs->dev, "error adding pins: %i\n", res);
+ return res;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * pcs_add_function() - adds a new function to the function list
+ * @pcs: pcs driver instance
+ * @np: device node of the mux entry
+ * @name: name of the function
+ * @vals: array of mux register value pairs used by the function
+ * @nvals: number of mux register value pairs
+ * @pgnames: array of pingroup names for the function
+ * @npgnames: number of pingroup names
+ */
+static struct pcs_function *pcs_add_function(struct pcs_device *pcs,
+ struct device_node *np,
+ const char *name,
+ struct pcs_func_vals *vals,
+ unsigned nvals,
+ const char **pgnames,
+ unsigned npgnames)
+{
+ struct pcs_function *function;
+
+ function = devm_kzalloc(pcs->dev, sizeof(*function), GFP_KERNEL);
+ if (!function)
+ return NULL;
+
+ function->name = name;
+ function->vals = vals;
+ function->nvals = nvals;
+ function->pgnames = pgnames;
+ function->npgnames = npgnames;
+
+ mutex_lock(&pcs->mutex);
+ list_add_tail(&function->node, &pcs->functions);
+ radix_tree_insert(&pcs->ftree, pcs->nfuncs, function);
+ pcs->nfuncs++;
+ mutex_unlock(&pcs->mutex);
+
+ return function;
+}
+
+static void pcs_remove_function(struct pcs_device *pcs,
+ struct pcs_function *function)
+{
+ int i;
+
+ mutex_lock(&pcs->mutex);
+ for (i = 0; i < pcs->nfuncs; i++) {
+ struct pcs_function *found;
+
+ found = radix_tree_lookup(&pcs->ftree, i);
+ if (found == function)
+ radix_tree_delete(&pcs->ftree, i);
+ }
+ list_del(&function->node);
+ mutex_unlock(&pcs->mutex);
+}
+
+/**
+ * pcs_add_pingroup() - add a pingroup to the pingroup list
+ * @pcs: pcs driver instance
+ * @np: device node of the mux entry
+ * @name: name of the pingroup
+ * @gpins: array of the pins that belong to the group
+ * @ngpins: number of pins in the group
+ */
+static int pcs_add_pingroup(struct pcs_device *pcs,
+ struct device_node *np,
+ const char *name,
+ int *gpins,
+ int ngpins)
+{
+ struct pcs_pingroup *pingroup;
+
+ pingroup = devm_kzalloc(pcs->dev, sizeof(*pingroup), GFP_KERNEL);
+ if (!pingroup)
+ return -ENOMEM;
+
+ pingroup->name = name;
+ pingroup->np = np;
+ pingroup->gpins = gpins;
+ pingroup->ngpins = ngpins;
+
+ mutex_lock(&pcs->mutex);
+ list_add_tail(&pingroup->node, &pcs->pingroups);
+ radix_tree_insert(&pcs->pgtree, pcs->ngroups, pingroup);
+ pcs->ngroups++;
+ mutex_unlock(&pcs->mutex);
+
+ return 0;
+}
+
+/**
+ * pcs_get_pin_by_offset() - get a pin index based on the register offset
+ * @pcs: pcs driver instance
+ * @offset: register offset from the base
+ *
+ * Note that this is OK as long as the pins are in a static array.
+ */
+static int pcs_get_pin_by_offset(struct pcs_device *pcs, unsigned offset)
+{
+ unsigned index;
+
+ if (offset >= pcs->size) {
+ dev_err(pcs->dev, "mux offset out of range: 0x%x (0x%x)\n",
+ offset, pcs->size);
+ return -EINVAL;
+ }
+
+ index = offset / (pcs->width / BITS_PER_BYTE);
+
+ return index;
+}
+
+/**
+ * smux_parse_one_pinctrl_entry() - parses a device tree mux entry
+ * @pcs: pinctrl driver instance
+ * @np: device node of the mux entry
+ * @map: map entry
+ * @pgnames: pingroup names
+ *
+ * Note that this binding currently supports only sets of one register + value.
+ *
+ * Also note that this driver tries to avoid understanding pin and function
+ * names because of the extra bloat they would cause especially in the case of
+ * a large number of pins. This driver just sets what is specified for the board
+ * in the .dts file. Further user space debugging tools can be developed to
+ * decipher the pin and function names using debugfs.
+ *
+ * If you are concerned about the boot time, set up the static pins in
+ * the bootloader, and only set up selected pins as device tree entries.
+ */
+static int pcs_parse_one_pinctrl_entry(struct pcs_device *pcs,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ const char **pgnames)
+{
+ struct pcs_func_vals *vals;
+ const __be32 *mux;
+ int size, rows, *pins, index = 0, found = 0, res = -ENOMEM;
+ struct pcs_function *function;
+
+ mux = of_get_property(np, PCS_MUX_NAME, &size);
+ if ((!mux) || (size < sizeof(*mux) * 2)) {
+ dev_err(pcs->dev, "bad data for mux %s\n",
+ np->name);
+ return -EINVAL;
+ }
+
+ size /= sizeof(*mux); /* Number of elements in array */
+ rows = size / 2; /* Each row is a key value pair */
+
+ vals = devm_kzalloc(pcs->dev, sizeof(*vals) * rows, GFP_KERNEL);
+ if (!vals)
+ return -ENOMEM;
+
+ pins = devm_kzalloc(pcs->dev, sizeof(*pins) * rows, GFP_KERNEL);
+ if (!pins)
+ goto free_vals;
+
+ while (index < size) {
+ unsigned offset, val;
+ int pin;
+
+ offset = be32_to_cpup(mux + index++);
+ val = be32_to_cpup(mux + index++);
+ vals[found].reg = pcs->base + offset;
+ vals[found].val = val;
+
+ pin = pcs_get_pin_by_offset(pcs, offset);
+ if (pin < 0) {
+ dev_err(pcs->dev,
+ "could not add functions for %s %ux\n",
+ np->name, offset);
+ break;
+ }
+ pins[found++] = pin;
+ }
+
+ pgnames[0] = np->name;
+ function = pcs_add_function(pcs, np, np->name, vals, found, pgnames, 1);
+ if (!function)
+ goto free_pins;
+
+ res = pcs_add_pingroup(pcs, np, np->name, pins, found);
+ if (res < 0)
+ goto free_function;
+
+ (*map)->type = PIN_MAP_TYPE_MUX_GROUP;
+ (*map)->data.mux.group = np->name;
+ (*map)->data.mux.function = np->name;
+
+ return 0;
+
+free_function:
+ pcs_remove_function(pcs, function);
+
+free_pins:
+ devm_kfree(pcs->dev, pins);
+
+free_vals:
+ devm_kfree(pcs->dev, vals);
+
+ return res;
+}
+/**
+ * pcs_dt_node_to_map() - allocates and parses pinctrl maps
+ * @pctldev: pinctrl instance
+ * @np_config: device tree pinmux entry
+ * @map: array of map entries
+ * @num_maps: number of maps
+ */
+static int pcs_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np_config,
+ struct pinctrl_map **map, unsigned *num_maps)
+{
+ struct pcs_device *pcs;
+ const char **pgnames;
+ int ret;
+
+ pcs = pinctrl_dev_get_drvdata(pctldev);
+
+ *map = devm_kzalloc(pcs->dev, sizeof(**map), GFP_KERNEL);
+ if (!map)
+ return -ENOMEM;
+
+ *num_maps = 0;
+
+ pgnames = devm_kzalloc(pcs->dev, sizeof(*pgnames), GFP_KERNEL);
+ if (!pgnames) {
+ ret = -ENOMEM;
+ goto free_map;
+ }
+
+ ret = pcs_parse_one_pinctrl_entry(pcs, np_config, map, pgnames);
+ if (ret < 0) {
+ dev_err(pcs->dev, "no pins entries for %s\n",
+ np_config->name);
+ goto free_pgnames;
+ }
+ *num_maps = 1;
+
+ return 0;
+
+free_pgnames:
+ devm_kfree(pcs->dev, pgnames);
+free_map:
+ devm_kfree(pcs->dev, *map);
+
+ return ret;
+}
+
+/**
+ * pcs_free_funcs() - free memory used by functions
+ * @pcs: pcs driver instance
+ */
+static void pcs_free_funcs(struct pcs_device *pcs)
+{
+ struct list_head *pos, *tmp;
+ int i;
+
+ mutex_lock(&pcs->mutex);
+ for (i = 0; i < pcs->nfuncs; i++) {
+ struct pcs_function *func;
+
+ func = radix_tree_lookup(&pcs->ftree, i);
+ if (!func)
+ continue;
+ radix_tree_delete(&pcs->ftree, i);
+ }
+ list_for_each_safe(pos, tmp, &pcs->functions) {
+ struct pcs_function *function;
+
+ function = list_entry(pos, struct pcs_function, node);
+ list_del(&function->node);
+ }
+ mutex_unlock(&pcs->mutex);
+}
+
+/**
+ * pcs_free_pingroups() - free memory used by pingroups
+ * @pcs: pcs driver instance
+ */
+static void pcs_free_pingroups(struct pcs_device *pcs)
+{
+ struct list_head *pos, *tmp;
+ int i;
+
+ mutex_lock(&pcs->mutex);
+ for (i = 0; i < pcs->ngroups; i++) {
+ struct pcs_pingroup *pingroup;
+
+ pingroup = radix_tree_lookup(&pcs->pgtree, i);
+ if (!pingroup)
+ continue;
+ radix_tree_delete(&pcs->pgtree, i);
+ }
+ list_for_each_safe(pos, tmp, &pcs->pingroups) {
+ struct pcs_pingroup *pingroup;
+
+ pingroup = list_entry(pos, struct pcs_pingroup, node);
+ list_del(&pingroup->node);
+ }
+ mutex_unlock(&pcs->mutex);
+}
+
+/**
+ * pcs_free_resources() - free memory used by this driver
+ * @pcs: pcs driver instance
+ */
+static void pcs_free_resources(struct pcs_device *pcs)
+{
+ if (pcs->pctl)
+ pinctrl_unregister(pcs->pctl);
+
+ pcs_free_funcs(pcs);
+ pcs_free_pingroups(pcs);
+}
+
+#define PCS_GET_PROP_U32(name, reg, err) \
+ do { \
+ ret = of_property_read_u32(np, name, reg); \
+ if (ret) { \
+ dev_err(pcs->dev, err); \
+ return ret; \
+ } \
+ } while (0);
+
+static struct of_device_id pcs_of_match[];
+
+static int __devinit pcs_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *match;
+ struct resource *res;
+ struct pcs_device *pcs;
+ int ret;
+
+ match = of_match_device(pcs_of_match, &pdev->dev);
+ if (!match)
+ return -EINVAL;
+
+ pcs = devm_kzalloc(&pdev->dev, sizeof(*pcs), GFP_KERNEL);
+ if (!pcs) {
+ dev_err(&pdev->dev, "could not allocate\n");
+ return -ENOMEM;
+ }
+ pcs->dev = &pdev->dev;
+ mutex_init(&pcs->mutex);
+ INIT_LIST_HEAD(&pcs->pingroups);
+ INIT_LIST_HEAD(&pcs->functions);
+
+ PCS_GET_PROP_U32("pinctrl-single,register-width", &pcs->width,
+ "register width not specified\n");
+
+ PCS_GET_PROP_U32("pinctrl-single,function-mask", &pcs->fmask,
+ "function register mask not specified\n");
+ pcs->fshift = ffs(pcs->fmask) - 1;
+ pcs->fmax = pcs->fmask >> pcs->fshift;
+
+ ret = of_property_read_u32(np, "pinctrl-single,function-off",
+ &pcs->foff);
+ if (ret)
+ pcs->foff = PCS_OFF_DISABLED;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(pcs->dev, "could not get resource\n");
+ return -ENODEV;
+ }
+
+ pcs->res = devm_request_mem_region(pcs->dev, res->start,
+ resource_size(res), DRIVER_NAME);
+ if (!pcs->res) {
+ dev_err(pcs->dev, "could not get mem_region\n");
+ return -EBUSY;
+ }
+
+ pcs->size = resource_size(pcs->res);
+ pcs->base = devm_ioremap(pcs->dev, pcs->res->start, pcs->size);
+ if (!pcs->base) {
+ dev_err(pcs->dev, "could not ioremap\n");
+ return -ENODEV;
+ }
+
+ INIT_RADIX_TREE(&pcs->pgtree, GFP_KERNEL);
+ INIT_RADIX_TREE(&pcs->ftree, GFP_KERNEL);
+ platform_set_drvdata(pdev, pcs);
+
+ switch (pcs->width) {
+ case 8:
+ pcs->read = pcs_readb;
+ pcs->write = pcs_writeb;
+ break;
+ case 16:
+ pcs->read = pcs_readw;
+ pcs->write = pcs_writew;
+ break;
+ case 32:
+ pcs->read = pcs_readl;
+ pcs->write = pcs_writel;
+ break;
+ default:
+ break;
+ }
+
+ pcs->desc.name = DRIVER_NAME;
+ pcs->desc.pctlops = &pcs_pinctrl_ops;
+ pcs->desc.pmxops = &pcs_pinmux_ops;
+ pcs->desc.confops = &pcs_pinconf_ops;
+ pcs->desc.owner = THIS_MODULE;
+
+ ret = pcs_allocate_pin_table(pcs);
+ if (ret < 0)
+ goto free;
+
+ pcs->pctl = pinctrl_register(&pcs->desc, pcs->dev, pcs);
+ if (!pcs->pctl) {
+ dev_err(pcs->dev, "could not register single pinctrl driver\n");
+ ret = -EINVAL;
+ goto free;
+ }
+
+ dev_info(pcs->dev, "%i pins at pa %p size %u\n",
+ pcs->desc.npins, pcs->base, pcs->size);
+
+ return 0;
+
+free:
+ pcs_free_resources(pcs);
+
+ return ret;
+}
+
+static int __devexit pcs_remove(struct platform_device *pdev)
+{
+ struct pcs_device *pcs = platform_get_drvdata(pdev);
+
+ if (!pcs)
+ return 0;
+
+ pcs_free_resources(pcs);
+
+ return 0;
+}
+
+static struct of_device_id pcs_of_match[] __devinitdata = {
+ { .compatible = DRIVER_NAME, },
+ { },
+};
+MODULE_DEVICE_TABLE(of, pcs_of_match);
+
+static struct platform_driver pcs_driver = {
+ .probe = pcs_probe,
+ .remove = __devexit_p(pcs_remove),
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .of_match_table = pcs_of_match,
+ },
+};
+
+module_platform_driver(pcs_driver);
+
+MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>");
+MODULE_DESCRIPTION("One-register-per-pin type device tree based pinctrl driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c
index b6934867d8d3..ae52e4e5d098 100644
--- a/drivers/pinctrl/pinctrl-tegra.c
+++ b/drivers/pinctrl/pinctrl-tegra.c
@@ -745,9 +745,9 @@ int __devinit tegra_pinctrl_probe(struct platform_device *pdev,
}
pmx->pctl = pinctrl_register(&tegra_pinctrl_desc, &pdev->dev, pmx);
- if (IS_ERR(pmx->pctl)) {
+ if (!pmx->pctl) {
dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
- return PTR_ERR(pmx->pctl);
+ return -ENODEV;
}
pinctrl_add_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range);
@@ -764,7 +764,6 @@ int __devexit tegra_pinctrl_remove(struct platform_device *pdev)
{
struct tegra_pmx *pmx = platform_get_drvdata(pdev);
- pinctrl_remove_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range);
pinctrl_unregister(pmx->pctl);
return 0;
diff --git a/drivers/pinctrl/pinctrl-u300.c b/drivers/pinctrl/pinctrl-u300.c
index 05d029911be6..a7ad8c112d91 100644
--- a/drivers/pinctrl/pinctrl-u300.c
+++ b/drivers/pinctrl/pinctrl-u300.c
@@ -1113,8 +1113,6 @@ static int __devinit u300_pmx_probe(struct platform_device *pdev)
int ret;
int i;
- pr_err("U300 PMX PROBE\n");
-
/* Create state holders etc for this driver */
upmx = devm_kzalloc(&pdev->dev, sizeof(*upmx), GFP_KERNEL);
if (!upmx)
@@ -1175,15 +1173,11 @@ out_no_resource:
static int __devexit u300_pmx_remove(struct platform_device *pdev)
{
struct u300_pmx *upmx = platform_get_drvdata(pdev);
- int i;
- for (i = 0; i < ARRAY_SIZE(u300_gpio_ranges); i++)
- pinctrl_remove_gpio_range(upmx->pctl, &u300_gpio_ranges[i]);
pinctrl_unregister(upmx->pctl);
iounmap(upmx->virtbase);
release_mem_region(upmx->phybase, upmx->physize);
platform_set_drvdata(pdev, NULL);
- devm_kfree(&pdev->dev, upmx);
return 0;
}
diff --git a/drivers/pinctrl/spear/pinctrl-spear.c b/drivers/pinctrl/spear/pinctrl-spear.c
index b3f6b2873fdd..5d4f44f462f0 100644
--- a/drivers/pinctrl/spear/pinctrl-spear.c
+++ b/drivers/pinctrl/spear/pinctrl-spear.c
@@ -336,9 +336,9 @@ int __devinit spear_pinctrl_probe(struct platform_device *pdev,
spear_pinctrl_desc.npins = machdata->npins;
pmx->pctl = pinctrl_register(&spear_pinctrl_desc, &pdev->dev, pmx);
- if (IS_ERR(pmx->pctl)) {
+ if (!pmx->pctl) {
dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
- return PTR_ERR(pmx->pctl);
+ return -ENODEV;
}
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 02:06:29 +0000