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Message-Id: <20220329152926.50958-5-andriy.shevchenko@linux.intel.com>
Date: Tue, 29 Mar 2022 18:29:17 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Qianggui Song <qianggui.song@...ogic.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Fabien Dessenne <fabien.dessenne@...s.st.com>,
linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
openbmc@...ts.ozlabs.org, linux-renesas-soc@...r.kernel.org,
linux-samsung-soc@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com
Cc: Linus Walleij <linus.walleij@...aro.org>,
Neil Armstrong <narmstrong@...libre.com>,
Kevin Hilman <khilman@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Andrew Lunn <andrew@...n.ch>,
Gregory Clement <gregory.clement@...tlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Avi Fishman <avifishman70@...il.com>,
Tomer Maimon <tmaimon77@...il.com>,
Tali Perry <tali.perry1@...il.com>,
Patrick Venture <venture@...gle.com>,
Nancy Yuen <yuenn@...gle.com>,
Benjamin Fair <benjaminfair@...gle.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Tomasz Figa <tomasz.figa@...il.com>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Alim Akhtar <alim.akhtar@...sung.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Bartosz Golaszewski <brgl@...ev.pl>,
Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v2 04/13] pinctrl: stm32: Switch to use for_each_gpiochip_node() helper
Switch the code to use for_each_gpiochip_node() helper.
While at it, in order to avoid additional churn in the future,
switch to fwnode APIs where it makes sense.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
drivers/pinctrl/stm32/pinctrl-stm32.c | 72 ++++++++++++---------------
1 file changed, 33 insertions(+), 39 deletions(-)
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 4043a44211f0..3e2f1e3a84be 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -24,6 +24,7 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/slab.h>
@@ -1215,13 +1216,12 @@ static const struct pinconf_ops stm32_pconf_ops = {
.pin_config_dbg_show = stm32_pconf_dbg_show,
};
-static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
- struct device_node *np)
+static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode_handle *fwnode)
{
struct stm32_gpio_bank *bank = &pctl->banks[pctl->nbanks];
int bank_ioport_nr;
struct pinctrl_gpio_range *range = &bank->range;
- struct of_phandle_args args;
+ struct fwnode_reference_args args;
struct device *dev = pctl->dev;
struct resource res;
int npins = STM32_GPIO_PINS_PER_BANK;
@@ -1230,7 +1230,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
if (!IS_ERR(bank->rstc))
reset_control_deassert(bank->rstc);
- if (of_address_to_resource(np, 0, &res))
+ if (of_address_to_resource(to_of_node(fwnode), 0, &res))
return -ENODEV;
bank->base = devm_ioremap_resource(dev, &res);
@@ -1245,15 +1245,15 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
bank->gpio_chip = stm32_gpio_template;
- of_property_read_string(np, "st,bank-name", &bank->gpio_chip.label);
+ fwnode_property_read_string(fwnode, "st,bank-name", &bank->gpio_chip.label);
- if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, i, &args)) {
+ if (!fwnode_property_get_reference_args(fwnode, "gpio-ranges", NULL, 3, i, &args)) {
bank_nr = args.args[1] / STM32_GPIO_PINS_PER_BANK;
bank->gpio_chip.base = args.args[1];
/* get the last defined gpio line (offset + nb of pins) */
npins = args.args[0] + args.args[2];
- while (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, ++i, &args))
+ while (!fwnode_property_get_reference_args(fwnode, "gpio-ranges", NULL, 3, ++i, &args))
npins = max(npins, (int)(args.args[0] + args.args[2]));
} else {
bank_nr = pctl->nbanks;
@@ -1268,20 +1268,20 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
&pctl->banks[bank_nr].range);
}
- if (of_property_read_u32(np, "st,bank-ioport", &bank_ioport_nr))
+ if (fwnode_property_read_u32(fwnode, "st,bank-ioport", &bank_ioport_nr))
bank_ioport_nr = bank_nr;
bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK;
bank->gpio_chip.ngpio = npins;
- bank->gpio_chip.of_node = np;
+ bank->gpio_chip.fwnode = fwnode;
bank->gpio_chip.parent = dev;
bank->bank_nr = bank_nr;
bank->bank_ioport_nr = bank_ioport_nr;
spin_lock_init(&bank->lock);
/* create irq hierarchical domain */
- bank->fwnode = of_node_to_fwnode(np);
+ bank->fwnode = fwnode;
bank->domain = irq_domain_create_hierarchy(pctl->domain, 0,
STM32_GPIO_IRQ_LINE, bank->fwnode,
@@ -1418,7 +1418,7 @@ static int stm32_pctrl_create_pins_tab(struct stm32_pinctrl *pctl,
int stm32_pctl_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
- struct device_node *child;
+ struct fwnode_handle *child;
const struct of_device_id *match;
struct device *dev = &pdev->dev;
struct stm32_pinctrl *pctl;
@@ -1525,40 +1525,34 @@ int stm32_pctl_probe(struct platform_device *pdev)
return -ENOMEM;
i = 0;
- for_each_available_child_of_node(np, child) {
+ for_each_gpiochip_node(dev, child) {
struct stm32_gpio_bank *bank = &pctl->banks[i];
+ struct device_node *np = to_of_node(child);
- if (of_property_read_bool(child, "gpio-controller")) {
- bank->rstc = of_reset_control_get_exclusive(child,
- NULL);
- if (PTR_ERR(bank->rstc) == -EPROBE_DEFER) {
- of_node_put(child);
- return -EPROBE_DEFER;
- }
-
- bank->clk = of_clk_get_by_name(child, NULL);
- if (IS_ERR(bank->clk)) {
- if (PTR_ERR(bank->clk) != -EPROBE_DEFER)
- dev_err(dev,
- "failed to get clk (%ld)\n",
- PTR_ERR(bank->clk));
- of_node_put(child);
- return PTR_ERR(bank->clk);
- }
- i++;
+ bank->rstc = of_reset_control_get_exclusive(np, NULL);
+ if (PTR_ERR(bank->rstc) == -EPROBE_DEFER) {
+ fwnode_handle_put(child);
+ return -EPROBE_DEFER;
}
- }
- for_each_available_child_of_node(np, child) {
- if (of_property_read_bool(child, "gpio-controller")) {
- ret = stm32_gpiolib_register_bank(pctl, child);
- if (ret) {
- of_node_put(child);
- return ret;
- }
+ bank->clk = of_clk_get_by_name(np, NULL);
+ if (IS_ERR(bank->clk)) {
+ if (PTR_ERR(bank->clk) != -EPROBE_DEFER)
+ dev_err(dev, "failed to get clk (%ld)\n", PTR_ERR(bank->clk));
+ fwnode_handle_put(child);
+ return PTR_ERR(bank->clk);
+ }
+ i++;
+ }
- pctl->nbanks++;
+ for_each_gpiochip_node(dev, child) {
+ ret = stm32_gpiolib_register_bank(pctl, child);
+ if (ret) {
+ fwnode_handle_put(child);
+ return ret;
}
+
+ pctl->nbanks++;
}
dev_info(dev, "Pinctrl STM32 initialized\n");
--
2.35.1
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