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thermal: ti-soc-thermal: Use GPIO descriptors

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This switches the TI SoC thermal driver to use GPIO
descriptors instead of retrieveing a GPIO number from the
device tree and requesting the GPIO separately.

Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200229210532.173430-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2020-02-29 22:05:32 +01:00 committed by Daniel Lezcano
parent eb85046203
commit 7375f2ac6b
2 changed files with 15 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/thermal/ti-soc-thermal/ti-bandgap.c
View File

@ -15,7 +15,7 @@
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/types.h>
@ -24,7 +24,6 @@
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/io.h>
#include "ti-bandgap.h"
@ -743,27 +742,13 @@ exit:
static int ti_bandgap_tshut_init(struct ti_bandgap *bgp,
struct platform_device *pdev)
{
int gpio_nr = bgp->tshut_gpio;
int status;
/* Request for gpio_86 line */
status = gpio_request(gpio_nr, "tshut");
if (status < 0) {
dev_err(bgp->dev, "Could not request for TSHUT GPIO:%i\n", 86);
return status;
}
status = gpio_direction_input(gpio_nr);
if (status) {
dev_err(bgp->dev, "Cannot set input TSHUT GPIO %d\n", gpio_nr);
return status;
}
status = request_irq(gpio_to_irq(gpio_nr), ti_bandgap_tshut_irq_handler,
status = request_irq(gpiod_to_irq(bgp->tshut_gpiod),
ti_bandgap_tshut_irq_handler,
IRQF_TRIGGER_RISING, "tshut", NULL);
if (status) {
gpio_free(gpio_nr);
if (status)
dev_err(bgp->dev, "request irq failed for TSHUT");
}
return 0;
}
@ -860,11 +845,10 @@ static struct ti_bandgap *ti_bandgap_build(struct platform_device *pdev)
} while (res);
if (TI_BANDGAP_HAS(bgp, TSHUT)) {
bgp->tshut_gpio = of_get_gpio(node, 0);
if (!gpio_is_valid(bgp->tshut_gpio)) {
dev_err(&pdev->dev, "invalid gpio for tshut (%d)\n",
bgp->tshut_gpio);
return ERR_PTR(-EINVAL);
bgp->tshut_gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_IN);
if (IS_ERR(bgp->tshut_gpiod)) {
dev_err(&pdev->dev, "invalid gpio for tshut\n");
return ERR_CAST(bgp->tshut_gpiod);
}
}
@ -1046,10 +1030,8 @@ put_clks:
put_fclock:
clk_put(bgp->fclock);
free_irqs:
if (TI_BANDGAP_HAS(bgp, TSHUT)) {
free_irq(gpio_to_irq(bgp->tshut_gpio), NULL);
gpio_free(bgp->tshut_gpio);
}
if (TI_BANDGAP_HAS(bgp, TSHUT))
free_irq(gpiod_to_irq(bgp->tshut_gpiod), NULL);
return ret;
}
@ -1079,10 +1061,8 @@ int ti_bandgap_remove(struct platform_device *pdev)
if (TI_BANDGAP_HAS(bgp, TALERT))
free_irq(bgp->irq, bgp);
if (TI_BANDGAP_HAS(bgp, TSHUT)) {
free_irq(gpio_to_irq(bgp->tshut_gpio), NULL);
gpio_free(bgp->tshut_gpio);
}
if (TI_BANDGAP_HAS(bgp, TSHUT))
free_irq(gpiod_to_irq(bgp->tshut_gpiod), NULL);
return 0;
}

4
drivers/thermal/ti-soc-thermal/ti-bandgap.h
View File

@ -13,6 +13,8 @@
#include <linux/types.h>
#include <linux/err.h>
struct gpio_desc;
/**
* DOC: bandgap driver data structure
* ==================================
@ -199,7 +201,7 @@ struct ti_bandgap {
struct clk *div_clk;
spinlock_t lock; /* shields this struct */
int irq;
int tshut_gpio;
struct gpio_desc *tshut_gpiod;
u32 clk_rate;
};