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watchdog: sp805: Use devm_clk_get_optional()
Replace open coded variants of devm_clk_get_optional(). While at it, drop unneeded OF and ACPI dependency as the APIs in use are provider agnostic. Cc: Srinath Mannam <srinath.mannam@broadcom.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com> Link: https://lore.kernel.org/r/20210517174456.22050-1-andriy.shevchenko@linux.intel.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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742b80c561
commit
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1 changed files with 19 additions and 21 deletions
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@ -11,7 +11,6 @@
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/resource.h>
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#include <linux/amba/bus.h>
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@ -23,8 +22,8 @@
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#include <linux/math64.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/of.h>
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#include <linux/pm.h>
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#include <linux/property.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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@ -231,6 +230,7 @@ static int
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sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
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{
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struct sp805_wdt *wdt;
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u64 rate = 0;
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int ret = 0;
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wdt = devm_kzalloc(&adev->dev, sizeof(*wdt), GFP_KERNEL);
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@ -243,25 +243,23 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
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if (IS_ERR(wdt->base))
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return PTR_ERR(wdt->base);
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if (adev->dev.of_node) {
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wdt->clk = devm_clk_get(&adev->dev, NULL);
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if (IS_ERR(wdt->clk)) {
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dev_err(&adev->dev, "Clock not found\n");
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return PTR_ERR(wdt->clk);
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}
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wdt->rate = clk_get_rate(wdt->clk);
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} else if (has_acpi_companion(&adev->dev)) {
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/*
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* When Driver probe with ACPI device, clock devices
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* are not available, so watchdog rate get from
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* clock-frequency property given in _DSD object.
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*/
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device_property_read_u64(&adev->dev, "clock-frequency",
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&wdt->rate);
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if (!wdt->rate) {
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dev_err(&adev->dev, "no clock-frequency property\n");
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return -ENODEV;
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}
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/*
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* When driver probe with ACPI device, clock devices
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* are not available, so watchdog rate get from
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* clock-frequency property given in _DSD object.
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*/
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device_property_read_u64(&adev->dev, "clock-frequency", &rate);
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wdt->clk = devm_clk_get_optional(&adev->dev, NULL);
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if (IS_ERR(wdt->clk))
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return dev_err_probe(&adev->dev, PTR_ERR(wdt->clk), "Clock not found\n");
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wdt->rate = clk_get_rate(wdt->clk);
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if (!wdt->rate)
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wdt->rate = rate;
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if (!wdt->rate) {
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dev_err(&adev->dev, "no clock-frequency property\n");
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return -ENODEV;
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}
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wdt->adev = adev;
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