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There is a copy and paste bug so we accidentally returned
PTR_ERR(ddata->clk) instead of "ret".
Fixes: 2b62c89448dd ("pwm: Add Loongson PWM controller support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://lore.kernel.org/r/6965a480-745c-426f-b17b-e96af532578f@stanley.mountain
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
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mul_u64_u64_div_u64() returns an u64 that might be bigger than U32_MAX.
To properly handle this case it must not be directly assigned to an u32
value.
Use a wider type for duty and period to make the idiom:
duty = mul_u64_u64_div_u64(...)
if (duty > U32_MAX)
duty = U32_MAX;
actually work as intended.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/44f3c764-8b65-49a9-b3ad-797e9fbb96f5@stanley.mountain
Fixes: 2b62c89448dd ("pwm: Add Loongson PWM controller support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://lore.kernel.org/r/20250412122124.1636152-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
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This commit adds a generic PWM framework driver for the PWM controller
found on Loongson family chips.
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Co-developed-by: Juxin Gao <gaojuxin@loongson.cn>
Signed-off-by: Juxin Gao <gaojuxin@loongson.cn>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://lore.kernel.org/r/76050a903a8015422fb9261ad88c7d9cc2edbbd8.1743403075.git.zhoubinbin@loongson.cn
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
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