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gpio: stm32_gpio: Use clrsetbits_le32() at appropriate places

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Use clrsetbits_le32() to replace clrbits_le32() + setbits_le32().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
This commit is contained in:
Axel Lin 2015-04-26 10:32:36 +08:00 committed by Tom Rini
parent 5094befd84
commit 895b5d65c7
1 changed files with 5 additions and 13 deletions
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18
drivers/gpio/stm32_gpio.c
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@ -69,22 +69,14 @@ int stm32_gpio_config(const struct stm32_gpio_dsc *dsc,
setbits_le32(&STM32_RCC->ahb1enr, 1 << dsc->port);
i = (dsc->pin & 0x07) * 4;
clrbits_le32(&gpio_regs->afr[dsc->pin >> 3], (0xF << i));
setbits_le32(&gpio_regs->afr[dsc->pin >> 3], ctl->af << i);
clrsetbits_le32(&gpio_regs->afr[dsc->pin >> 3], 0xF << i, ctl->af << i);
i = dsc->pin * 2;
clrbits_le32(&gpio_regs->moder, (0x3 << i));
setbits_le32(&gpio_regs->moder, ctl->mode << i);
clrbits_le32(&gpio_regs->otyper, (0x3 << i));
setbits_le32(&gpio_regs->otyper, ctl->otype << i);
clrbits_le32(&gpio_regs->ospeedr, (0x3 << i));
setbits_le32(&gpio_regs->ospeedr, ctl->speed << i);
clrbits_le32(&gpio_regs->pupdr, (0x3 << i));
setbits_le32(&gpio_regs->pupdr, ctl->pupd << i);
clrsetbits_le32(&gpio_regs->moder, 0x3 << i, ctl->mode << i);
clrsetbits_le32(&gpio_regs->otyper, 0x3 << i, ctl->otype << i);
clrsetbits_le32(&gpio_regs->ospeedr, 0x3 << i, ctl->speed << i);
clrsetbits_le32(&gpio_regs->pupdr, 0x3 << i, ctl->pupd << i);
rv = 0;
out: