struct brcmstb_pwm {
void __iomem *base;
- spinlock_t lock;
struct clk *clk;
struct pwm_chip chip;
};
* generator output a base frequency for the constant frequency
* generator to derive from.
*/
- spin_lock(&p->lock);
brcmstb_pwm_writel(p, cword >> 8, PWM_CWORD_MSB(channel));
brcmstb_pwm_writel(p, cword & 0xff, PWM_CWORD_LSB(channel));
/* Configure on and period value */
brcmstb_pwm_writel(p, pc, PWM_PERIOD(channel));
brcmstb_pwm_writel(p, dc, PWM_ON(channel));
- spin_unlock(&p->lock);
return 0;
}
unsigned int shift = channel * CTRL_CHAN_OFFS;
u32 value;
- spin_lock(&p->lock);
value = brcmstb_pwm_readl(p, PWM_CTRL);
if (enable) {
}
brcmstb_pwm_writel(p, value, PWM_CTRL);
- spin_unlock(&p->lock);
}
static int brcmstb_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (!p)
return -ENOMEM;
- spin_lock_init(&p->lock);
-
p->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(p->clk)) {
dev_err(&pdev->dev, "failed to obtain clock\n");