diff options
Diffstat (limited to 'arch/unicore32/kernel/pwm.c')
| -rw-r--r-- | arch/unicore32/kernel/pwm.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/unicore32/kernel/pwm.c b/arch/unicore32/kernel/pwm.c index 4615d51..885bbcd 100644 --- a/arch/unicore32/kernel/pwm.c +++ b/arch/unicore32/kernel/pwm.c @@ -27,6 +27,8 @@ struct pwm_device { struct list_head node; struct platform_device *pdev; + void __iomem *base; + const char *label; struct clk *clk; int clk_enabled; @@ -69,9 +71,11 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) * before writing to the registers */ clk_enable(pwm->clk); - OST_PWMPWCR = prescale; - OST_PWMDCCR = pv - dc; - OST_PWMPCR = pv; + + writel(prescale, pwm->base + OST_PWM_PWCR); + writel(pv - dc, pwm->base + OST_PWM_DCCR); + writel(pv, pwm->base + OST_PWM_PCR); + clk_disable(pwm->clk); return 0; @@ -190,10 +194,19 @@ static struct pwm_device *pwm_probe(struct platform_device *pdev, goto err_free_clk; } + pwm->base = ioremap_nocache(r->start, resource_size(r)); + if (pwm->base == NULL) { + dev_err(&pdev->dev, "failed to remap memory resource\n"); + ret = -EADDRNOTAVAIL; + goto err_release_mem; + } + __add_pwm(pwm); platform_set_drvdata(pdev, pwm); return pwm; +err_release_mem: + release_mem_region(r->start, resource_size(r)); err_free_clk: clk_put(pwm->clk); err_free: @@ -224,6 +237,8 @@ static int __devexit pwm_remove(struct platform_device *pdev) list_del(&pwm->node); mutex_unlock(&pwm_lock); + iounmap(pwm->base); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(r->start, resource_size(r)); |
