aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/pwm/pwm-pxa.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pwm/pwm-pxa.c')
-rw-r--r--drivers/pwm/pwm-pxa.c23
1 files changed, 5 insertions, 18 deletions
diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c
index 20370e61de5a..dee6ab552a0a 100644
--- a/drivers/pwm/pwm-pxa.c
+++ b/drivers/pwm/pwm-pxa.c
@@ -23,14 +23,13 @@
23#include <asm/div64.h> 23#include <asm/div64.h>
24 24
25#define HAS_SECONDARY_PWM 0x10 25#define HAS_SECONDARY_PWM 0x10
26#define PWM_ID_BASE(d) ((d) & 0xf)
27 26
28static const struct platform_device_id pwm_id_table[] = { 27static const struct platform_device_id pwm_id_table[] = {
29 /* PWM has_secondary_pwm? */ 28 /* PWM has_secondary_pwm? */
30 { "pxa25x-pwm", 0 }, 29 { "pxa25x-pwm", 0 },
31 { "pxa27x-pwm", 0 | HAS_SECONDARY_PWM }, 30 { "pxa27x-pwm", HAS_SECONDARY_PWM },
32 { "pxa168-pwm", 1 }, 31 { "pxa168-pwm", 0 },
33 { "pxa910-pwm", 1 }, 32 { "pxa910-pwm", 0 },
34 { }, 33 { },
35}; 34};
36MODULE_DEVICE_TABLE(platform, pwm_id_table); 35MODULE_DEVICE_TABLE(platform, pwm_id_table);
@@ -48,7 +47,6 @@ struct pxa_pwm_chip {
48 struct device *dev; 47 struct device *dev;
49 48
50 struct clk *clk; 49 struct clk *clk;
51 int clk_enabled;
52 void __iomem *mmio_base; 50 void __iomem *mmio_base;
53}; 51};
54 52
@@ -108,24 +106,15 @@ static int pxa_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
108static int pxa_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) 106static int pxa_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
109{ 107{
110 struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip); 108 struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip);
111 int rc = 0;
112 109
113 if (!pc->clk_enabled) { 110 return clk_prepare_enable(pc->clk);
114 rc = clk_prepare_enable(pc->clk);
115 if (!rc)
116 pc->clk_enabled++;
117 }
118 return rc;
119} 111}
120 112
121static void pxa_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) 113static void pxa_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
122{ 114{
123 struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip); 115 struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip);
124 116
125 if (pc->clk_enabled) { 117 clk_disable_unprepare(pc->clk);
126 clk_disable_unprepare(pc->clk);
127 pc->clk_enabled--;
128 }
129} 118}
130 119
131static struct pwm_ops pxa_pwm_ops = { 120static struct pwm_ops pxa_pwm_ops = {
@@ -152,8 +141,6 @@ static int pwm_probe(struct platform_device *pdev)
152 if (IS_ERR(pwm->clk)) 141 if (IS_ERR(pwm->clk))
153 return PTR_ERR(pwm->clk); 142 return PTR_ERR(pwm->clk);
154 143
155 pwm->clk_enabled = 0;
156
157 pwm->chip.dev = &pdev->dev; 144 pwm->chip.dev = &pdev->dev;
158 pwm->chip.ops = &pxa_pwm_ops; 145 pwm->chip.ops = &pxa_pwm_ops;
159 pwm->chip.base = -1; 146 pwm->chip.base = -1;