diff options
Diffstat (limited to 'target/linux/mx2/patches-2.6.34/040-pwm.patch')
| -rw-r--r-- | target/linux/mx2/patches-2.6.34/040-pwm.patch | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/target/linux/mx2/patches-2.6.34/040-pwm.patch b/target/linux/mx2/patches-2.6.34/040-pwm.patch index 55e846ec17..af47ad1de0 100644 --- a/target/linux/mx2/patches-2.6.34/040-pwm.patch +++ b/target/linux/mx2/patches-2.6.34/040-pwm.patch @@ -1,5 +1,3 @@ -diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c -index c36f263..acc5dc1 100644 --- a/arch/arm/plat-mxc/pwm.c +++ b/arch/arm/plat-mxc/pwm.c @@ -25,6 +25,11 @@ @@ -14,7 +12,7 @@ index c36f263..acc5dc1 100644 /* i.MX27, i.MX31, i.MX35 share the same PWM function block: */ -@@ -54,25 +59,32 @@ struct pwm_device { +@@ -54,26 +59,33 @@ struct pwm_device { int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) { @@ -24,43 +22,45 @@ index c36f263..acc5dc1 100644 if (pwm == NULL || period_ns == 0 || duty_ns > period_ns) return -EINVAL; -- if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) { -- unsigned long long c; -- unsigned long period_cycles, duty_cycles, prescale; -- u32 cr; + c = clk_get_rate(pwm->clk); + + c = c * period_ns; + + if (cpu_is_mx1() || cpu_is_mx2()) + c >>= 1; - -- c = clk_get_rate(pwm->clk); -- c = c * period_ns; -- do_div(c, 1000000000); -- period_cycles = c; ++ + do_div(c, 1000000000); + period_cycles = c; - -- prescale = period_cycles / 0x10000 + 1; ++ + prescale = period_cycles / 0x10000 + 1; - -- period_cycles /= prescale; -- c = (unsigned long long)period_cycles * duty_ns; -- do_div(c, period_ns); -- duty_cycles = c; ++ + period_cycles /= prescale; + c = (unsigned long long)period_cycles * duty_ns; + do_div(c, period_ns); + duty_cycles = c; + + -+ if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) { -+ u32 cr; + if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) { +- unsigned long long c; +- unsigned long period_cycles, duty_cycles, prescale; + u32 cr; +- c = clk_get_rate(pwm->clk); +- c = c * period_ns; +- do_div(c, 1000000000); +- period_cycles = c; +- +- prescale = period_cycles / 0x10000 + 1; +- +- period_cycles /= prescale; +- c = (unsigned long long)period_cycles * duty_ns; +- do_div(c, period_ns); +- duty_cycles = c; +- writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR); writel(period_cycles, pwm->mmio_base + MX3_PWMPR); -@@ -86,25 +98,28 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) + +@@ -86,25 +98,28 @@ int pwm_config(struct pwm_device *pwm, i writel(cr, pwm->mmio_base + MX3_PWMCR); } else if (cpu_is_mx1() || cpu_is_mx21()) { @@ -108,7 +108,7 @@ index c36f263..acc5dc1 100644 } else { BUG(); } -@@ -116,6 +130,11 @@ EXPORT_SYMBOL(pwm_config); +@@ -116,6 +131,11 @@ EXPORT_SYMBOL(pwm_config); int pwm_enable(struct pwm_device *pwm) { int rc = 0; @@ -120,7 +120,7 @@ index c36f263..acc5dc1 100644 if (!pwm->clk_enabled) { rc = clk_enable(pwm->clk); -@@ -128,7 +147,13 @@ EXPORT_SYMBOL(pwm_enable); +@@ -128,7 +148,13 @@ EXPORT_SYMBOL(pwm_enable); void pwm_disable(struct pwm_device *pwm) { |