[PATCH 1/2] ARM imx53: add pwm devices support

[Eric Miao]

On Tue, Aug 30, 2011 at 3:52 PM,  <jason.chen at freescale.com> wrote:
> From: Jason Chen <b02280 at freescale.com>
>
> Signed-off-by: Jason Chen <b02280 at freescale.com>
> Signed-off-by: Jason Chen <jason.chen at linaro.org>

Looks good to me. Sascha, any comments?

Acked-by: Eric Miao <eric.miao at linaro.org>

> ---
>  arch/arm/mach-mx5/clock-mx51-mx53.c          |    2 ++
>  arch/arm/mach-mx5/devices-imx53.h            |    4 ++++
>  arch/arm/plat-mxc/devices/platform-mxc_pwm.c |    9 +++++++++
>  arch/arm/plat-mxc/pwm.c                      |    3 ++-
>  4 files changed, 17 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
> index f7bf996..f5f116f 100644
> --- a/arch/arm/mach-mx5/clock-mx51-mx53.c
> +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
> @@ -1507,6 +1507,8 @@ static struct clk_lookup mx53_lookups[] = {
>        _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk)
>        _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk)
>        _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk)
> +       _REGISTER_CLOCK("mxc_pwm.0", NULL, pwm1_clk)
> +       _REGISTER_CLOCK("mxc_pwm.1", NULL, pwm2_clk)
>  };
>
>  static void clk_tree_init(void)
> diff --git a/arch/arm/mach-mx5/devices-imx53.h b/arch/arm/mach-mx5/devices-imx53.h
> index c27fe8b..258e68f 100644
> --- a/arch/arm/mach-mx5/devices-imx53.h
> +++ b/arch/arm/mach-mx5/devices-imx53.h
> @@ -40,3 +40,7 @@ extern const struct imx_imx_ssi_data imx53_imx_ssi_data[];
>  extern const struct imx_imx_keypad_data imx53_imx_keypad_data;
>  #define imx53_add_imx_keypad(pdata)    \
>        imx_add_imx_keypad(&imx53_imx_keypad_data, pdata)
> +
> +extern const struct imx_mxc_pwm_data imx53_mxc_pwm_data[] __initconst;
> +#define imx53_add_mxc_pwm(id)  \
> +       imx_add_mxc_pwm(&imx53_mxc_pwm_data[id])
> diff --git a/arch/arm/plat-mxc/devices/platform-mxc_pwm.c b/arch/arm/plat-mxc/devices/platform-mxc_pwm.c
> index b0c4ae2..18cfd07 100644
> --- a/arch/arm/plat-mxc/devices/platform-mxc_pwm.c
> +++ b/arch/arm/plat-mxc/devices/platform-mxc_pwm.c
> @@ -49,6 +49,15 @@ const struct imx_mxc_pwm_data imx51_mxc_pwm_data[] __initconst = {
>  };
>  #endif /* ifdef CONFIG_SOC_IMX51 */
>
> +#ifdef CONFIG_SOC_IMX53
> +const struct imx_mxc_pwm_data imx53_mxc_pwm_data[] __initconst = {
> +#define imx53_mxc_pwm_data_entry(_id, _hwid)                           \
> +       imx_mxc_pwm_data_entry(MX53, _id, _hwid, SZ_16K)
> +       imx53_mxc_pwm_data_entry(0, 1),
> +       imx53_mxc_pwm_data_entry(1, 2),
> +};
> +#endif /* ifdef CONFIG_SOC_IMX53 */
> +
>  struct platform_device *__init imx_add_mxc_pwm(
>                const struct imx_mxc_pwm_data *data)
>  {
> diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
> index 761c3c9..5dda436 100644
> --- a/arch/arm/plat-mxc/pwm.c
> +++ b/arch/arm/plat-mxc/pwm.c
> @@ -57,7 +57,8 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
>        if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
>                return -EINVAL;
>
> -       if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
> +       if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()
> +               || cpu_is_mx53()) {
>                unsigned long long c;
>                unsigned long period_cycles, duty_cycles, prescale;
>                u32 cr;
> --
> 1.7.4.1
>
>
>
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