[patch 1/1] mx51: add support for pwm

[Jason Liu]

Hi, Arnaud,

2011/1/7 Arnaud Patard <arnaud.patard at rtp-net.org>:
> This patch is adding support for pwm1 and pwm2 devices found
> on mx51.
> [ this patch has been tested with pwm-backlight driver ]
>
> Signed-off-by: Arnaud Patard <arnaud.patard at rtp-net.org>
> Index: linux-2.6-submit/arch/arm/mach-mx5/clock-mx51-mx53.c
> ===================================================================
> --- linux-2.6-submit.orig/arch/arm/mach-mx5/clock-mx51-mx53.c   2011-01-04 11:36:15.000000000 +0100
> +++ linux-2.6-submit/arch/arm/mach-mx5/clock-mx51-mx53.c        2011-01-04 11:39:55.000000000 +0100
> @@ -1206,6 +1206,11 @@
>  DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
>        NULL,  NULL, &ipg_clk, &gpt_ipg_clk);
>
> +DEFINE_CLOCK(pwm1_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG6_OFFSET,
> +       NULL, NULL, &ipg_clk, NULL);
> +DEFINE_CLOCK(pwm2_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG8_OFFSET,
> +       NULL, NULL, &ipg_clk, NULL);
> +
>  /* I2C */
>  DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET,
>        NULL, NULL, &ipg_clk, NULL);
> @@ -1298,6 +1303,8 @@
>        _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
>        _REGISTER_CLOCK(NULL, "gpt", gpt_clk)
>        _REGISTER_CLOCK("fec.0", NULL, fec_clk)
> +       _REGISTER_CLOCK("mxc_pwm.0", "pwm", pwm1_clk)
> +       _REGISTER_CLOCK("mxc_pwm.1", "pwm", pwm2_clk)
>        _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk)
>        _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk)
>        _REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk)
> Index: linux-2.6-submit/arch/arm/mach-mx5/devices.c
> ===================================================================
> --- linux-2.6-submit.orig/arch/arm/mach-mx5/devices.c   2011-01-04 11:11:43.000000000 +0100
> +++ linux-2.6-submit/arch/arm/mach-mx5/devices.c        2011-01-04 11:39:55.000000000 +0100
> @@ -120,6 +120,44 @@
>        },
>  };
[...]
> +struct platform_device mxc_pwm2_device = {
> +       .name = "mxc_pwm",
> +       .id = 1,
> +       .num_resources = ARRAY_SIZE(pwm2_resources),
> +       .resource = pwm2_resources,
> +};
> +

Why not follow the arch/arm/plat-mxc/devices/platform-imx-xxx to add
devices support?
I saw that some devices was added in arch/arm/mach-mx5/devices.c, but
most are in
 arch/arm/plat-mxc/devices/xx, what's the rule for it when we add
device support?

[...]
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