Hello,
I have only one question...
On Saturday 02 October 2010 00:35:32 ext Paul Walmsley wrote:
...
> +/* McBSP CLKS source switching function */
> +
> +int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id)
> +{
> + struct omap_mcbsp *mcbsp;
> + struct clk *fck_src;
> + char *fck_src_name;
> + int r;
> +
> + if (!omap_mcbsp_check_valid_id(id)) {
> + pr_err("%s: Invalid id (%d)\n", __func__, id + 1);
> + return -EINVAL;
> + }
> + mcbsp = id_to_mcbsp_ptr(id);
> +
> + if (fck_src_id == MCBSP_CLKS_PAD_SRC)
> + fck_src_name = "pad_fck";
> + else if (fck_src_id == MCBSP_CLKS_PRCM_SRC)
> + fck_src_name = "prcm_fck";
> + else
> + return -EINVAL;
> +
> + fck_src = clk_get(mcbsp->dev, fck_src_name);
> + if (IS_ERR_OR_NULL(fck_src)) {
> + pr_err("omap-mcbsp: %s: could not clk_get() %s\n", "clks",
> + fck_src_name);
> + return -EINVAL;
> + }
> +
> + clk_disable(mcbsp->fclk);
> +
> + r = clk_set_parent(mcbsp->fclk, fck_src);
> + if (IS_ERR_VALUE(r)) {
> + pr_err("omap-mcbsp: %s: could not clk_set_parent() to %s\n",
> + "clks", fck_src_name);
> + clk_put(fck_src);
> + return -EINVAL;
> + }
> +
> + clk_enable(mcbsp->fclk);
> +
> + clk_put(fck_src);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(omap2_mcbsp_set_clks_src);
...
> static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
> int clk_id, unsigned int freq,
> int dir)
> {
> struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
> struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
> - struct omap_mcbsp_platform_data *pdata = cpu_dai->dev->platform_data;
> int err = 0;
>
> /* The McBSP signal muxing functions are only available on McBSP1 */
> @@ -685,8 +630,20 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct
> snd_soc_dai *cpu_dai, regs->srgr2 |= CLKSM;
> break;
> case OMAP_MCBSP_SYSCLK_CLKS_FCLK:
> + if (cpu_class_is_omap1()) {
> + err = -EINVAL;
> + break;
> + }
> + err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id,
> + MCBSP_CLKS_PRCM_SRC);
> + break;
> case OMAP_MCBSP_SYSCLK_CLKS_EXT:
> - err = omap_mcbsp_dai_set_clks_src(mcbsp_data, clk_id);
> + if (cpu_class_is_omap1()) {
> + err = 0;
> + break;
> + }
> + err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id,
> + MCBSP_CLKS_PAD_SRC);
> break;
>
> case OMAP_MCBSP_SYSCLK_CLKX_EXT:
What is the fclk source by default.
What I mean is that most of the machine drivers are not calling the
snd_soc_dai_set_sysclk for the cpu_dai.
It has been by default to prcm_fclk (core_96 or per_96).
Is this still the case after this series?
Do we need to go through the ASoC machine drivers, and need to select
explicitly
the prcm_fclk from now on?
--
Péter
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