On Fri 23 Jun 09:15 PDT 2017, Georgi Djakov wrote:
> +static int msm8916_register_clk(struct device *dev, void __iomem *base)
> +{
[..]
> + regmap = devm_regmap_init_mmio(dev, base, &a53cc_regmap_config);
> + if (IS_ERR(regmap)) {
> + ret = PTR_ERR(regmap);
> + dev_err(dev, "failed to init regmap mmio: %d\n", ret);
> + goto err;
> + }
I think it would be cleaner if you create the regmap in probe() and we
use that throughout the driver - rather than using two different access
mechanism.
> +
> + a53cc->clkr.regmap = regmap;
> +
> + ret = devm_clk_register_regmap(dev, &a53cc->clkr);
> + if (ret) {
> + dev_err(dev, "failed to register regmap clock: %d\n", ret);
> + goto err;
> + }
> +
> + ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_simple_get,
> + &a53cc->clkr.hw);
> + if (ret) {
> + dev_err(dev, "failed to add clock provider: %d\n", ret);
> + goto err;
> + }
> +
> + return 0;
> +
> +err:
> + clk_notifier_unregister(pclk, &a53cc->clk_nb);
> + return ret;
> +}
> +
> static int qcom_apcs_ipc_probe(struct platform_device *pdev)
> {
> + struct device_node *np = pdev->dev.of_node;
> struct qcom_apcs_ipc *apcs;
> struct resource *res;
> unsigned long offset;
> @@ -63,6 +178,13 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
> if (IS_ERR(base))
> return PTR_ERR(base);
>
> + if (of_device_is_compatible(np, "qcom,msm8916-apcs-kpss-global")) {
> + /* register the APCS mux and divider clock */
> + ret = msm8916_register_clk(&pdev->dev, base);
> + if (ret)
> + return ret;
> + }
> +
Don't you need to clean up anything in the below error path and in
remove()?
> offset = (unsigned long)of_device_get_match_data(&pdev->dev);
>
> apcs->reg = base + offset;
Other than that I think this looks reasonable.
Regards,
Bjorn
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