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SubjectRe: [PATCH v1 09/10] staging: dsp: add support for Fortemedia FM34NE DSP
On Tue, Feb 21, 2023 at 08:32:10PM +0200, Svyatoslav Ryhel wrote:
> +static int fm34ne_dsp_set_config(struct fm34ne_dsp_data *fm34, int state)
> +{
> + struct device *dev = &fm34->client->dev;
> +
> + const u8 *enable_ns_parameter = fm34->data->enable_noise_suppression;
> + int enable_ns_length = fm34->data->enable_ns_length;
> +
> + const u8 *disable_ns_parameter = fm34->data->disable_noise_suppression;
> + int disable_ns_length = fm34->data->disable_ns_length;
> +
> + int ret;
> +
> + gpiod_set_value_cansleep(fm34->bypass_gpio, 1);
> + msleep(20);
> +
> + switch (state) {
> + case FM34NE_NS_ENABLE:
> + ret = fm34ne_dsp_write_config(fm34->client, enable_parameter,
> + sizeof(enable_parameter));
> + if (ret < 0) {
> + dev_err(dev, "failed to set DSP enable with %d\n", ret);
> + goto exit;
> + }
> +
> + ret = fm34ne_dsp_write_config(fm34->client, enable_ns_parameter,
> + enable_ns_length);
> + if (ret < 0) {
> + dev_err(dev, "failed to enable DSP noise suppression with %d\n", ret);
> + goto exit;
> + }
> +
> + dev_info(dev, "noise suppression enable DSP parameter written\n");

Delete this type of debug code.

> + break;
> +
> + case FM34NE_NS_DISABLE:
> + ret = fm34ne_dsp_write_config(fm34->client, enable_parameter,
> + sizeof(enable_parameter));
> + if (ret < 0) {
> + dev_err(dev, "failed to set DSP enable with %d\n", ret);
> + goto exit;
> + }
> +
> + ret = fm34ne_dsp_write_config(fm34->client, disable_ns_parameter,
> + disable_ns_length);
> + if (ret < 0) {
> + dev_err(dev, "failed to disable DSP noise suppression with %d\n", ret);
> + goto exit;
> + }
> +
> + dev_info(dev, "noise suppression disable DSP parameter written\n");

Same etc.

> + break;
> +
> + case FM34NE_BYPASS:
> + default:
> + ret = fm34ne_dsp_write_config(fm34->client, bypass_parameter,
> + sizeof(bypass_parameter));
> + if (ret < 0) {
> + dev_err(dev, "failed to set DSP bypass with %d\n", ret);
> + goto exit;
> + }
> +
> + dev_info(dev, "bypass DSP parameter written\n");
> + break;
> + }
> +
> +exit:
> + gpiod_set_value_cansleep(fm34->bypass_gpio, 0);
> +
> + return ret;
> +}
> +
> +static int fm34ne_dsp_set_hw(struct fm34ne_dsp_data *fm34)
> +{
> + struct device *dev = &fm34->client->dev;
> + int ret;
> +
> + ret = clk_prepare_enable(fm34->dap_mclk);
> + if (ret) {
> + dev_err(dev, "failed to enable the DSP MCLK: %d\n", ret);
> + return ret;
> + }
> +
> + ret = regulator_enable(fm34->vdd_supply);
> + if (ret < 0) {
> + dev_err(dev, "failed to enable vdd power supply\n");

clk_disable_unprepare(fm34->dap_mclk);

> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static void fm34ne_dsp_reset(struct fm34ne_dsp_data *fm34)
> +{
> + gpiod_set_value_cansleep(fm34->reset_gpio, 1);
> + msleep(20);
> +
> + gpiod_set_value_cansleep(fm34->reset_gpio, 0);
> + msleep(100);
> +}
> +
> +static int fm34ne_dsp_init_chip(struct fm34ne_dsp_data *fm34)
> +{
> + const u8 *input_parameter = fm34->data->input_parameter;
> + int input_parameter_length = fm34->data->input_parameter_length;
> + int ret;
> +
> + ret = fm34ne_dsp_set_hw(fm34);
> + if (ret)
> + return ret;
> +
> + fm34ne_dsp_reset(fm34);
> +
> + gpiod_set_value_cansleep(fm34->bypass_gpio, 1);
> + msleep(20);
> +
> + ret = i2c_smbus_write_byte(fm34->client, FM34NE_I2C_CHECK);
> + if (ret < 0) {
> + dev_info(&fm34->client->dev, "initial write failed\n");

dev_warn()?

> + msleep(50);
> +
> + fm34ne_dsp_reset(fm34);
> + gpiod_set_value_cansleep(fm34->bypass_gpio, 0);
> +
> + return ret;
> + }
> +
> + ret = fm34ne_dsp_write_config(fm34->client, input_parameter,
> + input_parameter_length);
> + if (ret < 0)
> + return -EINVAL;

Why not propagate the error code from fm34ne_dsp_write_config()?

> +
> + msleep(100);
> + gpiod_set_value_cansleep(fm34->bypass_gpio, 0);
> +
> + dev_info(&fm34->client->dev, "%s detected\n", fm34->data->model);
> +
> + /* Constantly set DSP to bypass mode for now */
> + ret = fm34ne_dsp_set_config(fm34, FM34NE_BYPASS);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}

regards,
dan carpenter

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