Re: [PATCH 2/5] soundwire: qcom: add support for mmio soundwire devices

Vinod Koul
2020-06-09T04:34:26Z

Hi Jonathan,

On 08-06-20, 16:43, Jonathan Marek wrote:
> Adds support for qcom soundwire devices with memory mapped IO registers.

Please use 'SoundWire Master devices' instead :)

>
> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
> drivers/soundwire/qcom.c | 25 +++++++++++++++++++++++--
> 1 file changed, 23 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
> index f38d1fd3679f..628747df1c75 100644
> --- a/drivers/soundwire/qcom.c
> +++ b/drivers/soundwire/qcom.c
> @@ -90,6 +90,7 @@ struct qcom_swrm_ctrl {
> struct sdw_bus bus;
> struct device *dev;
> struct regmap *regmap;
> + void __iomem *mmio;
> struct completion *comp;
> struct work_struct slave_work;
> /* read/write lock */
> @@ -154,6 +155,20 @@ static int qcom_swrm_ahb_reg_write(struct qcom_swrm_ctrl *ctrl,
> return SDW_CMD_OK;
> }
>
> +static int qcom_swrm_cpu_reg_read(struct qcom_swrm_ctrl *ctrl, int reg,
> + u32 *val)
> +{
> + *val = readl(ctrl->mmio + reg);
> + return SDW_CMD_OK;
> +}
> +
> +static int qcom_swrm_cpu_reg_write(struct qcom_swrm_ctrl *ctrl, int reg,
> + int val)
> +{
> + writel(val, ctrl->mmio + reg);
> + return SDW_CMD_OK;
> +}

this looks fine but regmap supports mmio also, so I am thinking we
should remove these and set regmap (mmio/slim)... Srini..?

--
~Vinod