On 04/22/2019 06:32 AM, Mason Yang wrote:
> Add a driver for Renesas R-Car Gen3 RPC-IF SPI controller.
>
> Signed-off-by: Mason Yang <masonccyang@xxxxxxxxxxx>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
[...]
Do dote that I'm opposed to the driver separation as it's presented in
this patches, and I have a large patch reworking both MFD and SPI drivers
in the works.
> diff --git a/drivers/spi/spi-renesas-rpc.c b/drivers/spi/spi-renesas-rpc.c
> new file mode 100644
> index 0000000..634222d
> --- /dev/null
> +++ b/drivers/spi/spi-renesas-rpc.c
> @@ -0,0 +1,571 @@
[...]
> +static int rpc_spi_probe(struct platform_device *pdev)
> +{
> + struct spi_controller *ctlr;
> + struct rpc_mfd *rpc_mfd = dev_get_drvdata(pdev->dev.parent);
> + struct rpc_spi *rpc;
> + int ret;
> +
> + ctlr = spi_alloc_master(&pdev->dev, sizeof(*rpc));
> + if (!ctlr)
> + return -ENOMEM;
> +
> + platform_set_drvdata(pdev, ctlr);
> +
> + rpc = spi_controller_get_devdata(ctlr);
> +
> + rpc->mfd = rpc_mfd;
> + ctlr->dev.of_node = pdev->dev.parent->of_node;
> +
> + pm_runtime_enable(&pdev->dev);
> + ctlr->auto_runtime_pm = true;
> +
> + ctlr->num_chipselect = 1;
> + ctlr->mem_ops = &rpc_spi_mem_ops;
> + ctlr->transfer_one_message = rpc_spi_transfer_one_message;
> +
> + ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
> + ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_TX_QUAD | SPI_RX_QUAD;
> +
> + pm_runtime_get_sync(&pdev->dev);
> + rpc_spi_hw_init(rpc);
> + pm_runtime_put(&pdev->dev);
> +
> + ret = spi_register_controller(ctlr);
> + if (ret) {
> + dev_err(&pdev->dev, "spi_register_controller failed\n");
> + goto err_put_ctlr;
> + }
> +
> + return 0;
Previous formatting was better, shouldn't have moved the empty line above
*return*...
> +err_put_ctlr:
> + spi_controller_put(ctlr);
> + pm_runtime_disable(&pdev->dev);
> +
> + return ret;
> +}
[...]
MBR, Sergei
