[RFC 3/5] ipmi:bt-bmc: Put arch specific function into bt_bmc_ops

[Cédric Le Goater]

On 10/6/21 04:12, Anton Blanchard wrote:
> While most of the driver is arch agnostic, setting up and handling
> interrupts, and enabling the hardware is not. Create bt_bmc_ops to
> handle these functions.
> 
> Signed-off-by: Anton Blanchard <anton at ozlabs.org>

See comment on patch 5. Any how,

Reviewed-by: Cédric Le Goater <clg at kaod.org>

Thanks

C.

> ---
>   drivers/char/ipmi/bt-bmc.c | 24 ++++++++++++++++++++----
>   1 file changed, 20 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/char/ipmi/bt-bmc.c b/drivers/char/ipmi/bt-bmc.c
> index 2b0fe1255026..b48e04405ac4 100644
> --- a/drivers/char/ipmi/bt-bmc.c
> +++ b/drivers/char/ipmi/bt-bmc.c
> @@ -17,6 +17,7 @@
>   #include <linux/regmap.h>
>   #include <linux/sched.h>
>   #include <linux/timer.h>
> +#include <linux/of_device.h>
>   
>   /*
>    * This is a BMC device used to communicate to the host
> @@ -435,15 +436,30 @@ static void aspeed_enable_bt(struct bt_bmc *bt_bmc)
>   		     BT_CR0_ENABLE_IBT);
>   }
>   
> +struct bt_bmc_ops {
> +	int (*config_irq)(struct bt_bmc *bt_bmc, struct platform_device *pdev);
> +	void (*enable_bt)(struct bt_bmc *bt_bmc);
> +};
> +
> +static const struct bt_bmc_ops aspeed_bt_bmc_ops = {
> +	.config_irq = aspeed_bt_bmc_config_irq,
> +	.enable_bt = aspeed_enable_bt,
> +};
> +
>   static int bt_bmc_probe(struct platform_device *pdev)
>   {
>   	struct bt_bmc *bt_bmc;
>   	struct device *dev;
>   	int rc;
> +	const struct bt_bmc_ops *ops;
>   
>   	dev = &pdev->dev;
>   	dev_info(dev, "Found bt bmc device\n");
>   
> +	ops = of_device_get_match_data(&pdev->dev);
> +	if (!ops)
> +		return -ENODEV;
> +
>   	bt_bmc = devm_kzalloc(dev, sizeof(*bt_bmc), GFP_KERNEL);
>   	if (!bt_bmc)
>   		return -ENOMEM;
> @@ -483,7 +499,7 @@ static int bt_bmc_probe(struct platform_device *pdev)
>   		return rc;
>   	}
>   
> -	aspeed_bt_bmc_config_irq(bt_bmc, pdev);
> +	ops->config_irq(bt_bmc, pdev);
>   
>   	if (bt_bmc->irq >= 0) {
>   		dev_info(dev, "Using IRQ %d\n", bt_bmc->irq);
> @@ -494,7 +510,7 @@ static int bt_bmc_probe(struct platform_device *pdev)
>   		add_timer(&bt_bmc->poll_timer);
>   	}
>   
> -	aspeed_enable_bt(bt_bmc);
> +	ops->enable_bt(bt_bmc);
>   
>   	clr_b_busy(bt_bmc);
>   
> @@ -512,8 +528,8 @@ static int bt_bmc_remove(struct platform_device *pdev)
>   }
>   
>   static const struct of_device_id bt_bmc_match[] = {
> -	{ .compatible = "aspeed,ast2400-ibt-bmc" },
> -	{ .compatible = "aspeed,ast2500-ibt-bmc" },
> +	{ .compatible = "aspeed,ast2400-ibt-bmc", .data = &aspeed_bt_bmc_ops },
> +	{ .compatible = "aspeed,ast2500-ibt-bmc", .data = &aspeed_bt_bmc_ops },
>   	{ },
>   };
>   
>