On Tue, 29 Oct 2024, Shyam Sundar S K wrote:
> To distinguish between the PMC message port and the S2D (Spill to DRAM)
> message port, replace the use of 0 and 1 with an enum.
>
> Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> Co-developed-by: Sanket Goswami <Sanket.Goswami@xxxxxxx>
> Signed-off-by: Sanket Goswami <Sanket.Goswami@xxxxxxx>
> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
> ---
> drivers/platform/x86/amd/pmc/mp1_stb.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/platform/x86/amd/pmc/mp1_stb.c b/drivers/platform/x86/amd/pmc/mp1_stb.c
> index 5efec020ecac..2b06861c479b 100644
> --- a/drivers/platform/x86/amd/pmc/mp1_stb.c
> +++ b/drivers/platform/x86/amd/pmc/mp1_stb.c
> @@ -47,6 +47,11 @@ enum s2d_arg {
> S2D_DRAM_SIZE,
> };
>
> +enum s2d_msg_port {
> + MSG_PORT_PMC,
> + MSG_PORT_S2D,
> +};
> +
> struct amd_stb_v2_data {
> size_t size;
> u8 data[] __counted_by(size);
> @@ -156,7 +161,7 @@ static int amd_stb_debugfs_open_v2(struct inode *inode, struct file *filp)
> dev_err(dev->dev, "error writing to STB: %d\n", ret);
>
> /* Spill to DRAM num_samples uses separate SMU message port */
> - dev->msg_port = 1;
> + dev->msg_port = MSG_PORT_S2D;
>
> ret = amd_pmc_send_cmd(dev, 0, &val, STB_FORCE_FLUSH_DATA, 1);
> if (ret)
> @@ -173,7 +178,7 @@ static int amd_stb_debugfs_open_v2(struct inode *inode, struct file *filp)
> /* Get the num_samples to calculate the last push location */
> ret = amd_pmc_send_cmd(dev, S2D_NUM_SAMPLES, &num_samples, dev->s2d_msg_id, true);
> /* Clear msg_port for other SMU operation */
> - dev->msg_port = 0;
> + dev->msg_port = MSG_PORT_PMC;
> if (ret) {
> dev_err(dev->dev, "error: S2D_NUM_SAMPLES not supported : %d\n", ret);
> return ret;
> @@ -266,7 +271,7 @@ int amd_s2d_init(struct amd_pmc_dev *dev)
> &amd_stb_debugfs_fops);
>
> /* Spill to DRAM feature uses separate SMU message port */
> - dev->msg_port = 1;
> + dev->msg_port = MSG_PORT_S2D;
>
> amd_pmc_send_cmd(dev, S2D_TELEMETRY_SIZE, &size, dev->s2d_msg_id, true);
> if (size != S2D_TELEMETRY_BYTES_MAX)
> @@ -284,7 +289,7 @@ int amd_s2d_init(struct amd_pmc_dev *dev)
> stb_phys_addr = ((u64)phys_addr_hi << 32 | phys_addr_low);
>
> /* Clear msg_port for other SMU operation */
> - dev->msg_port = 0;
> + dev->msg_port = MSG_PORT_PMC;
>
> dev->stb_virt_addr = devm_ioremap(dev->dev, stb_phys_addr, dev->dram_size);
> if (!dev->stb_virt_addr)
This change is incomplete, you missed all places using it:
if (dev->msg_port) {
+ add helper for this:
dev->msg_port ? "S2D" : "PMC"
--
i.
