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SubjectRe: [PATCH v3 1/4] edac: synps: Add platform specific structures for ddrc controller
On Thu, Aug 02, 2018 at 06:21:19PM +0530, Manish Narani wrote:
> This patch adds platform specific structures, so that we can add

"This patch" in a commit message is tautologically redundant.

> different IP support later using quirks.
>
> Signed-off-by: Manish Narani <manish.narani@xilinx.com>
> ---
> drivers/edac/synopsys_edac.c | 64 ++++++++++++++++++++++++++++++++++++--------
> 1 file changed, 53 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
> index 0c9c59e..d4798e8 100644
> --- a/drivers/edac/synopsys_edac.c
> +++ b/drivers/edac/synopsys_edac.c
> @@ -22,6 +22,7 @@
> #include <linux/edac.h>
> #include <linux/module.h>
> #include <linux/platform_device.h>
> +#include <linux/of.h>
>
> #include "edac_module.h"
>
> @@ -130,6 +131,7 @@ struct synps_ecc_status {
> * @baseaddr: Base address of the DDR controller
> * @message: Buffer for framing the event specific info
> * @stat: ECC status information
> + * @p_data: Pointer to platform data
> * @ce_cnt: Correctable Error count
> * @ue_cnt: Uncorrectable Error count
> */
> @@ -137,11 +139,29 @@ struct synps_edac_priv {
> void __iomem *baseaddr;
> char message[SYNPS_EDAC_MSG_SIZE];
> struct synps_ecc_status stat;
> + const struct synps_platform_data *p_data;
> u32 ce_cnt;
> u32 ue_cnt;
> };
>
> /**
> + * struct synps_platform_data - synps platform data structure
> + * @synps_edac_geterror_info: function pointer to synps edac error info
> + * @synps_edac_get_mtype: function pointer to synps edac mtype
> + * @synps_edac_get_dtype: function pointer to synps edac dtype
> + * @synps_edac_get_eccstate: function pointer to synps edac eccstate
> + * @quirks: to differentiate IPs
> + */
> +struct synps_platform_data {
> + int (*synps_edac_geterror_info)(void __iomem *base,
> + struct synps_ecc_status *p);
> + enum mem_type (*synps_edac_get_mtype)(const void __iomem *base);
> + enum dev_type (*synps_edac_get_dtype)(const void __iomem *base);
> + bool (*synps_edac_get_eccstate)(void __iomem *base);
> + int quirks;
> +};
> +
> +/**
> * synps_edac_geterror_info - Get the current ecc error info
> * @base: Pointer to the base address of the ddr memory controller
> * @p: Pointer to the synopsys ecc status structure
> @@ -242,7 +262,8 @@ static void synps_edac_check(struct mem_ctl_info *mci)
> struct synps_edac_priv *priv = mci->pvt_info;
> int status;
>
> - status = synps_edac_geterror_info(priv->baseaddr, &priv->stat);
> + status = priv->p_data->synps_edac_geterror_info(priv->baseaddr,
> + &priv->stat);

Unnecessarily long line - shortening by renaming might help.

> if (status)
> return;
>
> @@ -372,10 +393,12 @@ static int synps_edac_init_csrows(struct mem_ctl_info *mci)
> for (j = 0; j < csi->nr_channels; j++) {
> dimm = csi->channels[j]->dimm;
> dimm->edac_mode = EDAC_FLAG_SECDED;
> - dimm->mtype = synps_edac_get_mtype(priv->baseaddr);
> + dimm->mtype = priv->p_data->synps_edac_get_mtype(
> + priv->baseaddr);

Ditto - that trailing opening brace at the end is just yucky. Shorten it
and let is stick out even if it longer than 80 cols.

> dimm->nr_pages = (size >> PAGE_SHIFT) / csi->nr_channels;
> dimm->grain = SYNPS_EDAC_ERR_GRAIN;
> - dimm->dtype = synps_edac_get_dtype(priv->baseaddr);
> + dimm->dtype = priv->p_data->synps_edac_get_dtype(
> + priv->baseaddr);
> }
> }
>
> @@ -423,6 +446,21 @@ static int synps_edac_mc_init(struct mem_ctl_info *mci,
> return status;
> }
>
> +static const struct synps_platform_data zynq_edac_def = {
> + .synps_edac_geterror_info = synps_edac_geterror_info,
> + .synps_edac_get_mtype = synps_edac_get_mtype,
> + .synps_edac_get_dtype = synps_edac_get_dtype,
> + .synps_edac_get_eccstate = synps_edac_get_eccstate,
> + .quirks = 0,

Drop the "synps_" prefix from the function pointer names and leave them
in the actual function names so that when one looks at the code, knows
what is what.

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.
--

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