On Thursday 29 November 2012 05:35 PM, Tomi Valkeinen wrote:
> On 2012-11-28 12:41, Chandrabhanu Mahapatra wrote:
>> The register fields in dss_reg_fields specific to DISPC are moved from struct
>> omap_dss_features to corresponding dispc_reg_fields, initialized in struct
>> dispc_features, thereby enabling local access.
>>
>> Signed-off-by: Chandrabhanu Mahapatra <cmahapa...@ti.com>
>> ---
>> drivers/video/omap2/dss/dispc.c | 87
>> ++++++++++++++++++++++++++++----
>> drivers/video/omap2/dss/dss.h | 4 ++
>> drivers/video/omap2/dss/dss_features.c | 28 ----------
>> drivers/video/omap2/dss/dss_features.h | 7 ---
>> 4 files changed, 80 insertions(+), 46 deletions(-)
>>
>> diff --git a/drivers/video/omap2/dss/dispc.c
>> b/drivers/video/omap2/dss/dispc.c
>> index 9f259ba..21fc522 100644
>> --- a/drivers/video/omap2/dss/dispc.c
>> +++ b/drivers/video/omap2/dss/dispc.c
>> @@ -80,6 +80,16 @@ struct dispc_irq_stats {
>> unsigned irqs[32];
>> };
>>
>> +enum dispc_feat_reg_field {
>> + FEAT_REG_FIRHINC,
>> + FEAT_REG_FIRVINC,
>> + FEAT_REG_FIFOLOWTHRESHOLD,
>> + FEAT_REG_FIFOHIGHTHRESHOLD,
>> + FEAT_REG_FIFOSIZE,
>> + FEAT_REG_HORIZONTALACCU,
>> + FEAT_REG_VERTICALACCU,
>> +};
>> +
>> struct dispc_features {
>> u8 sw_start;
>> u8 fp_start;
>> @@ -107,6 +117,8 @@ struct dispc_features {
>>
>> u32 buffer_size_unit;
>> u32 burst_size_unit;
>> +
>> + struct register_field *reg_fields;
>> };
>>
>> #define DISPC_MAX_NR_FIFOS 5
>> @@ -1150,7 +1162,8 @@ static void dispc_init_fifos(void)
>>
>> unit = dispc.feat->buffer_size_unit;
>>
>> - dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
>> + start = dispc.feat->reg_fields[FEAT_REG_FIFOSIZE].start;
>> + end = dispc.feat->reg_fields[FEAT_REG_FIFOSIZE].end;
>>
>> for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
>> size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end);
>> @@ -1214,8 +1227,10 @@ void dispc_ovl_set_fifo_threshold(enum omap_plane
>> plane, u32 low, u32 high)
>> low /= unit;
>> high /= unit;
>>
>> - dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
>> - dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
>> + hi_start = dispc.feat->reg_fields[FEAT_REG_FIFOHIGHTHRESHOLD].start;
>> + hi_end = dispc.feat->reg_fields[FEAT_REG_FIFOHIGHTHRESHOLD].end;
>> + lo_start = dispc.feat->reg_fields[FEAT_REG_FIFOLOWTHRESHOLD].start;
>> + lo_end = dispc.feat->reg_fields[FEAT_REG_FIFOLOWTHRESHOLD].end;
>
> I think these are quite verbose. Perhaps a helper function which does
> the same as dss_feat_get_reg_field() would be better. Or alternatively,
> maybe something like:
>
> const struct dss_reg_field *hi_field =
> &dispc.feat->reg_fields[FEAT_REG_FIFOHIGHTHRESHOLD];
>
> and then use "hi_field.start" instead of hi_start.
>
> Or something else that makes the above easier to read.
OK.
>
>> diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
>> index 84a7f6a..aa273d8 100644
>> --- a/drivers/video/omap2/dss/dss.h
>> +++ b/drivers/video/omap2/dss/dss.h
>> @@ -143,6 +143,10 @@ struct reg_field {
>> u8 low;
>> };
>>
>> +struct register_field {
>> + u8 start, end;
>> +};
>> +
>
> We already have the dss_reg_field struct. I think it's better to move
> that to dss.h, and use it, instead of creating an exact duplicate.
>
> Tomi
>
>
register_field appears to be a more generic a name rather than
dss_reg_field. Also I was thinking to initialise
struct dispc_reg_fields {
struct register_field firhinc;
struct register_field firvinc;
struct register_field fifo_low_threshold;
...
};
similarly, dss_reg_fields and dsi_reg_fields from register_field.
--
Chandrabhanu Mahapatra
Texas Instruments India Pvt. Ltd.
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