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drm/bridge: tc358767: Add precious register SYSSTAT

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This is the single register which clears its value upon read operation.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231212075257.75084-7-alexander.stein@ew.tq-group.com
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Alexander Stein 2023-12-12 08:52:56 +01:00 committed by Robert Foss
parent ef34c0eb0b
commit 230dae78d6
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1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/bridge/tc358767.c
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@ -2070,6 +2070,15 @@ static const struct regmap_access_table tc_volatile_table = {
.n_yes_ranges = ARRAY_SIZE(tc_volatile_ranges),
};
static const struct regmap_range tc_precious_ranges[] = {
regmap_reg_range(SYSSTAT, SYSSTAT),
};
static const struct regmap_access_table tc_precious_table = {
.yes_ranges = tc_precious_ranges,
.n_yes_ranges = ARRAY_SIZE(tc_precious_ranges),
};
static const struct regmap_range tc_non_writeable_ranges[] = {
regmap_reg_range(PPI_BUSYPPI, PPI_BUSYPPI),
regmap_reg_range(DSI_BUSYDSI, DSI_BUSYDSI),
@ -2093,6 +2102,7 @@ static const struct regmap_config tc_regmap_config = {
.cache_type = REGCACHE_MAPLE,
.readable_reg = tc_readable_reg,
.volatile_table = &tc_volatile_table,
.precious_table = &tc_precious_table,
.wr_table = &tc_writeable_table,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_LITTLE,