diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2019-08-06 02:55:11 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-08-21 11:06:01 +0200 |
| commit | 05be59ac41b2b4487170d495f20a411698290607 (patch) | |
| tree | 0c6d12ab3c2d0aa7de52a3d34324eb17d5ad3111 /drivers/soundwire | |
| parent | soundwire: export helpers to find row and column values (diff) | |
| download | linux-05be59ac41b2b4487170d495f20a411698290607.tar.xz linux-05be59ac41b2b4487170d495f20a411698290607.zip | |
soundwire: cadence_master: use firmware defaults for frame shape
Remove hard-coding and use firmware (BIOS/DT) values. If they are
wrong use default 48x2 frame shape.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190806005522.22642-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 89974bbe64c7..7dab1e40382a 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -47,6 +47,8 @@ #define CDNS_MCP_SSPSTAT 0xC #define CDNS_MCP_FRAME_SHAPE 0x10 #define CDNS_MCP_FRAME_SHAPE_INIT 0x14 +#define CDNS_MCP_FRAME_SHAPE_COL_MASK GENMASK(2, 0) +#define CDNS_MCP_FRAME_SHAPE_ROW_OFFSET 3 #define CDNS_MCP_CONFIG_UPDATE 0x18 #define CDNS_MCP_CONFIG_UPDATE_BIT BIT(0) @@ -174,7 +176,6 @@ /* Driver defaults */ #define CDNS_DEFAULT_CLK_DIVIDER 0 -#define CDNS_DEFAULT_FRAME_SHAPE 0x30 #define CDNS_DEFAULT_SSP_INTERVAL 0x18 #define CDNS_TX_TIMEOUT 2000 @@ -807,6 +808,20 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns, } EXPORT_SYMBOL(sdw_cdns_pdi_init); +static u32 cdns_set_initial_frame_shape(int n_rows, int n_cols) +{ + u32 val; + int c; + int r; + + r = sdw_find_row_index(n_rows); + c = sdw_find_col_index(n_cols) & CDNS_MCP_FRAME_SHAPE_COL_MASK; + + val = (r << CDNS_MCP_FRAME_SHAPE_ROW_OFFSET) | c; + + return val; +} + /** * sdw_cdns_init() - Cadence initialization * @cdns: Cadence instance @@ -829,8 +844,13 @@ int sdw_cdns_init(struct sdw_cdns *cdns) val |= CDNS_DEFAULT_CLK_DIVIDER; cdns_writel(cdns, CDNS_MCP_CLK_CTRL0, val); - /* Set the default frame shape */ - cdns_writel(cdns, CDNS_MCP_FRAME_SHAPE_INIT, CDNS_DEFAULT_FRAME_SHAPE); + /* + * Frame shape changes after initialization have to be done + * with the bank switch mechanism + */ + val = cdns_set_initial_frame_shape(prop->default_row, + prop->default_col); + cdns_writel(cdns, CDNS_MCP_FRAME_SHAPE_INIT, val); /* Set SSP interval to default value */ cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, CDNS_DEFAULT_SSP_INTERVAL); |