[RFC PATCH 24/40] soundwire: cadence_master: use BIOS defaults for frame shape

Pierre-Louis Bossart
2019-07-25T23:42:57Z

Remove hard-coding and use BIOS values. If they are wrong use default
48x2 frame shape.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
drivers/soundwire/cadence_master.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 442f78c00f09..d84344e29f71 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -175,7 +175,6 @@
/* 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

@@ -954,6 +953,20 @@ int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
}
EXPORT_SYMBOL(sdw_cdns_pdi_init);

+static u32 cdns_set_default_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);
+
+ val = (r << 3) | c;
+
+ return val;
+}
+
/**
* sdw_cdns_init() - Cadence initialization
* @cdns: Cadence instance
@@ -977,7 +990,9 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
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);
+ val = cdns_set_default_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);
--
2.20.1