diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-09-23 12:16:03 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-07 15:53:05 +0100 |
| commit | 585e17c98407e1c2ec7735f37379e96cf0f74e3a (patch) | |
| tree | 9647d9d194a8f7e1dedb537f4ece298e4254c332 /drivers/media | |
| parent | cac8f5d28e56c405befd1613fc38c962aaf69f30 (diff) | |
| download | linux-stable-585e17c98407e1c2ec7735f37379e96cf0f74e3a.tar.gz linux-stable-585e17c98407e1c2ec7735f37379e96cf0f74e3a.tar.bz2 linux-stable-585e17c98407e1c2ec7735f37379e96cf0f74e3a.zip | |
media: ccs: Add support for lane speed model
Convey the relevant PLL flags to the PLL calculator. Also the lane speed
model affects how the link rate is calculated on the CSI-2 bus, as the
rate is total of all lanes.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index a422a523057e..a0d73e0fa31a 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -386,7 +386,9 @@ static int ccs_pll_configure(struct ccs_sensor *sensor) /* Lane op clock ratio does not apply here. */ rval = ccs_write(sensor, REQUESTED_LINK_RATE, DIV_ROUND_UP(pll->op_bk.sys_clk_freq_hz, - 1000000 / 256 / 256)); + 1000000 / 256 / 256) * + (pll->flags & CCS_PLL_FLAG_LANE_SPEED_MODEL ? + sensor->pll.csi2.lanes : 1)); if (rval < 0 || sensor->pll.flags & CCS_PLL_FLAG_NO_OP_CLOCKS) return rval; @@ -3202,6 +3204,13 @@ static int ccs_probe(struct i2c_client *client) /* prepare PLL configuration input values */ sensor->pll.bus_type = CCS_PLL_BUS_TYPE_CSI2_DPHY; sensor->pll.csi2.lanes = sensor->hwcfg.lanes; + if (CCS_LIM(sensor, CLOCK_CALCULATION) & + CCS_CLOCK_CALCULATION_LANE_SPEED) { + sensor->pll.vt_lanes = + CCS_LIM(sensor, NUM_OF_VT_LANES) + 1; + sensor->pll.op_lanes = sensor->pll.vt_lanes; + sensor->pll.flags |= CCS_PLL_FLAG_LANE_SPEED_MODEL; + } sensor->pll.ext_clk_freq_hz = sensor->hwcfg.ext_clk; sensor->pll.scale_n = CCS_LIM(sensor, SCALER_N_MIN); |