diff options
author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-09-16 11:36:32 +0200 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-07 16:05:04 +0100 |
commit | b41f270841f85b9b4f8530b9f2020ff3ba1cfec5 (patch) | |
tree | 7f488d3ff9f9b3884b222688e8730b2ec32da15d /drivers/media/i2c/ccs | |
parent | 6c7469e46b603f08462ef586a415a318134392b8 (diff) |
media: ccs: Dual PLL support
Add support for sensors that either require dual PLL or support single or
dual PLL but use dual PLL as default.
Use sensor default configuration for sensors that support both modes.
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/i2c/ccs')
-rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index fa878ecf55a7..580166b84878 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -395,7 +395,23 @@ static int ccs_pll_configure(struct ccs_sensor *sensor) if (rval < 0) return rval; - return ccs_write(sensor, OP_SYS_CLK_DIV, pll->op_bk.sys_clk_div); + rval = ccs_write(sensor, OP_SYS_CLK_DIV, pll->op_bk.sys_clk_div); + if (rval < 0) + return rval; + + if (!(pll->flags & CCS_PLL_FLAG_DUAL_PLL)) + return 0; + + rval = ccs_write(sensor, PLL_MODE, CCS_PLL_MODE_DUAL); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, OP_PRE_PLL_CLK_DIV, + pll->op_fr.pre_pll_clk_div); + if (rval < 0) + return rval; + + return ccs_write(sensor, OP_PLL_MULTIPLIER, pll->op_fr.pll_multiplier); } static int ccs_pll_try(struct ccs_sensor *sensor, struct ccs_pll *pll) @@ -412,6 +428,16 @@ static int ccs_pll_try(struct ccs_sensor *sensor, struct ccs_pll *pll) .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_PLL_OP_CLK_FREQ_MHZ), .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_PLL_OP_CLK_FREQ_MHZ), }, + .op_fr = { + .min_pre_pll_clk_div = CCS_LIM(sensor, MIN_OP_PRE_PLL_CLK_DIV), + .max_pre_pll_clk_div = CCS_LIM(sensor, MAX_OP_PRE_PLL_CLK_DIV), + .min_pll_ip_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_IP_CLK_FREQ_MHZ), + .max_pll_ip_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_IP_CLK_FREQ_MHZ), + .min_pll_multiplier = CCS_LIM(sensor, MIN_OP_PLL_MULTIPLIER), + .max_pll_multiplier = CCS_LIM(sensor, MAX_OP_PLL_MULTIPLIER), + .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_OP_CLK_FREQ_MHZ), + .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_OP_CLK_FREQ_MHZ), + }, .op_bk = { .min_sys_clk_div = CCS_LIM(sensor, MIN_OP_SYS_CLK_DIV), .max_sys_clk_div = CCS_LIM(sensor, MAX_OP_SYS_CLK_DIV), @@ -3231,6 +3257,23 @@ static int ccs_probe(struct i2c_client *client) CCS_FIFO_SUPPORT_CAPABILITY_DERATING_OVERRATING) sensor->pll.flags |= CCS_PLL_FLAG_FIFO_DERATING | CCS_PLL_FLAG_FIFO_OVERRATING; + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_DUAL_PLL) { + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_SINGLE_PLL) { + u32 v; + + /* Use sensor default in PLL mode selection */ + rval = ccs_read(sensor, PLL_MODE, &v); + if (rval) + goto out_cleanup; + + if (v == CCS_PLL_MODE_DUAL) + sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL; + } else { + sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL; + } + } sensor->pll.op_bits_per_lane = CCS_LIM(sensor, OP_BITS_PER_LANE); sensor->pll.ext_clk_freq_hz = sensor->hwcfg.ext_clk; sensor->pll.scale_n = CCS_LIM(sensor, SCALER_N_MIN); |