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Loopback mode kcontrol support - #26
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Add a status to track dai ssp lbm. Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
get loopback mode status for dai. Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Return error value if it is called. Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Add ssp_get_loopback_mode and refine ssp_set_loopback_mode function to support SSP loopback mode. Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
use dai_cmd to handle ssp dai loopback mode switch support Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
lgirdwood
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Just minor optimizations needed.
| uint32_t psp; | ||
| spinlock_t lock; | ||
| uint32_t state[2]; /* SSP_STATE_ for each direction */ | ||
| uint32_t lbm; |
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This is platform data, so it cant hold any "status". It can however store a flag that can be used to do a one time configure of the SSP hardware. Please also use a more descriptive name for this, what does it do ?
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Will use register value.
| int (*pm_context_store)(struct dai *dai); | ||
| int (*probe)(struct dai *dai); | ||
| int (*set_loopback_mode)(struct dai *dai, uint32_t lbm); | ||
| int (*get_loopback_mode)(struct dai *dai); |
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Please remove set_loopback_mode and use an int (*ioctl)(*dai, int cmd, void *data) callback for this.
| return -EINVAL; | ||
| } | ||
| static inline int dmic_get_loopback_mode(struct dai *dai) |
| trace_ssp("log"); | ||
| spin_lock(&ssp->lock); | ||
| ret = ssp->lbm; |
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Do we really need this variable to track state ? cant we just use the SSP LBM bit for this ?
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ok, will use the register value directly,
| case SOF_CTRL_CMD_SWITCH: | ||
| val = cdata->compv[0].uvalue; | ||
| trace_dai("dcs"); | ||
| trace_value(cdata->comp_id); |
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This will flow easier when using ioctl as the cmd can be passed directly in most cases.
Add comp cmd handler for DAI SSP loopback mode switch.
work with:
thesofproject/linux#10
thesofproject/soft#13