diff options
Diffstat (limited to 'sound/soc/intel/common/sst-dsp.c')
| -rw-r--r-- | sound/soc/intel/common/sst-dsp.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sound/soc/intel/common/sst-dsp.c b/sound/soc/intel/common/sst-dsp.c index 64e94212d2d2..a627236dd1f5 100644 --- a/sound/soc/intel/common/sst-dsp.c +++ b/sound/soc/intel/common/sst-dsp.c @@ -20,6 +20,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/io.h> +#include <linux/delay.h> #include "sst-dsp.h" #include "sst-dsp-priv.h" @@ -196,6 +197,22 @@ int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset, } EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked); +/* This is for registers bits with attribute RWC */ +void sst_dsp_shim_update_bits_forced_unlocked(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value) +{ + unsigned int old, new; + u32 ret; + + ret = sst_dsp_shim_read_unlocked(sst, offset); + + old = ret; + new = (old & (~mask)) | (value & mask); + + sst_dsp_shim_write_unlocked(sst, offset, new); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_forced_unlocked); + int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset, u32 mask, u32 value) { @@ -222,6 +239,60 @@ int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset, } EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64); +/* This is for registers bits with attribute RWC */ +void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value) +{ + unsigned long flags; + + spin_lock_irqsave(&sst->spinlock, flags); + sst_dsp_shim_update_bits_forced_unlocked(sst, offset, mask, value); + spin_unlock_irqrestore(&sst->spinlock, flags); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_forced); + +int sst_dsp_register_poll(struct sst_dsp *ctx, u32 offset, u32 mask, + u32 target, u32 timeout, char *operation) +{ + int time, ret; + u32 reg; + bool done = false; + + /* + * we will poll for couple of ms using mdelay, if not successful + * then go to longer sleep using usleep_range + */ + + /* check if set state successful */ + for (time = 0; time < 5; time++) { + if ((sst_dsp_shim_read_unlocked(ctx, offset) & mask) == target) { + done = true; + break; + } + mdelay(1); + } + + if (done == false) { + /* sleeping in 10ms steps so adjust timeout value */ + timeout /= 10; + + for (time = 0; time < timeout; time++) { + if ((sst_dsp_shim_read_unlocked(ctx, offset) & mask) == target) + break; + + usleep_range(5000, 10000); + } + } + + reg = sst_dsp_shim_read_unlocked(ctx, offset); + dev_info(ctx->dev, "FW Poll Status: reg=%#x %s %s\n", reg, operation, + (time < timeout) ? "successful" : "timedout"); + ret = time < timeout ? 0 : -ETIME; + + return ret; +} +EXPORT_SYMBOL_GPL(sst_dsp_register_poll); + void sst_dsp_dump(struct sst_dsp *sst) { if (sst->ops->dump) |