diff options
author | Takashi Iwai <tiwai@suse.de> | 2017-02-20 21:43:40 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2017-02-20 21:43:40 +0100 |
commit | 4e25d30c8ddeae6ad0b68440aacadaacb14f8538 (patch) | |
tree | 08fe4ac15aec508b370262ad653c83a91be247b5 /sound/soc/intel/common/sst-dsp.c | |
parent | d2bb390a2081a36ffe906724d2848d846f2aeb29 (diff) | |
parent | 141dee78c40ac2c43aa4ff306688d625e1c731de (diff) |
Merge tag 'asoc-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.11
Another release that's mainly focused on drivers rather than core
changes, highlights include:
- A huge batch of updates to the Intel drivers, mainly around
DisplayPort and HDMI with some additional board support too.
- Channel mapping support for HDMI.
- Support for AllWinner A31 and A33, Everest Semiconductor ES8328,
Nuvoton NAU8540.
Diffstat (limited to 'sound/soc/intel/common/sst-dsp.c')
-rw-r--r-- | sound/soc/intel/common/sst-dsp.c | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/sound/soc/intel/common/sst-dsp.c b/sound/soc/intel/common/sst-dsp.c index c00ede4ea4d7..11c0805393ff 100644 --- a/sound/soc/intel/common/sst-dsp.c +++ b/sound/soc/intel/common/sst-dsp.c @@ -252,44 +252,44 @@ void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset, 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) + u32 target, u32 time, char *operation) { - int time, ret; u32 reg; - bool done = false; + unsigned long timeout; + int k = 0, s = 500; /* - * we will poll for couple of ms using mdelay, if not successful - * then go to longer sleep using usleep_range + * split the loop into sleeps of varying resolution. more accurately, + * the range of wakeups are: + * Phase 1(first 5ms): min sleep 0.5ms; max sleep 1ms. + * Phase 2:( 5ms to 10ms) : min sleep 0.5ms; max sleep 10ms + * (usleep_range (500, 1000) and usleep_range(5000, 10000) are + * both possible in this phase depending on whether k > 10 or not). + * Phase 3: (beyond 10 ms) min sleep 5ms; max sleep 10ms. */ - /* 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); + timeout = jiffies + msecs_to_jiffies(time); + while (((sst_dsp_shim_read_unlocked(ctx, offset) & mask) != target) + && time_before(jiffies, timeout)) { + k++; + if (k > 10) + s = 5000; + + usleep_range(s, 2*s); } - if (done == false) { - /* sleeping in 10ms steps so adjust timeout value */ - timeout /= 10; + reg = sst_dsp_shim_read_unlocked(ctx, offset); - for (time = 0; time < timeout; time++) { - if ((sst_dsp_shim_read_unlocked(ctx, offset) & mask) == target) - break; + if ((reg & mask) == target) { + dev_dbg(ctx->dev, "FW Poll Status: reg=%#x %s successful\n", + reg, operation); - usleep_range(5000, 10000); - } + return 0; } - reg = sst_dsp_shim_read_unlocked(ctx, offset); - dev_dbg(ctx->dev, "FW Poll Status: reg=%#x %s %s\n", reg, operation, - (time < timeout) ? "successful" : "timedout"); - ret = time < timeout ? 0 : -ETIME; - - return ret; + dev_dbg(ctx->dev, "FW Poll Status: reg=%#x %s timedout\n", + reg, operation); + return -ETIME; } EXPORT_SYMBOL_GPL(sst_dsp_register_poll); |