Trigger commands may be passed multiple times. To avoid errors with
clk_enable/disable, store the saif state and return if saif is already
running/stopped.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (saif->state == MXS_SAIF_STATE_RUNNING)
+ return 0;
+
dev_dbg(cpu_dai->dev, "start\n");
clk_enable(master_saif->clk);
dev_dbg(cpu_dai->dev, "start\n");
clk_enable(master_saif->clk);
}
master_saif->ongoing = 1;
}
master_saif->ongoing = 1;
+ saif->state = MXS_SAIF_STATE_RUNNING;
dev_dbg(saif->dev, "CTRL 0x%x STAT 0x%x\n",
__raw_readl(saif->base + SAIF_CTRL),
dev_dbg(saif->dev, "CTRL 0x%x STAT 0x%x\n",
__raw_readl(saif->base + SAIF_CTRL),
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (saif->state == MXS_SAIF_STATE_STOPPED)
+ return 0;
+
dev_dbg(cpu_dai->dev, "stop\n");
/* wait a while for the current sample to complete */
dev_dbg(cpu_dai->dev, "stop\n");
/* wait a while for the current sample to complete */
}
master_saif->ongoing = 0;
}
master_saif->ongoing = 0;
+ saif->state = MXS_SAIF_STATE_STOPPED;
u32 fifo_underrun;
u32 fifo_overrun;
u32 fifo_underrun;
u32 fifo_overrun;
+
+ enum {
+ MXS_SAIF_STATE_STOPPED,
+ MXS_SAIF_STATE_RUNNING,
+ } state;
};
extern int mxs_saif_put_mclk(unsigned int saif_id);
};
extern int mxs_saif_put_mclk(unsigned int saif_id);