If the firmware has any system event signalling controls, signal them during DSP PRE_PMD to tell the firmware it is about to be stopped.
Signed-off-by: Richard Fitzgerald rf@opensource.wolfsonmicro.com --- sound/soc/codecs/wm_adsp.c | 114 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/wmfw.h | 3 ++ 2 files changed, 117 insertions(+)
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 82bb3dc..bdbcc44 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -162,6 +162,14 @@
#define ADSP_MAX_STD_CTRL_SIZE 512
+#define WM_ADSP_ACKED_CTL_TIMEOUT_MS 100 +#define WM_ADSP_ACKED_CTL_N_QUICKPOLLS 10 + +/* + * Event control messages + */ +#define WM_ADSP_FW_EVENT_SHUTDOWN 0x000001 + struct wm_adsp_buf { struct list_head list; void *buf; @@ -776,6 +784,66 @@ static int wm_coeff_info(struct snd_kcontrol *kctl, return 0; }
+static int wm_coeff_write_acked_control(struct wm_coeff_ctl *ctl, + unsigned int event_id) +{ + struct wm_adsp *dsp = ctl->dsp; + u32 val = cpu_to_be32(event_id); + unsigned int reg; + int i, ret; + + ret = wm_coeff_base_reg(ctl, ®); + if (ret) + return ret; + + adsp_dbg(dsp, "Sending 0x%x to acked control alg 0x%x %s:0x%x\n", + event_id, ctl->alg_region.alg, + wm_adsp_mem_region_name(ctl->alg_region.type), ctl->offset); + + ret = regmap_raw_write(dsp->regmap, reg, &val, sizeof(val)); + if (ret) { + adsp_err(dsp, "Failed to write %x: %d\n", reg, ret); + return ret; + } + + /* + * Poll for ack, we initially poll at ~1ms intervals for firmwares + * that respond quickly, then go to ~10ms polls. A firmware is unlikely + * to ack instantly so we do the first 1ms delay before reading the + * control to avoid a pointless bus transaction + */ + for (i = 0; i < WM_ADSP_ACKED_CTL_TIMEOUT_MS;) { + switch (i) { + case 0 ... WM_ADSP_ACKED_CTL_N_QUICKPOLLS - 1: + usleep_range(1000, 2000); + i++; + break; + default: + usleep_range(10000, 20000); + i += 10; + break; + } + + ret = regmap_raw_read(dsp->regmap, reg, &val, sizeof(val)); + if (ret) { + adsp_err(dsp, "Failed to read %x: %d\n", reg, ret); + return ret; + } + + if (val == 0) { + adsp_dbg(dsp, "Acked control ACKED at poll %u\n", i); + return 0; + } + } + + adsp_warn(dsp, "Acked control @0x%x alg:0x%x %s:0x%x timed out\n", + reg, ctl->alg_region.alg, + wm_adsp_mem_region_name(ctl->alg_region.type), + ctl->offset); + + return -ETIMEDOUT; +} + static int wm_coeff_write_control(struct wm_coeff_ctl *ctl, const void *buf, size_t len) { @@ -1055,6 +1123,24 @@ static int wm_coeff_sync_controls(struct wm_adsp *dsp) return 0; }
+static void wm_adsp_signal_event_controls(struct wm_adsp *dsp, + unsigned int event) +{ + struct wm_coeff_ctl *ctl; + int ret; + + list_for_each_entry(ctl, &dsp->ctl_list, list) { + if (ctl->type != WMFW_CTL_TYPE_HOSTEVENT) + continue; + + ret = wm_coeff_write_acked_control(ctl, event); + if (ret) + adsp_warn(dsp, + "Failed to send 0x%x event to alg 0x%x (%d)\n", + event, ctl->alg_region.alg, ret); + } +} + static void wm_adsp_ctl_work(struct work_struct *work) { struct wmfw_ctl_work *ctl_work = container_of(work, @@ -1314,6 +1400,21 @@ static inline void wm_coeff_parse_coeff(struct wm_adsp *dsp, const u8 **data, adsp_dbg(dsp, "\tALSA control len: %#x\n", blk->len); }
+static int wm_adsp_check_coeff_flags(struct wm_adsp *dsp, + const struct wm_coeff_parsed_coeff *coeff_blk, + unsigned int f_required, + unsigned int f_illegal) +{ + if ((coeff_blk->flags & f_illegal) || + ((coeff_blk->flags & f_required) != f_required)) { + adsp_err(dsp, "Illegal flags 0x%x for control type 0x%x\n", + coeff_blk->flags, coeff_blk->ctl_type); + return -EINVAL; + } + + return 0; +} + static int wm_adsp_parse_coeff(struct wm_adsp *dsp, const struct wmfw_region *region) { @@ -1330,6 +1431,16 @@ static int wm_adsp_parse_coeff(struct wm_adsp *dsp, switch (coeff_blk.ctl_type) { case SNDRV_CTL_ELEM_TYPE_BYTES: break; + case WMFW_CTL_TYPE_HOSTEVENT: + ret = wm_adsp_check_coeff_flags(dsp, &coeff_blk, + WMFW_CTL_FLAG_SYS | + WMFW_CTL_FLAG_VOLATILE | + WMFW_CTL_FLAG_WRITEABLE | + WMFW_CTL_FLAG_READABLE, + 0); + if (ret) + return -EINVAL; + break; default: adsp_err(dsp, "Unknown control type: %d\n", coeff_blk.ctl_type); @@ -2401,6 +2512,9 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, break;
case SND_SOC_DAPM_PRE_PMD: + /* Tell the firmware to cleanup */ + wm_adsp_signal_event_controls(dsp, WM_ADSP_FW_EVENT_SHUTDOWN); + /* Log firmware state, it can be useful for analysis */ wm_adsp2_show_fw_status(dsp);
diff --git a/sound/soc/codecs/wmfw.h b/sound/soc/codecs/wmfw.h index 7613d60..892fc74 100644 --- a/sound/soc/codecs/wmfw.h +++ b/sound/soc/codecs/wmfw.h @@ -26,6 +26,9 @@ #define WMFW_CTL_FLAG_WRITEABLE 0x0002 #define WMFW_CTL_FLAG_READABLE 0x0001
+/* Non-ALSA coefficient types start at 0x1000 */ +#define WMFW_CTL_TYPE_HOSTEVENT 0x1001 /* event control */ + struct wmfw_header { char magic[4]; __le32 len;