The DSP control information contains various hints about the usage of the control use these when handling the control.

Signed-off-by: Charles Keepax ckeepax@opensource.wolfsonmicro.com ---

Changes since v1: - Set the actual control access flags rather than implementing that in the get and put callbacks.

Thanks, Charles

sound/soc/codecs/wm_adsp.c | 43 +++++++++++++++++++++++++++++++++++-------- sound/soc/codecs/wmfw.h | 5 +++++ 2 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 53fc7f8..f6642c1 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -240,6 +240,7 @@ struct wm_coeff_ctl { size_t len; unsigned int set:1; struct snd_kcontrol *kcontrol; + unsigned int flags; };

static int wm_adsp_fw_get(struct snd_kcontrol *kcontrol, @@ -472,7 +473,15 @@ static int wm_coeff_get(struct snd_kcontrol *kcontrol, struct wm_coeff_ctl *ctl = (struct wm_coeff_ctl *)kcontrol->private_value; char *p = ucontrol->value.bytes.data;

+ if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) { + if (ctl->enabled) + return wm_coeff_read_control(ctl, p, ctl->len); + else + return -EPERM; + } + memcpy(p, ctl->cache, ctl->len); + return 0; }

@@ -501,6 +510,15 @@ static int wmfw_add_ctl(struct wm_adsp *dsp, struct wm_coeff_ctl *ctl) kcontrol->put = wm_coeff_put; kcontrol->private_value = (unsigned long)ctl;

+ if (ctl->flags) { + if (ctl->flags & WMFW_CTL_FLAG_WRITEABLE) + kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_WRITE; + if (ctl->flags & WMFW_CTL_FLAG_READABLE) + kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_READ; + if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) + kcontrol->access |= SNDRV_CTL_ELEM_ACCESS_VOLATILE; + } + ret = snd_soc_add_card_controls(dsp->card, kcontrol, 1); if (ret < 0) @@ -526,6 +544,9 @@ static int wm_coeff_init_control_caches(struct wm_adsp *dsp) list_for_each_entry(ctl, &dsp->ctl_list, list) { if (!ctl->enabled || ctl->set) continue; + if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) + continue; + ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len); @@ -544,7 +565,7 @@ static int wm_coeff_sync_controls(struct wm_adsp *dsp) list_for_each_entry(ctl, &dsp->ctl_list, list) { if (!ctl->enabled) continue; - if (ctl->set) { + if (ctl->set && !(ctl->flags & WMFW_CTL_FLAG_VOLATILE)) { ret = wm_coeff_write_control(ctl, ctl->cache, ctl->len); @@ -569,7 +590,8 @@ static void wm_adsp_ctl_work(struct work_struct *work) static int wm_adsp_create_control(struct wm_adsp *dsp, const struct wm_adsp_alg_region *alg_region, unsigned int offset, unsigned int len, - const char *subname, unsigned int subname_len) + const char *subname, unsigned int subname_len, + unsigned int flags) { struct wm_coeff_ctl *ctl; struct wmfw_ctl_work *ctl_work; @@ -577,6 +599,9 @@ static int wm_adsp_create_control(struct wm_adsp *dsp, char *region_name; int ret;

+ if (flags & WMFW_CTL_FLAG_SYS) + return 0; + switch (alg_region->type) { case WMFW_ADSP1_PM: region_name = "PM"; @@ -649,6 +674,7 @@ static int wm_adsp_create_control(struct wm_adsp *dsp, ctl->ops.xput = wm_coeff_put; ctl->dsp = dsp;

+ ctl->flags = flags; ctl->offset = offset; if (len > 512) { adsp_warn(dsp, "Truncating control %s from %d\n", @@ -852,7 +878,8 @@ static int wm_adsp_parse_coeff(struct wm_adsp *dsp, coeff_blk.offset, coeff_blk.len, coeff_blk.name, - coeff_blk.name_len); + coeff_blk.name_len, + coeff_blk.flags); if (ret < 0) adsp_err(dsp, "Failed to create control: %.*s, %d\n", coeff_blk.name_len, coeff_blk.name, ret); @@ -1237,7 +1264,7 @@ static int wm_adsp1_setup_algs(struct wm_adsp *dsp) len -= be32_to_cpu(adsp1_alg[i].dm); len *= 4; wm_adsp_create_control(dsp, alg_region, 0, - len, NULL, 0); + len, NULL, 0, 0); } else { adsp_warn(dsp, "Missing length info for region DM with ID %x\n", be32_to_cpu(adsp1_alg[i].alg.id)); @@ -1257,7 +1284,7 @@ static int wm_adsp1_setup_algs(struct wm_adsp *dsp) len -= be32_to_cpu(adsp1_alg[i].zm); len *= 4; wm_adsp_create_control(dsp, alg_region, 0, - len, NULL, 0); + len, NULL, 0, 0); } else { adsp_warn(dsp, "Missing length info for region ZM with ID %x\n", be32_to_cpu(adsp1_alg[i].alg.id)); @@ -1347,7 +1374,7 @@ static int wm_adsp2_setup_algs(struct wm_adsp *dsp) len -= be32_to_cpu(adsp2_alg[i].xm); len *= 4; wm_adsp_create_control(dsp, alg_region, 0, - len, NULL, 0); + len, NULL, 0, 0); } else { adsp_warn(dsp, "Missing length info for region XM with ID %x\n", be32_to_cpu(adsp2_alg[i].alg.id)); @@ -1367,7 +1394,7 @@ static int wm_adsp2_setup_algs(struct wm_adsp *dsp) len -= be32_to_cpu(adsp2_alg[i].ym); len *= 4; wm_adsp_create_control(dsp, alg_region, 0, - len, NULL, 0); + len, NULL, 0, 0); } else { adsp_warn(dsp, "Missing length info for region YM with ID %x\n", be32_to_cpu(adsp2_alg[i].alg.id)); @@ -1387,7 +1414,7 @@ static int wm_adsp2_setup_algs(struct wm_adsp *dsp) len -= be32_to_cpu(adsp2_alg[i].zm); len *= 4; wm_adsp_create_control(dsp, alg_region, 0, - len, NULL, 0); + len, NULL, 0, 0); } else { adsp_warn(dsp, "Missing length info for region ZM with ID %x\n", be32_to_cpu(adsp2_alg[i].alg.id)); diff --git a/sound/soc/codecs/wmfw.h b/sound/soc/codecs/wmfw.h index 04690b2..7613d60 100644 --- a/sound/soc/codecs/wmfw.h +++ b/sound/soc/codecs/wmfw.h @@ -21,6 +21,11 @@ #define WMFW_MAX_COEFF_NAME 256 #define WMFW_MAX_COEFF_DESCR_NAME 256

+#define WMFW_CTL_FLAG_SYS 0x8000 +#define WMFW_CTL_FLAG_VOLATILE 0x0004 +#define WMFW_CTL_FLAG_WRITEABLE 0x0002 +#define WMFW_CTL_FLAG_READABLE 0x0001 + struct wmfw_header { char magic[4]; __le32 len;