ALSA: usb: Use BIT() for bit values
Instead of the explicit "1 << x", use BIT() macro for one bit values. This will improve the readability and also avoids the possible bad value for 31bit shift. Link: https://patch.msgid.link/20240715123646.26679-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -82,13 +82,13 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
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fp->fmt_bits = sample_width;
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if ((pcm_formats == 0) &&
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(format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) {
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(format == 0 || format == BIT(UAC_FORMAT_TYPE_I_UNDEFINED))) {
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/* some devices don't define this correctly... */
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usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n",
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fp->iface, fp->altsetting);
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format = 1 << UAC_FORMAT_TYPE_I_PCM;
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format = BIT(UAC_FORMAT_TYPE_I_PCM);
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}
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if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
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if (format & BIT(UAC_FORMAT_TYPE_I_PCM)) {
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if (((chip->usb_id == USB_ID(0x0582, 0x0016)) ||
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/* Edirol SD-90 */
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(chip->usb_id == USB_ID(0x0582, 0x000c))) &&
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@ -128,7 +128,7 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
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break;
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}
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}
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if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
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if (format & BIT(UAC_FORMAT_TYPE_I_PCM8)) {
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/* Dallas DS4201 workaround: it advertises U8 format, but really
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supports S8. */
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if (chip->usb_id == USB_ID(0x04fa, 0x4201))
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@ -136,15 +136,12 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
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else
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pcm_formats |= SNDRV_PCM_FMTBIT_U8;
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}
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if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
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if (format & BIT(UAC_FORMAT_TYPE_I_IEEE_FLOAT))
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pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
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}
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if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
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if (format & BIT(UAC_FORMAT_TYPE_I_ALAW))
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pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
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}
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if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
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if (format & BIT(UAC_FORMAT_TYPE_I_MULAW))
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pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
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}
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if (format & ~0x3f) {
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usb_audio_info(chip,
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"%u:%d : unsupported format bits %#llx\n",
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@ -433,7 +433,7 @@ int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
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{
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int err;
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if (cval->cached & (1 << channel)) {
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if (cval->cached & BIT(channel)) {
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*value = cval->cache_val[index];
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return 0;
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}
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@ -445,7 +445,7 @@ int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
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cval->control, channel, err);
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return err;
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}
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cval->cached |= 1 << channel;
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cval->cached |= BIT(channel);
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cval->cache_val[index] = *value;
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return 0;
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}
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@ -522,7 +522,7 @@ int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
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int err;
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unsigned int read_only = (channel == 0) ?
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cval->master_readonly :
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cval->ch_readonly & (1 << (channel - 1));
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cval->ch_readonly & BIT(channel - 1);
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if (read_only) {
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usb_audio_dbg(cval->head.mixer->chip,
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@ -536,7 +536,7 @@ int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
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value);
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if (err < 0)
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return err;
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cval->cached |= 1 << channel;
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cval->cached |= BIT(channel);
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cval->cache_val[index] = value;
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return 0;
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}
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@ -1253,7 +1253,7 @@ static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
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int minchn = 0;
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if (cval->cmask) {
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for (i = 0; i < MAX_CHANNELS; i++)
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if (cval->cmask & (1 << i)) {
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if (cval->cmask & BIT(i)) {
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minchn = i + 1;
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break;
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}
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@ -1358,7 +1358,7 @@ no_res_check:
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} else {
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idx = 0;
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for (i = 0; i < MAX_CHANNELS; i++) {
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if (cval->cmask & (1 << i)) {
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if (cval->cmask & BIT(i)) {
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init_cur_mix_raw(cval, i + 1, idx);
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idx++;
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}
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@ -1416,7 +1416,7 @@ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol,
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if (cval->cmask) {
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cnt = 0;
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for (c = 0; c < MAX_CHANNELS; c++) {
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if (!(cval->cmask & (1 << c)))
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if (!(cval->cmask & BIT(c)))
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continue;
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err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val);
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if (err < 0)
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@ -1448,7 +1448,7 @@ static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol,
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if (cval->cmask) {
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cnt = 0;
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for (c = 0; c < MAX_CHANNELS; c++) {
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if (!(cval->cmask & (1 << c)))
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if (!(cval->cmask & BIT(c)))
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continue;
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err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval);
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if (err < 0)
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@ -1700,7 +1700,7 @@ static void __build_feature_ctl(struct usb_mixer_interface *mixer,
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} else {
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int i, c = 0;
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for (i = 0; i < 16; i++)
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if (ctl_mask & (1 << i))
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if (ctl_mask & BIT(i))
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c++;
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cval->channels = c;
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cval->ch_readonly = readonly_mask;
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@ -2060,8 +2060,8 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
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mask = snd_usb_combine_bytes(bmaControls +
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csize * (j+1), csize);
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if (mask & (1 << i))
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ch_bits |= (1 << j);
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if (mask & BIT(i))
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ch_bits |= BIT(j);
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}
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/* audio class v1 controls are never read-only */
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@ -2072,7 +2072,7 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
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if (ch_bits & 1)
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build_feature_ctl(state, _ftr, ch_bits, control,
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&iterm, unitid, 0);
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if (master_bits & (1 << i))
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if (master_bits & BIT(i))
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build_feature_ctl(state, _ftr, 0, control,
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&iterm, unitid, 0);
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}
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@ -2088,9 +2088,9 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
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mask = snd_usb_combine_bytes(bmaControls +
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csize * (j+1), csize);
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if (uac_v2v3_control_is_readable(mask, control)) {
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ch_bits |= (1 << j);
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ch_bits |= BIT(j);
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if (!uac_v2v3_control_is_writeable(mask, control))
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ch_read_only |= (1 << j);
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ch_read_only |= BIT(j);
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}
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}
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@ -2181,7 +2181,7 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
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__u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol);
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if (check_matrix_bitmap(c, in_ch, i, num_outs)) {
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cval->cmask |= (1 << i);
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cval->cmask |= BIT(i);
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cval->channels++;
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}
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}
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@ -2504,7 +2504,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid,
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if (state->mixer->protocol == UAC_VERSION_1) {
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if (!(controls[valinfo->control / 8] &
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(1 << ((valinfo->control % 8) - 1))))
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BIT((valinfo->control % 8) - 1)))
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continue;
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} else { /* UAC_VERSION_2/3 */
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if (!uac_v2v3_control_is_readable(controls[valinfo->control / 8],
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@ -3448,7 +3448,7 @@ static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer,
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case UAC2_CS_CUR:
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/* invalidate cache, so the value is read from the device */
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if (channel)
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info->cached &= ~(1 << channel);
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info->cached &= ~BIT(channel);
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else /* master channel */
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info->cached = 0;
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@ -3684,9 +3684,9 @@ static int restore_mixer_value(struct usb_mixer_elem_list *list)
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if (cval->cmask) {
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idx = 0;
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for (c = 0; c < MAX_CHANNELS; c++) {
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if (!(cval->cmask & (1 << c)))
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if (!(cval->cmask & BIT(c)))
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continue;
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if (cval->cached & (1 << (c + 1))) {
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if (cval->cached & BIT(c + 1)) {
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err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
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cval->cache_val[idx]);
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if (err < 0)
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@ -1139,7 +1139,7 @@ static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
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for (out = 0; out < 8; out++) {
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control = out + 1;
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for (in = 0; in < 8; in++) {
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cmask = 1 << in;
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cmask = BIT(in);
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snprintf(name, sizeof(name),
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"AIn%d - Out%d Capture Volume",
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in + 1, out + 1);
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@ -1150,7 +1150,7 @@ static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
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return err;
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}
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for (in = 8; in < 16; in++) {
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cmask = 1 << in;
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cmask = BIT(in);
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snprintf(name, sizeof(name),
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"DIn%d - Out%d Playback Volume",
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in - 7, out + 1);
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@ -1215,7 +1215,7 @@ static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
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const unsigned int control = 7;
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for (ch = 0; ch < 4; ++ch) {
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cmask = 1 << ch;
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cmask = BIT(ch);
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snprintf(name, sizeof(name),
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"Effect Return %d Volume", ch + 1);
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err = snd_create_std_mono_ctl(mixer, id, control,
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@ -1239,7 +1239,7 @@ static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
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const unsigned int control = 9;
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for (ch = 0; ch < 8; ++ch) {
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cmask = 1 << ch;
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cmask = BIT(ch);
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snprintf(name, sizeof(name),
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"Effect Send AIn%d Volume", ch + 1);
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err = snd_create_std_mono_ctl(mixer, id, control, cmask,
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@ -1249,7 +1249,7 @@ static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
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return err;
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}
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for (ch = 8; ch < 16; ++ch) {
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cmask = 1 << ch;
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cmask = BIT(ch);
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snprintf(name, sizeof(name),
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"Effect Send DIn%d Volume", ch - 7);
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err = snd_create_std_mono_ctl(mixer, id, control, cmask,
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@ -1352,7 +1352,7 @@ static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
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chan - num_outs + 1, out + 1);
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}
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cmask = (out == 0) ? 0 : 1 << (out - 1);
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cmask = (out == 0) ? 0 : BIT(out - 1);
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offset = chan * num_outs;
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err = snd_create_std_mono_ctl_offset(mixer, id, control,
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cmask, val_type, offset, name,
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@ -1438,7 +1438,7 @@ static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
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chan - num_outs + 1);
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}
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cmask = (chan == 0) ? 0 : 1 << (chan - 1);
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cmask = (chan == 0) ? 0 : BIT(chan - 1);
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err = snd_create_std_mono_ctl(mixer, id, control,
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cmask, val_type, name,
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&snd_usb_mixer_vol_tlv);
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@ -1480,7 +1480,7 @@ static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer
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chan + 1);
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cmask = (chan == 0) ? 0 :
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1 << (chan + (chan % 2) * num_outs - 1);
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BIT(chan + (chan % 2) * num_outs - 1);
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err = snd_create_std_mono_ctl_offset(mixer, id, control,
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cmask, val_type, offset, name,
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&snd_usb_mixer_vol_tlv);
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@ -2568,12 +2568,12 @@ static int snd_bbfpro_ctl_update(struct usb_mixer_interface *mixer, u8 reg,
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usb_idx = 3;
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usb_val = value ? 3 : 0;
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} else {
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usb_idx = 1 << index;
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usb_idx = BIT(index);
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usb_val = value ? usb_idx : 0;
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}
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} else {
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usb_req = SND_BBFPRO_USBREQ_CTL_REG2;
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usb_idx = 1 << index;
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usb_idx = BIT(index);
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usb_val = value ? usb_idx : 0;
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}
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