diff options
Diffstat (limited to 'sound/soc/soc-ops.c')
-rw-r--r-- | sound/soc/soc-ops.c | 169 |
1 files changed, 125 insertions, 44 deletions
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index 10f48827bb0e..2d25748ca706 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -14,7 +14,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> -#include <linux/delay.h> #include <linux/pm.h> #include <linux/bitops.h> #include <linux/ctype.h> @@ -177,20 +176,28 @@ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; - int platform_max; - - if (!mc->platform_max) - mc->platform_max = mc->max; - platform_max = mc->platform_max; - - if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) - uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; - else + const char *vol_string = NULL; + int max; + + max = uinfo->value.integer.max = mc->max - mc->min; + if (mc->platform_max && mc->platform_max < max) + max = mc->platform_max; + + if (max == 1) { + /* Even two value controls ending in Volume should always be integer */ + vol_string = strstr(kcontrol->id.name, " Volume"); + if (vol_string && !strcmp(vol_string, " Volume")) + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + else + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + } else { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + } uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; uinfo->value.integer.min = 0; - uinfo->value.integer.max = platform_max - mc->min; + uinfo->value.integer.max = max; + return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_volsw); @@ -203,7 +210,8 @@ EXPORT_SYMBOL_GPL(snd_soc_info_volsw); * Callback to provide information about a single mixer control, or a double * mixer control that spans 2 registers of the SX TLV type. SX TLV controls * have a range that represents both positive and negative values either side - * of zero but without a sign bit. + * of zero but without a sign bit. min is the minimum register value, max is + * the number of steps. * * Returns 0 for success. */ @@ -212,12 +220,21 @@ int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol, { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; + int max; - snd_soc_info_volsw(kcontrol, uinfo); - /* Max represents the number of levels in an SX control not the - * maximum value, so add the minimum value back on - */ - uinfo->value.integer.max += mc->min; + if (mc->platform_max) + max = mc->platform_max; + else + max = mc->max; + + if (max == 1 && !strstr(kcontrol->id.name, " Volume")) + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + else + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + + uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = max; return 0; } @@ -308,7 +325,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, unsigned int sign_bit = mc->sign_bit; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; - int err; + int err, ret; bool type_2r = false; unsigned int val2 = 0; unsigned int val, val_mask; @@ -316,13 +333,27 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, if (sign_bit) mask = BIT(sign_bit + 1) - 1; - val = ((ucontrol->value.integer.value[0] + min) & mask); + if (ucontrol->value.integer.value[0] < 0) + return -EINVAL; + val = ucontrol->value.integer.value[0]; + if (mc->platform_max && ((int)val + min) > mc->platform_max) + return -EINVAL; + if (val > max - min) + return -EINVAL; + val = (val + min) & mask; if (invert) val = max - val; val_mask = mask << shift; val = val << shift; if (snd_soc_volsw_is_stereo(mc)) { - val2 = ((ucontrol->value.integer.value[1] + min) & mask); + if (ucontrol->value.integer.value[1] < 0) + return -EINVAL; + val2 = ucontrol->value.integer.value[1]; + if (mc->platform_max && ((int)val2 + min) > mc->platform_max) + return -EINVAL; + if (val2 > max - min) + return -EINVAL; + val2 = (val2 + min) & mask; if (invert) val2 = max - val2; if (reg == reg2) { @@ -336,12 +367,18 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, err = snd_soc_component_update_bits(component, reg, val_mask, val); if (err < 0) return err; + ret = err; - if (type_2r) + if (type_2r) { err = snd_soc_component_update_bits(component, reg2, val_mask, - val2); + val2); + /* Don't discard any error code or drop change flag */ + if (ret == 0 || err < 0) { + ret = err; + } + } - return err; + return ret; } EXPORT_SYMBOL_GPL(snd_soc_put_volsw); @@ -407,25 +444,46 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, int min = mc->min; unsigned int mask = (1U << (fls(min + max) - 1)) - 1; int err = 0; - unsigned int val, val_mask, val2 = 0; + int ret; + unsigned int val, val_mask; + if (ucontrol->value.integer.value[0] < 0) + return -EINVAL; + val = ucontrol->value.integer.value[0]; + if (mc->platform_max && val > mc->platform_max) + return -EINVAL; + if (val > max) + return -EINVAL; val_mask = mask << shift; - val = (ucontrol->value.integer.value[0] + min) & mask; + val = (val + min) & mask; val = val << shift; err = snd_soc_component_update_bits(component, reg, val_mask, val); if (err < 0) return err; + ret = err; if (snd_soc_volsw_is_stereo(mc)) { + unsigned int val2 = ucontrol->value.integer.value[1]; + + if (mc->platform_max && val2 > mc->platform_max) + return -EINVAL; + if (val2 > max) + return -EINVAL; + val_mask = mask << rshift; - val2 = (ucontrol->value.integer.value[1] + min) & mask; + val2 = (val2 + min) & mask; val2 = val2 << rshift; err = snd_soc_component_update_bits(component, reg2, val_mask, val2); + + /* Don't discard any error code or drop change flag */ + if (ret == 0 || err < 0) { + ret = err; + } } - return err; + return ret; } EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); @@ -483,7 +541,15 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned int val, val_mask; - int ret; + int err, ret, tmp; + + tmp = ucontrol->value.integer.value[0]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min) + return -EINVAL; if (invert) val = (max - ucontrol->value.integer.value[0]) & mask; @@ -492,11 +558,20 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, val_mask = mask << shift; val = val << shift; - ret = snd_soc_component_update_bits(component, reg, val_mask, val); - if (ret < 0) - return ret; + err = snd_soc_component_update_bits(component, reg, val_mask, val); + if (err < 0) + return err; + ret = err; if (snd_soc_volsw_is_stereo(mc)) { + tmp = ucontrol->value.integer.value[1]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min) + return -EINVAL; + if (invert) val = (max - ucontrol->value.integer.value[1]) & mask; else @@ -504,8 +579,12 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, val_mask = mask << shift; val = val << shift; - ret = snd_soc_component_update_bits(component, rreg, val_mask, + err = snd_soc_component_update_bits(component, rreg, val_mask, val); + /* Don't discard any error code or drop change flag */ + if (ret == 0 || err < 0) { + ret = err; + } } return ret; @@ -573,7 +652,6 @@ int snd_soc_limit_volume(struct snd_soc_card *card, const char *name, int max) { struct snd_kcontrol *kctl; - struct soc_mixer_control *mc; int ret = -EINVAL; /* Sanity check for name and max */ @@ -582,8 +660,8 @@ int snd_soc_limit_volume(struct snd_soc_card *card, kctl = snd_soc_card_get_kcontrol(card, name); if (kctl) { - mc = (struct soc_mixer_control *)kctl->private_value; - if (max <= mc->max) { + struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; + if (max <= mc->max - mc->min) { mc->platform_max = max; ret = 0; } @@ -811,11 +889,10 @@ int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, long min = mc->min; long max = mc->max; long val = 0; - unsigned int regval; unsigned int i; for (i = 0; i < regcount; i++) { - regval = snd_soc_component_read(component, regbase+i); + unsigned int regval = snd_soc_component_read(component, regbase+i); val |= (regval & regwmask) << (regwshift*(regcount-i-1)); } val &= mask; @@ -856,22 +933,26 @@ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, unsigned long mask = (1UL<<mc->nbits)-1; long max = mc->max; long val = ucontrol->value.integer.value[0]; - unsigned int i, regval, regmask; - int err; + int ret = 0; + unsigned int i; + if (val < mc->min || val > mc->max) + return -EINVAL; if (invert) val = max - val; val &= mask; for (i = 0; i < regcount; i++) { - regval = (val >> (regwshift*(regcount-i-1))) & regwmask; - regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; - err = snd_soc_component_update_bits(component, regbase+i, - regmask, regval); + unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask; + unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; + int err = snd_soc_component_update_bits(component, regbase+i, + regmask, regval); if (err < 0) return err; + if (err > 0) + ret = err; } - return 0; + return ret; } EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); |