/* * PC-Speaker driver for Linux * * Mixer implementation. * Copyright (C) 2001-2008 Stas Sergeev */ #include #include #include "pcsp.h" static int pcsp_enable_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; return 0; } static int pcsp_enable_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); ucontrol->value.integer.value[0] = chip->enable; return 0; } static int pcsp_enable_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); int changed = 0; int enab = ucontrol->value.integer.value[0]; if (enab != chip->enable) { chip->enable = enab; changed = 1; } return changed; } static int pcsp_treble_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = chip->max_treble + 1; if (uinfo->value.enumerated.item > chip->max_treble) uinfo->value.enumerated.item = chip->max_treble; sprintf(uinfo->value.enumerated.name, "%lu", (unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item)); return 0; } static int pcsp_treble_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); ucontrol->value.enumerated.item[0] = chip->treble; return 0; } static int pcsp_treble_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); int changed = 0; int treble = ucontrol->value.enumerated.item[0]; if (treble != chip->treble) { chip->treble = treble; #if PCSP_DEBUG printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE()); #endif changed = 1; } return changed; } static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; return 0; } static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); ucontrol->value.integer.value[0] = chip->pcspkr; return 0; } static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); int changed = 0; int spkr = ucontrol->value.integer.value[0]; if (spkr != chip->pcspkr) { chip->pcspkr = spkr; changed = 1; } return changed; } #define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \ { \ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ .name = ctl_name, \ .info = pcsp_##ctl_type##_info, \ .get = pcsp_##ctl_type##_get, \ .put = pcsp_##ctl_type##_put, \ } static struct snd_kcontrol_new snd_pcsp_controls_pcm[] = { PCSP_MIXER_CONTROL(enable, "Master Playback Switch"), PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"), }; static struct snd_kcontrol_new snd_pcsp_controls_spkr[] = { PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"), }; static int snd_pcsp_ctls_add(struct snd_pcsp *chip, struct snd_kcontrol_new *ctls, int num) { int i, err; struct snd_card *card = chip->card; for (i = 0; i < num; i++) { err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip)); if (err < 0) return err; } return 0; } int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm) { int err; struct snd_card *card = chip->card; if (!nopcm) { err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm, ARRAY_SIZE(snd_pcsp_controls_pcm)); if (err < 0) return err; } err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr, ARRAY_SIZE(snd_pcsp_controls_spkr)); if (err < 0) return err; strcpy(card->mixername, "PC-Speaker"); return 0; } ignorews' onchange='this.form.submit();'>mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/sound/designware_i2s.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/sound/designware_i2s.h')