/* * Copyright (c) by Jaroslav Kysela * Universal interface for Audio Codec '97 * * For more details look to AC '97 component specification revision 2.2 * by Intel Corporation (http://developer.intel.com). * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #define AC97_SINGLE_VALUE(reg,shift,mask,invert) \ ((reg) | ((shift) << 8) | ((shift) << 12) | ((mask) << 16) | \ ((invert) << 24)) #define AC97_PAGE_SINGLE_VALUE(reg,shift,mask,invert,page) \ (AC97_SINGLE_VALUE(reg,shift,mask,invert) | (1<<25) | ((page) << 26)) #define AC97_SINGLE(xname, reg, shift, mask, invert) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .info = snd_ac97_info_volsw, \ .get = snd_ac97_get_volsw, .put = snd_ac97_put_volsw, \ .private_value = AC97_SINGLE_VALUE(reg, shift, mask, invert) } #define AC97_PAGE_SINGLE(xname, reg, shift, mask, invert, page) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .info = snd_ac97_info_volsw, \ .get = snd_ac97_get_volsw, .put = snd_ac97_put_volsw, \ .private_value = AC97_PAGE_SINGLE_VALUE(reg, shift, mask, invert, page) } #define AC97_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ .info = snd_ac97_info_volsw, \ .get = snd_ac97_get_volsw, .put = snd_ac97_put_volsw, \ .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) | ((mask) << 16) | ((invert) << 24) } /* enum control */ struct ac97_enum { unsigned char reg; unsigned char shift_l; unsigned char shift_r; unsigned short mask; const char * const *texts; }; #define AC97_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \ { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ .mask = xmask, .texts = xtexts } #define AC97_ENUM_SINGLE(xreg, xshift, xmask, xtexts) \ AC97_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xtexts) #define AC97_ENUM(xname, xenum) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .info = snd_ac97_info_enum_double, \ .get = snd_ac97_get_enum_double, .put = snd_ac97_put_enum_double, \ .private_value = (unsigned long)&xenum } /* ac97_codec.c */ static const struct snd_kcontrol_new snd_ac97_controls_3d[]; static const struct snd_kcontrol_new snd_ac97_controls_spdif[]; static struct snd_kcontrol *snd_ac97_cnew(const struct snd_kcontrol_new *_template, struct snd_ac97 * ac97); static int snd_ac97_info_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); static int snd_ac97_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); static int snd_ac97_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); static int snd_ac97_try_bit(struct snd_ac97 * ac97, int reg, int bit); static int snd_ac97_remove_ctl(struct snd_ac97 *ac97, const char *name, const char *suffix); static int snd_ac97_rename_ctl(struct snd_ac97 *ac97, const char *src, const char *dst, const char *suffix); static int snd_ac97_swap_ctl(struct snd_ac97 *ac97, const char *s1, const char *s2, const char *suffix); static void snd_ac97_rename_vol_ctl(struct snd_ac97 *ac97, const char *src, const char *dst); #ifdef CONFIG_PM static void snd_ac97_restore_status(struct snd_ac97 *ac97); static void snd_ac97_restore_iec958(struct snd_ac97 *ac97); #endif static int snd_ac97_info_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); static int snd_ac97_get_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); static int snd_ac97_put_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); 26:27 -0700 committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-04-06 16:11:56 -0700 commit74813cebd678dd471b4fcd7d3019aecab9dbcedd (patch) tree64d40e8ef5b60959cadd25f13368728b2a9a912e /Documentation parent20aa787e453faec948ad75ebaa1535dbd5adb271 (diff)
Input: bcm_iproc_tsc - use syscon to access shared registers
In Cygnus SOC touch screen controller registers are shared with ADC and flex timer. Using readl/writel could lead to race condition. So touch screen driver is enhanced to support register access using syscon framework API's to take care of mutually exclusive access. Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')