diff options
Diffstat (limited to 'target/linux/ubicom32/files/sound/ubicom32/ubi32.h')
| -rw-r--r-- | target/linux/ubicom32/files/sound/ubicom32/ubi32.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/sound/ubicom32/ubi32.h b/target/linux/ubicom32/files/sound/ubicom32/ubi32.h new file mode 100644 index 000000000..f43a2150b --- /dev/null +++ b/target/linux/ubicom32/files/sound/ubicom32/ubi32.h @@ -0,0 +1,102 @@ +/* + * sound/ubicom32/ubi32.h + * Common header file for all ubi32- sound drivers + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port 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. + * + * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not, + * see <http://www.gnu.org/licenses/>. + */ + +#ifndef _UBI32_H +#define _UBI32_H + +#define SND_UBI32_DEBUG 0 // Debug flag + +#include <linux/platform_device.h> +#include <asm/devtree.h> +#include <asm/audio.h> +#include <asm/ubi32-pcm.h> + +struct ubi32_snd_priv; + +typedef int (*set_channels_t)(struct ubi32_snd_priv *priv, int channels); +typedef int (*set_rate_t)(struct ubi32_snd_priv *priv, int rate); + +struct ubi32_snd_priv { + /* + * Any variables that are needed locally here but NOT in + * the VP itself should go in here. + */ + struct snd_card *card; + struct snd_pcm *pcm; + + /* + * capture (1) or playback (0) + */ + int is_capture; + /* + * DAC parameters. These are the parameters for the specific + * DAC we are driving. The I2S component can run at a range + * of frequencies, but the DAC may be limited. We may want + * to make this an array of some sort in the future? + * + * min/max_sample_rate if set to 0 are ignored. + */ + int max_sample_rate; + int min_sample_rate; + + /* + * The size a period (group) of audio samples. The VP does + * not need to know this; each DMA transfer is made to be + * one period. + */ + u32_t period_size; + + spinlock_t ubi32_lock; + + struct audio_regs *ar; + struct audio_dev_regs *adr; + u32 irq_idx; + u8 tx_irq; + u8 rx_irq; + + void *client; + + /* + * Operations which the base DAC driver can implement + */ + set_channels_t set_channels; + set_rate_t set_rate; + + /* + * platform data + */ + struct ubi32pcm_platform_data *pdata; + + /* + * Private driver data (used for DAC driver control, etc) + */ + void *drvdata; +}; + +#define snd_ubi32_priv_get_drv(priv) ((priv)->drvdata) +#define snd_ubi32_priv_set_drv(priv, data) (((priv)->drvdata) = (void *)(data)) + +extern int snd_ubi32_pcm_probe(struct ubi32_snd_priv *ubi32_priv, struct platform_device *pdev); +extern void snd_ubi32_pcm_remove(struct ubi32_snd_priv *ubi32_priv); + +#endif |