diff options
Diffstat (limited to 'sound/soc/qcom/lpass.h')
| -rw-r--r-- | sound/soc/qcom/lpass.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h new file mode 100644 index 000000000000..5c99b3dace86 --- /dev/null +++ b/sound/soc/qcom/lpass.h @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * 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. + * + * lpass.h - Definitions for the QTi LPASS + */ + +#ifndef __LPASS_H__ +#define __LPASS_H__ + +#include <linux/clk.h> +#include <linux/compiler.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define LPASS_AHBIX_CLOCK_FREQUENCY 131072000 + +/* Both the CPU DAI and platform drivers will access this data */ +struct lpass_data { + + /* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */ + struct clk *ahbix_clk; + + /* MI2S system clock */ + struct clk *mi2s_osr_clk; + + /* MI2S bit clock (derived from system clock by a divider */ + struct clk *mi2s_bit_clk; + + /* low-power audio interface (LPAIF) registers */ + void __iomem *lpaif; + + /* regmap backed by the low-power audio interface (LPAIF) registers */ + struct regmap *lpaif_map; + + /* interrupts from the low-power audio interface (LPAIF) */ + int lpaif_irq; +}; + +/* register the platform driver from the CPU DAI driver */ +int asoc_qcom_lpass_platform_register(struct platform_device *); + +#endif /* __LPASS_H__ */ |