diff options
Diffstat (limited to 'drivers/soundwire/intel.h')
| -rw-r--r-- | drivers/soundwire/intel.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h new file mode 100644 index 000000000..de9883313 --- /dev/null +++ b/drivers/soundwire/intel.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ +/* Copyright(c) 2015-17 Intel Corporation. */ + +#ifndef __SDW_INTEL_LOCAL_H +#define __SDW_INTEL_LOCAL_H + +/** + * struct sdw_intel_link_res - Soundwire Intel link resource structure, + * typically populated by the controller driver. + * @hw_ops: platform-specific ops + * @mmio_base: mmio base of SoundWire registers + * @registers: Link IO registers base + * @shim: Audio shim pointer + * @alh: ALH (Audio Link Hub) pointer + * @irq: Interrupt line + * @ops: Shim callback ops + * @dev: device implementing hw_params and free callbacks + * @shim_lock: mutex to handle access to shared SHIM registers + * @shim_mask: global pointer to check SHIM register initialization + * @clock_stop_quirks: mask defining requested behavior on pm_suspend + * @link_mask: global mask needed for power-up/down sequences + * @cdns: Cadence master descriptor + * @list: used to walk-through all masters exposed by the same controller + */ +struct sdw_intel_link_res { + const struct sdw_intel_hw_ops *hw_ops; + + void __iomem *mmio_base; /* not strictly needed, useful for debug */ + void __iomem *registers; + void __iomem *shim; + void __iomem *alh; + int irq; + const struct sdw_intel_ops *ops; + struct device *dev; + struct mutex *shim_lock; /* protect shared registers */ + u32 *shim_mask; + u32 clock_stop_quirks; + u32 link_mask; + struct sdw_cdns *cdns; + struct list_head list; +}; + +struct sdw_intel { + struct sdw_cdns cdns; + int instance; + struct sdw_intel_link_res *link_res; + bool startup_done; +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; +#endif +}; + +#define cdns_to_intel(_cdns) container_of(_cdns, struct sdw_intel, cdns) + +#define INTEL_MASTER_RESET_ITERATIONS 10 + +#define SDW_INTEL_CHECK_OPS(sdw, cb) ((sdw) && (sdw)->link_res && (sdw)->link_res->hw_ops && \ + (sdw)->link_res->hw_ops->cb) +#define SDW_INTEL_OPS(sdw, cb) ((sdw)->link_res->hw_ops->cb) + +static inline void sdw_intel_debugfs_init(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, debugfs_init)) + SDW_INTEL_OPS(sdw, debugfs_init)(sdw); +} + +static inline void sdw_intel_debugfs_exit(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, debugfs_exit)) + SDW_INTEL_OPS(sdw, debugfs_exit)(sdw); +} + +static inline int sdw_intel_register_dai(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, register_dai)) + return SDW_INTEL_OPS(sdw, register_dai)(sdw); + return -ENOTSUPP; +} + +static inline void sdw_intel_check_clock_stop(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, check_clock_stop)) + SDW_INTEL_OPS(sdw, check_clock_stop)(sdw); +} + +static inline int sdw_intel_start_bus(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, start_bus)) + return SDW_INTEL_OPS(sdw, start_bus)(sdw); + return -ENOTSUPP; +} + +static inline int sdw_intel_start_bus_after_reset(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_reset)) + return SDW_INTEL_OPS(sdw, start_bus_after_reset)(sdw); + return -ENOTSUPP; +} + +static inline int sdw_intel_start_bus_after_clock_stop(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_clock_stop)) + return SDW_INTEL_OPS(sdw, start_bus_after_clock_stop)(sdw); + return -ENOTSUPP; +} + +static inline int sdw_intel_stop_bus(struct sdw_intel *sdw, bool clock_stop) +{ + if (SDW_INTEL_CHECK_OPS(sdw, stop_bus)) + return SDW_INTEL_OPS(sdw, stop_bus)(sdw, clock_stop); + return -ENOTSUPP; +} + +static inline int sdw_intel_link_power_up(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, link_power_up)) + return SDW_INTEL_OPS(sdw, link_power_up)(sdw); + return -ENOTSUPP; +} + +static inline int sdw_intel_link_power_down(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, link_power_down)) + return SDW_INTEL_OPS(sdw, link_power_down)(sdw); + return -ENOTSUPP; +} + +static inline int sdw_intel_shim_check_wake(struct sdw_intel *sdw) +{ + if (SDW_INTEL_CHECK_OPS(sdw, shim_check_wake)) + return SDW_INTEL_OPS(sdw, shim_check_wake)(sdw); + return -ENOTSUPP; +} + +static inline void sdw_intel_shim_wake(struct sdw_intel *sdw, bool wake_enable) +{ + if (SDW_INTEL_CHECK_OPS(sdw, shim_wake)) + SDW_INTEL_OPS(sdw, shim_wake)(sdw, wake_enable); +} + +#endif /* __SDW_INTEL_LOCAL_H */ |