From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- sound/soc/sprd/sprd-mcdt.h | 107 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 sound/soc/sprd/sprd-mcdt.h (limited to 'sound/soc/sprd/sprd-mcdt.h') diff --git a/sound/soc/sprd/sprd-mcdt.h b/sound/soc/sprd/sprd-mcdt.h new file mode 100644 index 000000000..679e3af3b --- /dev/null +++ b/sound/soc/sprd/sprd-mcdt.h @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0 + +#ifndef __SPRD_MCDT_H +#define __SPRD_MCDT_H + +enum sprd_mcdt_channel_type { + SPRD_MCDT_DAC_CHAN, + SPRD_MCDT_ADC_CHAN, + SPRD_MCDT_UNKNOWN_CHAN, +}; + +enum sprd_mcdt_dma_chan { + SPRD_MCDT_DMA_CH0, + SPRD_MCDT_DMA_CH1, + SPRD_MCDT_DMA_CH2, + SPRD_MCDT_DMA_CH3, + SPRD_MCDT_DMA_CH4, +}; + +struct sprd_mcdt_chan_callback { + void (*notify)(void *data); + void *data; +}; + +/** + * struct sprd_mcdt_chan - this struct represents a single channel instance + * @mcdt: the mcdt controller + * @id: channel id + * @fifo_phys: channel fifo physical address which is used for DMA transfer + * @type: channel type + * @cb: channel fifo interrupt's callback interface to notify the fifo events + * @dma_enable: indicate if use DMA mode to transfer data + * @int_enable: indicate if use interrupt mode to notify users to read or + * write data manually + * @list: used to link into the global list + * + * Note: users should not modify any members of this structure. + */ +struct sprd_mcdt_chan { + struct sprd_mcdt_dev *mcdt; + u8 id; + unsigned long fifo_phys; + enum sprd_mcdt_channel_type type; + enum sprd_mcdt_dma_chan dma_chan; + struct sprd_mcdt_chan_callback *cb; + bool dma_enable; + bool int_enable; + struct list_head list; +}; + +#if IS_ENABLED(CONFIG_SND_SOC_SPRD_MCDT) +struct sprd_mcdt_chan *sprd_mcdt_request_chan(u8 channel, + enum sprd_mcdt_channel_type type); +void sprd_mcdt_free_chan(struct sprd_mcdt_chan *chan); + +int sprd_mcdt_chan_write(struct sprd_mcdt_chan *chan, char *tx_buf, u32 size); +int sprd_mcdt_chan_read(struct sprd_mcdt_chan *chan, char *rx_buf, u32 size); +int sprd_mcdt_chan_int_enable(struct sprd_mcdt_chan *chan, u32 water_mark, + struct sprd_mcdt_chan_callback *cb); +void sprd_mcdt_chan_int_disable(struct sprd_mcdt_chan *chan); + +int sprd_mcdt_chan_dma_enable(struct sprd_mcdt_chan *chan, + enum sprd_mcdt_dma_chan dma_chan, u32 water_mark); +void sprd_mcdt_chan_dma_disable(struct sprd_mcdt_chan *chan); + +#else + +struct sprd_mcdt_chan *sprd_mcdt_request_chan(u8 channel, + enum sprd_mcdt_channel_type type) +{ + return NULL; +} + +void sprd_mcdt_free_chan(struct sprd_mcdt_chan *chan) +{ } + +int sprd_mcdt_chan_write(struct sprd_mcdt_chan *chan, char *tx_buf, u32 size) +{ + return -EINVAL; +} + +int sprd_mcdt_chan_read(struct sprd_mcdt_chan *chan, char *rx_buf, u32 size) +{ + return 0; +} + +int sprd_mcdt_chan_int_enable(struct sprd_mcdt_chan *chan, u32 water_mark, + struct sprd_mcdt_chan_callback *cb) +{ + return -EINVAL; +} + +void sprd_mcdt_chan_int_disable(struct sprd_mcdt_chan *chan) +{ } + +int sprd_mcdt_chan_dma_enable(struct sprd_mcdt_chan *chan, + enum sprd_mcdt_dma_chan dma_chan, u32 water_mark) +{ + return -EINVAL; +} + +void sprd_mcdt_chan_dma_disable(struct sprd_mcdt_chan *chan) +{ } + +#endif + +#endif /* __SPRD_MCDT_H */ -- cgit v1.2.3