Merge "soundwire: Add support for soundwire bulk write" (f03ce74a) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/soundwire/soundwire.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -456,6 +456,33 @@ int swr_read(struct swr_device *dev, u8 dev_num, u16 reg_addr,
		}
		EXPORT_SYMBOL(swr_read);

		/**
		* swr_bulk_write - write soundwire slave device registers
		* @dev: pointer to soundwire slave device
		* @dev_num: logical device num of soundwire slave device
		* @reg_addr: register address of soundwire slave device
		* @buf: contains value of register address
		* @len: indicates number of registers
		*
		* This API will write the value of the register address to
		* soundwire slave device
		*/
		int swr_bulk_write(struct swr_device dev, u8 dev_num, void reg,
		const void *buf, size_t len)
		{
		struct swr_master *master;

		if (!dev \|\| !dev->master)
		return -EINVAL;

		master = dev->master;
		if (master->bulk_write)
		return master->bulk_write(master, dev_num, reg, buf, len);

		return -ENOSYS;
		}
		EXPORT_SYMBOL(swr_bulk_write);

		/**
		* swr_write - write soundwire slave device registers
		* @dev: pointer to soundwire slave device

+5 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,8 @@ struct swr_master {
		void *buf, u32 len);
		int (write)(struct swr_master mstr, u8 dev_num, u16 reg_addr,
		const void *buf);
		int (bulk_write)(struct swr_master master, u8 dev_num, void *reg,
		const void *buf, size_t len);
		int (get_logical_dev_num)(struct swr_master mstr, u64 dev_id,
		u8 *dev_num);
		};
		@@ -259,6 +261,9 @@ extern int swr_read(struct swr_device *dev, u8 dev_num, u16 reg_addr,
		extern int swr_write(struct swr_device *dev, u8 dev_num, u16 reg_addr,
		const void *buf);

		extern int swr_bulk_write(struct swr_device dev, u8 dev_num, void reg_addr,
		const void *buf, size_t len);

		extern int swr_connect_port(struct swr_device dev, u8 port_id, u8 num_port,
		u8 ch_mask, u32 ch_rate, u8 *num_ch);