diff options
Diffstat (limited to 'drivers/tty/serial/samsung.h')
| -rw-r--r-- | drivers/tty/serial/samsung.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h index eb071dd19b2..d275032aa68 100644 --- a/drivers/tty/serial/samsung.h +++ b/drivers/tty/serial/samsung.h @@ -12,6 +12,8 @@ * published by the Free Software Foundation. */ +#include <linux/dmaengine.h> + struct s3c24xx_uart_info { char *name; unsigned int type; @@ -41,6 +43,40 @@ struct s3c24xx_serial_drv_data { unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; }; +struct s3c24xx_uart_dma { + dma_filter_fn fn; + void *rx_param; + void *tx_param; + + unsigned int rx_chan_id; + unsigned int tx_chan_id; + + struct dma_slave_config rx_conf; + struct dma_slave_config tx_conf; + + struct dma_chan *rx_chan; + struct dma_chan *tx_chan; + + dma_addr_t rx_addr; + dma_addr_t tx_addr; + + dma_cookie_t rx_cookie; + dma_cookie_t tx_cookie; + + char *rx_buf; + + dma_addr_t tx_transfer_addr; + + size_t rx_size; + size_t tx_size; + + struct dma_async_tx_descriptor *tx_desc; + struct dma_async_tx_descriptor *rx_desc; + + int tx_bytes_requested; + int rx_bytes_requested; +}; + struct s3c24xx_uart_port { unsigned char rx_claimed; unsigned char tx_claimed; @@ -50,6 +86,10 @@ struct s3c24xx_uart_port { unsigned int rx_irq; unsigned int tx_irq; + unsigned int tx_in_progress; + unsigned int tx_mode; + unsigned int rx_mode; + struct s3c24xx_uart_info *info; struct clk *clk; struct clk *baudclk; @@ -59,6 +99,8 @@ struct s3c24xx_uart_port { /* reference to platform data */ struct s3c2410_uartcfg *cfg; + struct s3c24xx_uart_dma *dma; + #ifdef CONFIG_CPU_FREQ struct notifier_block freq_transition; #endif |