diff options
Diffstat (limited to 'drivers/serial/max3107.h')
| -rw-r--r-- | drivers/serial/max3107.h | 85 |
1 files changed, 83 insertions, 2 deletions
diff --git a/drivers/serial/max3107.h b/drivers/serial/max3107.h index a5625d1f263..72b30415f41 100644 --- a/drivers/serial/max3107.h +++ b/drivers/serial/max3107.h @@ -10,8 +10,8 @@ * (at your option) any later version. */ -#ifndef _LINUX_SERIAL_MAX3107_H -#define _LINUX_SERIAL_MAX3107_H +#ifndef _MAX3107_H +#define _MAX3107_H /* Serial error status definitions */ #define MAX3107_PARITY_ERROR 1 @@ -355,4 +355,85 @@ #define MAX3107_BRG13_IB460800 (0x000000 | 0x00) #define MAX3107_BRG13_IB921600 (0x000000 | 0x00) + +struct baud_table { + int baud; + u32 new_brg; +}; + +struct max3107_port { + /* UART port structure */ + struct uart_port port; + + /* SPI device structure */ + struct spi_device *spi; + + /* GPIO chip stucture */ + struct gpio_chip chip; + + /* Workqueue that does all the magic */ + struct workqueue_struct *workqueue; + struct work_struct work; + + /* Lock for shared data */ + spinlock_t data_lock; + + /* Device configuration */ + int ext_clk; /* 1 if external clock used */ + int loopback; /* Current loopback mode state */ + int baud; /* Current baud rate */ + + /* State flags */ + int suspended; /* Indicates suspend mode */ + int tx_fifo_empty; /* Flag for TX FIFO state */ + int rx_enabled; /* Flag for receiver state */ + int tx_enabled; /* Flag for transmitter state */ + + u16 irqen_reg; /* Current IRQ enable register value */ + /* Shared data */ + u16 mode1_reg; /* Current mode1 register value*/ + int mode1_commit; /* Flag for setting new mode1 register value */ + u16 lcr_reg; /* Current LCR register value */ + int lcr_commit; /* Flag for setting new LCR register value */ + u32 brg_cfg; /* Current Baud rate generator config */ + int brg_commit; /* Flag for setting new baud rate generator + * config + */ + struct baud_table *baud_tbl; + int handle_irq; /* Indicates that IRQ should be handled */ + + /* Rx buffer and str*/ + u16 *rxbuf; + u8 *rxstr; + /* Tx buffer*/ + u16 *txbuf; + + struct max3107_plat *pdata; /* Platform data */ +}; + +/* Platform data structure */ +struct max3107_plat { + /* Loopback mode enable */ + int loopback; + /* External clock enable */ + int ext_clk; + /* Called during the register initialisation */ + void (*init)(struct max3107_port *s); + /* Called when the port is found and configured */ + int (*configure)(struct max3107_port *s); + /* HW suspend function */ + void (*hw_suspend) (struct max3107_port *s, int suspend); + /* Polling mode enable */ + int polled_mode; + /* Polling period if polling mode enabled */ + int poll_time; +}; + +extern int max3107_rw(struct max3107_port *s, u8 *tx, u8 *rx, int len); +extern void max3107_hw_susp(struct max3107_port *s, int suspend); +extern int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata); +extern int max3107_remove(struct spi_device *spi); +extern int max3107_suspend(struct spi_device *spi, pm_message_t state); +extern int max3107_resume(struct spi_device *spi); + #endif /* _LINUX_SERIAL_MAX3107_H */ |