| /* |
| * max3107.h - spi uart protocol driver header for Maxim 3107 |
| * |
| * Copyright (C) Aavamobile 2009 |
| * Based on serial_max3100.h by Christian Pellegrin |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #ifndef _MAX3107_H |
| #define _MAX3107_H |
| |
| /* Serial error status definitions */ |
| #define MAX3107_PARITY_ERROR 1 |
| #define MAX3107_FRAME_ERROR 2 |
| #define MAX3107_OVERRUN_ERROR 4 |
| #define MAX3107_ALL_ERRORS (MAX3107_PARITY_ERROR | \ |
| MAX3107_FRAME_ERROR | \ |
| MAX3107_OVERRUN_ERROR) |
| |
| /* GPIO definitions */ |
| #define MAX3107_GPIO_BASE 88 |
| #define MAX3107_GPIO_COUNT 4 |
| |
| |
| /* GPIO connected to chip's reset pin */ |
| #define MAX3107_RESET_GPIO 87 |
| |
| |
| /* Chip reset delay */ |
| #define MAX3107_RESET_DELAY 10 |
| |
| /* Chip wakeup delay */ |
| #define MAX3107_WAKEUP_DELAY 50 |
| |
| |
| /* Sleep mode definitions */ |
| #define MAX3107_DISABLE_FORCED_SLEEP 0 |
| #define MAX3107_ENABLE_FORCED_SLEEP 1 |
| #define MAX3107_DISABLE_AUTOSLEEP 2 |
| #define MAX3107_ENABLE_AUTOSLEEP 3 |
| |
| |
| /* Definitions for register access with SPI transfers |
| * |
| * SPI transfer format: |
| * |
| * Master to slave bits xzzzzzzzyyyyyyyy |
| * Slave to master bits aaaaaaaabbbbbbbb |
| * |
| * where: |
| * x = 0 for reads, 1 for writes |
| * z = register address |
| * y = new register value if write, 0 if read |
| * a = unspecified |
| * b = register value if read, unspecified if write |
| */ |
| |
| /* SPI speed */ |
| #define MAX3107_SPI_SPEED (3125000 * 2) |
| |
| /* Write bit */ |
| #define MAX3107_WRITE_BIT (1 << 15) |
| |
| /* SPI TX data mask */ |
| #define MAX3107_SPI_RX_DATA_MASK (0x00ff) |
| |
| /* SPI RX data mask */ |
| #define MAX3107_SPI_TX_DATA_MASK (0x00ff) |
| |
| /* Register access masks */ |
| #define MAX3107_RHR_REG (0x0000) /* RX FIFO */ |
| #define MAX3107_THR_REG (0x0000) /* TX FIFO */ |
| #define MAX3107_IRQEN_REG (0x0100) /* IRQ enable */ |
| #define MAX3107_IRQSTS_REG (0x0200) /* IRQ status */ |
| #define MAX3107_LSR_IRQEN_REG (0x0300) /* LSR IRQ enable */ |
| #define MAX3107_LSR_IRQSTS_REG (0x0400) /* LSR IRQ status */ |
| #define MAX3107_SPCHR_IRQEN_REG (0x0500) /* Special char IRQ enable */ |
| #define MAX3107_SPCHR_IRQSTS_REG (0x0600) /* Special char IRQ status */ |
| #define MAX3107_STS_IRQEN_REG (0x0700) /* Status IRQ enable */ |
| #define MAX3107_STS_IRQSTS_REG (0x0800) /* Status IRQ status */ |
| #define MAX3107_MODE1_REG (0x0900) /* MODE1 */ |
| #define MAX3107_MODE2_REG (0x0a00) /* MODE2 */ |
| #define MAX3107_LCR_REG (0x0b00) /* LCR */ |
| #define MAX3107_RXTO_REG (0x0c00) /* RX timeout */ |
| #define MAX3107_HDPIXDELAY_REG (0x0d00) /* Auto transceiver delays */ |
| #define MAX3107_IRDA_REG (0x0e00) /* IRDA settings */ |
| #define MAX3107_FLOWLVL_REG (0x0f00) /* Flow control levels */ |
| #define MAX3107_FIFOTRIGLVL_REG (0x1000) /* FIFO IRQ trigger levels */ |
| #define MAX3107_TXFIFOLVL_REG (0x1100) /* TX FIFO level */ |
| #define MAX3107_RXFIFOLVL_REG (0x1200) /* RX FIFO level */ |
| #define MAX3107_FLOWCTRL_REG (0x1300) /* Flow control */ |
| #define MAX3107_XON1_REG (0x1400) /* XON1 character */ |
| #define MAX3107_XON2_REG (0x1500) /* XON2 character */ |
| #define MAX3107_XOFF1_REG (0x1600) /* XOFF1 character */ |
| #define MAX3107_XOFF2_REG (0x1700) /* XOFF2 character */ |
| #define MAX3107_GPIOCFG_REG (0x1800) /* GPIO config */ |
| #define MAX3107_GPIODATA_REG (0x1900) /* GPIO data */ |
| #define MAX3107_PLLCFG_REG (0x1a00) /* PLL config */ |
| #define MAX3107_BRGCFG_REG (0x1b00) /* Baud rate generator conf */ |
| #define MAX3107_BRGDIVLSB_REG (0x1c00) /* Baud rate divisor LSB */ |
| #define MAX3107_BRGDIVMSB_REG (0x1d00) /* Baud rate divisor MSB */ |
| #define MAX3107_CLKSRC_REG (0x1e00) /* Clock source */ |
| #define MAX3107_REVID_REG (0x1f00) /* Revision identification */ |
| |
| /* IRQ register bits */ |
| #define MAX3107_IRQ_LSR_BIT (1 << 0) /* LSR interrupt */ |
| #define MAX3107_IRQ_SPCHR_BIT (1 << 1) /* Special char interrupt */ |
| #define MAX3107_IRQ_STS_BIT (1 << 2) /* Status interrupt */ |
| #define MAX3107_IRQ_RXFIFO_BIT (1 << 3) /* RX FIFO interrupt */ |
| #define MAX3107_IRQ_TXFIFO_BIT (1 << 4) /* TX FIFO interrupt */ |
| #define MAX3107_IRQ_TXEMPTY_BIT (1 << 5) /* TX FIFO empty interrupt */ |
| #define MAX3107_IRQ_RXEMPTY_BIT (1 << 6) /* RX FIFO empty interrupt */ |
| #define MAX3107_IRQ_CTS_BIT (1 << 7) /* CTS interrupt */ |
| |
| /* LSR register bits */ |
| #define MAX3107_LSR_RXTO_BIT (1 << 0) /* RX timeout */ |
| #define MAX3107_LSR_RXOVR_BIT (1 << 1) /* RX overrun */ |
| #define MAX3107_LSR_RXPAR_BIT (1 << 2) /* RX parity error */ |
| #define MAX3107_LSR_FRERR_BIT (1 << 3) /* Frame error */ |
| #define MAX3107_LSR_RXBRK_BIT (1 << 4) /* RX break */ |
| #define MAX3107_LSR_RXNOISE_BIT (1 << 5) /* RX noise */ |
| #define MAX3107_LSR_UNDEF6_BIT (1 << 6) /* Undefined/not used */ |
| #define MAX3107_LSR_CTS_BIT (1 << 7) /* CTS pin state */ |
| |
| /* Special character register bits */ |
| #define MAX3107_SPCHR_XON1_BIT (1 << 0) /* XON1 character */ |
| #define MAX3107_SPCHR_XON2_BIT (1 << 1) /* XON2 character */ |
| #define MAX3107_SPCHR_XOFF1_BIT (1 << 2) /* XOFF1 character */ |
| #define MAX3107_SPCHR_XOFF2_BIT (1 << 3) /* XOFF2 character */ |
| #define MAX3107_SPCHR_BREAK_BIT (1 << 4) /* RX break */ |
| #define MAX3107_SPCHR_MULTIDROP_BIT (1 << 5) /* 9-bit multidrop addr char */ |
| #define MAX3107_SPCHR_UNDEF6_BIT (1 << 6) /* Undefined/not used */ |
| #define MAX3107_SPCHR_UNDEF7_BIT (1 << 7) /* Undefined/not used */ |
| |
| /* Status register bits */ |
| #define MAX3107_STS_GPIO0_BIT (1 << 0) /* GPIO 0 interrupt */ |
| #define MAX3107_STS_GPIO1_BIT (1 << 1) /* GPIO 1 interrupt */ |
| #define MAX3107_STS_GPIO2_BIT (1 << 2) /* GPIO 2 interrupt */ |
| #define MAX3107_STS_GPIO3_BIT (1 << 3) /* GPIO 3 interrupt */ |
| #define MAX3107_STS_UNDEF4_BIT (1 << 4) /* Undefined/not used */ |
| #define MAX3107_STS_CLKREADY_BIT (1 << 5) /* Clock ready */ |
| #define MAX3107_STS_SLEEP_BIT (1 << 6) /* Sleep interrupt */ |
| #define MAX3107_STS_UNDEF7_BIT (1 << 7) /* Undefined/not used */ |
| |
| /* MODE1 register bits */ |
| #define MAX3107_MODE1_RXDIS_BIT (1 << 0) /* RX disable */ |
| #define MAX3107_MODE1_TXDIS_BIT (1 << 1) /* TX disable */ |
| #define MAX3107_MODE1_TXHIZ_BIT (1 << 2) /* TX pin three-state */ |
| #define MAX3107_MODE1_RTSHIZ_BIT (1 << 3) /* RTS pin three-state */ |
| #define MAX3107_MODE1_TRNSCVCTRL_BIT (1 << 4) /* Transceiver ctrl enable */ |
| #define MAX3107_MODE1_FORCESLEEP_BIT (1 << 5) /* Force sleep mode */ |
| #define MAX3107_MODE1_AUTOSLEEP_BIT (1 << 6) /* Auto sleep enable */ |
| #define MAX3107_MODE1_IRQSEL_BIT (1 << 7) /* IRQ pin enable */ |
| |
| /* MODE2 register bits */ |
| #define MAX3107_MODE2_RST_BIT (1 << 0) /* Chip reset */ |
| #define MAX3107_MODE2_FIFORST_BIT (1 << 1) /* FIFO reset */ |
| #define MAX3107_MODE2_RXTRIGINV_BIT (1 << 2) /* RX FIFO INT invert */ |
| #define MAX3107_MODE2_RXEMPTINV_BIT (1 << 3) /* RX FIFO empty INT invert */ |
| #define MAX3107_MODE2_SPCHR_BIT (1 << 4) /* Special chr detect enable */ |
| #define MAX3107_MODE2_LOOPBACK_BIT (1 << 5) /* Internal loopback enable */ |
| #define MAX3107_MODE2_MULTIDROP_BIT (1 << 6) /* 9-bit multidrop enable */ |
| #define MAX3107_MODE2_ECHOSUPR_BIT (1 << 7) /* ECHO suppression enable */ |
| |
| /* LCR register bits */ |
| #define MAX3107_LCR_LENGTH0_BIT (1 << 0) /* Word length bit 0 */ |
| #define MAX3107_LCR_LENGTH1_BIT (1 << 1) /* Word length bit 1 |
| * |
| * Word length bits table: |
| * 00 -> 5 bit words |
| * 01 -> 6 bit words |
| * 10 -> 7 bit words |
| * 11 -> 8 bit words |
| */ |
| #define MAX3107_LCR_STOPLEN_BIT (1 << 2) /* STOP length bit |
| * |
| * STOP length bit table: |
| * 0 -> 1 stop bit |
| * 1 -> 1-1.5 stop bits if |
| * word length is 5, |
| * 2 stop bits otherwise |
| */ |
| #define MAX3107_LCR_PARITY_BIT (1 << 3) /* Parity bit enable */ |
| #define MAX3107_LCR_EVENPARITY_BIT (1 << 4) /* Even parity bit enable */ |
| #define MAX3107_LCR_FORCEPARITY_BIT (1 << 5) /* 9-bit multidrop parity */ |
| #define MAX3107_LCR_TXBREAK_BIT (1 << 6) /* TX break enable */ |
| #define MAX3107_LCR_RTS_BIT (1 << 7) /* RTS pin control */ |
| #define MAX3107_LCR_WORD_LEN_5 (0x0000) |
| #define MAX3107_LCR_WORD_LEN_6 (0x0001) |
| #define MAX3107_LCR_WORD_LEN_7 (0x0002) |
| #define MAX3107_LCR_WORD_LEN_8 (0x0003) |
| |
| |
| /* IRDA register bits */ |
| #define MAX3107_IRDA_IRDAEN_BIT (1 << 0) /* IRDA mode enable */ |
| #define MAX3107_IRDA_SIR_BIT (1 << 1) /* SIR mode enable */ |
| #define MAX3107_IRDA_SHORTIR_BIT (1 << 2) /* Short SIR mode enable */ |
| #define MAX3107_IRDA_MIR_BIT (1 << 3) /* MIR mode enable */ |
| #define MAX3107_IRDA_RXINV_BIT (1 << 4) /* RX logic inversion enable */ |
| #define MAX3107_IRDA_TXINV_BIT (1 << 5) /* TX logic inversion enable */ |
| #define MAX3107_IRDA_UNDEF6_BIT (1 << 6) /* Undefined/not used */ |
| #define MAX3107_IRDA_UNDEF7_BIT (1 << 7) /* Undefined/not used */ |
| |
| /* Flow control trigger level register masks */ |
| #define MAX3107_FLOWLVL_HALT_MASK (0x000f) /* Flow control halt level */ |
| #define MAX3107_FLOWLVL_RES_MASK (0x00f0) /* Flow control resume level */ |
| #define MAX3107_FLOWLVL_HALT(words) ((words/8) & 0x000f) |
| #define MAX3107_FLOWLVL_RES(words) (((words/8) & 0x000f) << 4) |
| |
| /* FIFO interrupt trigger level register masks */ |
| #define MAX3107_FIFOTRIGLVL_TX_MASK (0x000f) /* TX FIFO trigger level */ |
| #define MAX3107_FIFOTRIGLVL_RX_MASK (0x00f0) /* RX FIFO trigger level */ |
| #define MAX3107_FIFOTRIGLVL_TX(words) ((words/8) & 0x000f) |
| #define MAX3107_FIFOTRIGLVL_RX(words) (((words/8) & 0x000f) << 4) |
| |
| /* Flow control register bits */ |
| #define MAX3107_FLOWCTRL_AUTORTS_BIT (1 << 0) /* Auto RTS flow ctrl enable */ |
| #define MAX3107_FLOWCTRL_AUTOCTS_BIT (1 << 1) /* Auto CTS flow ctrl enable */ |
| #define MAX3107_FLOWCTRL_GPIADDR_BIT (1 << 2) /* Enables that GPIO inputs |
| * are used in conjunction with |
| * XOFF2 for definition of |
| * special character */ |
| #define MAX3107_FLOWCTRL_SWFLOWEN_BIT (1 << 3) /* Auto SW flow ctrl enable */ |
| #define MAX3107_FLOWCTRL_SWFLOW0_BIT (1 << 4) /* SWFLOW bit 0 */ |
| #define MAX3107_FLOWCTRL_SWFLOW1_BIT (1 << 5) /* SWFLOW bit 1 |
| * |
| * SWFLOW bits 1 & 0 table: |
| * 00 -> no transmitter flow |
| * control |
| * 01 -> receiver compares |
| * XON2 and XOFF2 |
| * and controls |
| * transmitter |
| * 10 -> receiver compares |
| * XON1 and XOFF1 |
| * and controls |
| * transmitter |
| * 11 -> receiver compares |
| * XON1, XON2, XOFF1 and |
| * XOFF2 and controls |
| * transmitter |
| */ |
| #define MAX3107_FLOWCTRL_SWFLOW2_BIT (1 << 6) /* SWFLOW bit 2 */ |
| #define MAX3107_FLOWCTRL_SWFLOW3_BIT (1 << 7) /* SWFLOW bit 3 |
| * |
| * SWFLOW bits 3 & 2 table: |
| * 00 -> no received flow |
| * control |
| * 01 -> transmitter generates |
| * XON2 and XOFF2 |
| * 10 -> transmitter generates |
| * XON1 and XOFF1 |
| * 11 -> transmitter generates |
| * XON1, XON2, XOFF1 and |
| * XOFF2 |
| */ |
| |
| /* GPIO configuration register bits */ |
| #define MAX3107_GPIOCFG_GP0OUT_BIT (1 << 0) /* GPIO 0 output enable */ |
| #define MAX3107_GPIOCFG_GP1OUT_BIT (1 << 1) /* GPIO 1 output enable */ |
| #define MAX3107_GPIOCFG_GP2OUT_BIT (1 << 2) /* GPIO 2 output enable */ |
| #define MAX3107_GPIOCFG_GP3OUT_BIT (1 << 3) /* GPIO 3 output enable */ |
| #define MAX3107_GPIOCFG_GP0OD_BIT (1 << 4) /* GPIO 0 open-drain enable */ |
| #define MAX3107_GPIOCFG_GP1OD_BIT (1 << 5) /* GPIO 1 open-drain enable */ |
| #define MAX3107_GPIOCFG_GP2OD_BIT (1 << 6) /* GPIO 2 open-drain enable */ |
| #define MAX3107_GPIOCFG_GP3OD_BIT (1 << 7) /* GPIO 3 open-drain enable */ |
| |
| /* GPIO DATA register bits */ |
| #define MAX3107_GPIODATA_GP0OUT_BIT (1 << 0) /* GPIO 0 output value */ |
| #define MAX3107_GPIODATA_GP1OUT_BIT (1 << 1) /* GPIO 1 output value */ |
| #define MAX3107_GPIODATA_GP2OUT_BIT (1 << 2) /* GPIO 2 output value */ |
| #define MAX3107_GPIODATA_GP3OUT_BIT (1 << 3) /* GPIO 3 output value */ |
| #define MAX3107_GPIODATA_GP0IN_BIT (1 << 4) /* GPIO 0 input value */ |
| #define MAX3107_GPIODATA_GP1IN_BIT (1 << 5) /* GPIO 1 input value */ |
| #define MAX3107_GPIODATA_GP2IN_BIT (1 << 6) /* GPIO 2 input value */ |
| #define MAX3107_GPIODATA_GP3IN_BIT (1 << 7) /* GPIO 3 input value */ |
| |
| /* PLL configuration register masks */ |
| #define MAX3107_PLLCFG_PREDIV_MASK (0x003f) /* PLL predivision value */ |
| #define MAX3107_PLLCFG_PLLFACTOR_MASK (0x00c0) /* PLL multiplication factor */ |
| |
| /* Baud rate generator configuration register masks and bits */ |
| #define MAX3107_BRGCFG_FRACT_MASK (0x000f) /* Fractional portion of |
| * Baud rate generator divisor |
| */ |
| #define MAX3107_BRGCFG_2XMODE_BIT (1 << 4) /* Double baud rate */ |
| #define MAX3107_BRGCFG_4XMODE_BIT (1 << 5) /* Quadruple baud rate */ |
| #define MAX3107_BRGCFG_UNDEF6_BIT (1 << 6) /* Undefined/not used */ |
| #define MAX3107_BRGCFG_UNDEF7_BIT (1 << 7) /* Undefined/not used */ |
| |
| /* Clock source register bits */ |
| #define MAX3107_CLKSRC_INTOSC_BIT (1 << 0) /* Internal osc enable */ |
| #define MAX3107_CLKSRC_CRYST_BIT (1 << 1) /* Crystal osc enable */ |
| #define MAX3107_CLKSRC_PLL_BIT (1 << 2) /* PLL enable */ |
| #define MAX3107_CLKSRC_PLLBYP_BIT (1 << 3) /* PLL bypass */ |
| #define MAX3107_CLKSRC_EXTCLK_BIT (1 << 4) /* External clock enable */ |
| #define MAX3107_CLKSRC_UNDEF5_BIT (1 << 5) /* Undefined/not used */ |
| #define MAX3107_CLKSRC_UNDEF6_BIT (1 << 6) /* Undefined/not used */ |
| #define MAX3107_CLKSRC_CLK2RTS_BIT (1 << 7) /* Baud clk to RTS pin */ |
| |
| |
| /* HW definitions */ |
| #define MAX3107_RX_FIFO_SIZE 128 |
| #define MAX3107_TX_FIFO_SIZE 128 |
| #define MAX3107_REVID1 0x00a0 |
| #define MAX3107_REVID2 0x00a1 |
| |
| |
| /* Baud rate generator configuration values for external clock 13MHz */ |
| #define MAX3107_BRG13_B300 (0x0A9400 | 0x05) |
| #define MAX3107_BRG13_B600 (0x054A00 | 0x03) |
| #define MAX3107_BRG13_B1200 (0x02A500 | 0x01) |
| #define MAX3107_BRG13_B2400 (0x015200 | 0x09) |
| #define MAX3107_BRG13_B4800 (0x00A900 | 0x04) |
| #define MAX3107_BRG13_B9600 (0x005400 | 0x0A) |
| #define MAX3107_BRG13_B19200 (0x002A00 | 0x05) |
| #define MAX3107_BRG13_B38400 (0x001500 | 0x03) |
| #define MAX3107_BRG13_B57600 (0x000E00 | 0x02) |
| #define MAX3107_BRG13_B115200 (0x000700 | 0x01) |
| #define MAX3107_BRG13_B230400 (0x000300 | 0x08) |
| #define MAX3107_BRG13_B460800 (0x000100 | 0x0c) |
| #define MAX3107_BRG13_B921600 (0x000100 | 0x1c) |
| |
| /* Baud rate generator configuration values for external clock 26MHz */ |
| #define MAX3107_BRG26_B300 (0x152800 | 0x0A) |
| #define MAX3107_BRG26_B600 (0x0A9400 | 0x05) |
| #define MAX3107_BRG26_B1200 (0x054A00 | 0x03) |
| #define MAX3107_BRG26_B2400 (0x02A500 | 0x01) |
| #define MAX3107_BRG26_B4800 (0x015200 | 0x09) |
| #define MAX3107_BRG26_B9600 (0x00A900 | 0x04) |
| #define MAX3107_BRG26_B19200 (0x005400 | 0x0A) |
| #define MAX3107_BRG26_B38400 (0x002A00 | 0x05) |
| #define MAX3107_BRG26_B57600 (0x001C00 | 0x03) |
| #define MAX3107_BRG26_B115200 (0x000E00 | 0x02) |
| #define MAX3107_BRG26_B230400 (0x000700 | 0x01) |
| #define MAX3107_BRG26_B460800 (0x000300 | 0x08) |
| #define MAX3107_BRG26_B921600 (0x000100 | 0x0C) |
| |
| /* Baud rate generator configuration values for internal clock */ |
| #define MAX3107_BRG13_IB300 (0x008000 | 0x00) |
| #define MAX3107_BRG13_IB600 (0x004000 | 0x00) |
| #define MAX3107_BRG13_IB1200 (0x002000 | 0x00) |
| #define MAX3107_BRG13_IB2400 (0x001000 | 0x00) |
| #define MAX3107_BRG13_IB4800 (0x000800 | 0x00) |
| #define MAX3107_BRG13_IB9600 (0x000400 | 0x00) |
| #define MAX3107_BRG13_IB19200 (0x000200 | 0x00) |
| #define MAX3107_BRG13_IB38400 (0x000100 | 0x00) |
| #define MAX3107_BRG13_IB57600 (0x000000 | 0x0B) |
| #define MAX3107_BRG13_IB115200 (0x000000 | 0x05) |
| #define MAX3107_BRG13_IB230400 (0x000000 | 0x03) |
| #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; |
| |
| #if defined(CONFIG_GPIOLIB) |
| /* GPIO chip stucture */ |
| struct gpio_chip chip; |
| #endif |
| |
| /* 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 */ |
