serial: New serial driver MAX310X
This driver is a replacement for a MAX3107 driver with a lot of improvements and new features. The main differences from the old version: - Using the regmap. - Using devm_XXX-related functions. - The use of threaded IRQ with IRQF_ONESHOT flag allows the driver to the hardware that supports only level IRQ. - Improved error handling of serial port, improved FIFO handling, improved hardware & software flow control. - Advanced flags allows turn on RS-485 mode (Auto direction control). - Ability to load multiple instances of drivers. - Added support for MAX3108. - GPIO support. - Driver is quite ready for adding I2C support and support other ICs with compatible registers set (MAX3109, MAX14830). Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Shiyan
Greg Kroah-Hartman
parent
9574f36fb8
commit
f65444187a
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@ -257,12 +257,19 @@ config SERIAL_MAX3100
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help
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MAX3100 chip support
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config SERIAL_MAX3107
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tristate "MAX3107 support"
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config SERIAL_MAX310X
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bool "MAX310X support"
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depends on SPI
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select SERIAL_CORE
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select REGMAP_SPI if SPI
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default n
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help
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MAX3107 chip support
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This selects support for an advanced UART from Maxim (Dallas).
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Supported ICs are MAX3107, MAX3108.
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Each IC contains 128 words each of receive and transmit FIFO
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that can be controlled through I2C or high-speed SPI.
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Say Y here if you want to support this ICs.
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config SERIAL_DZ
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bool "DECstation DZ serial driver"
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@ -28,7 +28,7 @@ obj-$(CONFIG_SERIAL_BFIN) += bfin_uart.o
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obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
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obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
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obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
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obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
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obj-$(CONFIG_SERIAL_MAX310X) += max310x.o
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obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
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obj-$(CONFIG_SERIAL_MUX) += mux.o
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obj-$(CONFIG_SERIAL_68328) += 68328serial.o
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File diff suppressed because it is too large
Load Diff
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@ -1,441 +0,0 @@
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/*
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* max3107.h - spi uart protocol driver header for Maxim 3107
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*
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* Copyright (C) Aavamobile 2009
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* Based on serial_max3100.h by Christian Pellegrin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _MAX3107_H
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#define _MAX3107_H
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/* Serial error status definitions */
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#define MAX3107_PARITY_ERROR 1
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#define MAX3107_FRAME_ERROR 2
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#define MAX3107_OVERRUN_ERROR 4
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#define MAX3107_ALL_ERRORS (MAX3107_PARITY_ERROR | \
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MAX3107_FRAME_ERROR | \
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MAX3107_OVERRUN_ERROR)
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/* GPIO definitions */
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#define MAX3107_GPIO_BASE 88
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#define MAX3107_GPIO_COUNT 4
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/* GPIO connected to chip's reset pin */
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#define MAX3107_RESET_GPIO 87
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/* Chip reset delay */
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#define MAX3107_RESET_DELAY 10
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/* Chip wakeup delay */
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#define MAX3107_WAKEUP_DELAY 50
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/* Sleep mode definitions */
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#define MAX3107_DISABLE_FORCED_SLEEP 0
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#define MAX3107_ENABLE_FORCED_SLEEP 1
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#define MAX3107_DISABLE_AUTOSLEEP 2
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#define MAX3107_ENABLE_AUTOSLEEP 3
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/* Definitions for register access with SPI transfers
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*
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* SPI transfer format:
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*
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* Master to slave bits xzzzzzzzyyyyyyyy
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* Slave to master bits aaaaaaaabbbbbbbb
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*
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* where:
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* x = 0 for reads, 1 for writes
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* z = register address
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* y = new register value if write, 0 if read
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* a = unspecified
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* b = register value if read, unspecified if write
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*/
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/* SPI speed */
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#define MAX3107_SPI_SPEED (3125000 * 2)
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/* Write bit */
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#define MAX3107_WRITE_BIT (1 << 15)
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/* SPI TX data mask */
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#define MAX3107_SPI_RX_DATA_MASK (0x00ff)
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/* SPI RX data mask */
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#define MAX3107_SPI_TX_DATA_MASK (0x00ff)
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/* Register access masks */
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#define MAX3107_RHR_REG (0x0000) /* RX FIFO */
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#define MAX3107_THR_REG (0x0000) /* TX FIFO */
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#define MAX3107_IRQEN_REG (0x0100) /* IRQ enable */
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#define MAX3107_IRQSTS_REG (0x0200) /* IRQ status */
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#define MAX3107_LSR_IRQEN_REG (0x0300) /* LSR IRQ enable */
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#define MAX3107_LSR_IRQSTS_REG (0x0400) /* LSR IRQ status */
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#define MAX3107_SPCHR_IRQEN_REG (0x0500) /* Special char IRQ enable */
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#define MAX3107_SPCHR_IRQSTS_REG (0x0600) /* Special char IRQ status */
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#define MAX3107_STS_IRQEN_REG (0x0700) /* Status IRQ enable */
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#define MAX3107_STS_IRQSTS_REG (0x0800) /* Status IRQ status */
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#define MAX3107_MODE1_REG (0x0900) /* MODE1 */
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#define MAX3107_MODE2_REG (0x0a00) /* MODE2 */
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#define MAX3107_LCR_REG (0x0b00) /* LCR */
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#define MAX3107_RXTO_REG (0x0c00) /* RX timeout */
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#define MAX3107_HDPIXDELAY_REG (0x0d00) /* Auto transceiver delays */
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#define MAX3107_IRDA_REG (0x0e00) /* IRDA settings */
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#define MAX3107_FLOWLVL_REG (0x0f00) /* Flow control levels */
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#define MAX3107_FIFOTRIGLVL_REG (0x1000) /* FIFO IRQ trigger levels */
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#define MAX3107_TXFIFOLVL_REG (0x1100) /* TX FIFO level */
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#define MAX3107_RXFIFOLVL_REG (0x1200) /* RX FIFO level */
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#define MAX3107_FLOWCTRL_REG (0x1300) /* Flow control */
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#define MAX3107_XON1_REG (0x1400) /* XON1 character */
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#define MAX3107_XON2_REG (0x1500) /* XON2 character */
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#define MAX3107_XOFF1_REG (0x1600) /* XOFF1 character */
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#define MAX3107_XOFF2_REG (0x1700) /* XOFF2 character */
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#define MAX3107_GPIOCFG_REG (0x1800) /* GPIO config */
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#define MAX3107_GPIODATA_REG (0x1900) /* GPIO data */
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#define MAX3107_PLLCFG_REG (0x1a00) /* PLL config */
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#define MAX3107_BRGCFG_REG (0x1b00) /* Baud rate generator conf */
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#define MAX3107_BRGDIVLSB_REG (0x1c00) /* Baud rate divisor LSB */
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#define MAX3107_BRGDIVMSB_REG (0x1d00) /* Baud rate divisor MSB */
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#define MAX3107_CLKSRC_REG (0x1e00) /* Clock source */
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#define MAX3107_REVID_REG (0x1f00) /* Revision identification */
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/* IRQ register bits */
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#define MAX3107_IRQ_LSR_BIT (1 << 0) /* LSR interrupt */
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#define MAX3107_IRQ_SPCHR_BIT (1 << 1) /* Special char interrupt */
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#define MAX3107_IRQ_STS_BIT (1 << 2) /* Status interrupt */
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#define MAX3107_IRQ_RXFIFO_BIT (1 << 3) /* RX FIFO interrupt */
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#define MAX3107_IRQ_TXFIFO_BIT (1 << 4) /* TX FIFO interrupt */
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#define MAX3107_IRQ_TXEMPTY_BIT (1 << 5) /* TX FIFO empty interrupt */
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#define MAX3107_IRQ_RXEMPTY_BIT (1 << 6) /* RX FIFO empty interrupt */
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#define MAX3107_IRQ_CTS_BIT (1 << 7) /* CTS interrupt */
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/* LSR register bits */
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#define MAX3107_LSR_RXTO_BIT (1 << 0) /* RX timeout */
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#define MAX3107_LSR_RXOVR_BIT (1 << 1) /* RX overrun */
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#define MAX3107_LSR_RXPAR_BIT (1 << 2) /* RX parity error */
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#define MAX3107_LSR_FRERR_BIT (1 << 3) /* Frame error */
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#define MAX3107_LSR_RXBRK_BIT (1 << 4) /* RX break */
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#define MAX3107_LSR_RXNOISE_BIT (1 << 5) /* RX noise */
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#define MAX3107_LSR_UNDEF6_BIT (1 << 6) /* Undefined/not used */
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#define MAX3107_LSR_CTS_BIT (1 << 7) /* CTS pin state */
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/* Special character register bits */
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#define MAX3107_SPCHR_XON1_BIT (1 << 0) /* XON1 character */
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#define MAX3107_SPCHR_XON2_BIT (1 << 1) /* XON2 character */
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#define MAX3107_SPCHR_XOFF1_BIT (1 << 2) /* XOFF1 character */
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#define MAX3107_SPCHR_XOFF2_BIT (1 << 3) /* XOFF2 character */
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#define MAX3107_SPCHR_BREAK_BIT (1 << 4) /* RX break */
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#define MAX3107_SPCHR_MULTIDROP_BIT (1 << 5) /* 9-bit multidrop addr char */
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#define MAX3107_SPCHR_UNDEF6_BIT (1 << 6) /* Undefined/not used */
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#define MAX3107_SPCHR_UNDEF7_BIT (1 << 7) /* Undefined/not used */
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/* Status register bits */
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#define MAX3107_STS_GPIO0_BIT (1 << 0) /* GPIO 0 interrupt */
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#define MAX3107_STS_GPIO1_BIT (1 << 1) /* GPIO 1 interrupt */
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#define MAX3107_STS_GPIO2_BIT (1 << 2) /* GPIO 2 interrupt */
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#define MAX3107_STS_GPIO3_BIT (1 << 3) /* GPIO 3 interrupt */
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#define MAX3107_STS_UNDEF4_BIT (1 << 4) /* Undefined/not used */
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#define MAX3107_STS_CLKREADY_BIT (1 << 5) /* Clock ready */
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#define MAX3107_STS_SLEEP_BIT (1 << 6) /* Sleep interrupt */
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#define MAX3107_STS_UNDEF7_BIT (1 << 7) /* Undefined/not used */
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/* MODE1 register bits */
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#define MAX3107_MODE1_RXDIS_BIT (1 << 0) /* RX disable */
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#define MAX3107_MODE1_TXDIS_BIT (1 << 1) /* TX disable */
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#define MAX3107_MODE1_TXHIZ_BIT (1 << 2) /* TX pin three-state */
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#define MAX3107_MODE1_RTSHIZ_BIT (1 << 3) /* RTS pin three-state */
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#define MAX3107_MODE1_TRNSCVCTRL_BIT (1 << 4) /* Transceiver ctrl enable */
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#define MAX3107_MODE1_FORCESLEEP_BIT (1 << 5) /* Force sleep mode */
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#define MAX3107_MODE1_AUTOSLEEP_BIT (1 << 6) /* Auto sleep enable */
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#define MAX3107_MODE1_IRQSEL_BIT (1 << 7) /* IRQ pin enable */
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/* MODE2 register bits */
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#define MAX3107_MODE2_RST_BIT (1 << 0) /* Chip reset */
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#define MAX3107_MODE2_FIFORST_BIT (1 << 1) /* FIFO reset */
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#define MAX3107_MODE2_RXTRIGINV_BIT (1 << 2) /* RX FIFO INT invert */
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#define MAX3107_MODE2_RXEMPTINV_BIT (1 << 3) /* RX FIFO empty INT invert */
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#define MAX3107_MODE2_SPCHR_BIT (1 << 4) /* Special chr detect enable */
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#define MAX3107_MODE2_LOOPBACK_BIT (1 << 5) /* Internal loopback enable */
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#define MAX3107_MODE2_MULTIDROP_BIT (1 << 6) /* 9-bit multidrop enable */
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#define MAX3107_MODE2_ECHOSUPR_BIT (1 << 7) /* ECHO suppression enable */
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/* LCR register bits */
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#define MAX3107_LCR_LENGTH0_BIT (1 << 0) /* Word length bit 0 */
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#define MAX3107_LCR_LENGTH1_BIT (1 << 1) /* Word length bit 1
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*
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* Word length bits table:
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* 00 -> 5 bit words
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* 01 -> 6 bit words
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* 10 -> 7 bit words
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* 11 -> 8 bit words
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*/
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#define MAX3107_LCR_STOPLEN_BIT (1 << 2) /* STOP length bit
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*
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* STOP length bit table:
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* 0 -> 1 stop bit
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* 1 -> 1-1.5 stop bits if
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* word length is 5,
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* 2 stop bits otherwise
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*/
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#define MAX3107_LCR_PARITY_BIT (1 << 3) /* Parity bit enable */
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#define MAX3107_LCR_EVENPARITY_BIT (1 << 4) /* Even parity bit enable */
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#define MAX3107_LCR_FORCEPARITY_BIT (1 << 5) /* 9-bit multidrop parity */
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#define MAX3107_LCR_TXBREAK_BIT (1 << 6) /* TX break enable */
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#define MAX3107_LCR_RTS_BIT (1 << 7) /* RTS pin control */
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#define MAX3107_LCR_WORD_LEN_5 (0x0000)
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#define MAX3107_LCR_WORD_LEN_6 (0x0001)
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#define MAX3107_LCR_WORD_LEN_7 (0x0002)
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#define MAX3107_LCR_WORD_LEN_8 (0x0003)
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/* IRDA register bits */
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#define MAX3107_IRDA_IRDAEN_BIT (1 << 0) /* IRDA mode enable */
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#define MAX3107_IRDA_SIR_BIT (1 << 1) /* SIR mode enable */
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#define MAX3107_IRDA_SHORTIR_BIT (1 << 2) /* Short SIR mode enable */
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#define MAX3107_IRDA_MIR_BIT (1 << 3) /* MIR mode enable */
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#define MAX3107_IRDA_RXINV_BIT (1 << 4) /* RX logic inversion enable */
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#define MAX3107_IRDA_TXINV_BIT (1 << 5) /* TX logic inversion enable */
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#define MAX3107_IRDA_UNDEF6_BIT (1 << 6) /* Undefined/not used */
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#define MAX3107_IRDA_UNDEF7_BIT (1 << 7) /* Undefined/not used */
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/* Flow control trigger level register masks */
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#define MAX3107_FLOWLVL_HALT_MASK (0x000f) /* Flow control halt level */
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#define MAX3107_FLOWLVL_RES_MASK (0x00f0) /* Flow control resume level */
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#define MAX3107_FLOWLVL_HALT(words) ((words/8) & 0x000f)
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#define MAX3107_FLOWLVL_RES(words) (((words/8) & 0x000f) << 4)
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/* FIFO interrupt trigger level register masks */
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#define MAX3107_FIFOTRIGLVL_TX_MASK (0x000f) /* TX FIFO trigger level */
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#define MAX3107_FIFOTRIGLVL_RX_MASK (0x00f0) /* RX FIFO trigger level */
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#define MAX3107_FIFOTRIGLVL_TX(words) ((words/8) & 0x000f)
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#define MAX3107_FIFOTRIGLVL_RX(words) (((words/8) & 0x000f) << 4)
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/* Flow control register bits */
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#define MAX3107_FLOWCTRL_AUTORTS_BIT (1 << 0) /* Auto RTS flow ctrl enable */
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#define MAX3107_FLOWCTRL_AUTOCTS_BIT (1 << 1) /* Auto CTS flow ctrl enable */
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#define MAX3107_FLOWCTRL_GPIADDR_BIT (1 << 2) /* Enables that GPIO inputs
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* are used in conjunction with
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* XOFF2 for definition of
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* special character */
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#define MAX3107_FLOWCTRL_SWFLOWEN_BIT (1 << 3) /* Auto SW flow ctrl enable */
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#define MAX3107_FLOWCTRL_SWFLOW0_BIT (1 << 4) /* SWFLOW bit 0 */
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#define MAX3107_FLOWCTRL_SWFLOW1_BIT (1 << 5) /* SWFLOW bit 1
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*
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* SWFLOW bits 1 & 0 table:
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* 00 -> no transmitter flow
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* control
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* 01 -> receiver compares
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* XON2 and XOFF2
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* and controls
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* transmitter
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* 10 -> receiver compares
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* XON1 and XOFF1
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* and controls
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* transmitter
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* 11 -> receiver compares
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* XON1, XON2, XOFF1 and
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* XOFF2 and controls
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* transmitter
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*/
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#define MAX3107_FLOWCTRL_SWFLOW2_BIT (1 << 6) /* SWFLOW bit 2 */
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#define MAX3107_FLOWCTRL_SWFLOW3_BIT (1 << 7) /* SWFLOW bit 3
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*
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* SWFLOW bits 3 & 2 table:
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* 00 -> no received flow
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* control
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* 01 -> transmitter generates
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* XON2 and XOFF2
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* 10 -> transmitter generates
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* XON1 and XOFF1
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* 11 -> transmitter generates
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* XON1, XON2, XOFF1 and
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* XOFF2
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*/
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/* GPIO configuration register bits */
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#define MAX3107_GPIOCFG_GP0OUT_BIT (1 << 0) /* GPIO 0 output enable */
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#define MAX3107_GPIOCFG_GP1OUT_BIT (1 << 1) /* GPIO 1 output enable */
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#define MAX3107_GPIOCFG_GP2OUT_BIT (1 << 2) /* GPIO 2 output enable */
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#define MAX3107_GPIOCFG_GP3OUT_BIT (1 << 3) /* GPIO 3 output enable */
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#define MAX3107_GPIOCFG_GP0OD_BIT (1 << 4) /* GPIO 0 open-drain enable */
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#define MAX3107_GPIOCFG_GP1OD_BIT (1 << 5) /* GPIO 1 open-drain enable */
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#define MAX3107_GPIOCFG_GP2OD_BIT (1 << 6) /* GPIO 2 open-drain enable */
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#define MAX3107_GPIOCFG_GP3OD_BIT (1 << 7) /* GPIO 3 open-drain enable */
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/* GPIO DATA register bits */
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#define MAX3107_GPIODATA_GP0OUT_BIT (1 << 0) /* GPIO 0 output value */
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#define MAX3107_GPIODATA_GP1OUT_BIT (1 << 1) /* GPIO 1 output value */
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#define MAX3107_GPIODATA_GP2OUT_BIT (1 << 2) /* GPIO 2 output value */
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#define MAX3107_GPIODATA_GP3OUT_BIT (1 << 3) /* GPIO 3 output value */
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#define MAX3107_GPIODATA_GP0IN_BIT (1 << 4) /* GPIO 0 input value */
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#define MAX3107_GPIODATA_GP1IN_BIT (1 << 5) /* GPIO 1 input value */
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#define MAX3107_GPIODATA_GP2IN_BIT (1 << 6) /* GPIO 2 input value */
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#define MAX3107_GPIODATA_GP3IN_BIT (1 << 7) /* GPIO 3 input value */
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/* PLL configuration register masks */
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#define MAX3107_PLLCFG_PREDIV_MASK (0x003f) /* PLL predivision value */
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#define MAX3107_PLLCFG_PLLFACTOR_MASK (0x00c0) /* PLL multiplication factor */
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/* Baud rate generator configuration register masks and bits */
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#define MAX3107_BRGCFG_FRACT_MASK (0x000f) /* Fractional portion of
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* Baud rate generator divisor
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*/
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#define MAX3107_BRGCFG_2XMODE_BIT (1 << 4) /* Double baud rate */
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#define MAX3107_BRGCFG_4XMODE_BIT (1 << 5) /* Quadruple baud rate */
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#define MAX3107_BRGCFG_UNDEF6_BIT (1 << 6) /* Undefined/not used */
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#define MAX3107_BRGCFG_UNDEF7_BIT (1 << 7) /* Undefined/not used */
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/* Clock source register bits */
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#define MAX3107_CLKSRC_INTOSC_BIT (1 << 0) /* Internal osc enable */
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#define MAX3107_CLKSRC_CRYST_BIT (1 << 1) /* Crystal osc enable */
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#define MAX3107_CLKSRC_PLL_BIT (1 << 2) /* PLL enable */
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#define MAX3107_CLKSRC_PLLBYP_BIT (1 << 3) /* PLL bypass */
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#define MAX3107_CLKSRC_EXTCLK_BIT (1 << 4) /* External clock enable */
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#define MAX3107_CLKSRC_UNDEF5_BIT (1 << 5) /* Undefined/not used */
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#define MAX3107_CLKSRC_UNDEF6_BIT (1 << 6) /* Undefined/not used */
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#define MAX3107_CLKSRC_CLK2RTS_BIT (1 << 7) /* Baud clk to RTS pin */
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/* HW definitions */
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||||
#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 structure */
|
||||
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 */
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,67 @@
|
|||
/*
|
||||
* Maxim (Dallas) MAX3107/8 serial driver
|
||||
*
|
||||
* Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
|
||||
*
|
||||
* Based on max3100.c, by Christian Pellegrin <chripell@evolware.org>
|
||||
* Based on max3110.c, by Feng Tang <feng.tang@intel.com>
|
||||
* Based on max3107.c, by Aavamobile
|
||||
*
|
||||
* 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 _MAX310X_H_
|
||||
#define _MAX310X_H_
|
||||
|
||||
/*
|
||||
* Example board initialization data:
|
||||
*
|
||||
* static struct max310x_pdata max3107_pdata = {
|
||||
* .driver_flags = MAX310X_EXT_CLK,
|
||||
* .uart_flags[0] = MAX310X_ECHO_SUPRESS | MAX310X_AUTO_DIR_CTRL,
|
||||
* .frequency = 3686400,
|
||||
* .gpio_base = -1,
|
||||
* };
|
||||
*
|
||||
* static struct spi_board_info spi_device_max3107[] = {
|
||||
* {
|
||||
* .modalias = "max3107",
|
||||
* .irq = IRQ_EINT3,
|
||||
* .bus_num = 1,
|
||||
* .chip_select = 1,
|
||||
* .platform_data = &max3107_pdata,
|
||||
* },
|
||||
* };
|
||||
*/
|
||||
|
||||
#define MAX310X_MAX_UARTS 1
|
||||
|
||||
/* MAX310X platform data structure */
|
||||
struct max310x_pdata {
|
||||
/* Flags global to driver */
|
||||
const u8 driver_flags:2;
|
||||
#define MAX310X_EXT_CLK (0x00000001) /* External clock enable */
|
||||
#define MAX310X_AUTOSLEEP (0x00000002) /* Enable AutoSleep mode */
|
||||
/* Flags global to UART port */
|
||||
const u8 uart_flags[MAX310X_MAX_UARTS];
|
||||
#define MAX310X_LOOPBACK (0x00000001) /* Loopback mode enable */
|
||||
#define MAX310X_ECHO_SUPRESS (0x00000002) /* Enable echo supress */
|
||||
#define MAX310X_AUTO_DIR_CTRL (0x00000004) /* Enable Auto direction
|
||||
* control (RS-485)
|
||||
*/
|
||||
/* Frequency (extrenal clock or crystal) */
|
||||
const int frequency;
|
||||
/* GPIO base number (can be negative) */
|
||||
const int gpio_base;
|
||||
/* Called during startup */
|
||||
void (*init)(void);
|
||||
/* Called before finish */
|
||||
void (*exit)(void);
|
||||
/* Suspend callback */
|
||||
void (*suspend)(int do_suspend);
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -193,8 +193,8 @@
|
|||
/* SH-SCI */
|
||||
#define PORT_SCIFB 93
|
||||
|
||||
/* MAX3107 */
|
||||
#define PORT_MAX3107 94
|
||||
/* MAX310X */
|
||||
#define PORT_MAX310X 94
|
||||
|
||||
/* High Speed UART for Medfield */
|
||||
#define PORT_MFD 95
|
||||
|
|
|
|||
Reference in New Issue