From f65444187a66bf54af32a10902877dd0326456d1 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Mon, 6 Aug 2012 19:42:32 +0400 Subject: 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 Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/max310x.h | 67 +++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 include/linux/platform_data/max310x.h (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/max310x.h b/include/linux/platform_data/max310x.h new file mode 100644 index 000000000000..91648bf5fc5c --- /dev/null +++ b/include/linux/platform_data/max310x.h @@ -0,0 +1,67 @@ +/* + * Maxim (Dallas) MAX3107/8 serial driver + * + * Copyright (C) 2012 Alexander Shiyan + * + * Based on max3100.c, by Christian Pellegrin + * Based on max3110.c, by Feng Tang + * 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 -- cgit v1.2.3 From 1d65c0b12656d9f3bc29bb19f2d7441832433f03 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 25 Aug 2012 19:24:19 +0400 Subject: serial: New serial driver SCCNXP This driver is a replacement for a SC26XX driver with a lot of improvements and new features. The main differences from the SC26XX driver: - Removed dependency on MIPS. Driver can be used on any platform. - Added support for SCC2681, SCC2691, SCC2692, SC28L91, SC28L92, SC28L202, SCC68681 and SCC68692 ICs. - Using devm_-related functions. - Improved error handling of serial port, improved FIFO handling. - Ability to load multiple instances of drivers. To avoid the possibility of regression, driver SC26XX left in the system to confirm the stability of the driver on platforms where it is being used. Signed-off-by: Alexander Shiyan Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/sccnxp.h | 93 ++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 include/linux/platform_data/sccnxp.h (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/sccnxp.h b/include/linux/platform_data/sccnxp.h new file mode 100644 index 000000000000..7311ccd3217f --- /dev/null +++ b/include/linux/platform_data/sccnxp.h @@ -0,0 +1,93 @@ +/* + * NXP (Philips) SCC+++(SCN+++) serial driver + * + * Copyright (C) 2012 Alexander Shiyan + * + * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de) + * + * 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 __SCCNXP_H +#define __SCCNXP_H + +#define SCCNXP_MAX_UARTS 2 + +/* Output lines */ +#define LINE_OP0 1 +#define LINE_OP1 2 +#define LINE_OP2 3 +#define LINE_OP3 4 +#define LINE_OP4 5 +#define LINE_OP5 6 +#define LINE_OP6 7 +#define LINE_OP7 8 + +/* Input lines */ +#define LINE_IP0 9 +#define LINE_IP1 10 +#define LINE_IP2 11 +#define LINE_IP3 12 +#define LINE_IP4 13 +#define LINE_IP5 14 +#define LINE_IP6 15 + +/* Signals */ +#define DTR_OP 0 /* DTR */ +#define RTS_OP 4 /* RTS */ +#define DSR_IP 8 /* DSR */ +#define CTS_IP 12 /* CTS */ +#define DCD_IP 16 /* DCD */ +#define RNG_IP 20 /* RNG */ + +#define DIR_OP 24 /* Special signal for control RS-485. + * Goes high when transmit, + * then goes low. + */ + +/* Routing control signal 'sig' to line 'line' */ +#define MCTRL_SIG(sig, line) ((line) << (sig)) + +/* + * Example board initialization data: + * + * static struct resource sc2892_resources[] = { + * DEFINE_RES_MEM(UART_PHYS_START, 0x10), + * DEFINE_RES_IRQ(IRQ_EXT2), + * }; + * + * static struct sccnxp_pdata sc2892_info = { + * .frequency = 3686400, + * .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0), + * .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1), + * }; + * + * static struct platform_device sc2892 = { + * .name = "sc2892", + * .id = -1, + * .resource = sc2892_resources, + * .num_resources = ARRAY_SIZE(sc2892_resources), + * .dev = { + * .platform_data = &sc2892_info, + * }, + * }; + */ + +/* SCCNXP platform data structure */ +struct sccnxp_pdata { + /* Frequency (extrenal clock or crystal) */ + int frequency; + /* Shift for A0 line */ + const u8 reg_shift; + /* Modem control lines configuration */ + const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; + /* Called during startup */ + void (*init)(void); + /* Called before finish */ + void (*exit)(void); +}; + +#endif -- cgit v1.2.3