diff options
Diffstat (limited to 'target/linux/coldfire/patches/005-Add-serial-driver-and-irda-driver-support-for-MCF544.patch')
| -rw-r--r-- | target/linux/coldfire/patches/005-Add-serial-driver-and-irda-driver-support-for-MCF544.patch | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/target/linux/coldfire/patches/005-Add-serial-driver-and-irda-driver-support-for-MCF544.patch b/target/linux/coldfire/patches/005-Add-serial-driver-and-irda-driver-support-for-MCF544.patch new file mode 100644 index 000000000..1ccbb123b --- /dev/null +++ b/target/linux/coldfire/patches/005-Add-serial-driver-and-irda-driver-support-for-MCF544.patch @@ -0,0 +1,200 @@ +From 5c37079957c5e5555aa8284a879f8cc44fa8eb25 Mon Sep 17 00:00:00 2001 +From: Alison Wang <b18965@freescale.com> +Date: Thu, 4 Aug 2011 09:59:39 +0800 +Subject: [PATCH 05/52] Add serial driver and irda driver support for MCF5445x and MCF547x/MCF548x + +Add common serial driver for MCF5445x and MCF547x/MCF548x. +Also add irda support for MCF547x/MCF548x. + +Signed-off-by: Alison Wang <b18965@freescale.com> +--- + drivers/tty/serial/Kconfig | 20 ++++++++++ + drivers/tty/serial/mcf.c | 87 ++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 107 insertions(+), 0 deletions(-) + +--- a/drivers/tty/serial/Kconfig ++++ b/drivers/tty/serial/Kconfig +@@ -1027,6 +1027,26 @@ config SERIAL_68328_RTS_CTS + bool "Support RTS/CTS on 68328 serial port" + depends on SERIAL_68328 + ++config SERIAL_COLDFIRE_IRDA ++ bool "ColdFire IRDA support" ++ depends on SERIAL_MCF ++ help ++ This driver supports IrDA on the ColdFire platform, ++ such as MCF547x and MCF548x. ++ ++ Say Y here if you want to use IrDA 1.1 SIR mode. ++ ++config SERIAL_COLDFIRE_EDMA ++ bool "ColdFire serial EDMA support" ++ depends on SERIAL_MCF ++ default n ++ help ++ Enables Enhanced Direct Memory Access(eDMA) in the Coldfire ++ serial driver. ++ ++ Say Y here if you want to use DMA processing of transmit ++ and receive data for the serial driver. ++ + config SERIAL_MCF + bool "Coldfire serial support" + depends on COLDFIRE +--- a/drivers/tty/serial/mcf.c ++++ b/drivers/tty/serial/mcf.c +@@ -4,6 +4,10 @@ + * mcf.c -- Freescale ColdFire UART driver + * + * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com> ++ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved. ++ * Jason Jin Jason.Jin@freescale.com ++ * Shrek Wu B16972@freescale.com ++ * Chengju Cai b22600@freescale.com + * + * 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 +@@ -23,9 +27,11 @@ + #include <linux/serial.h> + #include <linux/serial_core.h> + #include <linux/io.h> ++#include <linux/delay.h> + #include <asm/coldfire.h> + #include <asm/mcfsim.h> + #include <asm/mcfuart.h> ++#include <asm/m5485psc.h> + #include <asm/nettel.h> + + /****************************************************************************/ +@@ -46,6 +52,10 @@ + #define mcf_setppdtr(p, v) do { } while (0) + #endif + ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++#define SERIAL_IRDA_LINE (2) ++#endif ++ + /****************************************************************************/ + + /* +@@ -101,6 +111,15 @@ static void mcf_start_tx(struct uart_por + { + struct mcf_uart *pp = container_of(port, struct mcf_uart, port); + ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ if (port->line == SERIAL_IRDA_LINE) { ++ /* Disable IRDA receiver*/ ++ writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR); ++ writeb(MCFUART_UCR_CMDRESETTX, port->membase + MCFUART_UCR); ++ ++ writeb(MCFUART_UCR_TXENABLE, port->membase + MCFUART_UCR); ++ } ++#endif + pp->imr |= MCFUART_UIR_TXREADY; + writeb(pp->imr, port->membase + MCFUART_UIMR); + } +@@ -154,6 +173,30 @@ static int mcf_startup(struct uart_port + + spin_lock_irqsave(&port->lock, flags); + ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ if (port->line == SERIAL_IRDA_LINE) { ++ /* Put PSC in IrDA mode */ ++ MCF_PSC_SICR(port->line) = MCF_PSC_SICR_SIM_SIR; ++ ++ /* Set pulse width to 1.6 uS */ ++ MCF_PSC_IRSDR(port->line) = (uint8_t) ++ (16 * (CONFIG_MCFCLK / 10000000)); ++ MCF_PSC_IRCR1(port->line) = MCF_PSC_IRCR1_SPUL; ++ MCF_PSC_IRCR2(port->line) = 0; ++ ++ /* Enable RTS to send */ ++ MCF_PSC_OPSET(port->line) = MCF_PSC_OPSET_RTS; ++ ++ /* Setup FIFO Alarms */ ++ MCF_PSC_RFAR(port->line) = MCF_PSC_RFAR_ALARM(248); ++ MCF_PSC_TFAR(port->line) = MCF_PSC_TFAR_ALARM(248); ++ ++ MCF_PSC_RFCR(port->line) = MCF_PSC_RFCR_FRMEN ++ | MCF_PSC_RFCR_GR(4); ++ MCF_PSC_TFCR(port->line) = MCF_PSC_TFCR_FRMEN ++ | MCF_PSC_RFCR_GR(4); ++ } ++#endif + /* Reset UART, get it into known state... */ + writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR); + writeb(MCFUART_UCR_CMDRESETTX, port->membase + MCFUART_UCR); +@@ -177,7 +220,17 @@ static void mcf_shutdown(struct uart_por + { + struct mcf_uart *pp = container_of(port, struct mcf_uart, port); + unsigned long flags; ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ unsigned long delay_counter = 0; ++#endif + ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ while (!((readb(port->membase + MCFUART_USR)) & MCFUART_USR_TXEMPTY)) { ++ if (delay_counter++ > 25000) ++ break; ++ udelay(10); ++ } ++#endif + spin_lock_irqsave(&port->lock, flags); + + /* Disable all interrupts now */ +@@ -202,7 +255,14 @@ static void mcf_set_termios(struct uart_ + unsigned int baudfr; + #endif + unsigned char mr1, mr2; ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ int i = 0; /* hush GCC */ ++#endif + ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ while (i++ < 35000) ++ udelay(1); ++#endif + baud = uart_get_baud_rate(port, termios, old, 0, 230400); + #if defined(CONFIG_M5272) + baudclk = (MCF_BUSCLK / baud) / 32; +@@ -331,6 +391,23 @@ static void mcf_tx_chars(struct mcf_uart + while (readb(port->membase + MCFUART_USR) & MCFUART_USR_TXREADY) { + if (xmit->head == xmit->tail) + break; ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ if (port->line == SERIAL_IRDA_LINE) { ++ while (!((readb(port->membase + MCFUART_USR))\ ++ & MCFUART_USR_TXEMPTY)) ++ ; ++ /* delay for settle */ ++#if defined(CONFIG_M548X) ++ udelay(1); ++#elif defined(CONFIG_M547X) ++ udelay(2); ++#else ++ int i = 0; ++ while (i++ < 25000) ++ udelay(1); ++#endif ++ } ++#endif + writeb(xmit->buf[xmit->tail], port->membase + MCFUART_UTB); + xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE -1); + port->icount.tx++; +@@ -340,6 +417,16 @@ static void mcf_tx_chars(struct mcf_uart + uart_write_wakeup(port); + + if (xmit->head == xmit->tail) { ++#ifdef CONFIG_SERIAL_COLDFIRE_IRDA ++ if (port->line == SERIAL_IRDA_LINE) { ++ /* Enable receiver for IRDA */ ++ writeb(MCFUART_UCR_CMDRESETRX,\ ++ port->membase + MCFUART_UCR); ++ /* reset RX */ ++ writeb(MCFUART_UCR_TXENABLE | MCFUART_UCR_RXENABLE,\ ++ port->membase + MCFUART_UCR); ++ } ++#endif + pp->imr &= ~MCFUART_UIR_TXREADY; + writeb(pp->imr, port->membase + MCFUART_UIMR); + } |