diff options
author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-04-19 21:32:05 +0000 |
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committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-04-19 21:32:05 +0000 |
commit | f9f658a5304410c19382f082fe4efe98371f5ecb (patch) | |
tree | 71a1b0bcb5c85fadaf5851259f84c0f7ad14c8cd /target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch | |
parent | 7bc7a250f8da88affa2efa3db5e93c137f25069c (diff) |
ar71xx: nuke 3.2 support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31360 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch')
-rw-r--r-- | target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch | 789 |
1 files changed, 0 insertions, 789 deletions
diff --git a/target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch b/target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch deleted file mode 100644 index b4c51f150..000000000 --- a/target/linux/ar71xx/patches-3.2/014-SERIAL-AR933X-Add-driver-for-the-built-in-UART-of-th.patch +++ /dev/null @@ -1,789 +0,0 @@ -From 1de387abd06fb67aaa8e27a48e378ffd9aaddd74 Mon Sep 17 00:00:00 2001 -From: Gabor Juhos <juhosg@openwrt.org> -Date: Mon, 20 Jun 2011 19:26:11 +0200 -Subject: [PATCH 14/27] SERIAL: AR933X: Add driver for the built-in UART of the SoC - -This patch adds the driver for the built-in UART of the -Atheros AR933X SoCs. - -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> -Cc: linux-mips@linux-mips.org -Cc: Kathy Giori <kgiori@qca.qualcomm.com> -Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com> -Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> -Cc: linux-serial@vger.kernel.org -Patchwork: https://patchwork.linux-mips.org/patch/2526/ -Signed-off-by: Alan Cox <alan@linux.intel.com> -Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---- - .../include/asm/mach-ath79/ar933x_uart_platform.h | 18 + - drivers/tty/serial/Kconfig | 23 + - drivers/tty/serial/Makefile | 1 + - drivers/tty/serial/ar933x_uart.c | 688 ++++++++++++++++++++ - include/linux/serial_core.h | 4 + - 5 files changed, 734 insertions(+), 0 deletions(-) - create mode 100644 arch/mips/include/asm/mach-ath79/ar933x_uart_platform.h - create mode 100644 drivers/tty/serial/ar933x_uart.c - ---- /dev/null -+++ b/arch/mips/include/asm/mach-ath79/ar933x_uart_platform.h -@@ -0,0 +1,18 @@ -+/* -+ * Platform data definition for Atheros AR933X UART -+ * -+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License version 2 as published -+ * by the Free Software Foundation. -+ */ -+ -+#ifndef _AR933X_UART_PLATFORM_H -+#define _AR933X_UART_PLATFORM_H -+ -+struct ar933x_uart_platform_data { -+ unsigned uartclk; -+}; -+ -+#endif /* _AR933X_UART_PLATFORM_H */ ---- a/drivers/tty/serial/Kconfig -+++ b/drivers/tty/serial/Kconfig -@@ -1610,4 +1610,27 @@ config SERIAL_XILINX_PS_UART_CONSOLE - help - Enable a Xilinx PS UART port to be the system console. - -+config SERIAL_AR933X -+ bool "AR933X serial port support" -+ depends on SOC_AR933X -+ select SERIAL_CORE -+ help -+ If you have an Atheros AR933X SOC based board and want to use the -+ built-in UART of the SoC, say Y to this option. -+ -+config SERIAL_AR933X_CONSOLE -+ bool "Console on AR933X serial port" -+ depends on SERIAL_AR933X=y -+ select SERIAL_CORE_CONSOLE -+ help -+ Enable a built-in UART port of the AR933X to be the system console. -+ -+config SERIAL_AR933X_NR_UARTS -+ int "Maximum number of AR933X serial ports" -+ depends on SERIAL_AR933X -+ default "2" -+ help -+ Set this to the number of serial ports you want the driver -+ to support. -+ - endmenu ---- a/drivers/tty/serial/Makefile -+++ b/drivers/tty/serial/Makefile -@@ -94,3 +94,4 @@ obj-$(CONFIG_SERIAL_MSM_SMD) += msm_smd_ - obj-$(CONFIG_SERIAL_MXS_AUART) += mxs-auart.o - obj-$(CONFIG_SERIAL_LANTIQ) += lantiq.o - obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o -+obj-$(CONFIG_SERIAL_AR933X) += ar933x_uart.o ---- /dev/null -+++ b/drivers/tty/serial/ar933x_uart.c -@@ -0,0 +1,688 @@ -+/* -+ * Atheros AR933X SoC built-in UART driver -+ * -+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> -+ * -+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License version 2 as published -+ * by the Free Software Foundation. -+ */ -+ -+#include <linux/module.h> -+#include <linux/ioport.h> -+#include <linux/init.h> -+#include <linux/console.h> -+#include <linux/sysrq.h> -+#include <linux/delay.h> -+#include <linux/platform_device.h> -+#include <linux/tty.h> -+#include <linux/tty_flip.h> -+#include <linux/serial_core.h> -+#include <linux/serial.h> -+#include <linux/slab.h> -+#include <linux/io.h> -+#include <linux/irq.h> -+ -+#include <asm/mach-ath79/ar933x_uart.h> -+#include <asm/mach-ath79/ar933x_uart_platform.h> -+ -+#define DRIVER_NAME "ar933x-uart" -+ -+#define AR933X_DUMMY_STATUS_RD 0x01 -+ -+static struct uart_driver ar933x_uart_driver; -+ -+struct ar933x_uart_port { -+ struct uart_port port; -+ unsigned int ier; /* shadow Interrupt Enable Register */ -+}; -+ -+static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up, -+ int offset) -+{ -+ return readl(up->port.membase + offset); -+} -+ -+static inline void ar933x_uart_write(struct ar933x_uart_port *up, -+ int offset, unsigned int value) -+{ -+ writel(value, up->port.membase + offset); -+} -+ -+static inline void ar933x_uart_rmw(struct ar933x_uart_port *up, -+ unsigned int offset, -+ unsigned int mask, -+ unsigned int val) -+{ -+ unsigned int t; -+ -+ t = ar933x_uart_read(up, offset); -+ t &= ~mask; -+ t |= val; -+ ar933x_uart_write(up, offset, t); -+} -+ -+static inline void ar933x_uart_rmw_set(struct ar933x_uart_port *up, -+ unsigned int offset, -+ unsigned int val) -+{ -+ ar933x_uart_rmw(up, offset, 0, val); -+} -+ -+static inline void ar933x_uart_rmw_clear(struct ar933x_uart_port *up, -+ unsigned int offset, -+ unsigned int val) -+{ -+ ar933x_uart_rmw(up, offset, val, 0); -+} -+ -+static inline void ar933x_uart_start_tx_interrupt(struct ar933x_uart_port *up) -+{ -+ up->ier |= AR933X_UART_INT_TX_EMPTY; -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); -+} -+ -+static inline void ar933x_uart_stop_tx_interrupt(struct ar933x_uart_port *up) -+{ -+ up->ier &= ~AR933X_UART_INT_TX_EMPTY; -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); -+} -+ -+static inline void ar933x_uart_putc(struct ar933x_uart_port *up, int ch) -+{ -+ unsigned int rdata; -+ -+ rdata = ch & AR933X_UART_DATA_TX_RX_MASK; -+ rdata |= AR933X_UART_DATA_TX_CSR; -+ ar933x_uart_write(up, AR933X_UART_DATA_REG, rdata); -+} -+ -+static unsigned int ar933x_uart_tx_empty(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ unsigned long flags; -+ unsigned int rdata; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+ return (rdata & AR933X_UART_DATA_TX_CSR) ? 0 : TIOCSER_TEMT; -+} -+ -+static unsigned int ar933x_uart_get_mctrl(struct uart_port *port) -+{ -+ return TIOCM_CAR; -+} -+ -+static void ar933x_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) -+{ -+} -+ -+static void ar933x_uart_start_tx(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ -+ ar933x_uart_start_tx_interrupt(up); -+} -+ -+static void ar933x_uart_stop_tx(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ -+ ar933x_uart_stop_tx_interrupt(up); -+} -+ -+static void ar933x_uart_stop_rx(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ -+ up->ier &= ~AR933X_UART_INT_RX_VALID; -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); -+} -+ -+static void ar933x_uart_break_ctl(struct uart_port *port, int break_state) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ unsigned long flags; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ if (break_state == -1) -+ ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, -+ AR933X_UART_CS_TX_BREAK); -+ else -+ ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG, -+ AR933X_UART_CS_TX_BREAK); -+ spin_unlock_irqrestore(&up->port.lock, flags); -+} -+ -+static void ar933x_uart_enable_ms(struct uart_port *port) -+{ -+} -+ -+static void ar933x_uart_set_termios(struct uart_port *port, -+ struct ktermios *new, -+ struct ktermios *old) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ unsigned int cs; -+ unsigned long flags; -+ unsigned int baud, scale; -+ -+ /* Only CS8 is supported */ -+ new->c_cflag &= ~CSIZE; -+ new->c_cflag |= CS8; -+ -+ /* Only one stop bit is supported */ -+ new->c_cflag &= ~CSTOPB; -+ -+ cs = 0; -+ if (new->c_cflag & PARENB) { -+ if (!(new->c_cflag & PARODD)) -+ cs |= AR933X_UART_CS_PARITY_EVEN; -+ else -+ cs |= AR933X_UART_CS_PARITY_ODD; -+ } else { -+ cs |= AR933X_UART_CS_PARITY_NONE; -+ } -+ -+ /* Mark/space parity is not supported */ -+ new->c_cflag &= ~CMSPAR; -+ -+ baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16); -+ scale = (port->uartclk / (16 * baud)) - 1; -+ -+ /* -+ * Ok, we're now changing the port state. Do it with -+ * interrupts disabled. -+ */ -+ spin_lock_irqsave(&up->port.lock, flags); -+ -+ /* Update the per-port timeout. */ -+ uart_update_timeout(port, new->c_cflag, baud); -+ -+ up->port.ignore_status_mask = 0; -+ -+ /* ignore all characters if CREAD is not set */ -+ if ((new->c_cflag & CREAD) == 0) -+ up->port.ignore_status_mask |= AR933X_DUMMY_STATUS_RD; -+ -+ ar933x_uart_write(up, AR933X_UART_CLOCK_REG, -+ scale << AR933X_UART_CLOCK_SCALE_S | 8192); -+ -+ /* setup configuration register */ -+ ar933x_uart_rmw(up, AR933X_UART_CS_REG, AR933X_UART_CS_PARITY_M, cs); -+ -+ /* enable host interrupt */ -+ ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, -+ AR933X_UART_CS_HOST_INT_EN); -+ -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+ if (tty_termios_baud_rate(new)) -+ tty_termios_encode_baud_rate(new, baud, baud); -+} -+ -+static void ar933x_uart_rx_chars(struct ar933x_uart_port *up) -+{ -+ struct tty_struct *tty; -+ int max_count = 256; -+ -+ tty = tty_port_tty_get(&up->port.state->port); -+ do { -+ unsigned int rdata; -+ unsigned char ch; -+ -+ rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); -+ if ((rdata & AR933X_UART_DATA_RX_CSR) == 0) -+ break; -+ -+ /* remove the character from the FIFO */ -+ ar933x_uart_write(up, AR933X_UART_DATA_REG, -+ AR933X_UART_DATA_RX_CSR); -+ -+ if (!tty) { -+ /* discard the data if no tty available */ -+ continue; -+ } -+ -+ up->port.icount.rx++; -+ ch = rdata & AR933X_UART_DATA_TX_RX_MASK; -+ -+ if (uart_handle_sysrq_char(&up->port, ch)) -+ continue; -+ -+ if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0) -+ tty_insert_flip_char(tty, ch, TTY_NORMAL); -+ } while (max_count-- > 0); -+ -+ if (tty) { -+ tty_flip_buffer_push(tty); -+ tty_kref_put(tty); -+ } -+} -+ -+static void ar933x_uart_tx_chars(struct ar933x_uart_port *up) -+{ -+ struct circ_buf *xmit = &up->port.state->xmit; -+ int count; -+ -+ if (uart_tx_stopped(&up->port)) -+ return; -+ -+ count = up->port.fifosize; -+ do { -+ unsigned int rdata; -+ -+ rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); -+ if ((rdata & AR933X_UART_DATA_TX_CSR) == 0) -+ break; -+ -+ if (up->port.x_char) { -+ ar933x_uart_putc(up, up->port.x_char); -+ up->port.icount.tx++; -+ up->port.x_char = 0; -+ continue; -+ } -+ -+ if (uart_circ_empty(xmit)) -+ break; -+ -+ ar933x_uart_putc(up, xmit->buf[xmit->tail]); -+ -+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); -+ up->port.icount.tx++; -+ } while (--count > 0); -+ -+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) -+ uart_write_wakeup(&up->port); -+ -+ if (!uart_circ_empty(xmit)) -+ ar933x_uart_start_tx_interrupt(up); -+} -+ -+static irqreturn_t ar933x_uart_interrupt(int irq, void *dev_id) -+{ -+ struct ar933x_uart_port *up = dev_id; -+ unsigned int status; -+ -+ status = ar933x_uart_read(up, AR933X_UART_CS_REG); -+ if ((status & AR933X_UART_CS_HOST_INT) == 0) -+ return IRQ_NONE; -+ -+ spin_lock(&up->port.lock); -+ -+ status = ar933x_uart_read(up, AR933X_UART_INT_REG); -+ status &= ar933x_uart_read(up, AR933X_UART_INT_EN_REG); -+ -+ if (status & AR933X_UART_INT_RX_VALID) { -+ ar933x_uart_write(up, AR933X_UART_INT_REG, -+ AR933X_UART_INT_RX_VALID); -+ ar933x_uart_rx_chars(up); -+ } -+ -+ if (status & AR933X_UART_INT_TX_EMPTY) { -+ ar933x_uart_write(up, AR933X_UART_INT_REG, -+ AR933X_UART_INT_TX_EMPTY); -+ ar933x_uart_stop_tx_interrupt(up); -+ ar933x_uart_tx_chars(up); -+ } -+ -+ spin_unlock(&up->port.lock); -+ -+ return IRQ_HANDLED; -+} -+ -+static int ar933x_uart_startup(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ unsigned long flags; -+ int ret; -+ -+ ret = request_irq(up->port.irq, ar933x_uart_interrupt, -+ up->port.irqflags, dev_name(up->port.dev), up); -+ if (ret) -+ return ret; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ -+ /* Enable HOST interrupts */ -+ ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, -+ AR933X_UART_CS_HOST_INT_EN); -+ -+ /* Enable RX interrupts */ -+ up->ier = AR933X_UART_INT_RX_VALID; -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); -+ -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+ return 0; -+} -+ -+static void ar933x_uart_shutdown(struct uart_port *port) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ -+ /* Disable all interrupts */ -+ up->ier = 0; -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); -+ -+ /* Disable break condition */ -+ ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG, -+ AR933X_UART_CS_TX_BREAK); -+ -+ free_irq(up->port.irq, up); -+} -+ -+static const char *ar933x_uart_type(struct uart_port *port) -+{ -+ return (port->type == PORT_AR933X) ? "AR933X UART" : NULL; -+} -+ -+static void ar933x_uart_release_port(struct uart_port *port) -+{ -+ /* Nothing to release ... */ -+} -+ -+static int ar933x_uart_request_port(struct uart_port *port) -+{ -+ /* UARTs always present */ -+ return 0; -+} -+ -+static void ar933x_uart_config_port(struct uart_port *port, int flags) -+{ -+ if (flags & UART_CONFIG_TYPE) -+ port->type = PORT_AR933X; -+} -+ -+static int ar933x_uart_verify_port(struct uart_port *port, -+ struct serial_struct *ser) -+{ -+ if (ser->type != PORT_UNKNOWN && -+ ser->type != PORT_AR933X) -+ return -EINVAL; -+ -+ if (ser->irq < 0 || ser->irq >= NR_IRQS) -+ return -EINVAL; -+ -+ if (ser->baud_base < 28800) -+ return -EINVAL; -+ -+ return 0; -+} -+ -+static struct uart_ops ar933x_uart_ops = { -+ .tx_empty = ar933x_uart_tx_empty, -+ .set_mctrl = ar933x_uart_set_mctrl, -+ .get_mctrl = ar933x_uart_get_mctrl, -+ .stop_tx = ar933x_uart_stop_tx, -+ .start_tx = ar933x_uart_start_tx, -+ .stop_rx = ar933x_uart_stop_rx, -+ .enable_ms = ar933x_uart_enable_ms, -+ .break_ctl = ar933x_uart_break_ctl, -+ .startup = ar933x_uart_startup, -+ .shutdown = ar933x_uart_shutdown, -+ .set_termios = ar933x_uart_set_termios, -+ .type = ar933x_uart_type, -+ .release_port = ar933x_uart_release_port, -+ .request_port = ar933x_uart_request_port, -+ .config_port = ar933x_uart_config_port, -+ .verify_port = ar933x_uart_verify_port, -+}; -+ -+#ifdef CONFIG_SERIAL_AR933X_CONSOLE -+ -+static struct ar933x_uart_port * -+ar933x_console_ports[CONFIG_SERIAL_AR933X_NR_UARTS]; -+ -+static void ar933x_uart_wait_xmitr(struct ar933x_uart_port *up) -+{ -+ unsigned int status; -+ unsigned int timeout = 60000; -+ -+ /* Wait up to 60ms for the character(s) to be sent. */ -+ do { -+ status = ar933x_uart_read(up, AR933X_UART_DATA_REG); -+ if (--timeout == 0) -+ break; -+ udelay(1); -+ } while ((status & AR933X_UART_DATA_TX_CSR) == 0); -+} -+ -+static void ar933x_uart_console_putchar(struct uart_port *port, int ch) -+{ -+ struct ar933x_uart_port *up = (struct ar933x_uart_port *) port; -+ -+ ar933x_uart_wait_xmitr(up); -+ ar933x_uart_putc(up, ch); -+} -+ -+static void ar933x_uart_console_write(struct console *co, const char *s, -+ unsigned int count) -+{ -+ struct ar933x_uart_port *up = ar933x_console_ports[co->index]; -+ unsigned long flags; -+ unsigned int int_en; -+ int locked = 1; -+ -+ local_irq_save(flags); -+ -+ if (up->port.sysrq) -+ locked = 0; -+ else if (oops_in_progress) -+ locked = spin_trylock(&up->port.lock); -+ else -+ spin_lock(&up->port.lock); -+ -+ /* -+ * First save the IER then disable the interrupts -+ */ -+ int_en = ar933x_uart_read(up, AR933X_UART_INT_EN_REG); -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, 0); -+ -+ uart_console_write(&up->port, s, count, ar933x_uart_console_putchar); -+ -+ /* -+ * Finally, wait for transmitter to become empty -+ * and restore the IER -+ */ -+ ar933x_uart_wait_xmitr(up); -+ ar933x_uart_write(up, AR933X_UART_INT_EN_REG, int_en); -+ -+ ar933x_uart_write(up, AR933X_UART_INT_REG, AR933X_UART_INT_ALLINTS); -+ -+ if (locked) -+ spin_unlock(&up->port.lock); -+ -+ local_irq_restore(flags); -+} -+ -+static int ar933x_uart_console_setup(struct console *co, char *options) -+{ -+ struct ar933x_uart_port *up; -+ int baud = 115200; -+ int bits = 8; -+ int parity = 'n'; -+ int flow = 'n'; -+ -+ if (co->index < 0 || co->index >= CONFIG_SERIAL_AR933X_NR_UARTS) -+ return -EINVAL; -+ -+ up = ar933x_console_ports[co->index]; -+ if (!up) -+ return -ENODEV; -+ -+ if (options) -+ uart_parse_options(options, &baud, &parity, &bits, &flow); -+ -+ return uart_set_options(&up->port, co, baud, parity, bits, flow); -+} -+ -+static struct console ar933x_uart_console = { -+ .name = "ttyATH", -+ .write = ar933x_uart_console_write, -+ .device = uart_console_device, -+ .setup = ar933x_uart_console_setup, -+ .flags = CON_PRINTBUFFER, -+ .index = -1, -+ .data = &ar933x_uart_driver, -+}; -+ -+static void ar933x_uart_add_console_port(struct ar933x_uart_port *up) -+{ -+ ar933x_console_ports[up->port.line] = up; -+} -+ -+#define AR933X_SERIAL_CONSOLE (&ar933x_uart_console) -+ -+#else -+ -+static inline void ar933x_uart_add_console_port(struct ar933x_uart_port *up) {} -+ -+#define AR933X_SERIAL_CONSOLE NULL -+ -+#endif /* CONFIG_SERIAL_AR933X_CONSOLE */ -+ -+static struct uart_driver ar933x_uart_driver = { -+ .owner = THIS_MODULE, -+ .driver_name = DRIVER_NAME, -+ .dev_name = "ttyATH", -+ .nr = CONFIG_SERIAL_AR933X_NR_UARTS, -+ .cons = AR933X_SERIAL_CONSOLE, -+}; -+ -+static int __devinit ar933x_uart_probe(struct platform_device *pdev) -+{ -+ struct ar933x_uart_platform_data *pdata; -+ struct ar933x_uart_port *up; -+ struct uart_port *port; -+ struct resource *mem_res; -+ struct resource *irq_res; -+ int id; -+ int ret; -+ -+ pdata = pdev->dev.platform_data; -+ if (!pdata) -+ return -EINVAL; -+ -+ id = pdev->id; -+ if (id == -1) -+ id = 0; -+ -+ if (id > CONFIG_SERIAL_AR933X_NR_UARTS) -+ return -EINVAL; -+ -+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!mem_res) { -+ dev_err(&pdev->dev, "no MEM resource\n"); -+ return -EINVAL; -+ } -+ -+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); -+ if (!irq_res) { -+ dev_err(&pdev->dev, "no IRQ resource\n"); -+ return -EINVAL; -+ } -+ -+ up = kzalloc(sizeof(struct ar933x_uart_port), GFP_KERNEL); -+ if (!up) -+ return -ENOMEM; -+ -+ port = &up->port; -+ port->mapbase = mem_res->start; -+ -+ port->membase = ioremap(mem_res->start, AR933X_UART_REGS_SIZE); -+ if (!port->membase) { -+ ret = -ENOMEM; -+ goto err_free_up; -+ } -+ -+ port->line = id; -+ port->irq = irq_res->start; -+ port->dev = &pdev->dev; -+ port->type = PORT_AR933X; -+ port->iotype = UPIO_MEM32; -+ port->uartclk = pdata->uartclk; -+ -+ port->regshift = 2; -+ port->fifosize = AR933X_UART_FIFO_SIZE; -+ port->ops = &ar933x_uart_ops; -+ -+ ar933x_uart_add_console_port(up); -+ -+ ret = uart_add_one_port(&ar933x_uart_driver, &up->port); -+ if (ret) -+ goto err_unmap; -+ -+ platform_set_drvdata(pdev, up); -+ return 0; -+ -+err_unmap: -+ iounmap(up->port.membase); -+err_free_up: -+ kfree(up); -+ return ret; -+} -+ -+static int __devexit ar933x_uart_remove(struct platform_device *pdev) -+{ -+ struct ar933x_uart_port *up; -+ -+ up = platform_get_drvdata(pdev); -+ platform_set_drvdata(pdev, NULL); -+ -+ if (up) { -+ uart_remove_one_port(&ar933x_uart_driver, &up->port); -+ iounmap(up->port.membase); -+ kfree(up); -+ } -+ -+ return 0; -+} -+ -+static struct platform_driver ar933x_uart_platform_driver = { -+ .probe = ar933x_uart_probe, -+ .remove = __devexit_p(ar933x_uart_remove), -+ .driver = { -+ .name = DRIVER_NAME, -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+static int __init ar933x_uart_init(void) -+{ -+ int ret; -+ -+ ar933x_uart_driver.nr = CONFIG_SERIAL_AR933X_NR_UARTS; -+ ret = uart_register_driver(&ar933x_uart_driver); -+ if (ret) -+ goto err_out; -+ -+ ret = platform_driver_register(&ar933x_uart_platform_driver); -+ if (ret) -+ goto err_unregister_uart_driver; -+ -+ return 0; -+ -+err_unregister_uart_driver: -+ uart_unregister_driver(&ar933x_uart_driver); -+err_out: -+ return ret; -+} -+ -+static void __exit ar933x_uart_exit(void) -+{ -+ platform_driver_unregister(&ar933x_uart_platform_driver); -+ uart_unregister_driver(&ar933x_uart_driver); -+} -+ -+module_init(ar933x_uart_init); -+module_exit(ar933x_uart_exit); -+ -+MODULE_DESCRIPTION("Atheros AR933X UART driver"); -+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); -+MODULE_LICENSE("GPL v2"); -+MODULE_ALIAS("platform:" DRIVER_NAME); ---- a/include/linux/serial_core.h -+++ b/include/linux/serial_core.h -@@ -207,6 +207,10 @@ - /* Xilinx PSS UART */ - #define PORT_XUARTPS 98 - -+/* Atheros AR933X SoC */ -+#define PORT_AR933X 99 -+ -+ - #ifdef __KERNEL__ - - #include <linux/compiler.h> |