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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.patch789
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 b4c51f150d..0000000000
--- 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>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 08:17:17 +0000