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@@ -1,678 +0,0 @@
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-/*
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- * Atheros AR933X SoC built-in UART driver
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- *
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- * Copyright (C) 2011 Gabor Juhos <[email protected]>
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- *
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- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published
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- * by the Free Software Foundation.
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- */
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-
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-#include <linux/module.h>
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-#include <linux/ioport.h>
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-#include <linux/init.h>
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-#include <linux/console.h>
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-#include <linux/sysrq.h>
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-#include <linux/delay.h>
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-#include <linux/platform_device.h>
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-#include <linux/tty.h>
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-#include <linux/tty_flip.h>
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-#include <linux/serial_core.h>
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-#include <linux/serial.h>
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-#include <linux/slab.h>
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-#include <linux/io.h>
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-#include <linux/irq.h>
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-
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-#include <asm/mach-ar71xx/ar933x_uart.h>
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-#include <asm/mach-ar71xx/ar933x_uart_platform.h>
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-
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-#define DRIVER_NAME "ar933x-uart"
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-
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-#define AR933X_DUMMY_STATUS_RD 0x01
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-
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-static struct uart_driver ar933x_uart_driver;
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-
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-struct ar933x_uart_port {
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- struct uart_port port;
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- unsigned int ier; /* shadow Interrupt Enable Register */
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-};
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-
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-static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
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- int offset)
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-{
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- return readl(up->port.membase + offset);
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-}
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-
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-static inline void ar933x_uart_write(struct ar933x_uart_port *up,
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- int offset, unsigned int value)
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-{
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- writel(value, up->port.membase + offset);
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-}
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-
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-static inline void ar933x_uart_rmw(struct ar933x_uart_port *up,
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- unsigned int offset,
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- unsigned int mask,
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- unsigned int val)
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-{
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- unsigned int t;
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-
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- t = ar933x_uart_read(up, offset);
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- t &= ~mask;
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- t |= val;
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- ar933x_uart_write(up, offset, t);
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-}
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-
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-static inline void ar933x_uart_rmw_set(struct ar933x_uart_port *up,
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- unsigned int offset,
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- unsigned int val)
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-{
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- ar933x_uart_rmw(up, offset, 0, val);
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-}
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-
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-static inline void ar933x_uart_rmw_clear(struct ar933x_uart_port *up,
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- unsigned int offset,
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- unsigned int val)
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-{
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- ar933x_uart_rmw(up, offset, val, 0);
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-}
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-
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-static inline void ar933x_uart_start_tx_interrupt(struct ar933x_uart_port *up)
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-{
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- up->ier |= AR933X_UART_INT_TX_EMPTY;
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- ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
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-}
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-
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-static inline void ar933x_uart_stop_tx_interrupt(struct ar933x_uart_port *up)
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-{
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- up->ier &= ~AR933X_UART_INT_TX_EMPTY;
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- ar933x_uart_write(up, AR933X_UART_INT_EN_REG,up->ier);
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-}
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-
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-static inline void ar933x_uart_putc(struct ar933x_uart_port *up, int ch)
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-{
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- unsigned int rdata;
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-
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- rdata = ch & AR933X_UART_DATA_TX_RX_MASK;
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- rdata |= AR933X_UART_DATA_TX_CSR;
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- ar933x_uart_write(up, AR933X_UART_DATA_REG, rdata);
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-}
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-
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-static unsigned int ar933x_uart_tx_empty(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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- unsigned long flags;
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- unsigned int rdata;
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-
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- spin_lock_irqsave(&up->port.lock, flags);
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- rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
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- spin_unlock_irqrestore(&up->port.lock, flags);
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-
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- return (rdata & AR933X_UART_DATA_TX_CSR) ? 0 : TIOCSER_TEMT;
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-}
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-
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-static unsigned int ar933x_uart_get_mctrl(struct uart_port *port)
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-{
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- return TIOCM_CAR;
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-}
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-
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-static void ar933x_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
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-{
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-}
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-
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-static void ar933x_uart_start_tx(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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-
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- ar933x_uart_start_tx_interrupt(up);
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-}
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-
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-static void ar933x_uart_stop_tx(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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-
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- ar933x_uart_stop_tx_interrupt(up);
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-}
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-
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-static void ar933x_uart_stop_rx(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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-
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- up->ier &= ~AR933X_UART_INT_RX_VALID;
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- ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
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-}
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-
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-static void ar933x_uart_break_ctl(struct uart_port *port, int break_state)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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- unsigned long flags;
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-
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- spin_lock_irqsave(&up->port.lock, flags);
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- if (break_state == -1)
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- ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
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- AR933X_UART_CS_TX_BREAK);
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- else
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- ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
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- AR933X_UART_CS_TX_BREAK);
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- spin_unlock_irqrestore(&up->port.lock, flags);
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-}
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-
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-static void ar933x_uart_enable_ms(struct uart_port *port)
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-{
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-}
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-
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-static void ar933x_uart_set_termios(struct uart_port *port,
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- struct ktermios *new,
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- struct ktermios *old)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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- unsigned int cs;
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- unsigned long flags;
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- unsigned int baud, scale;
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-
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- /* Only CS8 is supported */
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- new->c_cflag &= ~CSIZE;
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- new->c_cflag |= CS8;
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-
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- /* Only one stop bit is supported */
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- new->c_cflag &= ~CSTOPB;
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-
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- cs = 0;
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- if (new->c_cflag & PARENB) {
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- if (!(new->c_cflag & PARODD))
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- cs |= AR933X_UART_CS_PARITY_EVEN;
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- else
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- cs |= AR933X_UART_CS_PARITY_ODD;
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- } else {
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- cs |= AR933X_UART_CS_PARITY_NONE;
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- }
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-
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- /* Mark/space parity is not supported */
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- new->c_cflag &= ~CMSPAR;
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-
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- baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
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- scale = (port->uartclk / (16 * baud)) - 1;
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-
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- /*
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- * Ok, we're now changing the port state. Do it with
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- * interrupts disabled.
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- */
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- spin_lock_irqsave(&up->port.lock, flags);
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-
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- /* Update the per-port timeout. */
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- uart_update_timeout(port, new->c_cflag, baud);
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-
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- up->port.ignore_status_mask = 0;
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-
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- /* ignore all characters if CREAD is not set */
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- if ((new->c_cflag & CREAD) == 0)
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- up->port.ignore_status_mask |= AR933X_DUMMY_STATUS_RD;
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-
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- ar933x_uart_write(up, AR933X_UART_CLOCK_REG,
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- scale << AR933X_UART_CLOCK_SCALE_S | 8192);
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-
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- /* setup configuration register */
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- ar933x_uart_rmw(up, AR933X_UART_CS_REG, AR933X_UART_CS_PARITY_M, cs);
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-
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- /* enable host interrupt */
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- ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
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- AR933X_UART_CS_HOST_INT_EN);
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-
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- spin_unlock_irqrestore(&up->port.lock, flags);
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-
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- if (tty_termios_baud_rate(new))
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- tty_termios_encode_baud_rate(new, baud, baud);
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-}
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-
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-static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
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-{
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- struct tty_struct *tty = up->port.state->port.tty;
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- int max_count = 256;
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-
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- do {
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- unsigned int rdata;
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- unsigned char ch;
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-
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- rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
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- if ((rdata & AR933X_UART_DATA_RX_CSR) == 0)
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- break;
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-
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- /* remove the character from the FIFO */
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- ar933x_uart_write(up, AR933X_UART_DATA_REG,
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- AR933X_UART_DATA_RX_CSR);
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-
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- up->port.icount.rx++;
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- ch = rdata & AR933X_UART_DATA_TX_RX_MASK;
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-
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- if (uart_handle_sysrq_char(&up->port, ch))
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- continue;
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-
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- if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0)
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- tty_insert_flip_char(tty, ch, TTY_NORMAL);
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- } while (max_count-- > 0);
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-
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- tty_flip_buffer_push(tty);
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-}
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-
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-static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
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-{
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- struct circ_buf *xmit = &up->port.state->xmit;
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- int count;
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-
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- if (uart_tx_stopped(&up->port))
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- return;
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-
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- count = up->port.fifosize;
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- do {
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- unsigned int rdata;
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-
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- rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
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- if ((rdata & AR933X_UART_DATA_TX_CSR) == 0)
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- break;
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-
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- if (up->port.x_char) {
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- ar933x_uart_putc(up, up->port.x_char);
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- up->port.icount.tx++;
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- up->port.x_char = 0;
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- continue;
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- }
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-
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- if (uart_circ_empty(xmit))
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- break;
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-
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- ar933x_uart_putc(up, xmit->buf[xmit->tail]);
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-
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- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
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- up->port.icount.tx++;
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- } while (--count > 0);
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-
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- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
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- uart_write_wakeup(&up->port);
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-
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- if (!uart_circ_empty(xmit))
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- ar933x_uart_start_tx_interrupt(up);
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-}
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-
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-static irqreturn_t ar933x_uart_interrupt(int irq, void *dev_id)
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-{
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- struct ar933x_uart_port *up = dev_id;
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- unsigned int status;
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-
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- status = ar933x_uart_read(up, AR933X_UART_CS_REG);
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- if ((status & AR933X_UART_CS_HOST_INT) == 0)
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- return IRQ_NONE;
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-
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- spin_lock(&up->port.lock);
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-
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- status = ar933x_uart_read(up, AR933X_UART_INT_REG);
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- status &= ar933x_uart_read(up, AR933X_UART_INT_EN_REG);
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-
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- if (status & AR933X_UART_INT_RX_VALID) {
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- ar933x_uart_write(up, AR933X_UART_INT_REG,
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- AR933X_UART_INT_RX_VALID);
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- ar933x_uart_rx_chars(up);
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- }
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-
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- if (status & AR933X_UART_INT_TX_EMPTY) {
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- ar933x_uart_write(up, AR933X_UART_INT_REG,
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- AR933X_UART_INT_TX_EMPTY);
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- ar933x_uart_stop_tx_interrupt(up);
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- ar933x_uart_tx_chars(up);
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- }
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-
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- spin_unlock(&up->port.lock);
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-
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- return IRQ_HANDLED;
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-}
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-
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-static int ar933x_uart_startup(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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- unsigned long flags;
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- int ret;
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-
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- ret = request_irq(up->port.irq, ar933x_uart_interrupt,
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- up->port.irqflags, dev_name(up->port.dev), up);
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- if (ret)
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- return ret;
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-
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- spin_lock_irqsave(&up->port.lock, flags);
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-
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- /* Enable HOST interrupts */
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- ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
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- AR933X_UART_CS_HOST_INT_EN);
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-
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- /* Enable RX interrupts */
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- up->ier = AR933X_UART_INT_RX_VALID;
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- ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
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-
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- spin_unlock_irqrestore(&up->port.lock, flags);
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-
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- return 0;
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-}
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-
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-static void ar933x_uart_shutdown(struct uart_port *port)
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-{
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- struct ar933x_uart_port *up = (struct ar933x_uart_port *) port;
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-
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- /* Disable all interrupts */
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- up->ier = 0;
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- ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
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-
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- /* Disable break condition */
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- ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
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- AR933X_UART_CS_TX_BREAK);
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-
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- free_irq(up->port.irq, up);
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-}
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-
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-static const char *ar933x_uart_type(struct uart_port *port)
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-{
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- return (port->type == PORT_AR933X) ? "AR933X UART" : NULL;
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-}
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-
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-static void ar933x_uart_release_port(struct uart_port *port)
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-{
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- /* Nothing to release ... */
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-}
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-
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-static int ar933x_uart_request_port(struct uart_port *port)
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-{
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- /* UARTs always present */
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- return 0;
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-}
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-
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-static void ar933x_uart_config_port(struct uart_port *port, int flags)
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-{
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- if (flags & UART_CONFIG_TYPE)
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- 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 <[email protected]>");
|
|
|
-MODULE_LICENSE("GPL v2");
|
|
|
-MODULE_ALIAS("platform:" DRIVER_NAME);
|
Gabor Juhos