Blackfin Serial Driver: macro away the IER differences between processors
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
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56f8771302
commit
89bf6dc51a
5 changed files with 12 additions and 54 deletions
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@ -65,9 +65,6 @@ static void bfin_serial_stop_tx(struct uart_port *port)
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{
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struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
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struct circ_buf *xmit = &uart->port.info->xmit;
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#if !defined(CONFIG_BF54x) && !defined(CONFIG_SERIAL_BFIN_DMA)
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unsigned short ier;
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#endif
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while (!(UART_GET_LSR(uart) & TEMT))
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cpu_relax();
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@ -82,12 +79,8 @@ static void bfin_serial_stop_tx(struct uart_port *port)
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#ifdef CONFIG_BF54x
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/* Clear TFI bit */
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UART_PUT_LSR(uart, TFI);
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UART_CLEAR_IER(uart, ETBEI);
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#else
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ier = UART_GET_IER(uart);
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ier &= ~ETBEI;
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UART_PUT_IER(uart, ier);
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#endif
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UART_CLEAR_IER(uart, ETBEI);
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#endif
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}
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@ -102,14 +95,7 @@ static void bfin_serial_start_tx(struct uart_port *port)
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if (uart->tx_done)
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bfin_serial_dma_tx_chars(uart);
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#else
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#ifdef CONFIG_BF54x
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UART_SET_IER(uart, ETBEI);
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#else
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unsigned short ier;
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ier = UART_GET_IER(uart);
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ier |= ETBEI;
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UART_PUT_IER(uart, ier);
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#endif
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bfin_serial_tx_chars(uart);
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#endif
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}
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@ -120,21 +106,10 @@ static void bfin_serial_start_tx(struct uart_port *port)
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static void bfin_serial_stop_rx(struct uart_port *port)
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{
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struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
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#ifdef CONFIG_KGDB_UART
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if (uart->port.line != CONFIG_KGDB_UART_PORT) {
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#ifdef CONFIG_KGDB_UART
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if (uart->port.line != CONFIG_KGDB_UART_PORT)
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#endif
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#ifdef CONFIG_BF54x
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UART_CLEAR_IER(uart, ERBFI);
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#else
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unsigned short ier;
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ier = UART_GET_IER(uart);
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ier &= ~ERBFI;
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UART_PUT_IER(uart, ier);
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#endif
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#ifdef CONFIG_KGDB_UART
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}
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#endif
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}
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/*
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@ -208,9 +183,6 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
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struct tty_struct *tty = uart->port.info->tty;
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unsigned int status, ch, flg;
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static struct timeval anomaly_start = { .tv_sec = 0 };
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#ifdef CONFIG_KGDB_UART
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struct pt_regs *regs = get_irq_regs();
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#endif
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status = UART_GET_LSR(uart);
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UART_CLEAR_LSR(uart);
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@ -220,6 +192,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
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#ifdef CONFIG_KGDB_UART
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if (uart->port.line == CONFIG_KGDB_UART_PORT) {
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struct pt_regs *regs = get_irq_regs();
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if (uart->port.cons->index == CONFIG_KGDB_UART_PORT && ch == 0x1) { /* Ctrl + A */
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kgdb_breakkey_pressed(regs);
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return;
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@ -391,7 +364,6 @@ static void bfin_serial_do_work(struct work_struct *work)
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static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
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{
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struct circ_buf *xmit = &uart->port.info->xmit;
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unsigned short ier;
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uart->tx_done = 0;
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@ -429,13 +401,7 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
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set_dma_x_modify(uart->tx_dma_channel, 1);
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enable_dma(uart->tx_dma_channel);
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#ifdef CONFIG_BF54x
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UART_SET_IER(uart, ETBEI);
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#else
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ier = UART_GET_IER(uart);
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ier |= ETBEI;
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UART_PUT_IER(uart, ier);
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#endif
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}
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static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
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@ -513,19 +479,12 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
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{
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struct bfin_serial_port *uart = dev_id;
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struct circ_buf *xmit = &uart->port.info->xmit;
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unsigned short ier;
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spin_lock(&uart->port.lock);
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if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
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disable_dma(uart->tx_dma_channel);
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clear_dma_irqstat(uart->tx_dma_channel);
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#ifdef CONFIG_BF54x
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UART_CLEAR_IER(uart, ETBEI);
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#else
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ier = UART_GET_IER(uart);
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ier &= ~ETBEI;
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UART_PUT_IER(uart, ier);
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#endif
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xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
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uart->port.icount.tx += uart->tx_count;
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@ -701,7 +660,6 @@ static int bfin_serial_startup(struct uart_port *port)
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# endif
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}
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if (request_irq
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(uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED,
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"BFIN_UART_TX", uart)) {
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@ -710,11 +668,7 @@ static int bfin_serial_startup(struct uart_port *port)
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return -EBUSY;
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}
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#endif
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#ifdef CONFIG_BF54x
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UART_SET_IER(uart, ERBFI);
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#else
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UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
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#endif
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return 0;
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}
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@ -1290,11 +1244,7 @@ static int __init bfin_serial_init(void)
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request_irq(uart->port.irq, bfin_serial_rx_int,
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IRQF_DISABLED, "BFIN_UART_RX", uart);
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pr_info("Request irq for kgdb uart port\n");
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#ifdef CONFIG_BF54x
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UART_SET_IER(uart, ERBFI);
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#else
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UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
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#endif
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SSYNC();
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t.c_cflag = CS8|B57600;
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t.c_iflag = 0;
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@ -44,6 +44,8 @@
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#define UART_PUT_CHAR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_THR), v)
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#define UART_PUT_DLL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLL), v)
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#define UART_PUT_IER(uart, v) bfin_write16(((uart)->port.membase + OFFSET_IER), v)
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#define UART_SET_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
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#define UART_CLEAR_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
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#define UART_PUT_DLH(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLH), v)
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#define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v)
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#define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v)
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@ -44,6 +44,8 @@
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#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
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#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
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#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
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#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
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#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
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#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
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#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
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#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
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@ -44,6 +44,8 @@
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#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
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#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
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#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
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#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
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#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
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#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
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#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
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#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
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@ -44,6 +44,8 @@
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#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
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#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
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#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
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#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
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#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
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#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
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#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
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#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
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