diff options
Diffstat (limited to 'drivers/tty/serial/samsung_tty.c')
| -rw-r--r-- | drivers/tty/serial/samsung_tty.c | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index dc35eb77d2ef..0d184ee2f9ce 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -550,6 +550,7 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port) case TYPE_APPLE_S5L: s3c24xx_clear_bit(port, APPLE_S5L_UCON_RXTHRESH_ENA, S3C2410_UCON); s3c24xx_clear_bit(port, APPLE_S5L_UCON_RXTO_ENA, S3C2410_UCON); + s3c24xx_clear_bit(port, APPLE_S5L_UCON_RXTO_LEGACY_ENA, S3C2410_UCON); break; default: disable_irq_nosync(ourport->rx_irq); @@ -707,9 +708,8 @@ static void enable_rx_pio(struct s3c24xx_uart_port *ourport) static void s3c24xx_serial_rx_drain_fifo(struct s3c24xx_uart_port *ourport); -static irqreturn_t s3c24xx_serial_rx_chars_dma(void *dev_id) +static irqreturn_t s3c24xx_serial_rx_chars_dma(struct s3c24xx_uart_port *ourport) { - struct s3c24xx_uart_port *ourport = dev_id; struct uart_port *port = &ourport->port; struct s3c24xx_uart_dma *dma = ourport->dma; struct tty_struct *tty = tty_port_tty_get(&ourport->port.state->port); @@ -843,9 +843,8 @@ static void s3c24xx_serial_rx_drain_fifo(struct s3c24xx_uart_port *ourport) tty_flip_buffer_push(&port->state->port); } -static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) +static irqreturn_t s3c24xx_serial_rx_chars_pio(struct s3c24xx_uart_port *ourport) { - struct s3c24xx_uart_port *ourport = dev_id; struct uart_port *port = &ourport->port; uart_port_lock(port); @@ -855,13 +854,11 @@ static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) return IRQ_HANDLED; } -static irqreturn_t s3c24xx_serial_rx_irq(int irq, void *dev_id) +static irqreturn_t s3c24xx_serial_rx_irq(struct s3c24xx_uart_port *ourport) { - struct s3c24xx_uart_port *ourport = dev_id; - if (ourport->dma && ourport->dma->rx_chan) - return s3c24xx_serial_rx_chars_dma(dev_id); - return s3c24xx_serial_rx_chars_pio(dev_id); + return s3c24xx_serial_rx_chars_dma(ourport); + return s3c24xx_serial_rx_chars_pio(ourport); } static void s3c24xx_serial_tx_chars(struct s3c24xx_uart_port *ourport) @@ -928,9 +925,8 @@ static void s3c24xx_serial_tx_chars(struct s3c24xx_uart_port *ourport) s3c24xx_serial_stop_tx(port); } -static irqreturn_t s3c24xx_serial_tx_irq(int irq, void *id) +static irqreturn_t s3c24xx_serial_tx_irq(struct s3c24xx_uart_port *ourport) { - struct s3c24xx_uart_port *ourport = id; struct uart_port *port = &ourport->port; uart_port_lock(port); @@ -944,17 +940,17 @@ static irqreturn_t s3c24xx_serial_tx_irq(int irq, void *id) /* interrupt handler for s3c64xx and later SoC's.*/ static irqreturn_t s3c64xx_serial_handle_irq(int irq, void *id) { - const struct s3c24xx_uart_port *ourport = id; + struct s3c24xx_uart_port *ourport = id; const struct uart_port *port = &ourport->port; u32 pend = rd_regl(port, S3C64XX_UINTP); irqreturn_t ret = IRQ_HANDLED; if (pend & S3C64XX_UINTM_RXD_MSK) { - ret = s3c24xx_serial_rx_irq(irq, id); + ret = s3c24xx_serial_rx_irq(ourport); wr_regl(port, S3C64XX_UINTP, S3C64XX_UINTM_RXD_MSK); } if (pend & S3C64XX_UINTM_TXD_MSK) { - ret = s3c24xx_serial_tx_irq(irq, id); + ret = s3c24xx_serial_tx_irq(ourport); wr_regl(port, S3C64XX_UINTP, S3C64XX_UINTM_TXD_MSK); } return ret; @@ -963,19 +959,21 @@ static irqreturn_t s3c64xx_serial_handle_irq(int irq, void *id) /* interrupt handler for Apple SoC's.*/ static irqreturn_t apple_serial_handle_irq(int irq, void *id) { - const struct s3c24xx_uart_port *ourport = id; + struct s3c24xx_uart_port *ourport = id; const struct uart_port *port = &ourport->port; u32 pend = rd_regl(port, S3C2410_UTRSTAT); irqreturn_t ret = IRQ_NONE; - if (pend & (APPLE_S5L_UTRSTAT_RXTHRESH | APPLE_S5L_UTRSTAT_RXTO)) { + if (pend & (APPLE_S5L_UTRSTAT_RXTHRESH | APPLE_S5L_UTRSTAT_RXTO | + APPLE_S5L_UTRSTAT_RXTO_LEGACY)) { wr_regl(port, S3C2410_UTRSTAT, - APPLE_S5L_UTRSTAT_RXTHRESH | APPLE_S5L_UTRSTAT_RXTO); - ret = s3c24xx_serial_rx_irq(irq, id); + APPLE_S5L_UTRSTAT_RXTHRESH | APPLE_S5L_UTRSTAT_RXTO | + APPLE_S5L_UTRSTAT_RXTO_LEGACY); + ret = s3c24xx_serial_rx_irq(ourport); } if (pend & APPLE_S5L_UTRSTAT_TXTHRESH) { wr_regl(port, S3C2410_UTRSTAT, APPLE_S5L_UTRSTAT_TXTHRESH); - ret = s3c24xx_serial_tx_irq(irq, id); + ret = s3c24xx_serial_tx_irq(ourport); } return ret; @@ -1195,7 +1193,8 @@ static void apple_s5l_serial_shutdown(struct uart_port *port) ucon = rd_regl(port, S3C2410_UCON); ucon &= ~(APPLE_S5L_UCON_TXTHRESH_ENA_MSK | APPLE_S5L_UCON_RXTHRESH_ENA_MSK | - APPLE_S5L_UCON_RXTO_ENA_MSK); + APPLE_S5L_UCON_RXTO_ENA_MSK | + APPLE_S5L_UCON_RXTO_LEGACY_ENA_MSK); wr_regl(port, S3C2410_UCON, ucon); wr_regl(port, S3C2410_UTRSTAT, APPLE_S5L_UTRSTAT_ALL_FLAGS); @@ -1292,6 +1291,7 @@ static int apple_s5l_serial_startup(struct uart_port *port) /* Enable Rx Interrupt */ s3c24xx_set_bit(port, APPLE_S5L_UCON_RXTHRESH_ENA, S3C2410_UCON); s3c24xx_set_bit(port, APPLE_S5L_UCON_RXTO_ENA, S3C2410_UCON); + s3c24xx_set_bit(port, APPLE_S5L_UCON_RXTO_LEGACY_ENA, S3C2410_UCON); return ret; } @@ -2148,13 +2148,15 @@ static int s3c24xx_serial_resume_noirq(struct device *dev) ucon &= ~(APPLE_S5L_UCON_TXTHRESH_ENA_MSK | APPLE_S5L_UCON_RXTHRESH_ENA_MSK | - APPLE_S5L_UCON_RXTO_ENA_MSK); + APPLE_S5L_UCON_RXTO_ENA_MSK | + APPLE_S5L_UCON_RXTO_LEGACY_ENA_MSK); if (ourport->tx_enabled) ucon |= APPLE_S5L_UCON_TXTHRESH_ENA_MSK; if (ourport->rx_enabled) ucon |= APPLE_S5L_UCON_RXTHRESH_ENA_MSK | - APPLE_S5L_UCON_RXTO_ENA_MSK; + APPLE_S5L_UCON_RXTO_ENA_MSK | + APPLE_S5L_UCON_RXTO_LEGACY_ENA_MSK; wr_regl(port, S3C2410_UCON, ucon); @@ -2541,7 +2543,7 @@ static const struct s3c24xx_serial_drv_data s5l_serial_drv_data = { .name = "Apple S5L UART", .type = TYPE_APPLE_S5L, .port_type = PORT_8250, - .iotype = UPIO_MEM, + .iotype = UPIO_MEM32, .fifosize = 16, .rx_fifomask = S3C2410_UFSTAT_RXMASK, .rx_fifoshift = S3C2410_UFSTAT_RXSHIFT, @@ -2827,6 +2829,9 @@ OF_EARLYCON_DECLARE(gs101, "google,gs101-uart", gs101_early_console_setup); static int __init apple_s5l_early_console_setup(struct earlycon_device *device, const char *opt) { + /* Apple A7-A11 requires MMIO32 register accesses. */ + device->port.iotype = UPIO_MEM32; + /* Close enough to S3C2410 for earlycon... */ device->port.private_data = &s3c2410_early_console_data; |