The tegra serial IP seems to be following the common layout and the
interrupt ID's match up nicely. Replace the magic values to match the
common serial_reg defines, with the addition of the Tegra unique End of
Data interrupt.
Signed-off-by: Olliver Schinagl <oliver@xxxxxxxxxxx>
---
Note I do not own any tegra hardware and just noticed it while working on my
somewhat related previous patch,
"serial: Do not treat the IIR register as a bitfield"
As such, this patch can only be applied after the aforementioned patch or the
iir variable will not have its mask applied yet.
drivers/tty/serial/serial-tegra.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 4a084161d1d2..f765999dcbfe 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -83,6 +83,8 @@
#define TEGRA_TX_PIO 1
#define TEGRA_TX_DMA 2
+#define TEGRA_UART_IIR_EOD 0x8
+
/**
* tegra_uart_chip_data: SOC specific data.
*
@@ -707,20 +709,20 @@ static irqreturn_t tegra_uart_isr(int irq, void *data)
return IRQ_HANDLED;
}
- switch ((iir >> 1) & 0x7) {
- case 0: /* Modem signal change interrupt */
+ switch (iir) {
+ case UART_IIR_MSI: /* Modem signal change interrupt */
tegra_uart_handle_modem_signal_change(u);
break;
- case 1: /* Transmit interrupt only triggered when using PIO */
+ case UART_IIR_THRI: /* Transmit interrupt only triggered when using PIO */
tup->ier_shadow &= ~UART_IER_THRI;
tegra_uart_write(tup, tup->ier_shadow, UART_IER);
tegra_uart_handle_tx_pio(tup);
break;
- case 4: /* End of data */
- case 6: /* Rx timeout */
- case 2: /* Receive */
+ case TEGRA_UART_IIR_EOD: /* End of data */
+ case UART_IIR_RX_TIMEOUT: /* Rx timeout */
+ case UART_IIR_RDI: /* Receive */
if (!is_rx_int) {
is_rx_int = true;
/* Disable Rx interrupts */
@@ -734,13 +736,12 @@ static irqreturn_t tegra_uart_isr(int irq, void *data)
}
break;
- case 3: /* Receive error */
+ case UART_IIR_RLSI: /* Receive error */
tegra_uart_decode_rx_error(tup,
tegra_uart_read(tup, UART_LSR));
break;
- case 5: /* break nothing to handle */
- case 7: /* break nothing to handle */
+ default:
break;
}
}
--
2.11.0
--
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