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Commit 877c5ab2 authored by Venkata Manasa Kakarla's avatar Venkata Manasa Kakarla Committed by Gerrit - the friendly Code Review server
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serial:msm_geni_serial: Handling the cts counter in uart driver 



Handle the CTS counter whenever the change in CTS interrupt occur.
Using the M_IO_DATA_ASSERT bit in interrupt register, this will get
set when CTS is high.

Change-Id: I43c629f4d026af4a7e82d0d6d01b826259b0b1b5
Signed-off-by: default avatarVenkata Manasa Kakarla <venkka@codeaurora.org>
parent 6cb02c40

drivers/tty/serial/msm_geni_serial.c

+10 −1
Original line number Original line Diff line number Diff line
@@ -123,7 +123,9 @@ 
#define DATA_BYTES_PER_LINE	(32)

#define DATA_BYTES_PER_LINE	(32)





#define M_IRQ_BITS		(M_RX_FIFO_WATERMARK_EN | M_RX_FIFO_LAST_EN |\

#define M_IRQ_BITS		(M_RX_FIFO_WATERMARK_EN | M_RX_FIFO_LAST_EN |\

				M_CMD_CANCEL_EN | M_CMD_ABORT_EN)

				M_CMD_CANCEL_EN | M_CMD_ABORT_EN |\

				M_IO_DATA_ASSERT_EN | M_IO_DATA_DEASSERT_EN)



#define S_IRQ_BITS		(S_RX_FIFO_WATERMARK_EN | S_RX_FIFO_LAST_EN |\

#define S_IRQ_BITS		(S_RX_FIFO_WATERMARK_EN | S_RX_FIFO_LAST_EN |\

				S_CMD_CANCEL_EN | S_CMD_ABORT_EN)

				S_CMD_CANCEL_EN | S_CMD_ABORT_EN)

#define DMA_TX_IRQ_BITS		(TX_RESET_DONE | TX_DMA_DONE |\

#define DMA_TX_IRQ_BITS		(TX_RESET_DONE | TX_DMA_DONE |\
@@ -1908,6 +1910,13 @@ static void msm_geni_serial_handle_isr(struct uart_port *uport, 
		goto exit_geni_serial_isr;

		goto exit_geni_serial_isr;

	}

	}





	if (m_irq_status & (M_IO_DATA_ASSERT_EN | M_IO_DATA_DEASSERT_EN)) {

		uport->icount.cts++;

		IPC_LOG_MSG(msm_port->ipc_log_misc,

			"%s. cts counter:%d\n", __func__,

				uport->icount.cts);

	}



	if (s_irq_status & S_RX_FIFO_WR_ERR_EN) {

	if (s_irq_status & S_RX_FIFO_WR_ERR_EN) {

		uport->icount.overrun++;

		uport->icount.overrun++;

		tty_insert_flip_char(tport, 0, TTY_OVERRUN);

		tty_insert_flip_char(tport, 0, TTY_OVERRUN);