diff options
| author | Pradeep Goudagunta <pgoudagunta@nvidia.com> | 2012-01-04 16:40:05 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-06 17:09:56 +0530 |
| commit | de65f499762661c4d8e5193fc581cb8d529af8b5 (patch) | |
| tree | 5ccf1fb8315acc5eda6c8fd2dfa7db0f09c4f6a4 /drivers/tty | |
| parent | b7b887b7c867959d1d6198efe695e2ad5753e373 (diff) | |
tty: serial: tegra: Add HW loopback support
Add HW loopback support for testing purpose.
Bug 845036
Bug 921090
Signed-off-by: Pradeep Goudagunta <pgoudagunta@nvidia.com>
Change-Id: I202781ed0b42c1bed2b9aad9576cf74cb938f9e6
Reviewed-on: http://git-master/r/73149
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/tegra_hsuart.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/tegra_hsuart.c b/drivers/tty/serial/tegra_hsuart.c index f94dc24b5229..fecc3cf46f4d 100644 --- a/drivers/tty/serial/tegra_hsuart.c +++ b/drivers/tty/serial/tegra_hsuart.c @@ -847,6 +847,7 @@ static int tegra_startup(struct uart_port *u) struct tegra_uart_port *t = container_of(u, struct tegra_uart_port, uport); int ret = 0; + struct tegra_uart_platform_data *pdata; t = container_of(u, struct tegra_uart_port, uport); sprintf(t->port_name, "tegra_uart_%d", u->line); @@ -889,6 +890,9 @@ static int tegra_startup(struct uart_port *u) if (ret) goto fail; + pdata = u->dev->platform_data; + if (pdata->is_loopback) + t->mcr_shadow |= UART_MCR_LOOP; dev_dbg(u->dev, "Requesting IRQ %d\n", u->irq); msleep(1); |