kernel/linux.git/drivers/tty/serial/mpc52xx_uart.c, branch linux-4.4.y

serial: mpc52xx: add delay after resetting transmitter to fix broken chars

2015-10-04T16:27:56+00:00

This fixes receiving broken characters on the console from an MPC5125 system when systemd comes up which repeatedly opens and shuts down the console device. Trial and error with the needed interval showed that 500 us are good enough most of the time when using 38400 Bd, so I think 1 ms is a good compromise between fixing the issue and not penalize faster setups too much. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

serial: mpc52xx: let tx_empty callback return either 0 or TIOCSER_TEMT

2015-08-05T05:07:20+00:00

Documenation/serial/driver requests that the tx_empty callback should return 0 if there are still chars in the fifo or shifter or TIOCSER_TEMT (0x01) if no character is pending to be sent. Fix the mpc52xx serial driver to not return MPC52xx_PSC_SR_TXEMP (i.e. 0x0800) but TIOCSER_TEMT as documented. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

drivers/tty/serial/mpc52xx_uart.c: fix typo in C comment

2015-05-06T20:26:59+00:00

Fix reference on PPC_MPC52xx in C comment after #endif. Signed-off-by: Valentin Rothberg Reviewed-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman

tty: constify of_device_id array

2015-03-26T21:49:10+00:00

of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick Acked-by: Peter Korsgaard Acked-by: Timur Tabi Acked-by: Patrice Chotard Signed-off-by: Greg Kroah-Hartman

tty: serial: drop owner assignment from platform_drivers

2014-10-20T14:21:45+00:00

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang

serial: mpc52xx: Use default serial core x_char handler

2014-09-08T23:22:42+00:00

mpc52xx_uart_send_xchar() is _identical_ to the default serial core x_char handling behavior in uart_send_xchar(). Remove mpc52xx_uart_send_xchar(). Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman

serial: mpc512x: setup the PSC FIFO clock as well

2014-01-12T17:53:05+00:00

prepare and enable the FIFO clock upon PSC FIFO initialization, check for and propagage errors when enabling the PSC FIFO clock, disable and unprepare the FIFO clock upon PSC FIFO uninitialization devm_{get,put}_clk() doesn't apply here, as the SoC provides a single FIFO component which is shared among several PSC components, thus the FIFO isn't associated with a device (while the PSCs are) provide a fallback clock lookup approach in case the OF based clock lookup for the PSC FIFO fails, this allows for successful operation in the presence of an outdated device tree which lacks clock specs Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Acked-by: Greg Kroah-Hartman Signed-off-by: Gerhard Sittig Signed-off-by: Anatolij Gustschin

serial: mpc512x: adjust for OF based clock lookup

2014-01-12T17:53:04+00:00

after device tree based clock lookup became available, the peripheral driver need no longer construct clock names which include the PSC index, remove the "psc%d_mclk" template and unconditionally use 'mclk' acquire and release the "ipg" clock item for register access as well Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Acked-by: Greg Kroah-Hartman Signed-off-by: Gerhard Sittig Signed-off-by: Anatolij Gustschin

serial: mpc52xx: remove reference to .set_wake()

2013-10-16T20:16:19+00:00

This callback is gone and not coming back, so will not be supported later. Cc: Gerhard Sittig Cc: Anatolij Gustschin Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

serial: mpc512x: Remove casting the return value which is a void pointer

2013-09-26T21:29:59+00:00

Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han Acked-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman