blackbird-op-linux/drivers/tty/serial/msm_serial.h, branch master

tty: serial: msm: Move header file into driver

2016-06-25T17:23:54+00:00

This header file is only used by the driver, so let's merge the two together to reduce files and make it easier to see the whole driver without flipping through two files. This also makes it easier to use the structures defined in msm_serial.c in the functions that are defined in msm_serial.h by placing them in the proper locations. Signed-off-by: Stephen Boyd Acked-by: Andy Gross Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Add RX DMA support

2015-10-04T18:15:17+00:00

Add receive DMA support for UARTDM type of controllers. Tested on APQ8064, which have UARTDM v1.3 and ADM DMA engine and APQ8016, which have UARTDM v1.4 and BAM DMA engine. Signed-off-by: Ivan T. Ivanov Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Add TX DMA support

2015-10-04T18:15:17+00:00

Add transmit DMA support for UARTDM type of controllers. Tested on APQ8064, which have UARTDM v1.3 and ADM DMA engine and APQ8016, which have UARTDM v1.4 and BAM DMA engine. Signed-off-by: Ivan T. Ivanov Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: replaces (1 << x) with BIT(x) macro

2015-10-04T18:15:17+00:00

Replaces (1 << x) with BIT(x) macro Signed-off-by: Pramod Gurav Reviewed-by: Stephen Boyd Signed-off-by: Ivan T. Ivanov Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Add mask value for UART_DM registers

2015-10-04T18:15:17+00:00

The bit masks for RFR_LEVEL1 and STALE_TIMEOUT_MSB values in MR1 and IPR registers respectively are different for UART and UART_DM hardware cores. We have been using UART core mask values for these. Add the same for UART_DM core. There is no bit setting as UART_IPR_RXSTALE_LAST for UART_DM core so do it only for UART core. Signed-off-by: Pramod Gurav Reviewed-by: Stephen Boyd Signed-off-by: Ivan T. Ivanov Signed-off-by: Greg Kroah-Hartman

tty: serial: msm_serial: Remove dead code

2015-03-26T21:31:09+00:00

This config no longer exists now that mach-msm has been removed. Delete it and the associated code. Cc: Greg Kroah-Hartman Cc: David Brown Cc: Bryan Huntsman Cc: Daniel Walker Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Support sysrq on uartDM devices

2014-11-06T22:57:22+00:00

To properly support sysrq on uartDM hardware we need to properly handle break characters. With the DM hardware the fifo can pack 4 characters at a time, where a break is indicated by an all zero byte. Unfortunately, we can't differentiate between an all zero byte for a break and an all zero byte of data, so try and do as best we can. First unmask the RX break start interrupt and record the interrupt when it arrives. Then while processing the fifo, detect the break by searching for an all zero character as long as we recently received an RX break start interrupt. This should make sysrq work fairly well. Cc: Frank Rowand Cc: Daniel Thompson Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Support big-endian CPUs

2014-07-10T23:10:42+00:00

To support big-endian CPUs use the string versions of the io read/write macros on the TX/RX fifos and the non-raw variants of the readl/writel macros throughout. This way we don't byteswap the characters coming from the fifos but we properly deal with the little-endian nature of the serial hardware while controlling it. Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman

tty: serial: msm: Remove direct access to GSBI

2014-05-29T16:06:20+00:00

This patch removes direct access of the GSBI registers. GSBI configuration should be done through the GSBI driver directly. Signed-off-by: Andy Gross Signed-off-by: Kumar Gala

msm_serial: Add support for poll_{get,put}_char()

2014-02-12T19:34:23+00:00

Implement the polling functionality for the MSM serial driver. This allows us to use KGDB on this hardware. Cc: David Brown Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman