linux-toradex.git/drivers/tty/serial/8250, branch v4.4.42 Linux kernel for Apalis and Colibri modules serial: 8250_dw: Check the data->pclk when get apb_pclk 2016-10-22T10:26:54+00:00 Kefeng Wang wangkefeng.wang@huawei.com 2016-08-24T08:33:33+00:00 42c947900f8d017ebfdca25fa214f87820734db7 commit e16b46f190a22587898b331f9d58583b0b166c9a upstream. It should check the data->pclk, not data->clk when get apb_pclk. Fixes: c8ed99d4f6a8("serial: 8250_dw: Add support for deferred probing") Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit e16b46f190a22587898b331f9d58583b0b166c9a upstream.

It should check the data->pclk, not data->clk when get apb_pclk.

Fixes: c8ed99d4f6a8("serial: 8250_dw: Add support for deferred probing")
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250: added acces i/o products quad and octal serial cards 2016-09-24T08:07:38+00:00 Jimi Damon jdamon@accesio.com 2016-07-21T00:00:40+00:00 58559c6776bee647e48c0673d69af3b398a3d346 commit c8d192428f52f244130b84650ad616df09f2b1e1 upstream. Added devices ids for acces i/o products quad and octal serial cards that make use of existing Pericom PI7C9X7954 and PI7C9X7958 configurations . Signed-off-by: Jimi Damon <jdamon@accesio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit c8d192428f52f244130b84650ad616df09f2b1e1 upstream.

Added devices ids for acces i/o products quad and octal serial cards
that make use of existing Pericom PI7C9X7954 and PI7C9X7958
configurations .

Signed-off-by: Jimi Damon <jdamon@accesio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_mid: fix divide error bug if baud rate is 0 2016-09-24T08:07:38+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2016-07-01T14:21:49+00:00 d5d1383049c8d4ed1b906850175be2f547ba574e commit 47b34d2ef266e2c283b514d65c8963c2ccd42474 upstream. Since the commit c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID"), the 8250 driver crashes in the byt_set_termios() function with a divide error. This is caused by the fact that a baud rate of 0 (B0) is not handled properly. Fix it by falling back to B9600 in this case. Reported-by: "Mendez Salinas, Fernando" <fernando.mendez.salinas@intel.com> Fixes: c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 47b34d2ef266e2c283b514d65c8963c2ccd42474 upstream.

Since the commit c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by
formula for Intel MID"), the 8250 driver crashes in the byt_set_termios()
function with a divide error. This is caused by the fact that a baud rate of 0
(B0) is not handled properly. Fix it by falling back to B9600 in this case.

Reported-by: "Mendez Salinas, Fernando" <fernando.mendez.salinas@intel.com>
Fixes: c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_mid: recognize interrupt source in handler 2016-06-01T19:15:53+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2016-04-04T14:35:10+00:00 430b4aab73830577eb22aa434b35947f87e7ea4b commit c42850f1ae7e70056f852e67bb9dddf927853b47 upstream. There is a special register that shows interrupt status by source. In particular case the source can be a combination of DMA Tx, DMA Rx, and UART. Read the register and call the handlers only for sources that request an interrupt. Fixes: 6ede6dcd87aa ("serial: 8250_mid: add support for DMA engine handling from UART MMIO") Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit c42850f1ae7e70056f852e67bb9dddf927853b47 upstream.

There is a special register that shows interrupt status by source. In
particular case the source can be a combination of DMA Tx, DMA Rx, and UART.

Read the register and call the handlers only for sources that request an
interrupt.

Fixes: 6ede6dcd87aa ("serial: 8250_mid: add support for DMA engine handling from UART MMIO")
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_mid: use proper bar for DNV platform 2016-06-01T19:15:53+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2016-04-04T14:35:09+00:00 3c5dafe43d1e36b70606d3baef8d7f24c0883343 commit 107e15fc1f8d6ef69eac5f175971252f76e82f0d upstream. Unlike Intel Medfield and Tangier platforms DNV uses PCI BAR0 for IO compatible resources and BAR1 for MMIO. We need latter in a way to support DMA. Introduce an additional field in the internal structure and pass PCI BAR based on device ID. Reported-by: "Lai, Poey Seng" <poey.seng.lai@intel.com> Fixes: 6ede6dcd87aa ("serial: 8250_mid: add support for DMA engine handling from UART MMIO") Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 107e15fc1f8d6ef69eac5f175971252f76e82f0d upstream.

Unlike Intel Medfield and Tangier platforms DNV uses PCI BAR0 for IO compatible
resources and BAR1 for MMIO. We need latter in a way to support DMA. Introduce
an additional field in the internal structure and pass PCI BAR based on device
ID.

Reported-by: "Lai, Poey Seng" <poey.seng.lai@intel.com>
Fixes: 6ede6dcd87aa ("serial: 8250_mid: add support for DMA engine handling from UART MMIO")
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_pci: fix divide error bug if baud rate is 0 2016-06-01T19:15:52+00:00 David Müller d.mueller@elsoft.ch 2016-04-27T09:58:32+00:00 1401ebda89ebf3156984c175209f630e0844f6ce commit 6f210c18c1c0f016772c8cd51ae12a02bfb9e7ef upstream. Since commit 21947ba654a6 ("serial: 8250_pci: replace switch-case by formula"), the 8250 driver crashes in the byt_set_termios() function with a divide error. This is caused by the fact that a baud rate of 0 (B0) is not handled properly. Fix it by falling back to B9600 in this case. Signed-off-by: David Müller <d.mueller@elsoft.ch> Fixes: 21947ba654a6 ("serial: 8250_pci: replace switch-case by formula") Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6f210c18c1c0f016772c8cd51ae12a02bfb9e7ef upstream.

Since commit 21947ba654a6 ("serial: 8250_pci: replace switch-case by
formula"), the 8250 driver crashes in the byt_set_termios() function
with a divide error. This is caused by the fact that a baud rate of 0 (B0)
is not handled properly. Fix it by falling back to B9600 in this case.

Signed-off-by: David Müller <d.mueller@elsoft.ch>
Fixes: 21947ba654a6 ("serial: 8250_pci: replace switch-case by formula")
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8250: use callbacks to access UART_DLL/UART_DLM 2016-04-12T16:08:49+00:00 Sebastian Frias sf84@laposte.net 2015-12-18T16:40:05+00:00 fc0768092cebd0b70a08f5423263669ea3849ef9 commit 0b41ce991052022c030fd868e03877700220b090 upstream. Some UART HW has a single register combining UART_DLL/UART_DLM (this was probably forgotten in the change that introduced the callbacks, commit b32b19b8ffc05cbd3bf91c65e205f6a912ca15d9) Fixes: b32b19b8ffc0 ("[SERIAL] 8250: set divisor register correctly ...") Signed-off-by: Sebastian Frias <sf84@laposte.net> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 0b41ce991052022c030fd868e03877700220b090 upstream.

Some UART HW has a single register combining UART_DLL/UART_DLM
(this was probably forgotten in the change that introduced the
callbacks, commit b32b19b8ffc05cbd3bf91c65e205f6a912ca15d9)

Fixes: b32b19b8ffc0 ("[SERIAL] 8250: set divisor register correctly ...")

Signed-off-by: Sebastian Frias <sf84@laposte.net>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_pci: Add Intel Broadwell ports 2016-02-25T20:01:14+00:00 Mika Westerberg mika.westerberg@linux.intel.com 2016-01-29T14:49:47+00:00 76e88140aa9111605768e7725ec1c5b709d51865 commit 6c55d9b98335f7f6bd5f061866ff1633401f3a44 upstream. Some recent (early 2015) macbooks have Intel Broadwell where LPSS UARTs are PCI enumerated instead of ACPI. The LPSS UART block is pretty much same as used on Intel Baytrail so we can reuse the existing Baytrail setup code. Add both Broadwell LPSS UART ports to the list of supported devices. Signed-off-by: Leif Liddy <leif.liddy@gmail.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6c55d9b98335f7f6bd5f061866ff1633401f3a44 upstream.

Some recent (early 2015) macbooks have Intel Broadwell where LPSS UARTs are
PCI enumerated instead of ACPI. The LPSS UART block is pretty much same as
used on Intel Baytrail so we can reuse the existing Baytrail setup code.

Add both Broadwell LPSS UART ports to the list of supported devices.

Signed-off-by: Leif Liddy <leif.liddy@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
tty: Add support for PCIe WCH382 2S multi-IO card 2016-02-25T20:01:14+00:00 Jeremy McNicoll jmcnicol@redhat.com 2016-02-02T21:00:45+00:00 124efa9fd5679ed68fd69e5b899e55b0452c68a4 commit 7dde55787b43a8f2b4021916db38d90c03a2ec64 upstream. WCH382 2S board is a PCIe card with 2 DB9 COM ports detected as Serial controller: Device 1c00:3253 (rev 10) (prog-if 05 [16850]) Signed-off-by: Jeremy McNicoll <jmcnicol@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 7dde55787b43a8f2b4021916db38d90c03a2ec64 upstream.

WCH382 2S board is a PCIe card with 2 DB9 COM ports detected as
Serial controller: Device 1c00:3253 (rev 10) (prog-if 05 [16850])

Signed-off-by: Jeremy McNicoll <jmcnicol@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: 8250_uniphier: fix dl_read and dl_write functions 2015-12-13T05:42:31+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2015-10-19T04:37:55+00:00 7be047e035dc4fb1536f1694cbb932f881533ab2 The register offset must be shifted by regshift, otherwise the baudrate is not set. I missed the issue probably because the divisor register was already set by the boot loader. Fixes: 1a8d2903cb6a ("serial: 8250_uniphier: add UniPhier serial driver") Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The register offset must be shifted by regshift, otherwise the
baudrate is not set.  I missed the issue probably because the
divisor register was already set by the boot loader.

Fixes: 1a8d2903cb6a ("serial: 8250_uniphier: add UniPhier serial driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>