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Change-Id: I2fcf46d1fc4b0cd4c61e5be3654c43b80db86015
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Register the console in a console_initcall() to ensure that
pl011_console_setup() gets called early and thus the
uart_console() macro usage in pl011_power_startup() returns
the correct value the first time it is called, so that the
vAPE regulator is not taken for the console port.
Note that this problem is seen only when the console port
is line 0, since even without this patch pl011_console_setup()
gets called (and thus the correct console->index is set)
after the first port is added.
ST-Ericsson ID: 368522
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I7f4ab80e8d8be014bfdbe695ea45007212c9c4ea
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34411
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Reviewed-by: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
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During pl011 probe() On u8500 platform, amba bus driver tries to access
regulator driver and fails as the regulator driver is also at arch_init level.
Moving serial driver to the next level but still as early as possible.
Change-Id: I29d23067df9465b3c25f4010dca8af253fe6d070
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/32121
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Tested-by: Jonas ABERG <jonas.aberg@stericsson.com>
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fix errors and warnings highlighted by checkpatch.pl
ST-Ericsson ID: NA
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: NA
Change-Id: I34755b1ffabec32a2beb942e59586c398cc5b642
Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com>
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pl011 changes from the following commits have been manually merged.
ef45647, d57a627, 588c0bb, 9b4ecf9, 913afa0,
13aa593, e7d5dcb, 5115d25, 19fcf44
ST-Ericsson ID: NA
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: NA
Change-Id: I1759c825add127867cf6edc688b860e82743ce6f
Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com>
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Ref:
ARM: ux500: uart: context save/restore uses relaxed
pl011: add ifdef
pl011: don't touch registers when clock is off
ux500: pl011: Workaround for UART registers lockup
Migrated Changes from: e1f512c, 852b78d, c2195fa, ac87c0e
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ST-Ericsson Linux next: 342766
ST-Ericsson ID: 340139
ST-Ericsson FOSS-OUT ID: Trivial
Signed-off-by: Robert Marklund <robert.marklund@stericsson.com>
Change-Id: I47692d7a7993cbeda53dfca737d6346f043336f3
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/24059
Reviewed-by: Par-Gunnar HJALMDAHL <par-gunnar.p.hjalmdahl@stericsson.com>
Reviewed-by: Dmitry TARNYAGIN <dmitry.tarnyagin@stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
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This workaround aims to break the deadlock situation
which raises during continuous transfer of data for long
duration over uart with hardware flow control. It is
observed that CTS interrupt cannot be cleared in uart
interrupt register (ICR). Hence further transfer over
uart gets blocked.
It is seen that during such deadlock condition ICR
don't get cleared even on multiple write. This leads
pass_counter to decrease and finally reach zero. This
can be taken as trigger point to run this UART_BT_WA.
Workaround backups the register configuration, does soft
reset of UART using BIT-0 of PRCC_K_SOFTRST_SET/CLEAR
registers and restores the registers.
This patch also provides support for uart init and exit
function calls if present.
Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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remove invalid location line in each file header after location
moved from driver/char to driver/tty
Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
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This piece of code was just slightly different between the DMA
and IRQ paths, in DMA mode we surely shouldn't read more than
256 character either, so factor this out in its own function and
use for both DMA and PIO mode.
Tested on Ux500 and U300.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This adds an optional RX DMA codepath for the devices that
support this by using the apropriate burst sizes instead of
pulling single bytes.
Includes portions of code written by Russell King during
a PL08x hacking session.
This has been tested on U300 and Ux500.
Tested-by: Jerzy Kasenberg <jerzy.kasenberg@tieto.com>
Tested-by: Grzegorz Sygieda <grzegorz.sygieda@tieto.com>
Tested-by: Marcin Mielczarczyk <marcin.mielczarczyk@tieto.com>
Signed-off-by: Per Forlin <per.friden@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Make Primecell driver probe functions take a const pointer to their
ID tables. Drivers should never modify their ID tables in their
probe handler.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.
This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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