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path: root/src/soc/qualcomm/ipq806x/uart.c
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2016-07-12Documentation: Fix doxygen errorsMartin Roth
Change-Id: I195fd3a9c7fc07c35913342d2041e1ffef110466 Signed-off-by: Martin Roth <martinroth@google.com> Reviewed-on: https://review.coreboot.org/15549 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-04-21arm(64): Globally replace writel(v, a) with write32(a, v)Julius Werner
This patch is a raw application of the following spatch to src/: @@ expression A, V; @@ - writel(V, A) + write32(A, V) @@ expression A, V; @@ - writew(V, A) + write16(A, V) @@ expression A, V; @@ - writeb(V, A) + write8(A, V) @@ expression A; @@ - readl(A) + read32(A) @@ expression A; @@ - readb(A) + read8(A) BRANCH=none BUG=chromium:444723 TEST=None (depends on next patch) Change-Id: I5dd96490c85ee2bcbc669f08bc6fff0ecc0f9e27 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 64f643da95d85954c4d4ea91c34a5c69b9b08eb6 Original-Change-Id: I366a2eb5b3a0df2279ebcce572fe814894791c42 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/254864 Reviewed-on: http://review.coreboot.org/9836 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-18ipq806x: initialize UART even when console is not enabledVadim Bendebury
The ipq806x UART is based on the same universal serial port which can be also configured as i2c or SPI. Configuring it is not a trivial task, so in case the kernel wants to use earlyprintk() the port needs to be configured by the firmware. Invoking uart_init() when the console is not enabled causes include file collisions, which would require changes to more than 100 files. Leaving this to another day, rearranging the ipq806x driver to be able to invoke UART initialization function even when serial console is not configured. Also add a check to avoid initialization if UART has been already set up. BRANCH=storm BUG=chrome-os-partner:35364 TEST=verified that storm console is still fully operational when enabled, and that the kernel boots fine to the serial console login prompt even if the firmware console is disabled. Change-Id: Ibbbab875449f2ac2f0d6c504c18faf0da8251ffa Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: c512d6c1d0c0868137d1213ea84cd4bca58872db Original-Change-Id: I421acba3edf398d960b5058f15d1abb80ebc7660 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/240516 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/9794 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-18ipq806x: uart: replace hardware accessorsVadim Bendebury
Originally ported QCA UART driver used hardware accessor macros where both address and data were represented by 32 bit integers. Coreboot uses macros where addresses are represented by pointers, this make the code more robust, as accidental swap between address and data does not go unnoticed. This patch converts ipq806x UART driver to use coreboot accessors. It relies on gcc void pointer arithmetic considering objects pointed at by void pointers to be one byte in size. Also replacing spaces with hard tabs where appropriate. BRANCH=storm BUG=chrome-os-partner:34790 TEST=new code still boots fine on Storm with console output present. Change-Id: I3ded9c338ff241bb1d839994f7296756aad8772d Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 10616351704ebbcfcf25793ae974b256bc5bd6b0 Original-Change-Id: Ie15e09f9f3ea10a8566b6845219c2e09fed39218 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/240514 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org> Reviewed-on: http://review.coreboot.org/9793 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-10gpio: Extend common GPIO header, simplify function namesJulius Werner
We've had gpiolib.h which defines a few common GPIO access functions for a while, but it wasn't really complete. This patch adds the missing gpio_output() function, and also renames the unwieldy gpio_get_in_value() and gpio_set_out_value() to the much easier to handle gpio_get() and gpio_set(). The header is renamed to the simpler gpio.h while we're at it (there was never really anything "lib" about it, and it was presumably just chosen due to the IPQ806x include/ conflict problem that is now resolved). It also moves the definition of gpio_t into SoC-specific code, so that different implementations are free to encode their platform-specific GPIO parameters in those 4 bytes in the most convenient way (such as the rk3288 with a bitfield struct). Every SoC intending to use this common API should supply a <soc/gpio.h> that typedefs gpio_t to a type at most 4 bytes in length. Files accessing the API only need to include <gpio.h> which may pull in additional things (like a gpio_t creation macro) from <soc/gpio.h> on its own. For now the API is still only used on non-x86 SoCs. Whether it makes sense to expand it to x86 as well should be separately evaluated at a later point (by someone who understands those systems better). Also, Exynos retains its old, incompatible GPIO API even though it would be a prime candidate, because it's currently just not worth the effort. BUG=None TEST=Compiled on Daisy, Peach_Pit, Nyan_Blaze, Rush_Ryu, Storm and Veyron_Pinky. Change-Id: Ieee77373c2bd13d07ece26fa7f8b08be324842fe Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 9e04902ada56b929e3829f2c3b4aeb618682096e Original-Change-Id: I6c1e7d1e154d9b02288aabedb397e21e1aadfa15 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/220975 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9400 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-08ipq806x: Change all SoC headers to <soc/headername.h> systemJulius Werner
This patch aligns ipq806x to the new SoC header include scheme. Also alphabetized headers in affected files since we touch them anyway. BUG=None TEST=Tested with whole series. Compiled Storm. Change-Id: Icb81a77e6f458625f5379a980e8760388dd3a1f9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 1bf23774c9ffa5d08c211f3658d39adcfa47b339 Original-Change-Id: I283cc7e6094be977d67ed4146f376cebcea6774a Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/224502 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9368 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: Patrick Georgi <pgeorgi@google.com>
2015-01-03ipq806x: clean up UART driver tx_byte functionVadim Bendebury
The driver as it was copied from u-boot provided a function to transmit multiple characters in one invocation. This feature was not ported to coreboot, there is no need to maintain the complexity when only one character at a time is transmitted. It is also very desirable to get rid of a 1024 byte array allocated on the stack. The array was necessary to allow to convert multiple newline characters in the transmit data flow into two character sequences CRLF. Now just a single word is enough to keep one or two characters to transmit. [EDIT km: newline translation is now part of printk] BUG=chrome-os-partner:27784 TEST=verified that coreboot with the new code prints generates console output. Original-Change-Id: I73869c5f4ca87210b34811b583386554bafff1e7 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/201782 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org> (cherry picked from commit eab3dc9d30c7e8355a2563e18ada78e4070e6151) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I4274b8f7188bf9636906b39bcd9ec7adf0e1222e Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8011 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2014-12-30ipq8064: prepare uart driver for use in corebootVadim Bendebury
The IO accessor wrappers are used to allow integer register addresses. A structure defining UART interface configuration is declared and defined. A few long lines are wrapped. Interface functions are renamed to match the wrapper API. cdp.c is edited to fit into coreboot compilation environment, and the only function required by the UART driver if exposed, the rest are compiled out for now. BUG=chrome-os-partner:27784 TEST=after all patches are applied the serial console on AP148 becomes operational. Original-Change-Id: I80c824d085036c0f90c52aad77843e87976dbe49 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/196662 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 5e9af53a069cd048334a3a28f0a4ce9df7c96992) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I80c824d085036c0f90c52aad77843e87976dbe49 Reviewed-on: http://review.coreboot.org/7874 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2014-12-30ipq8064: SOC UART driver belongs in the SOC directoryVadim Bendebury
Move the driver to where it belongs. BUG=chrome-os-partner:27784 TEST=none Original-Change-Id: Iee33de0b29a6bb86ba7c37e7e89aabc0fee42e80 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/196658 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 64afb0a2ac9b6cd4c202b879a484220e70ff5bbe) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Iee33de0b29a6bb86ba7c37e7e89aabc0fee42e80 Reviewed-on: http://review.coreboot.org/7871 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins)