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path: root/src/soc/qualcomm/ipq806x/i2c.c
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2017-08-18include/device: Split i2c.h into threeNico Huber
Split `i2c.h` into three pieces to ease reuse of the generic defi- nitions. No code is changed. * `i2c.h` - keeps the generic definitions * `i2c_simple.h` - holds the current, limited to one controller driver per board, devicetree independent I2C interface * `i2c_bus.h` - will become the devicetree compatible interface for native I2C (e.g. non-SMBus) controllers Change-Id: I382d45c70f9314588663e1284f264f877469c74d Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20845 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-14i2c: Move to Linux like `struct i2c_msg`Nico Huber
Our current struct for I2C segments `i2c_seg` was close to being compa- tible to the Linux version `i2c_msg`, close to being compatible to SMBus and close to being readable (e.g. what was `chip` supposed to mean?) but turned out to be hard to fix. Instead of extending it in a backwards compatible way (and not touching current controller drivers), replace it with a Linux source compatible `struct i2c_msg` and patch all the drivers and users with Coccinelle. The new `struct i2c_msg` should ease porting drivers from Linux and help to write SMBus compatible controller drivers. Beside integer type changes, the field `read` is replaced with a generic field `flags` and `chip` is renamed to `slave`. Patched with Coccinelle using the clumsy spatch below and some manual changes: * Nested struct initializers and one field access skipped by Coccinelle. * Removed assumption in the code that I2C_M_RD is 1. * In `i2c.h`, changed all occurences of `chip` to `slave`. @@ @@ -struct i2c_seg +struct i2c_msg @@ identifier msg; expression e; @@ ( struct i2c_msg msg = { - .read = 0, + .flags = 0, }; | struct i2c_msg msg = { - .read = 1, + .flags = I2C_M_RD, }; | struct i2c_msg msg = { - .chip = e, + .slave = e, }; ) @@ struct i2c_msg msg; statement S1, S2; @@ ( -if (msg.read) +if (msg.flags & I2C_M_RD) S1 else S2 | -if (msg.read) +if (msg.flags & I2C_M_RD) S1 ) @@ struct i2c_msg *msg; statement S1, S2; @@ ( -if (msg->read) +if (msg->flags & I2C_M_RD) S1 else S2 | -if (msg->read) +if (msg->flags & I2C_M_RD) S1 ) @@ struct i2c_msg msg; expression e; @@ ( -msg.read = 0; +msg.flags = 0; | -msg.read = 1; +msg.flags = I2C_M_RD; | -msg.read = e; +msg.flags = e ? I2C_M_RD : 0; | -!!(msg.read) +(msg.flags & I2C_M_RD) | -(msg.read) +(msg.flags & I2C_M_RD) ) @@ struct i2c_msg *msg; expression e; @@ ( -msg->read = 0; +msg->flags = 0; | -msg->read = 1; +msg->flags = I2C_M_RD; | -msg->read = e; +msg->flags = e ? I2C_M_RD : 0; | -!!(msg->read) +(msg->flags & I2C_M_RD) | -(msg->read) +(msg->flags & I2C_M_RD) ) @@ struct i2c_msg msg; @@ -msg.chip +msg.slave @@ struct i2c_msg *msg; expression e; @@ -msg[e].chip +msg[e].slave @ slave disable ptr_to_array @ struct i2c_msg *msg; @@ -msg->chip +msg->slave Change-Id: Ifd7cabf0a18ffd7a1def25d1d7059b713d0b7ea9 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20542 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-04-21ipq806x: i2c: stop transfer as soon as an error is reportedSourabh Banerjee
I2c transfer may consist of multiple segments (for instance write segment to set the register address and then a read segment to read the register value). Transfer should be stopped as soon as a segment processing error has been reported. BRANCH=master BUG=chrome-os-partner:35328 TEST=transfer shall not process the read segment when the write segment fails Change-Id: I85b7b59b376ce33ba3f6d2526be86e9f6585d97b Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 50cd4d40851b3cea99183c549c47b4486a3deb4a Original-Change-Id: Id65f995d860dd670b289fbdd9eb0ca19a50d7007 Original-Signed-off-by: Sourabh Banerjee <sbanerje@codeaurora.org> Original-Reviewed-on: https://chromium-review.googlesource.com/254494 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/9824 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-17ipq806x: extend GSBI driver to support i2c on any GSBI blockSourabh Banerjee
The GSBI driver is extended to be able to program the CTRL reg for any given GSBI block. The NS and MD registers programming is made more readable by programming the M, N, D and other bits of the registers individually. Defined configure structs for each QUP block to be able to track the init status for each qup. Configured GPIO8 and GPIO9 for I2C fuction. BRANCH=chromeos-2013.04 BUG=chrome-os-partner:36722 TEST=Booted up storm P0.2, verified that the TPM on GSBI1 still works. Change-Id: I17906beedef5c80267cf114892080b121902210a Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 07bc79211770decc1070c3a88874a4e452b8f5bc Original-Change-Id: I841d0d419f7339f5e5cb3385da98786eb18252ad Original-Signed-off-by: Sourabh Banerjee <sbanerje@codeaurora.org> Original-Reviewed-on: https://chromium-review.googlesource.com/250763 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Trybot-Ready: Vadim Bendebury <vbendeb@chromium.org> Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org> Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/9759 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-15ipq806x: add i2c driverVadim Bendebury
this change ports i2c and other relevant drivers from depthcharge for ipq806x. BUG=chrome-os-partner:33647 BRANCH=ToT TEST=Booted storm using vboot2 Change-Id: I3d9a431aa8adb9b91dbccdf031647dfadbafc24c Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: a0c615d0a49fd9c0ffa231353800882fff6ab90b Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Change-Id: Id7cc3932ed4ae54f46336aaebde35e84125ebebd Original-Reviewed-on: https://chromium-review.googlesource.com/229428 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org> Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/9685 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-13ipq806x: copy i2c, qup, and gsbi drivers from depthchargeDaisuke Nojiri
this is a preparation for porting these drivers to coreboot. the code will be modified by the following patches. BUG=chrome-os-partner:33647 BRANCH=ToT TEST=None Change-Id: I2baeed5b6130ace2515d6e28115f8d1008004976 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Original-Commit-Id: 7c03a186a599be9d274c6fcdea1906529cc117d7 Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Change-Id: I9f3428ef02d2ba15ae63c99b10fe0605dd595313 Original-Reviewed-on: https://chromium-review.googlesource.com/231461 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org> Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/9582 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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