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path: root/drivers/clk/qcom/lcc-ipq806x.c
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2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282Thomas Gleixner
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-01clk: qcom: lcc-ipq806x: Fixup overriding val in regmap_read callAxel Lin
Drop the assignment of regmap_read return code to val, so the code checks the value read. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-02-12Revert "clk: qcom: Specify LE device endianness"Stephen Boyd
This reverts commit 329cabcecf94d8d7821e729dda284ba9dec44c87. The commit that caused us to specify LE device endianness here, 29bb45f25ff3 (regmap-mmio: Use native endianness for read/write, 2015-10-29), has been reverted in mainline so now when we specify LE it actively breaks big endian kernels because the byte swapping in regmap-mmio is incorrect. Let's revert this change because it will 1) fix the big endian kernels and 2) be redundant to specify LE because that will become the default soon. Cc: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@baylibre.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-20clk: qcom: Specify LE device endiannessStephen Boyd
All these clock controllers are little endian devices, but so far we've been relying on the regmap mmio bus handling this for us without explicitly stating that fact. After commit 4a98da2164cf (regmap-mmio: Use native endianness for read/write, 2015-10-29), the regmap mmio bus will read/write with the __raw_*() IO accessors, instead of using the readl/writel() APIs that do proper byte swapping for little endian devices. So if we're running on a big endian processor and haven't specified the endianness explicitly in the regmap config or in DT, we're going to switch from doing little endian byte swapping to big endian accesses without byte swapping, leading to some confusing results. On my apq8074 dragonboard, this causes the device to fail to boot as we access the clock controller with big endian IO accesses even though the device is little endian. Specify the endianness explicitly so that the regmap core properly byte swaps the accesses for us. Reported-by: Kevin Hilman <khilman@linaro.org> Tested-by: Tyler Baker <tyler.baker@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Cc: Simon Arlott <simon@fire.lp0.eu> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-08clk: qcom: Drop calls to qcom_cc_remove()Stephen Boyd
Now that qcom_cc_remove() is a nop, drop calls to qcom_cc_remove() and any empty driver remove functions. Cc: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-07-06clk: qcom: Constify the parent names arraysGeorgi Djakov
Make const both the array and the strings, so they can be moved to .rodata section. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-03-26clk: qcom: Fix ipq806x LCC frequency tablesStephen Boyd
These frequency tables list the wrong rates. Either they don't have the correct frequency at all, or they're specified in kHz instead of Hz. Fix it. Fixes: c99e515a92e9 "clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver" Tested-by: Kenneth Westfield <kwestfie@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-03-23clk: qcom: Introduce parent_map tablesGeorgi Djakov
In the current parent mapping code, we can get duplicate or inconsistent indexes, which leads to discrepancy between the number of elements in the array and the number of parents. Until now, this was solved with some reordering but this is not always possible. This patch introduces index tables that are used to define the relations between the PLL source and the hardware mux configuration value. To accomplish this, here we do the following: - Define a parent_map struct to map the relations between PLL source index and register configuration value. - Add a qcom_find_src_index() function for finding the index of a clock matching the specific PLL configuration. - Update the {set,get}_parent RCG functions use the newly introduced parent_map struct. - Convert all existing drivers to the new parent_map tables. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-03-12Merge branch 'clk-fixes' into clk-nextStephen Boyd
2015-03-12clk: qcom: Properly change rates for ahbix clockStephen Boyd
The ahbix clock can never be turned off in practice. To change the rates we need to switch the mux off the M/N counter to an always on source (XO), reprogram the M/N counter to get the rate we want and finally switch back to the M/N counter. Add a new ops structure for this type of clock so that we can set the rate properly. Fixes: c99e515a92e9 "clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver" Tested-by: Kenneth Westfield <kwestfie@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-02-25clk: qcom: fix platform_no_drv_owner.cocci warningskbuild test robot
drivers/clk/qcom/lcc-ipq806x.c:465:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci CC: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-01-27clk: qcom: Add IPQ806X LPASS clock controller (LCC) driverRajendra Nayak
Add an LCC driver for IPQ806x that supports the i2s, S/PDIF, and pcm clocks. Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Kumar Gala <galak@codeaurora.org> Signed-off-by: Josh Cartwright <joshc@codeaurora.org> [sboyd@codeaurora.org: Reworded commit text, added Kconfig select, fleshed out Kconfig description a bit more, added pll4 configuration and reworked probe for it, added muxes, split out dt-binding file] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Kenneth Westfield <kwestfie@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>