2374a5399b7263eb1afc6b5522a56ebf9f0b8636 |
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16-Sep-2014 |
Naveen Krishna Ch <ch.naveen@samsung.com> |
i2c: exynos: add support for HSI2C module on Exynos7 The HSI2C module on Exynos7 differs in the transfer status bits. Transfer status bits were moved to INT_ENABLE and INT_STATUS registers This patch adds support for the HSI2C module on Exynos7. 1. Implementes a "hw" field in the variant struct to distinguish the hardware. 2. Updates the dt-new compatible in dt-binding documenation Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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290025d9ffd6ba48b4e18e65e4a9aa668383fbf5 |
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26-Jun-2014 |
Naveen Krishna Ch <ch.naveen@samsung.com> |
i2c: exynos5: remove extra line and fix an assignment This patch does the following in exynos5_i2c_message_start() function 1. Fixes an assignment As, "i2c_auto_conf" is initialized to '0' at the beginning of the function and HSI2C_READ_WRITE is defined as (1u << 16) Using "|=" for the first assignment is more readable. 2. Removes an extra line Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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9f89df3ed6846629c8a30c42a0856f891b5b47d3 |
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26-Jun-2014 |
Naveen Krishna Ch <ch.naveen@samsung.com> |
i2c: exynos5: remove an unnecessary read of FIFO_STATUS register This patch removes an extra read of FIFO_STATUS register in the interrrupt service routine. Which is read again before the actual use. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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57186fe3db3ec462065a9fab41344a9d78785ad9 |
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25-Jun-2014 |
Doug Anderson <dianders@chromium.org> |
i2c: exynos5: Properly use the "noirq" variants of suspend/resume The original code for the exynos i2c controller registered for the "noirq" variants. However during review feedback it was moved to SIMPLE_DEV_PM_OPS without anyone noticing that it meant we were no longer actually "noirq" (despite functions named exynos5_i2c_suspend_noirq and exynos5_i2c_resume_noirq). i2c controllers that might have wakeup sources on them seem to need to resume at noirq time so that the individual drivers can actually read the i2c bus to handle their wakeup. NOTE: I took the original review feedback from Wolfram and added poweroff, thaw, freeze, restore. This patch has only been compile-tested since I don't have all the patches needed to make my machine using this i2c driver actually suspend/resume. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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46797a2adbf0cdc3be17707dc64e872eeed86a8a |
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13-May-2014 |
Jingoo Han <jg1.han@samsung.com> |
i2c: remove unnecessary OOM messages The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. For example, k.alloc and v.alloc failures use dump_stack(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Jean Delvare <jdelvare@suse.de> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Felipe Balbi <balbi@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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218e1496135e94e901bf1c136d81ede7e2b418b8 |
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28-Apr-2014 |
Naveen Krishna Ch <ch.naveen@samsung.com> |
i2c: exynos5: add support for HSI2C on Exynos5260 SoC HSI2C module on Exynos5260 differs from current modules in following ways: 1. HSI2C on Exynos5260 has fifo_depth of 16bytes 2. Module needs to be reset as a part of init sequence. Hence, Following changes are involved. 1. Add a new compatible string and Updates the Documentation dt bindings. 2. Introduce a variant struct to support the changes in H/W 3. Reset the module during init. Thus, bringing the module back to default state irrespective of what firmware did with it. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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0ff83d2cad1ad584bd5df639750f90bd6b09055c |
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11-Mar-2014 |
Jingoo Han <jg1.han@samsung.com> |
i2c: exynos5: remove unnecessary cast of void pointer Remove unnecessary cast of void pointer, because 'algo_data' of 'struct i2c_adapter' is a void pointer. Casting the void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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3917b84d17ed769cb2dbaa7ab57148f6073134b0 |
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11-Mar-2014 |
Jingoo Han <jg1.han@samsung.com> |
i2c: exynos5: add CONFIG_PM_SLEEP to suspend/resume functions Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. warning: 'exynos5_i2c_suspend_noirq' defined but not used [-Wunused-function] warning: 'exynos5_i2c_resume_noirq' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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21d0b7c0faf2f780afa2bef72cc921ace10a7356 |
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21-Jan-2014 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
i2c: delete non-required instances of include <linux/init.h> None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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77d84ff87e9d38072abcca665ca22cb1da41cb86 |
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08-Dec-2013 |
Masanari Iida <standby24x7@gmail.com> |
treewide: Fix typos in printk Correct spelling typo in various part of kernel Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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3cd0c2dfb482c90dd0547ec492c32adeb31e2bd5 |
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06-Nov-2013 |
Sachin Kamat <sachin.kamat@linaro.org> |
i2c: exynos5: Remove incorrect clk_disable_unprepare clk_disable_unprepare in remove causes an imbalance and hence gives the below crash on module remove. While at it also remove some duplicate code from probe. / $ rmmod i2c-exynos5 [ 6.996374] ------------[ cut here ]------------ [ 6.999523] WARNING: CPU: 2 PID: 1137 at drivers/clk/clk.c:842 clk_disable+0x18/0x24() [ 7.007403] Modules linked in: i2c_exynos5(-) [ 7.011747] CPU: 2 PID: 1137 Comm: rmmod Not tainted 3.12.0-next-20131105-00083-g16f4799-dirty #21 [ 7.020696] [<c0014e0c>] (unwind_backtrace+0x0/0xf4) from [<c0011784>] (show_stack+0x10/0x14) [ 7.029190] [<c0011784>] (show_stack+0x10/0x14) from [<c037acd4>] (dump_stack+0x7c/0xb0) [ 7.037255] [<c037acd4>] (dump_stack+0x7c/0xb0) from [<c001e0ac>] (warn_slowpath_common+0x6c/0x88) [ 7.046190] [<c001e0ac>] (warn_slowpath_common+0x6c/0x88) from [<c001e164>] (warn_slowpath_null+0x1c/0x24) [ 7.055818] [<c001e164>] (warn_slowpath_null+0x1c/0x24) from [<c02dcde4>] (clk_disable+0x18/0x24) [ 7.064670] [<c02dcde4>] (clk_disable+0x18/0x24) from [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5]) [ 7.074736] [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5]) from [<c02274a8>] (__device_release_driver+0x58/0xb0) [ 7.085836] [<c02274a8>] (__device_release_driver+0x58/0xb0) from [<c0227b88>] (driver_detach+0xac/0xb0) [ 7.095291] [<c0227b88>] (driver_detach+0xac/0xb0) from [<c02271c0>] (bus_remove_driver+0x4c/0xa0) [ 7.104227] [<c02271c0>] (bus_remove_driver+0x4c/0xa0) from [<c00725dc>] (SyS_delete_module+0x124/0x194) [ 7.113682] [<c00725dc>] (SyS_delete_module+0x124/0x194) from [<c000e2e0>] (ret_fast_syscall+0x0/0x30) [ 7.122957] ---[ end trace 23bb6e4e0bf52196 ]--- Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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8a73cd4cfa159918da405d9645deca842590e2fe |
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16-Oct-2013 |
Naveen Krishna Ch <ch.naveen@samsung.com> |
i2c: exynos5: add High Speed I2C controller driver Adds support for High Speed I2C driver found in Exynos5 and later SoCs from Samsung. Driver only supports Device Tree method. Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Signed-off-by: Taekgyun Ko <taeggyun.ko@samsung.com> Reviewed-by: Simon Glass <sjg@google.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Signed-off-by: Andrew Bresticker <abrestic@google.com> [wsa: rebased to v3.12-rc4 (no of_i2c.h anymore)] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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