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path: root/drivers/clk/clk-lmk04832.c
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2022-12-09clk: lmk04832: fix kernel-doc warningsLiam Beguin1-9/+9
Fix syntax generating the following kernel-doc warnings: drivers/clk/clk-lmk04832.c:189: warning: cannot understand function prototype: 'struct lmk04832_device_info ' drivers/clk/clk-lmk04832.c:193: warning: Function parameter or member 'pid' not described in 'lmk04832_device_info' drivers/clk/clk-lmk04832.c:193: warning: Function parameter or member 'maskrev' not described in 'lmk04832_device_info' drivers/clk/clk-lmk04832.c:193: warning: Function parameter or member 'num_channels' not described in 'lmk04832_device_info' drivers/clk/clk-lmk04832.c:193: warning: Function parameter or member 'vco0_range' not described in 'lmk04832_device_info' drivers/clk/clk-lmk04832.c:193: warning: Function parameter or member 'vco1_range' not described in 'lmk04832_device_info' drivers/clk/clk-lmk04832.c:420: warning: No description found for return value of 'lmk04832_check_vco_ranges' drivers/clk/clk-lmk04832.c:459: warning: No description found for return value of 'lmk04832_calc_pll2_params' Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20221120030257.531153-5-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-12-09clk: lmk04832: drop superfluous #includeLiam Beguin1-2/+0
iwyu warnings: (new ones prefixed by >>) >> drivers/clk/clk-lmk04832.c:15:1: iwyu: warning: superfluous #include <linux/debugfs.h> >> drivers/clk/clk-lmk04832.c:20:1: iwyu: warning: superfluous #include <linux/uaccess.h> Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/all/202107110620.926Sm95z-lkp@intel.com/ Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20221120030257.531153-4-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-12-09clk: lmk04832: drop unnecessary semicolonsLiam Beguin1-8/+9
Semicolons on the closing brace of a function definition are unnecessary, remove them. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20221120030257.531153-3-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-12-09clk: lmk04832: declare variables as const when possibleLiam Beguin1-2/+2
Fix the following warning reported by the kernel test robot. cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> drivers/clk/clk-lmk04832.c:357:15: warning: Variable 'pll2_p' can be declared with const [constVariable] unsigned int pll2_p[] = {8, 2, 2, 3, 4, 5, 6, 7}; Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/all/202203312017.5YW13Jr4-lkp@intel.com/ Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20221120030257.531153-2-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-02-09spi: make remove callback a void functionUwe Kleine-König1-3/+1
The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Claudius Heine <ch@denx.de> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC Acked-by: Marcus Folkesson <marcus.folkesson@gmail.com> Acked-by: Łukasz Stelmach <l.stelmach@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
2021-07-27clk: lmk04832: drop redundant fallthrough statementsLiam Beguin1-18/+0
When the body of a case statement is empty, it is well understood that it is intentional and explicit fallthrough statements are not required. Drop them. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20210708211645.3621902-1-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-30clk: lmk04832: Fix spelling mistakes in dev_err messages and commentsColin Ian King1-4/+4
There are handful of spelling mistakes in two dev_err error messages and comments. Fix them. Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20210629102956.17901-1-colin.king@canonical.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-30clk: lmk04832: fix return value check in lmk04832_probe()Wang Hai1-6/+6
In case of error, the function devm_kzalloc() and devm_kcalloc() return NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: 3bc61cfd6f4a ("clk: add support for the lmk04832") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Link: https://lore.kernel.org/r/20210630020322.2555946-1-wanghai38@huawei.com Reviewed-by: Liam Beguin <lvb@xiphos.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-29clk: lmk04832: Use of match tableStephen Boyd1-2/+4
Presumably we want to use this match table so add a module device table and set the driver match pointer appropriately. Reported-by: kernel test robot <lkp@intel.com> Cc: Liam Beguin <lvb@xiphos.com> Fixes: 3bc61cfd6f4a ("clk: add support for the lmk04832") Link: https://lore.kernel.org/r/20210629060751.3119453-2-sboyd@kernel.org Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-28clk: lmk04832: add support for digital delayLiam Beguin1-6/+315
The digital delay allows outputs to be delayed from 8 to 1023 VCO cycles. The delay step can be as small as half the period of the clock distribution path. For example, a 3.2-GHz VCO frequency results in 156.25-ps steps. The digital delay value takes effect on the clock output phase after a SYNC event. This is required to support JESD204B subclass 1. Signed-off-by: Liam Beguin <lvb@xiphos.com> Link: https://lore.kernel.org/r/20210423004057.283926-3-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-28clk: add support for the lmk04832Liam Beguin1-0/+1288
The LMK04832 is an ultra-high performance clock conditioner with JEDEC JESD204B support and is also pin compatible with the LMK0482x family of devices. Signed-off-by: Liam Beguin <lvb@xiphos.com> Link: https://lore.kernel.org/r/20210423004057.283926-2-liambeguin@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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