drivers/opp/core.c:2092: warning: Function parameter or member 'config_clks' not described in '_opp_set_clknames'

From: kernel test robot
Date: Sun Sep 10 2023 - 02:11:52 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 535a265d7f0dd50d8c3a4f8b4f3a452d56bd160f
commit: 2083da24eb56ce622332946800a67a7449d85fe5 OPP: Allow multiple clocks for a device
date: 1 year, 2 months ago
config: csky-defconfig (https://download.01.org/0day-ci/archive/20230910/202309101424.6IVOgtMf-lkp@xxxxxxxxx/config)
compiler: csky-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230910/202309101424.6IVOgtMf-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309101424.6IVOgtMf-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

drivers/opp/core.c:1904: warning: Function parameter or member 'opp_table' not described in '_opp_set_supported_hw'
drivers/opp/core.c:1904: warning: Excess function parameter 'dev' description in '_opp_set_supported_hw'
drivers/opp/core.c:1947: warning: Function parameter or member 'opp_table' not described in '_opp_set_prop_name'
drivers/opp/core.c:1947: warning: Excess function parameter 'dev' description in '_opp_set_prop_name'
drivers/opp/core.c:1988: warning: Function parameter or member 'opp_table' not described in '_opp_set_regulators'
drivers/opp/core.c:1988: warning: Excess function parameter 'count' description in '_opp_set_regulators'
drivers/opp/core.c:2092: warning: Function parameter or member 'opp_table' not described in '_opp_set_clknames'
>> drivers/opp/core.c:2092: warning: Function parameter or member 'config_clks' not described in '_opp_set_clknames'
drivers/opp/core.c:2190: warning: Function parameter or member 'opp_table' not described in '_opp_set_config_regulators_helper'
drivers/opp/core.c:2254: warning: Function parameter or member 'opp_table' not described in '_opp_attach_genpd'
drivers/opp/core.c:2481: warning: Function parameter or member 'token' not described in 'dev_pm_opp_clear_config'
drivers/opp/core.c:2481: warning: Excess function parameter 'opp_table' description in 'dev_pm_opp_clear_config'

vim +2092 drivers/opp/core.c

38393409da345c drivers/base/power/opp.c Viresh Kumar 2014-11-25 1890
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1891 /**
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1892 * _opp_set_supported_hw() - Set supported platforms
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1893 * @dev: Device for which supported-hw has to be set.
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1894 * @versions: Array of hierarchy of versions to match.
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1895 * @count: Number of elements in the array.
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1896 *
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1897 * This is required only for the V2 bindings, and it enables a platform to
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1898 * specify the hierarchy of versions it supports. OPP layer will then enable
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1899 * OPPs, which are available for those versions, based on its 'opp-supported-hw'
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1900 * property.
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1901 */
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1902 static int _opp_set_supported_hw(struct opp_table *opp_table,
fa30184d192ec7 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 1903 const u32 *versions, unsigned int count)
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 @1904 {
25419de1b8dda2 drivers/opp/core.c Viresh Kumar 2018-05-22 1905 /* Another CPU that shares the OPP table has set the property ? */
25419de1b8dda2 drivers/opp/core.c Viresh Kumar 2018-05-22 1906 if (opp_table->supported_hw)
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1907 return 0;
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1908
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1909 opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions),
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1910 GFP_KERNEL);
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1911 if (!opp_table->supported_hw)
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1912 return -ENOMEM;
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1913
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1914 opp_table->supported_hw_count = count;
fa30184d192ec7 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 1915
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1916 return 0;
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1917 }
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1918
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1919 /**
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1920 * _opp_put_supported_hw() - Releases resources blocked for supported hw
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1921 * @opp_table: OPP table returned by _opp_set_supported_hw().
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1922 *
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1923 * This is required only for the V2 bindings, and is called for a matching
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1924 * _opp_set_supported_hw(). Until this is called, the opp_table structure
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1925 * will not be freed.
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1926 */
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1927 static void _opp_put_supported_hw(struct opp_table *opp_table)
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1928 {
89f03984fa2abf drivers/opp/core.c Viresh Kumar 2022-05-26 1929 if (opp_table->supported_hw) {
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1930 kfree(opp_table->supported_hw);
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1931 opp_table->supported_hw = NULL;
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1932 opp_table->supported_hw_count = 0;
7de36b0aa51a5a drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1933 }
9c4f220f3dc260 drivers/opp/core.c Yangtao Li 2021-03-14 1934 }
9c4f220f3dc260 drivers/opp/core.c Yangtao Li 2021-03-14 1935
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1936 /**
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1937 * _opp_set_prop_name() - Set prop-extn name
a5da64477ee79e drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1938 * @dev: Device for which the prop-name has to be set.
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1939 * @name: name to postfix to properties.
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1940 *
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1941 * This is required only for the V2 bindings, and it enables a platform to
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1942 * specify the extn to be used for certain property names. The properties to
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1943 * which the extension will apply are opp-microvolt and opp-microamp. OPP core
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1944 * should postfix the property name with -<name> while looking for them.
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1945 */
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1946 static int _opp_set_prop_name(struct opp_table *opp_table, const char *name)
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1947 {
878ec1a9f0e5a6 drivers/opp/core.c Viresh Kumar 2018-05-22 1948 /* Another CPU that shares the OPP table has set the property ? */
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1949 if (!opp_table->prop_name) {
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1950 opp_table->prop_name = kstrdup(name, GFP_KERNEL);
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1951 if (!opp_table->prop_name)
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1952 return -ENOMEM;
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1953 }
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1954
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1955 return 0;
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1956 }
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1957
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1958 /**
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1959 * _opp_put_prop_name() - Releases resources blocked for prop-name
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1960 * @opp_table: OPP table returned by _opp_set_prop_name().
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1961 *
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1962 * This is required only for the V2 bindings, and is called for a matching
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1963 * _opp_set_prop_name(). Until this is called, the opp_table structure
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1964 * will not be freed.
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1965 */
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1966 static void _opp_put_prop_name(struct opp_table *opp_table)
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1967 {
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1968 if (opp_table->prop_name) {
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1969 kfree(opp_table->prop_name);
2c2709dc6921c5 drivers/base/power/opp/core.c Viresh Kumar 2016-02-16 1970 opp_table->prop_name = NULL;
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1971 }
298098e55a6fcc drivers/opp/core.c Viresh Kumar 2022-05-26 1972 }
01fb4d3c39d35b drivers/base/power/opp/core.c Viresh Kumar 2015-12-09 1973
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1974 /**
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 1975 * _opp_set_regulators() - Set regulator names for the device
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1976 * @dev: Device for which regulator name is being set.
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 1977 * @names: Array of pointers to the names of the regulator.
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 1978 * @count: Number of regulators.
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1979 *
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1980 * In order to support OPP switching, OPP layer needs to know the name of the
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 1981 * device's regulators, as the core would be required to switch voltages as
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 1982 * well.
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1983 *
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1984 * This must be called before any OPPs are initialized for the device.
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1985 */
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 1986 static int _opp_set_regulators(struct opp_table *opp_table, struct device *dev,
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1987 const char * const names[])
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1988 {
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1989 const char * const *temp = names;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1990 struct regulator *reg;
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1991 int count = 0, ret, i;
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1992
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1993 /* Count number of regulators */
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1994 while (*temp++)
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1995 count++;
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1996
87686cc845c3be drivers/opp/core.c Viresh Kumar 2022-07-04 1997 if (!count)
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 1998 return -EINVAL;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1999
779b783cfaa726 drivers/opp/core.c Viresh Kumar 2018-05-22 2000 /* Another CPU that shares the OPP table has set the regulators ? */
779b783cfaa726 drivers/opp/core.c Viresh Kumar 2018-05-22 2001 if (opp_table->regulators)
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2002 return 0;
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2003
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2004 opp_table->regulators = kmalloc_array(count,
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2005 sizeof(*opp_table->regulators),
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2006 GFP_KERNEL);
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2007 if (!opp_table->regulators)
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2008 return -ENOMEM;
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2009
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2010 for (i = 0; i < count; i++) {
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2011 reg = regulator_get_optional(dev, names[i]);
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2012 if (IS_ERR(reg)) {
543256d239b415 drivers/opp/core.c Krzysztof Kozlowski 2022-04-08 2013 ret = dev_err_probe(dev, PTR_ERR(reg),
543256d239b415 drivers/opp/core.c Krzysztof Kozlowski 2022-04-08 2014 "%s: no regulator (%s) found\n",
543256d239b415 drivers/opp/core.c Krzysztof Kozlowski 2022-04-08 2015 __func__, names[i]);
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2016 goto free_regulators;
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2017 }
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2018
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2019 opp_table->regulators[i] = reg;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2020 }
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2021
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2022 opp_table->regulator_count = count;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2023
c522ce8a08066b drivers/opp/core.c Viresh Kumar 2022-05-31 2024 /* Set generic config_regulators() for single regulators here */
c522ce8a08066b drivers/opp/core.c Viresh Kumar 2022-05-31 2025 if (count == 1)
c522ce8a08066b drivers/opp/core.c Viresh Kumar 2022-05-31 2026 opp_table->config_regulators = _opp_config_regulator_single;
c522ce8a08066b drivers/opp/core.c Viresh Kumar 2022-05-31 2027
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2028 return 0;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2029
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2030 free_regulators:
24957db1004353 drivers/opp/core.c Marek Szyprowski 2019-10-17 2031 while (i != 0)
24957db1004353 drivers/opp/core.c Marek Szyprowski 2019-10-17 2032 regulator_put(opp_table->regulators[--i]);
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2033
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2034 kfree(opp_table->regulators);
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2035 opp_table->regulators = NULL;
46f48aca2e5aef drivers/opp/core.c Viresh Kumar 2018-12-11 2036 opp_table->regulator_count = -1;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2037
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2038 return ret;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2039 }
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2040
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2041 /**
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2042 * _opp_put_regulators() - Releases resources blocked for regulator
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2043 * @opp_table: OPP table returned from _opp_set_regulators().
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2044 */
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2045 static void _opp_put_regulators(struct opp_table *opp_table)
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2046 {
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2047 int i;
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2048
779b783cfaa726 drivers/opp/core.c Viresh Kumar 2018-05-22 2049 if (!opp_table->regulators)
b0ec09428621da drivers/opp/core.c Viresh Kumar 2022-07-04 2050 return;
9f8ea969d5cfdd drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 2051
72f80ce4ef9b75 drivers/opp/core.c Viresh Kumar 2020-08-13 2052 if (opp_table->enabled) {
8d45719caaf56c drivers/opp/core.c Kamil Konieczny 2019-07-19 2053 for (i = opp_table->regulator_count - 1; i >= 0; i--)
8d45719caaf56c drivers/opp/core.c Kamil Konieczny 2019-07-19 2054 regulator_disable(opp_table->regulators[i]);
8d45719caaf56c drivers/opp/core.c Kamil Konieczny 2019-07-19 2055 }
8d45719caaf56c drivers/opp/core.c Kamil Konieczny 2019-07-19 2056
24957db1004353 drivers/opp/core.c Marek Szyprowski 2019-10-17 2057 for (i = opp_table->regulator_count - 1; i >= 0; i--)
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2058 regulator_put(opp_table->regulators[i]);
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2059
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2060 kfree(opp_table->regulators);
dfbe4678d709e2 drivers/base/power/opp/core.c Viresh Kumar 2016-12-01 2061 opp_table->regulators = NULL;
46f48aca2e5aef drivers/opp/core.c Viresh Kumar 2018-12-11 2062 opp_table->regulator_count = -1;
32aee78bc5184c drivers/opp/core.c Yangtao Li 2021-03-14 2063 }
32aee78bc5184c drivers/opp/core.c Yangtao Li 2021-03-14 2064
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2065 static void _put_clks(struct opp_table *opp_table, int count)
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2066 {
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2067 int i;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2068
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2069 for (i = count - 1; i >= 0; i--)
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2070 clk_put(opp_table->clks[i]);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2071
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2072 kfree(opp_table->clks);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2073 opp_table->clks = NULL;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2074 }
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2075
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2076 /**
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2077 * _opp_set_clknames() - Set clk names for the device
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2078 * @dev: Device for which clk names is being set.
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2079 * @names: Clk names.
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2080 *
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2081 * In order to support OPP switching, OPP layer needs to get pointers to the
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2082 * clocks for the device. Simple cases work fine without using this routine
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2083 * (i.e. by passing connection-id as NULL), but for a device with multiple
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2084 * clocks available, the OPP core needs to know the exact names of the clks to
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2085 * use.
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2086 *
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2087 * This must be called before any OPPs are initialized for the device.
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2088 */
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2089 static int _opp_set_clknames(struct opp_table *opp_table, struct device *dev,
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2090 const char * const names[],
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2091 config_clks_t config_clks)
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 @2092 {
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2093 const char * const *temp = names;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2094 int count = 0, ret, i;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2095 struct clk *clk;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2096
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2097 /* Count number of clks */
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2098 while (*temp++)
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2099 count++;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2100
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2101 /*
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2102 * This is a special case where we have a single clock, whose connection
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2103 * id name is NULL, i.e. first two entries are NULL in the array.
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2104 */
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2105 if (!count && !names[1])
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2106 count = 1;
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2107
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2108 /* Fail early for invalid configurations */
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2109 if (!count || (config_clks && count == 1) || (!config_clks && count > 1))
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2110 return -EINVAL;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2111
0a43452bb6b1f4 drivers/opp/core.c Viresh Kumar 2022-05-25 2112 /* Another CPU that shares the OPP table has set the clkname ? */
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2113 if (opp_table->clks)
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2114 return 0;
0a43452bb6b1f4 drivers/opp/core.c Viresh Kumar 2022-05-25 2115
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2116 opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks),
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2117 GFP_KERNEL);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2118 if (!opp_table->clks)
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2119 return -ENOMEM;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2120
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2121 /* Find clks for the device */
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2122 for (i = 0; i < count; i++) {
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2123 clk = clk_get(dev, names[i]);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2124 if (IS_ERR(clk)) {
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2125 ret = dev_err_probe(dev, PTR_ERR(clk),
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2126 "%s: Couldn't find clock with name: %s\n",
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2127 __func__, names[i]);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2128 goto free_clks;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2129 }
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2130
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2131 opp_table->clks[i] = clk;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2132 }
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2133
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2134 opp_table->clk_count = count;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2135
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2136 /* Set generic single clk set here */
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2137 if (count == 1) {
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2138 opp_table->config_clks = _opp_config_clk_single;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2139
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2140 /*
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2141 * We could have just dropped the "clk" field and used "clks"
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2142 * everywhere. Instead we kept the "clk" field around for
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2143 * following reasons:
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2144 *
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2145 * - avoiding clks[0] everywhere else.
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2146 * - not running single clk helpers for multiple clk usecase by
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2147 * mistake.
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2148 *
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2149 * Since this is single-clk case, just update the clk pointer
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2150 * too.
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2151 */
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2152 opp_table->clk = opp_table->clks[0];
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2153 } else {
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2154 opp_table->config_clks = config_clks;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2155 }
0a43452bb6b1f4 drivers/opp/core.c Viresh Kumar 2022-05-25 2156
2368f57685768f drivers/opp/core.c Viresh Kumar 2022-05-26 2157 return 0;
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2158
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2159 free_clks:
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2160 _put_clks(opp_table, i);
2083da24eb56ce drivers/opp/core.c Viresh Kumar 2022-06-10 2161 return ret;
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2162 }
829a4e8c0e9aab drivers/base/power/opp/core.c Viresh Kumar 2017-06-21 2163

:::::: The code at line 2092 was first introduced by commit
:::::: 829a4e8c0e9aab17bcfe2ddb070388b8ada26292 PM / OPP: Add dev_pm_opp_{set|put}_clkname()

:::::: TO: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
:::::: CC: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

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