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Date: Thu, 28 Oct 2021 00:16:54 +0300 From: Dmitry Osipenko <digetx@...il.com> To: Thierry Reding <thierry.reding@...il.com>, Jonathan Hunter <jonathanh@...dia.com>, Lee Jones <lee.jones@...aro.org>, "Rafael J . Wysocki" <rafael@...nel.org>, Mark Brown <broonie@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Guenter Roeck <linux@...ck-us.net>, Russell King <linux@...linux.org.uk>, Daniel Lezcano <daniel.lezcano@...aro.org>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Ulf Hansson <ulf.hansson@...aro.org> Cc: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>, Geert Uytterhoeven <geert@...ux-m68k.org>, Greg Ungerer <gerg@...ux-m68k.org>, Joshua Thompson <funaho@...ai.org>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Nick Hu <nickhu@...estech.com>, Greentime Hu <green.hu@...il.com>, Vincent Chen <deanbo422@...il.com>, "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, Helge Deller <deller@....de>, Michael Ellerman <mpe@...erman.id.au>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, Yoshinori Sato <ysato@...rs.sourceforge.jp>, Rich Felker <dalias@...c.org>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Juergen Gross <jgross@...e.com>, Stefano Stabellini <sstabellini@...nel.org>, Len Brown <lenb@...nel.org>, Santosh Shilimkar <ssantosh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>, Linus Walleij <linus.walleij@...aro.org>, Chen-Yu Tsai <wens@...e.org>, Jonathan Neuschäfer <j.neuschaefer@....net>, Tony Lindgren <tony@...mide.com>, Liam Girdwood <lgirdwood@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>, Vladimir Zapolskiy <vz@...ia.com>, Avi Fishman <avifishman70@...il.com>, Tomer Maimon <tmaimon77@...il.com>, Tali Perry <tali.perry1@...il.com>, Patrick Venture <venture@...gle.com>, Nancy Yuen <yuenn@...gle.com>, Benjamin Fair <benjaminfair@...gle.com>, Pavel Machek <pavel@....cz>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-csky@...r.kernel.org, linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org, linux-sh@...r.kernel.org, xen-devel@...ts.xenproject.org, linux-acpi@...r.kernel.org, linux-omap@...r.kernel.org, openbmc@...ts.ozlabs.org, linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org Subject: [PATCH v2 24/45] regulator: pfuze100: Use devm_register_power_handler() Use devm_register_power_handler() that replaces global pm_power_off_prepare variable and allows to register multiple power-off handlers. Signed-off-by: Dmitry Osipenko <digetx@...il.com> --- drivers/regulator/pfuze100-regulator.c | 39 ++++++++++---------------- 1 file changed, 15 insertions(+), 24 deletions(-) diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index d60d7d1b7fa2..73d5baf9d3ea 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -10,6 +10,7 @@ #include <linux/of_device.h> #include <linux/regulator/of_regulator.h> #include <linux/platform_device.h> +#include <linux/reboot.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/pfuze100.h> @@ -76,6 +77,7 @@ struct pfuze_chip { struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR]; struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR]; struct pfuze_regulator *pfuze_regulators; + struct power_handler power_handler; }; static const int pfuze100_swbst[] = { @@ -569,10 +571,10 @@ static inline struct device_node *match_of_node(int index) return pfuze_matches[index].of_node; } -static struct pfuze_chip *syspm_pfuze_chip; - -static void pfuze_power_off_prepare(void) +static void pfuze_power_off_prepare(struct power_off_prep_data *data) { + struct pfuze_chip *syspm_pfuze_chip = data->cb_data; + dev_info(syspm_pfuze_chip->dev, "Configure standby mode for power off"); /* Switch from default mode: APS/APS to APS/Off */ @@ -611,24 +613,24 @@ static void pfuze_power_off_prepare(void) static int pfuze_power_off_prepare_init(struct pfuze_chip *pfuze_chip) { + int err; + if (pfuze_chip->chip_id != PFUZE100) { dev_warn(pfuze_chip->dev, "Requested pm_power_off_prepare handler for not supported chip\n"); return -ENODEV; } - if (pm_power_off_prepare) { - dev_warn(pfuze_chip->dev, "pm_power_off_prepare is already registered.\n"); - return -EBUSY; - } + pfuze_chip->power_handler.power_off_prepare_cb = pfuze_power_off_prepare; + pfuze_chip->power_handler.cb_data = pfuze_chip; - if (syspm_pfuze_chip) { - dev_warn(pfuze_chip->dev, "syspm_pfuze_chip is already set.\n"); - return -EBUSY; + err = devm_register_power_handler(pfuze_chip->dev, + &pfuze_chip->power_handler); + if (err) { + dev_err(pfuze_chip->dev, + "failed to register power handler: %d\n", err); + return err; } - syspm_pfuze_chip = pfuze_chip; - pm_power_off_prepare = pfuze_power_off_prepare; - return 0; } @@ -837,23 +839,12 @@ static int pfuze100_regulator_probe(struct i2c_client *client, return 0; } -static int pfuze100_regulator_remove(struct i2c_client *client) -{ - if (syspm_pfuze_chip) { - syspm_pfuze_chip = NULL; - pm_power_off_prepare = NULL; - } - - return 0; -} - static struct i2c_driver pfuze_driver = { .driver = { .name = "pfuze100-regulator", .of_match_table = pfuze_dt_ids, }, .probe = pfuze100_regulator_probe, - .remove = pfuze100_regulator_remove, }; module_i2c_driver(pfuze_driver); -- 2.33.1
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