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Date: Thu, 28 Oct 2021 00:16:59 +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 29/45] mfd: acer-a500: Use devm_register_power_handler()
Use devm_register_power_handler() that replaces global pm_power_off
variable and allows to register multiple power-off handlers. It also
provides restart-handler support, i.e. all in one API.
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
drivers/mfd/acer-ec-a500.c | 52 ++++++++++++++------------------------
1 file changed, 19 insertions(+), 33 deletions(-)
diff --git a/drivers/mfd/acer-ec-a500.c b/drivers/mfd/acer-ec-a500.c
index 80c2fdd14fc4..fc864abc0049 100644
--- a/drivers/mfd/acer-ec-a500.c
+++ b/drivers/mfd/acer-ec-a500.c
@@ -31,8 +31,6 @@ enum {
REG_COLD_REBOOT = 0x55,
};
-static struct i2c_client *a500_ec_client_pm_off;
-
static int a500_ec_read(void *context, const void *reg_buf, size_t reg_size,
void *val_buf, size_t val_sizel)
{
@@ -104,32 +102,35 @@ static const struct regmap_bus a500_ec_regmap_bus = {
.max_raw_read = 2,
};
-static void a500_ec_poweroff(void)
+static void a500_ec_power_off_handler(struct power_off_data *data)
{
- i2c_smbus_write_word_data(a500_ec_client_pm_off,
- REG_SHUTDOWN, CMD_SHUTDOWN);
+ struct i2c_client *client = data->cb_data;
+
+ i2c_smbus_write_word_data(client, REG_SHUTDOWN, CMD_SHUTDOWN);
mdelay(A500_EC_POWER_CMD_TIMEOUT);
}
-static int a500_ec_restart_notify(struct notifier_block *this,
- unsigned long reboot_mode, void *data)
+static void a500_ec_restart_handler(struct restart_data *data)
{
- if (reboot_mode == REBOOT_WARM)
- i2c_smbus_write_word_data(a500_ec_client_pm_off,
+ struct i2c_client *client = data->cb_data;
+
+ if (data->mode == REBOOT_WARM)
+ i2c_smbus_write_word_data(client,
REG_WARM_REBOOT, CMD_WARM_REBOOT);
else
- i2c_smbus_write_word_data(a500_ec_client_pm_off,
+ i2c_smbus_write_word_data(client,
REG_COLD_REBOOT, CMD_COLD_REBOOT);
mdelay(A500_EC_POWER_CMD_TIMEOUT);
-
- return NOTIFY_DONE;
}
-static struct notifier_block a500_ec_restart_handler = {
- .notifier_call = a500_ec_restart_notify,
- .priority = 200,
+static struct power_handler a500_ec_power_handler = {
+ .restart_cb = a500_ec_restart_handler,
+ .restart_priority = RESTART_PRIO_HIGH,
+
+ .power_off_cb = a500_ec_power_off_handler,
+ .power_off_priority = POWEROFF_PRIO_HIGH,
};
static const struct mfd_cell a500_ec_cells[] = {
@@ -156,26 +157,12 @@ static int a500_ec_probe(struct i2c_client *client)
}
if (of_device_is_system_power_controller(client->dev.of_node)) {
- a500_ec_client_pm_off = client;
+ a500_ec_power_handler.cb_data = client;
- err = register_restart_handler(&a500_ec_restart_handler);
+ err = devm_register_power_handler(&client->dev,
+ &a500_ec_power_handler);
if (err)
return err;
-
- if (!pm_power_off)
- pm_power_off = a500_ec_poweroff;
- }
-
- return 0;
-}
-
-static int a500_ec_remove(struct i2c_client *client)
-{
- if (of_device_is_system_power_controller(client->dev.of_node)) {
- if (pm_power_off == a500_ec_poweroff)
- pm_power_off = NULL;
-
- unregister_restart_handler(&a500_ec_restart_handler);
}
return 0;
@@ -193,7 +180,6 @@ static struct i2c_driver a500_ec_driver = {
.of_match_table = a500_ec_match,
},
.probe_new = a500_ec_probe,
- .remove = a500_ec_remove,
};
module_i2c_driver(a500_ec_driver);
--
2.33.1
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