diff options
author | Abhimanyu Kapur <abhimany@codeaurora.org> | 2013-07-30 20:05:28 -0400 |
---|---|---|
committer | Anton Vorontsov <anton@enomsg.org> | 2013-08-09 14:47:53 -0400 |
commit | 78be3176c4335b8ff3d9625ed3fc571e7d2ba8f4 (patch) | |
tree | 08a71d66ac0069147b18f76e3265f7b9b8bbbc84 /drivers/power/reset | |
parent | 68ace3e1886b94925c73e08702437f6dcd539a4d (diff) |
power: reset: Add msm restart support
Add support for restart and poweroff functionality present on MSM chipsets
with the MPM2 ps-hold hardware.
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Diffstat (limited to 'drivers/power/reset')
-rw-r--r-- | drivers/power/reset/Kconfig | 6 | ||||
-rw-r--r-- | drivers/power/reset/Makefile | 1 | ||||
-rw-r--r-- | drivers/power/reset/msm-poweroff.c | 73 |
3 files changed, 80 insertions, 0 deletions
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index ee039dcead04..94122906f9cf 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig | |||
@@ -14,6 +14,12 @@ config POWER_RESET_GPIO | |||
14 | If your board needs a GPIO high/low to power down, say Y and | 14 | If your board needs a GPIO high/low to power down, say Y and |
15 | create a binding in your devicetree. | 15 | create a binding in your devicetree. |
16 | 16 | ||
17 | config POWER_RESET_MSM | ||
18 | bool "Qualcomm MSM power-off driver" | ||
19 | depends on POWER_RESET && ARCH_MSM | ||
20 | help | ||
21 | Power off and restart support for Qualcomm boards. | ||
22 | |||
17 | config POWER_RESET_QNAP | 23 | config POWER_RESET_QNAP |
18 | bool "QNAP power-off driver" | 24 | bool "QNAP power-off driver" |
19 | depends on OF_GPIO && POWER_RESET && PLAT_ORION | 25 | depends on OF_GPIO && POWER_RESET && PLAT_ORION |
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index 372807fd83f7..b82288e99e92 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile | |||
@@ -1,4 +1,5 @@ | |||
1 | obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o | 1 | obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o |
2 | obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o | ||
2 | obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o | 3 | obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o |
3 | obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o | 4 | obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o |
4 | obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o | 5 | obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o |
diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c new file mode 100644 index 000000000000..774f9a3b310d --- /dev/null +++ b/drivers/power/reset/msm-poweroff.c | |||
@@ -0,0 +1,73 @@ | |||
1 | /* Copyright (c) 2013, The Linux Foundation. All rights reserved. | ||
2 | * | ||
3 | * This program is free software; you can redistribute it and/or modify | ||
4 | * it under the terms of the GNU General Public License version 2 and | ||
5 | * only version 2 as published by the Free Software Foundation. | ||
6 | * | ||
7 | * This program is distributed in the hope that it will be useful, | ||
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
10 | * GNU General Public License for more details. | ||
11 | * | ||
12 | */ | ||
13 | |||
14 | #include <linux/delay.h> | ||
15 | #include <linux/err.h> | ||
16 | #include <linux/init.h> | ||
17 | #include <linux/kernel.h> | ||
18 | #include <linux/io.h> | ||
19 | #include <linux/of.h> | ||
20 | #include <linux/platform_device.h> | ||
21 | #include <linux/module.h> | ||
22 | #include <linux/reboot.h> | ||
23 | |||
24 | #include <asm/system_misc.h> | ||
25 | |||
26 | static void __iomem *msm_ps_hold; | ||
27 | |||
28 | static void do_msm_restart(enum reboot_mode reboot_mode, const char *cmd) | ||
29 | { | ||
30 | writel(0, msm_ps_hold); | ||
31 | mdelay(10000); | ||
32 | } | ||
33 | |||
34 | static void do_msm_poweroff(void) | ||
35 | { | ||
36 | /* TODO: Add poweroff capability */ | ||
37 | do_msm_restart(REBOOT_HARD, NULL); | ||
38 | } | ||
39 | |||
40 | static int msm_restart_probe(struct platform_device *pdev) | ||
41 | { | ||
42 | struct device *dev = &pdev->dev; | ||
43 | struct resource *mem; | ||
44 | |||
45 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
46 | msm_ps_hold = devm_ioremap_resource(dev, mem); | ||
47 | if (IS_ERR(msm_ps_hold)) | ||
48 | return PTR_ERR(msm_ps_hold); | ||
49 | |||
50 | pm_power_off = do_msm_poweroff; | ||
51 | arm_pm_restart = do_msm_restart; | ||
52 | return 0; | ||
53 | } | ||
54 | |||
55 | static const struct of_device_id of_msm_restart_match[] = { | ||
56 | { .compatible = "qcom,pshold", }, | ||
57 | {}, | ||
58 | }; | ||
59 | MODULE_DEVICE_TABLE(of, of_msm_restart_match); | ||
60 | |||
61 | static struct platform_driver msm_restart_driver = { | ||
62 | .probe = msm_restart_probe, | ||
63 | .driver = { | ||
64 | .name = "msm-restart", | ||
65 | .of_match_table = of_match_ptr(of_msm_restart_match), | ||
66 | }, | ||
67 | }; | ||
68 | |||
69 | static int __init msm_restart_init(void) | ||
70 | { | ||
71 | return platform_driver_register(&msm_restart_driver); | ||
72 | } | ||
73 | device_initcall(msm_restart_init); | ||