c_wufeng | 39755e6 | 2016-01-29 10:42:44 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
Parth Dixit | 42dc264 | 2015-06-19 16:48:22 +0530 | [diff] [blame] | 12 | * * Neither the name of The Linux Foundation, nor the names of its |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <debug.h> |
| 30 | #include <reg.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <pm8x41.h> |
| 33 | #include <pm8x41_hw.h> |
| 34 | #include <kernel/timer.h> |
c_wufeng | 637fd17 | 2015-09-21 18:53:56 +0800 | [diff] [blame] | 35 | #include <kernel/thread.h> |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 36 | #include <platform/timer.h> |
| 37 | #include <shutdown_detect.h> |
vijay kumar | 4f4405f | 2014-08-08 11:49:53 +0530 | [diff] [blame] | 38 | #include <platform.h> |
| 39 | #include <target.h> |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 40 | |
c_wufeng | 39755e6 | 2016-01-29 10:42:44 +0800 | [diff] [blame] | 41 | /* |
| 42 | * Sleep clock is 32.768 khz, 0x8000 count per second. |
| 43 | * Set long press wait time to 500ms to benefit boot time. |
| 44 | */ |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 45 | #define MPM_SLEEP_TIMETICK_COUNT 0x8000 |
c_wufeng | 39755e6 | 2016-01-29 10:42:44 +0800 | [diff] [blame] | 46 | #define PWRKEY_LONG_PRESS_COUNT 0x4000 |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 47 | #define QPNP_DEFAULT_TIMEOUT 250 |
| 48 | #define PWRKEY_DETECT_FREQUENCY 50 |
| 49 | |
| 50 | static struct timer pon_timer; |
| 51 | static uint32_t pon_timer_complete = 0; |
| 52 | |
| 53 | /* |
| 54 | * Function to check if the the power key is pressed long enough. |
| 55 | * Return 0 if boot time more than PWRKEY_LONG_PRESS_COUNT. |
| 56 | * Return 1 if boot time less than PWRKEY_LONG_PRESS_COUNT. |
| 57 | */ |
| 58 | static uint32_t is_pwrkey_time_expired() |
| 59 | { |
| 60 | /* power on button tied in with PMIC KPDPWR. */ |
| 61 | uint32_t sclk_count = platform_get_sclk_count(); |
| 62 | |
| 63 | /* Here check if the long press power-key lasts for 1.5s */ |
| 64 | if (sclk_count > PWRKEY_LONG_PRESS_COUNT) |
| 65 | return 0; |
| 66 | else |
| 67 | return 1; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * Function to check if the power on reason is power key triggered. |
| 72 | * Return 1 if it is triggered by power key. |
| 73 | * Return 0 if it is not triggered by power key. |
| 74 | */ |
| 75 | static uint32_t is_pwrkey_pon_reason() |
| 76 | { |
Parth Dixit | 42dc264 | 2015-06-19 16:48:22 +0530 | [diff] [blame] | 77 | #if PMI_CONFIGURED |
| 78 | return target_is_pwrkey_pon_reason(); |
| 79 | #else |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 80 | uint8_t pon_reason = pm8x41_get_pon_reason(); |
| 81 | |
| 82 | if (pm8x41_get_is_cold_boot() && (pon_reason == KPDPWR_N)) |
| 83 | return 1; |
| 84 | else |
| 85 | return 0; |
Parth Dixit | 42dc264 | 2015-06-19 16:48:22 +0530 | [diff] [blame] | 86 | #endif |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | /* |
| 90 | * Main timer handle: check every PWRKEY_DETECT_FREQUENCY to see |
| 91 | * if power key is pressed. |
| 92 | * Shutdown the device if power key is release before |
| 93 | * (PWRKEY_LONG_PRESS_COUNT/MPM_SLEEP_TIMETICK_COUNT) seconds. |
| 94 | */ |
| 95 | static enum handler_return long_press_pwrkey_timer_func(struct timer *p_timer, |
| 96 | void *arg) |
| 97 | { |
| 98 | uint32_t sclk_count = platform_get_sclk_count(); |
| 99 | |
| 100 | /* |
| 101 | * The following condition is treated as the power key |
| 102 | * is pressed long enough. |
| 103 | * 1. if the power key is pressed last for PWRKEY_LONG_PRESS_COUNT. |
| 104 | */ |
| 105 | if (sclk_count > PWRKEY_LONG_PRESS_COUNT) { |
| 106 | timer_cancel(p_timer); |
| 107 | pon_timer_complete = 1; |
| 108 | } else { |
| 109 | if (pm8x41_get_pwrkey_is_pressed()) { |
| 110 | /* |
| 111 | * For normal man response is > 0.1 secs, so we use 0.05 secs default |
| 112 | * for software to be safely detect if there is a key release action. |
| 113 | */ |
| 114 | timer_set_oneshot(p_timer, PWRKEY_DETECT_FREQUENCY, |
vijay kumar | 4f4405f | 2014-08-08 11:49:53 +0530 | [diff] [blame] | 115 | (timer_callback)long_press_pwrkey_timer_func, NULL); |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 116 | } else { |
| 117 | shutdown_device(); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | return INT_RESCHEDULE; |
| 122 | } |
| 123 | |
| 124 | /* |
| 125 | * Function to wait until the power key is pressed long enough |
| 126 | */ |
| 127 | static void wait_for_long_pwrkey_pressed() |
| 128 | { |
| 129 | uint32_t sclk_count = 0; |
| 130 | |
| 131 | while (!pon_timer_complete) { |
| 132 | sclk_count = platform_get_sclk_count(); |
| 133 | if (sclk_count > PWRKEY_LONG_PRESS_COUNT) { |
| 134 | timer_cancel(&pon_timer); |
| 135 | break; |
| 136 | } |
c_wufeng | 637fd17 | 2015-09-21 18:53:56 +0800 | [diff] [blame] | 137 | thread_sleep(1); |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 138 | } |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * Function to support for shutdown detection |
| 143 | * If below condition is met, the function will shut down |
| 144 | * the device. Otherwise it will do nothing and return to |
| 145 | * normal boot. |
| 146 | * condition: |
| 147 | * 1. it is triggered by power key && |
| 148 | * 2. the power key is released before |
| 149 | * (PWRKEY_LONG_PRESS_COUNT/MPM_SLEEP_TIMETICK_COUNT) seconds. |
| 150 | */ |
| 151 | void shutdown_detect() |
| 152 | { |
| 153 | /* |
| 154 | * If it is booted by power key tirigger. |
| 155 | * Initialize pon_timer and call long_press_pwrkey_timer_func |
| 156 | * function to check if the power key is last press long enough. |
| 157 | */ |
c_wufeng | 637fd17 | 2015-09-21 18:53:56 +0800 | [diff] [blame] | 158 | if (is_pwrkey_pon_reason()) { |
| 159 | if(!pm8x41_get_pwrkey_is_pressed()){ |
| 160 | shutdown_device(); |
| 161 | } |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 162 | timer_initialize(&pon_timer); |
vijay kumar | 4f4405f | 2014-08-08 11:49:53 +0530 | [diff] [blame] | 163 | timer_set_oneshot(&pon_timer, 0,(timer_callback)long_press_pwrkey_timer_func, NULL); |
Matthew Qin | 82323d8 | 2014-02-11 16:28:50 +0800 | [diff] [blame] | 164 | |
| 165 | /* |
| 166 | * Wait until long press power key timeout |
| 167 | * |
| 168 | * It will be confused to end users if we shutdown the device |
| 169 | * after the splash screen displayed. But it can be moved the |
| 170 | * wait here if the boot time is much more considered. |
| 171 | */ |
| 172 | wait_for_long_pwrkey_pressed(); |
| 173 | } |
| 174 | } |