src/gdbus/peripheral_gdbus_pwm.c

   1 /*
   2  * Copyright (c) 2016-2017 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <gio/gunixfdlist.h>
  20
  21 #include "peripheral_io.h"
  22 #include "peripheral_gdbus.h"
  23 #include "peripheral_common.h"
  24 #include "peripheral_internal.h"
  25 #include "peripheral_io_gdbus.h"
  26
  27 #define PWM_FD_INDEX_PERIOD      0
  28 #define PWM_FD_INDEX_DUTY_CYCLE  1
  29 #define PWM_FD_INDEX_POLARITY    2
  30 #define PWM_FD_INDEX_ENABLE      3
  31
  32 static PeripheralIoGdbusPwm *pwm_proxy = NULL;
  33
  34 void pwm_proxy_init(void)
  35 {
  36         GError *error = NULL;
  37
  38         if (pwm_proxy != NULL) {
  39                 g_object_ref(pwm_proxy);
  40                 return;
  41         }
  42
  43         pwm_proxy = peripheral_io_gdbus_pwm_proxy_new_for_bus_sync(
  44                 G_BUS_TYPE_SYSTEM,
  45                 G_DBUS_PROXY_FLAGS_NONE,
  46                 PERIPHERAL_GDBUS_NAME,
  47                 PERIPHERAL_GDBUS_PWM_PATH,
  48                 NULL,
  49                 &error);
  50 }
  51
  52 void pwm_proxy_deinit()
  53 {
  54         if (pwm_proxy) {
  55                 g_object_unref(pwm_proxy);
  56                 if (!G_IS_OBJECT(pwm_proxy))
  57                         pwm_proxy = NULL;
  58         }
  59 }
  60
  61 int peripheral_gdbus_pwm_open(peripheral_pwm_h pwm, int chip, int pin)
  62 {
  63         GError *error = NULL;
  64         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
  65         GUnixFDList *fd_list = NULL;
  66
  67         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
  68
  69         if (peripheral_io_gdbus_pwm_call_open_sync(
  70                         pwm_proxy,
  71                         chip,
  72                         pin,
  73                         NULL,
  74                         &pwm->handle,
  75                         &ret,
  76                         &fd_list,
  77                         NULL,
  78                         &error) == FALSE) {
  79                 _E("%s", error->message);
  80                 g_error_free(error);
  81                 return PERIPHERAL_ERROR_UNKNOWN;
  82         }
  83
  84         pwm->fd_period = g_unix_fd_list_get(fd_list, PWM_FD_INDEX_PERIOD, &error);
  85         if (pwm->fd_period < 0) {
  86                 _E("Failed to get fd for pwm period : %s", error->message);
  87                 g_error_free(error);
  88                 ret = PERIPHERAL_ERROR_UNKNOWN;
  89         }
  90
  91         pwm->fd_duty_cycle = g_unix_fd_list_get(fd_list, PWM_FD_INDEX_DUTY_CYCLE, &error);
  92         if (pwm->fd_duty_cycle < 0) {
  93                 _E("Failed to get fd for pwm duty cycle : %s", error->message);
  94                 g_error_free(error);
  95                 ret = PERIPHERAL_ERROR_UNKNOWN;
  96         }
  97
  98         pwm->fd_polarity = g_unix_fd_list_get(fd_list, PWM_FD_INDEX_POLARITY, &error);
  99         if (pwm->fd_polarity < 0) {
 100                 _E("Failed to get fd for pwm polarity : %s", error->message);
 101                 g_error_free(error);
 102                 ret = PERIPHERAL_ERROR_UNKNOWN;
 103         }
 104
 105         pwm->fd_enable = g_unix_fd_list_get(fd_list, PWM_FD_INDEX_ENABLE, &error);
 106         if (pwm->fd_enable < 0) {
 107                 _E("Failed to get fd for pwm enable : %s", error->message);
 108                 g_error_free(error);
 109                 ret = PERIPHERAL_ERROR_UNKNOWN;
 110         }
 111
 112         g_object_unref(fd_list);
 113
 114         return ret;
 115 }
 116
 117 int peripheral_gdbus_pwm_close(peripheral_pwm_h pwm)
 118 {
 119         GError *error = NULL;
 120         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
 121
 122         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
 123
 124         if (peripheral_io_gdbus_pwm_call_close_sync(
 125                         pwm_proxy,
 126                         pwm->handle,
 127                         &ret,
 128                         NULL,
 129                         &error) == FALSE) {
 130                 _E("%s", error->message);
 131                 g_error_free(error);
 132                 return PERIPHERAL_ERROR_UNKNOWN;
 133         }
 134
 135         return ret;
 136 }
 137
 138 int peripheral_gdbus_pwm_set_period(peripheral_pwm_h pwm, int period)
 139 {
 140         GError *error = NULL;
 141         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
 142
 143         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
 144
 145         if (peripheral_io_gdbus_pwm_call_set_period_sync(
 146                         pwm_proxy,
 147                         pwm->handle,
 148                         period,
 149                         &ret,
 150                         NULL,
 151                         &error) == FALSE) {
 152                 _E("%s", error->message);
 153                 g_error_free(error);
 154                 return PERIPHERAL_ERROR_UNKNOWN;
 155         }
 156
 157         return ret;
 158 }
 159
 160 int peripheral_gdbus_pwm_set_duty_cycle(peripheral_pwm_h pwm, int duty_cycle_ns)
 161 {
 162         GError *error = NULL;
 163         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
 164
 165         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
 166
 167         if (peripheral_io_gdbus_pwm_call_set_duty_cycle_sync(
 168                         pwm_proxy,
 169                         pwm->handle,
 170                         duty_cycle_ns,
 171                         &ret,
 172                         NULL,
 173                         &error) == FALSE) {
 174                 _E("%s", error->message);
 175                 g_error_free(error);
 176                 return PERIPHERAL_ERROR_UNKNOWN;
 177         }
 178
 179         return ret;
 180 }
 181
 182 int peripheral_gdbus_pwm_set_polarity(peripheral_pwm_h pwm, peripheral_pwm_polarity_e polarity)
 183 {
 184         GError *error = NULL;
 185         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
 186
 187         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
 188
 189         if (peripheral_io_gdbus_pwm_call_set_polarity_sync(
 190                         pwm_proxy,
 191                         pwm->handle,
 192                         polarity,
 193                         &ret,
 194                         NULL,
 195                         &error) == FALSE) {
 196                 _E("%s", error->message);
 197                 g_error_free(error);
 198                 return PERIPHERAL_ERROR_UNKNOWN;
 199         }
 200
 201         return ret;
 202 }
 203
 204 int peripheral_gdbus_pwm_set_enable(peripheral_pwm_h pwm, bool enable)
 205 {
 206         GError *error = NULL;
 207         peripheral_error_e ret = PERIPHERAL_ERROR_NONE;
 208
 209         if (pwm_proxy == NULL) return PERIPHERAL_ERROR_UNKNOWN;
 210
 211         if (peripheral_io_gdbus_pwm_call_set_enable_sync(
 212                         pwm_proxy,
 213                         pwm->handle,
 214                         enable,
 215                         &ret,
 216                         NULL,
 217                         &error) == FALSE) {
 218                 _E("%s", error->message);
 219                 g_error_free(error);
 220                 return PERIPHERAL_ERROR_UNKNOWN;
 221         }
 222
 223         return ret;
 224 }