net: wireless: rockchip_wlan: add rtl8723cs support
[firefly-linux-kernel-4.4.55.git] / drivers / net / wireless / rockchip_wlan / rtl8723cs / hal / phydm / phydm_psd.c
1 /******************************************************************************\r
2  *\r
3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.\r
4  *                                        \r
5  * This program is free software; you can redistribute it and/or modify it\r
6  * under the terms of version 2 of the GNU General Public License as\r
7  * published by the Free Software Foundation.\r
8  *\r
9  * This program is distributed in the hope that it will be useful, but WITHOUT\r
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for\r
12  * more details.\r
13  *\r
14  * You should have received a copy of the GNU General Public License along with\r
15  * this program; if not, write to the Free Software Foundation, Inc.,\r
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA\r
17  *\r
18  *\r
19  ******************************************************************************/\r
20 \r
21 //============================================================\r
22 // include files\r
23 //============================================================\r
24 #include "mp_precomp.h"
25 #include "phydm_precomp.h"\r
26 \r
27 #if (CONFIG_PSD_TOOL == 1)\r
28 \r
29 u32\r
30 phydm_get_psd_data(\r
31         void                    *p_dm_void,\r
32         u32                     psd_tone_idx,\r
33         u32                     igi\r
34         )\r
35 {\r
36         struct  PHY_DM_STRUCT   *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
37         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
38         u32             psd_report = 0;\r
39         \r
40         odm_set_bb_reg(p_dm_odm, p_dm_psd_table->psd_reg, 0x3ff, psd_tone_idx);\r
41         \r
42         odm_set_bb_reg(p_dm_odm, p_dm_psd_table->psd_reg, BIT(22), 1); /*PSD trigger start*/\r
43         ODM_delay_us(10);\r
44         odm_set_bb_reg(p_dm_odm, p_dm_psd_table->psd_reg, BIT(22), 0); /*PSD trigger stop*/\r
45 \r
46         psd_report = odm_get_bb_reg(p_dm_odm, p_dm_psd_table->psd_report_reg, 0xffff);\r
47         psd_report = odm_convert_to_db(psd_report) + igi;\r
48 \r
49         return psd_report;\r
50 }\r
51 \r
52 u8\r
53 phydm_psd_stop_trx(\r
54         void            *p_dm_void\r
55         )\r
56 {\r
57         struct  PHY_DM_STRUCT   *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
58         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
59         u32             i;\r
60         u8              trx_idle_success = FALSE;\r
61         u32             dbg_port_value = 0;\r
62 \r
63         /*[Stop TRX]---------------------------------------------------------------------*/\r
64         if (phydm_set_bb_dbg_port(p_dm_odm, BB_DBGPORT_PRIORITY_3, 0x0) == FALSE) /*set debug port to 0x0*/\r
65                 return STOP_TRX_FAIL;\r
66         \r
67         for (i = 0; i<10000; i++) {\r
68                 dbg_port_value = phydm_get_bb_dbg_port_value(p_dm_odm);\r
69                 if ((dbg_port_value & (BIT(17) | BIT(3))) == 0) /* PHYTXON && CCA_all */ {\r
70                         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("PSD wait for ((%d)) times\n", i));\r
71                         \r
72                         trx_idle_success = TRUE;\r
73                         break;\r
74                 }\r
75         }\r
76         \r
77         if (trx_idle_success) {\r
78                 \r
79                 odm_set_bb_reg(p_dm_odm, 0x520, 0xff0000, 0xff); /*pause all TX queue*/\r
80                 \r
81                 if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
82                         odm_set_bb_reg(p_dm_odm, 0x808, BIT(28), 0); /*disable CCK block*/\r
83                         odm_set_bb_reg(p_dm_odm, 0x838, BIT(1), 1); /*disable OFDM RX CCA*/\r
84                 } else {\r
85                         /*TBD*/\r
86                         odm_set_bb_reg(p_dm_odm, 0x800, BIT(24), 0); /* disable whole CCK block */\r
87                         odm_set_bb_reg(p_dm_odm, 0xC14, MASKDWORD, 0x0); /* [ Set IQK Matrix = 0 ] equivalent to [ Turn off CCA] */\r
88                 }\r
89                         \r
90         } else {\r
91                 return STOP_TRX_FAIL;\r
92         }\r
93 \r
94         phydm_release_bb_dbg_port(p_dm_odm);\r
95         \r
96         return STOP_TRX_SUCCESS;\r
97         \r
98 }\r
99 \r
100 u8              psd_result_cali_tone_8821[7]= {21, 28, 33, 93, 98, 105, 127};\r
101 u8              psd_result_cali_val_8821[7] = {67,69,71,72,71,69,67};   \r
102 \r
103 void\r
104 phydm_psd(\r
105         void            *p_dm_void,\r
106         u32             igi,\r
107         u16             start_point,\r
108         u16             stop_point\r
109         )\r
110 {\r
111         struct  PHY_DM_STRUCT   *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
112         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
113         u32             i = 0, mod_tone_idx;\r
114         u32             t = 0;\r
115         u16             fft_max_half_bw;\r
116         u32             psd_igi_a_reg;\r
117         u32             psd_igi_b_reg;\r
118         u16             psd_fc_channel = p_dm_psd_table->psd_fc_channel;\r
119         u8              ag_rf_mode_reg = 0;\r
120         u8              rf_reg18_9_8 = 0;\r
121         u32             psd_result_tmp = 0;\r
122         u8              psd_result = 0;\r
123         u8              psd_result_cali_tone[7] = {0};\r
124         u8              psd_result_cali_val[7] = {0};\r
125         u8              noise_table_idx = 0;\r
126         u8              psd_result_cali_tmp = 0;\r
127 \r
128         if (p_dm_odm->support_ic_type == ODM_RTL8821) {\r
129                 odm_move_memory(p_dm_odm, psd_result_cali_tone, psd_result_cali_tone_8821, 7);\r
130                 odm_move_memory(p_dm_odm, psd_result_cali_val, psd_result_cali_val_8821, 7);\r
131         }\r
132         \r
133         p_dm_psd_table->psd_in_progress = 1;\r
134 \r
135         /*[Stop DIG]*/\r
136         p_dm_odm->support_ability &= ~(ODM_BB_DIG);\r
137         p_dm_odm->support_ability &= ~(ODM_BB_FA_CNT);\r
138 \r
139 \r
140 \r
141         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("PSD Start =>\n"));\r
142 \r
143         if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
144                 psd_igi_a_reg = 0xc50;\r
145                 psd_igi_b_reg = 0xe50;\r
146         } else {\r
147                 psd_igi_a_reg = 0xc50;\r
148                 psd_igi_b_reg = 0xc58;\r
149         }\r
150         \r
151         /*[back up IGI]*/\r
152         p_dm_psd_table->initial_gain_backup = odm_get_bb_reg(p_dm_odm, psd_igi_a_reg, 0xff); \r
153         odm_set_bb_reg(p_dm_odm, psd_igi_a_reg, 0xff, 0x6e); /*IGI target at 0dBm & make it can't CCA*/\r
154         odm_set_bb_reg(p_dm_odm, psd_igi_b_reg, 0xff, 0x6e); /*IGI target at 0dBm & make it can't CCA*/\r
155         ODM_delay_us(10);\r
156         \r
157         if (phydm_psd_stop_trx(p_dm_odm) == STOP_TRX_FAIL) {\r
158                 ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("STOP_TRX_FAIL\n"));\r
159                 return;\r
160         }\r
161 \r
162         /*[Set IGI]*/\r
163         odm_set_bb_reg(p_dm_odm, psd_igi_a_reg, 0xff, igi);\r
164         odm_set_bb_reg(p_dm_odm, psd_igi_b_reg, 0xff, igi);\r
165         \r
166         /*[Backup RF Reg]*/\r
167         p_dm_psd_table->rf_0x18_bkp = odm_get_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, RFREGOFFSETMASK);\r
168 \r
169         if (psd_fc_channel > 14) {\r
170                 \r
171                 rf_reg18_9_8 = 1;\r
172                 \r
173                 if (36 <= psd_fc_channel && psd_fc_channel <= 64) \r
174                         ag_rf_mode_reg = 0x1;\r
175                 else if (100 <= psd_fc_channel && psd_fc_channel <= 140) \r
176                         ag_rf_mode_reg = 0x3; \r
177                 else if (140 < psd_fc_channel) \r
178                         ag_rf_mode_reg = 0x5; \r
179         }\r
180 \r
181         odm_set_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, 0xff, psd_fc_channel);     /* Set RF fc*/\r
182         odm_set_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, 0x300, rf_reg18_9_8);\r
183         odm_set_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, 0xc00, p_dm_psd_table->psd_bw_rf_reg);     /*2b'11: 20MHz, 2b'10: 40MHz, 2b'01: 80MHz */\r
184         odm_set_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, 0xf0000, ag_rf_mode_reg);     /* Set RF ag fc mode*/\r
185 \r
186         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("0xc50=((0x%x))\n", odm_get_bb_reg(p_dm_odm, 0xc50, MASKDWORD)));\r
187         /*ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("RF0x0=((0x%x))\n", odm_get_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x0, RFREGOFFSETMASK)));*/\r
188         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("RF0x18=((0x%x))\n", odm_get_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, RFREGOFFSETMASK)));\r
189         \r
190         /*[Stop 3-wires]*/\r
191         if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
192                 odm_set_bb_reg(p_dm_odm, 0xc00, 0xf, 0x4);/*    hardware 3-wire off */\r
193                 odm_set_bb_reg(p_dm_odm, 0xe00, 0xf, 0x4);/*    hardware 3-wire off */\r
194         } else {\r
195                 odm_set_bb_reg(p_dm_odm, 0x88c, 0xf00000, 0xf); /* 3 wire Disable    88c[23:20]=0xf */\r
196         }\r
197         ODM_delay_us(10);\r
198 \r
199         if (stop_point > (p_dm_psd_table->fft_smp_point-1))\r
200                 stop_point = (p_dm_psd_table->fft_smp_point-1); \r
201 \r
202         if (start_point > (p_dm_psd_table->fft_smp_point-1))\r
203                 start_point = (p_dm_psd_table->fft_smp_point-1);\r
204 \r
205         if (start_point > stop_point)\r
206                 stop_point = start_point;\r
207 \r
208 \r
209         for (i = start_point; i <= stop_point; i++ ) {\r
210 \r
211                 fft_max_half_bw = (p_dm_psd_table->fft_smp_point)>>1;\r
212 \r
213                 if (i < fft_max_half_bw) {\r
214                         mod_tone_idx = i + fft_max_half_bw;\r
215                 } else {\r
216                         mod_tone_idx = i - fft_max_half_bw;\r
217                 }\r
218                 \r
219                 psd_result_tmp = 0;\r
220                 for (t = 0; t < p_dm_psd_table->sw_avg_time; t++) {\r
221                         psd_result_tmp += phydm_get_psd_data(p_dm_odm, mod_tone_idx, igi);\r
222                         /**/\r
223                 }\r
224                 psd_result = (u8)((psd_result_tmp/p_dm_psd_table->sw_avg_time)) - p_dm_psd_table->psd_pwr_common_offset;\r
225 \r
226                 if( p_dm_psd_table->fft_smp_point == 128) {\r
227 \r
228                         if (p_dm_psd_table->noise_k_en) {\r
229                                 if (i > psd_result_cali_tone[noise_table_idx]) {\r
230                                         noise_table_idx ++;\r
231                                 }\r
232 \r
233                                 if (noise_table_idx > 6)\r
234                                         noise_table_idx = 6;\r
235 \r
236                                 if (psd_result >= psd_result_cali_val[noise_table_idx])\r
237                                         psd_result = psd_result - psd_result_cali_val[noise_table_idx];\r
238                                 else\r
239                                         psd_result = 0;\r
240                         }\r
241 \r
242                         p_dm_psd_table->psd_result[i] = psd_result;\r
243                 }\r
244                 \r
245                 ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("[%d] N_cali = %d, PSD = %d\n", mod_tone_idx, psd_result_cali_val[noise_table_idx],  psd_result));\r
246 \r
247         }\r
248 \r
249         /*[Start 3-wires]*/\r
250         if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
251                 odm_set_bb_reg(p_dm_odm, 0xc00, 0xf, 0x7);/*    hardware 3-wire on */\r
252                 odm_set_bb_reg(p_dm_odm, 0xe00, 0xf, 0x7);/*    hardware 3-wire on */\r
253         } else {\r
254                 odm_set_bb_reg(p_dm_odm, 0x88c, 0xf00000, 0x0); /* 3 wire enable    88c[23:20]=0x0 */\r
255         }\r
256         ODM_delay_us(10);\r
257 \r
258         /*[Revert Reg]*/\r
259         odm_set_bb_reg(p_dm_odm, 0x520, 0xff0000, 0x0); /*start all TX queue*/\r
260         odm_set_bb_reg(p_dm_odm, 0x808, BIT(28), 1); /*enable CCK block*/\r
261         odm_set_bb_reg(p_dm_odm, 0x838, BIT(1), 0); /*enable OFDM RX CCA*/\r
262         \r
263         odm_set_bb_reg(p_dm_odm, psd_igi_a_reg, 0xff, p_dm_psd_table->initial_gain_backup);\r
264         odm_set_bb_reg(p_dm_odm, psd_igi_b_reg, 0xff, p_dm_psd_table->initial_gain_backup);\r
265         \r
266         odm_set_rf_reg(p_dm_odm, ODM_RF_PATH_A, 0x18, RFREGOFFSETMASK, p_dm_psd_table->rf_0x18_bkp);\r
267         \r
268         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("PSD finished\n\n"));\r
269         \r
270         p_dm_odm->support_ability |= ODM_BB_DIG;\r
271         p_dm_odm->support_ability |= ODM_BB_FA_CNT;\r
272         p_dm_psd_table->psd_in_progress = 0;\r
273         \r
274 \r
275 }\r
276 \r
277 void\r
278 phydm_psd_para_setting(\r
279         void            *p_dm_void,\r
280         u8              sw_avg_time,\r
281         u8              hw_avg_time,    \r
282         u8              i_q_setting,\r
283         u16             fft_smp_point,\r
284         u8              ant_sel,\r
285         u8              psd_input,\r
286         u8              channel,\r
287         u8              noise_k_en\r
288         )\r
289 {\r
290         struct  PHY_DM_STRUCT   *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
291         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
292         u32             avg_temp;\r
293         u8              fft_smp_point_idx = 0;\r
294 \r
295         p_dm_psd_table->fft_smp_point = fft_smp_point;\r
296 \r
297         if (sw_avg_time == 0)\r
298                 sw_avg_time = 1;\r
299         \r
300         p_dm_psd_table->sw_avg_time = sw_avg_time;\r
301         p_dm_psd_table->psd_fc_channel = channel;\r
302         p_dm_psd_table->noise_k_en = noise_k_en;\r
303                 \r
304         if (fft_smp_point == 128)\r
305                 fft_smp_point_idx = 0;\r
306         else if (fft_smp_point == 256)\r
307                 fft_smp_point_idx = 1;\r
308         else if (fft_smp_point == 512)\r
309                 fft_smp_point_idx = 2;\r
310         else if (fft_smp_point == 1024)\r
311                 fft_smp_point_idx = 3;\r
312                 \r
313         if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
314                 \r
315                 odm_set_bb_reg(p_dm_odm, 0x910, BIT(11) | BIT(10), i_q_setting);\r
316                 odm_set_bb_reg(p_dm_odm, 0x910, BIT(13) | BIT(12), hw_avg_time);\r
317                 odm_set_bb_reg(p_dm_odm, 0x910, BIT(15) | BIT(14), fft_smp_point_idx);\r
318                 odm_set_bb_reg(p_dm_odm, 0x910, BIT(17) | BIT(16), ant_sel);\r
319                 odm_set_bb_reg(p_dm_odm, 0x910, BIT(23), psd_input);\r
320 \r
321         } else {\r
322 \r
323         }\r
324 \r
325         /*bw = (*p_dm_odm->p_band_width); //ODM_BW20M */\r
326         /*channel = *(p_dm_odm->p_channel);*/\r
327         \r
328         \r
329 \r
330 \r
331 }\r
332 \r
333 void\r
334 phydm_psd_init(\r
335         void            *p_dm_void\r
336         )\r
337 {\r
338         struct PHY_DM_STRUCT    *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
339         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
340 \r
341         ODM_RT_TRACE(p_dm_odm, ODM_COMP_API, ODM_DBG_LOUD, ("PSD para init\n"));\r
342 \r
343         p_dm_psd_table->psd_in_progress = FALSE;\r
344         \r
345         if (p_dm_odm->support_ic_type & ODM_IC_11AC_SERIES) {\r
346                 \r
347                 p_dm_psd_table->psd_reg = 0x910;\r
348                 p_dm_psd_table->psd_report_reg = 0xF44;\r
349 \r
350                 if (ODM_IC_11AC_2_SERIES)\r
351                         p_dm_psd_table->psd_bw_rf_reg = 1;      /*2b'11: 20MHz, 2b'10: 40MHz, 2b'01: 80MHz */\r
352                 else\r
353                         p_dm_psd_table->psd_bw_rf_reg = 2;      /*2b'11: 20MHz, 2b'10: 40MHz, 2b'01: 80MHz */\r
354                 \r
355         } else {\r
356         \r
357                 p_dm_psd_table->psd_reg = 0x808;\r
358                 p_dm_psd_table->psd_report_reg = 0x8B4;\r
359                 p_dm_psd_table->psd_bw_rf_reg = 2; /*2b'11: 20MHz, 2b'10: 40MHz, 2b'01: 80MHz */\r
360         }\r
361 \r
362         if (p_dm_odm->support_ic_type == ODM_RTL8812)\r
363                 p_dm_psd_table->psd_pwr_common_offset = 0;\r
364         else if (p_dm_odm->support_ic_type == ODM_RTL8821)\r
365                 p_dm_psd_table->psd_pwr_common_offset = 0;\r
366         else\r
367                 p_dm_psd_table->psd_pwr_common_offset = 0;\r
368         \r
369         phydm_psd_para_setting(p_dm_odm, 1, 2, 3, 128, 0, 0, 7, 0);\r
370         /*phydm_psd(p_dm_odm, 0x3c, 0, 127);*/                  /* target at -50dBm */\r
371 \r
372 \r
373 }\r
374 \r
375 void
376 phydm_psd_debug(\r
377         void            *p_dm_void,
378         char            input[][16],\r
379         u32             *_used,
380         char            *output,\r
381         u32             *_out_len,
382         u32             input_num
383 )
384 {
385         struct PHY_DM_STRUCT    *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;
386         char            help[] = "-h";\r
387         u32             var1[10] = {0};\r
388         u32             used = *_used;\r
389         u32             out_len = *_out_len;\r
390         u8              i;\r
391 \r
392         if ((strcmp(input[1], help) == 0)) {\r
393                 PHYDM_SNPRINTF((output + used, out_len - used, "{0} {sw_avg} {hw_avg 0:3} {1:I,2:Q,3:IQ} {fft_point: 128*(1:4)} {path_sel 0~3} {0:ADC, 1:RXIQC} {CH} {noise_k}\n"));\r
394                 PHYDM_SNPRINTF((output + used, out_len - used, "{1} {IGI(hex)} {start_point} {stop_point}\n"));\r
395 \r
396         } else {\r
397         \r
398 \r
399                 PHYDM_SSCANF(input[1], DCMD_DECIMAL, &var1[0]);\r
400 \r
401                 if (var1[0] == 0) {\r
402 \r
403                         for (i = 1; i < 10; i++) {\r
404                                 if (input[i + 1]) {\r
405                                         PHYDM_SSCANF(input[i + 1], DCMD_DECIMAL, &var1[i]);\r
406                                 }\r
407                         }\r
408                         \r
409                         PHYDM_SNPRINTF((output + used, out_len - used, "sw_avg_time=((%d)), hw_avg_time=((%d)), IQ=((%d)), fft=((%d)), path=((%d)), input =((%d)) ch=((%d)), noise_k=((%d))\n", \r
410                                 var1[1], var1[2], var1[3], var1[4], var1[5], var1[6], (u8)var1[7], (u8)var1[8]));\r
411                         phydm_psd_para_setting(p_dm_odm, (u8)var1[1], (u8)var1[2], (u8)var1[3], (u16)var1[4], (u8)var1[5], (u8)var1[6], (u8)var1[7], (u8)var1[8]);\r
412                         \r
413                 } else if (var1[0] == 1) {\r
414 \r
415                         PHYDM_SSCANF(input[2], DCMD_HEX, &var1[1]);\r
416                         PHYDM_SSCANF(input[3], DCMD_DECIMAL, &var1[2]);\r
417                         PHYDM_SSCANF(input[4], DCMD_DECIMAL, &var1[3]);\r
418                         PHYDM_SNPRINTF((output + used, out_len - used, "IGI=((0x%x)), start_point=((%d)), stop_point=((%d))\n", var1[1], var1[2], var1[3]));\r
419                         p_dm_odm->debug_components |= ODM_COMP_API;\r
420                         phydm_psd(p_dm_odm, var1[1], (u16)var1[2], (u16)var1[3]);\r
421                         p_dm_odm->debug_components &= (~ODM_COMP_API);\r
422                 }\r
423 \r
424         }\r
425 \r
426 \r
427         \r
428 }\r
429 \r
430 u8\r
431 phydm_get_psd_result_table(\r
432         void            *p_dm_void,\r
433         int             index\r
434         )\r
435 {\r
436         struct  PHY_DM_STRUCT   *p_dm_odm = (struct PHY_DM_STRUCT *)p_dm_void;\r
437         struct  _PHYDM_PSD_     *p_dm_psd_table = &(p_dm_odm->dm_psd_table);\r
438         u8              temp_result = 0;\r
439 \r
440         if(index<128)\r
441                 temp_result = p_dm_psd_table->psd_result[index];\r
442 \r
443         return temp_result;\r
444         \r
445 }\r
446 \r
447 #endif\r
448 \r