/drivers/staging/sbe-2t3e3/exar7250.c

https://bitbucket.org/slukk/jb-tsm-kernel-4.2 · C · 217 lines · 166 code · 27 blank · 24 comment · 6 complexity · 18a7324bf0e4964e0f99dffc6f411b08 MD5 · raw file 

    

  1. /*
    2. 

  2.  * SBE 2T3E3 synchronous serial card driver for Linux
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl>
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify it
    7. 

  7.  * under the terms of version 2 of the GNU General Public License
    8. 

  8.  * as published by the Free Software Foundation.
    9. 

  9.  *
    10. 

  10.  * This code is based on a driver written by SBE Inc.
    11. 

  11.  */
    12. 

  12. 

  13. #include "2t3e3.h"
    14. 

  14. #include "ctrl.h"
    15. 

  15. 

  16. void exar7250_init(struct channel *sc)
    17. 

  17. {
    18. 

  18. 	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE,
    19. 

  19. 		       SBE_2T3E3_FRAMER_VAL_T3_CBIT |
    20. 

  20. 		       SBE_2T3E3_FRAMER_VAL_INTERRUPT_ENABLE_RESET |
    21. 

  21. 		       SBE_2T3E3_FRAMER_VAL_TIMING_ASYNCH_TXINCLK);
    22. 

  22. 

  23. 	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL,
    24. 

  24. 		       SBE_2T3E3_FRAMER_VAL_DISABLE_TX_LOSS_OF_CLOCK |
    25. 

  25. 		       SBE_2T3E3_FRAMER_VAL_DISABLE_RX_LOSS_OF_CLOCK |
    26. 

  26. 		       SBE_2T3E3_FRAMER_VAL_AMI_LINE_CODE |
    27. 

  27. 		       SBE_2T3E3_FRAMER_VAL_RX_LINE_CLOCK_INVERT);
    28. 

  28. 

  29. 	exar7250_set_frame_type(sc, SBE_2T3E3_FRAME_TYPE_T3_CBIT);
    30. 

  30. }
    31. 

  31. 

  32. void exar7250_set_frame_type(struct channel *sc, u32 type)
    33. 

  33. {
    34. 

  34. 	u32 val;
    35. 

  35. 

  36. 	switch (type) {
    37. 

  37. 	case SBE_2T3E3_FRAME_TYPE_E3_G751:
    38. 

  38. 	case SBE_2T3E3_FRAME_TYPE_E3_G832:
    39. 

  39. 	case SBE_2T3E3_FRAME_TYPE_T3_CBIT:
    40. 

  40. 	case SBE_2T3E3_FRAME_TYPE_T3_M13:
    41. 

  41. 		break;
    42. 

  42. 	default:
    43. 

  43. 		return;
    44. 

  44. 	}
    45. 

  45. 

  46. 	exar7250_stop_intr(sc, type);
    47. 

  47. 

  48. 	val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE);
    49. 

  49. 	val &= ~(SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE |
    50. 

  50. 		 SBE_2T3E3_FRAMER_VAL_T3_E3_SELECT |
    51. 

  51. 		 SBE_2T3E3_FRAMER_VAL_FRAME_FORMAT_SELECT);
    52. 

  52. 	switch (type) {
    53. 

  53. 	case SBE_2T3E3_FRAME_TYPE_E3_G751:
    54. 

  54. 		val |= SBE_2T3E3_FRAMER_VAL_E3_G751;
    55. 

  55. 		break;
    56. 

  56. 	case SBE_2T3E3_FRAME_TYPE_E3_G832:
    57. 

  57. 		val |= SBE_2T3E3_FRAMER_VAL_E3_G832;
    58. 

  58. 		break;
    59. 

  59. 	case SBE_2T3E3_FRAME_TYPE_T3_CBIT:
    60. 

  60. 		val |= SBE_2T3E3_FRAMER_VAL_T3_CBIT;
    61. 

  61. 		break;
    62. 

  62. 	case SBE_2T3E3_FRAME_TYPE_T3_M13:
    63. 

  63. 		val |= SBE_2T3E3_FRAMER_VAL_T3_M13;
    64. 

  64. 		break;
    65. 

  65. 	default:
    66. 

  66. 		return;
    67. 

  67. 	}
    68. 

  68. 	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE, val);
    69. 

  69. 	exar7250_start_intr(sc, type);
    70. 

  70. }
    71. 

  71. 

  72. 

  73. void exar7250_start_intr(struct channel *sc, u32 type)
    74. 

  74. {
    75. 

  75. 	u32 val;
    76. 

  76. 

  77. 	switch (type) {
    78. 

  78. 	case SBE_2T3E3_FRAME_TYPE_E3_G751:
    79. 

  79. 	case SBE_2T3E3_FRAME_TYPE_E3_G832:
    80. 

  80. 		val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_CONFIGURATION_STATUS_2);
    81. 

  81. #if 0
    82. 

  82. 		sc->s.LOS = val & SBE_2T3E3_FRAMER_VAL_E3_RX_LOS ? 1 : 0;
    83. 

  83. #else
    84. 

  84. 		cpld_LOS_update(sc);
    85. 

  85. #endif
    86. 

  86. 		sc->s.OOF = val & SBE_2T3E3_FRAMER_VAL_E3_RX_OOF ? 1 : 0;
    87. 

  87. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_1);
    88. 

  88. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_1,
    89. 

  89. 			       SBE_2T3E3_FRAMER_VAL_E3_RX_OOF_INTERRUPT_ENABLE |
    90. 

  90. 			       SBE_2T3E3_FRAMER_VAL_E3_RX_LOS_INTERRUPT_ENABLE);
    91. 

  91. #if 0
    92. 

  92. 		/*SBE_2T3E3_FRAMER_VAL_E3_RX_COFA_INTERRUPT_ENABLE |
    93. 

  93. 		  SBE_2T3E3_FRAMER_VAL_E3_RX_OOF_INTERRUPT_ENABLE |
    94. 

  94. 		  SBE_2T3E3_FRAMER_VAL_E3_RX_LOF_INTERRUPT_ENABLE |
    95. 

  95. 		  SBE_2T3E3_FRAMER_VAL_E3_RX_LOS_INTERRUPT_ENABLE |
    96. 

  96. 		  SBE_2T3E3_FRAMER_VAL_E3_RX_AIS_INTERRUPT_ENABLE);*/
    97. 

  97. #endif
    98. 

  98. 

  99. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_2);
    100. 

  100. #if 0
    101. 

  101. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_2,
    102. 

  102. 			       SBE_2T3E3_FRAMER_VAL_E3_RX_FEBE_INTERRUPT_ENABLE |
    103. 

  103. 			       SBE_2T3E3_FRAMER_VAL_E3_RX_FERF_INTERRUPT_ENABLE |
    104. 

  104. 			       SBE_2T3E3_FRAMER_VAL_E3_RX_FRAMING_BYTE_ERROR_INTERRUPT_ENABLE);
    105. 

  105. #endif
    106. 

  106. 		break;
    107. 

  107. 

  108. 	case SBE_2T3E3_FRAME_TYPE_T3_CBIT:
    109. 

  109. 	case SBE_2T3E3_FRAME_TYPE_T3_M13:
    110. 

  110. 		val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_CONFIGURATION_STATUS);
    111. 

  111. #if 0
    112. 

  112. 		sc->s.LOS = val & SBE_2T3E3_FRAMER_VAL_T3_RX_LOS ? 1 : 0;
    113. 

  113. #else
    114. 

  114. 		cpld_LOS_update(sc);
    115. 

  115. #endif
    116. 

  116. 		sc->s.OOF = val & SBE_2T3E3_FRAMER_VAL_T3_RX_OOF ? 1 : 0;
    117. 

  117. 

  118. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_STATUS);
    119. 

  119. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_ENABLE,
    120. 

  120. 			       SBE_2T3E3_FRAMER_VAL_T3_RX_LOS_INTERRUPT_ENABLE |
    121. 

  121. 			       SBE_2T3E3_FRAMER_VAL_T3_RX_OOF_INTERRUPT_ENABLE);
    122. 

  122. #if 0
    123. 

  123. 		/* SBE_2T3E3_FRAMER_VAL_T3_RX_CP_BIT_ERROR_INTERRUPT_ENABLE |
    124. 

  124. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_LOS_INTERRUPT_ENABLE |
    125. 

  125. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_AIS_INTERRUPT_ENABLE |
    126. 

  126. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_IDLE_INTERRUPT_ENABLE |
    127. 

  127. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_FERF_INTERRUPT_ENABLE |
    128. 

  128. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_AIC_INTERRUPT_ENABLE |
    129. 

  129. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_OOF_INTERRUPT_ENABLE |
    130. 

  130. 		   SBE_2T3E3_FRAMER_VAL_T3_RX_P_BIT_INTERRUPT_ENABLE);*/
    131. 

  131. #endif
    132. 

  132. 

  133. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS);
    134. 

  134. #if 0
    135. 

  135. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS,
    136. 

  136. 			       SBE_2T3E3_FRAMER_VAL_T3_RX_FEAC_REMOVE_INTERRUPT_ENABLE |
    137. 

  137. 			       SBE_2T3E3_FRAMER_VAL_T3_RX_FEAC_VALID_INTERRUPT_ENABLE);
    138. 

  138. #endif
    139. 

  139. 

  140. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL, 0);
    141. 

  141. 		break;
    142. 

  142. 

  143. 	default:
    144. 

  144. 		return;
    145. 

  145. 	}
    146. 

  146. 

  147. 	exar7250_read(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_STATUS);
    148. 

  148. 	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_ENABLE,
    149. 

  149. 		       SBE_2T3E3_FRAMER_VAL_RX_INTERRUPT_ENABLE |
    150. 

  150. 		       SBE_2T3E3_FRAMER_VAL_TX_INTERRUPT_ENABLE);
    151. 

  151. }
    152. 

  152. 

  153. 

  154. void exar7250_stop_intr(struct channel *sc, u32 type)
    155. 

  155. {
    156. 

  156. 	exar7250_write(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_ENABLE, 0);
    157. 

  157. 	exar7250_read(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_STATUS);
    158. 

  158. 

  159. 	switch (type) {
    160. 

  160. 	case SBE_2T3E3_FRAME_TYPE_E3_G751:
    161. 

  161. 	case SBE_2T3E3_FRAME_TYPE_E3_G832:
    162. 

  162. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_1, 0);
    163. 

  163. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_1);
    164. 

  164. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_2, 0);
    165. 

  165. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_2);
    166. 

  166. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_LAPD_CONTROL, 0);
    167. 

  167. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_LAPD_CONTROL);
    168. 

  168. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_TX_LAPD_STATUS, 0);
    169. 

  169. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_TX_LAPD_STATUS);
    170. 

  170. 		break;
    171. 

  171. 

  172. 	case SBE_2T3E3_FRAME_TYPE_T3_CBIT:
    173. 

  173. 	case SBE_2T3E3_FRAME_TYPE_T3_M13:
    174. 

  174. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_ENABLE, 0);
    175. 

  175. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_STATUS);
    176. 

  176. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS, 0);
    177. 

  177. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS);
    178. 

  178. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL, 0);
    179. 

  179. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL);
    180. 

  180. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_TX_FEAC_CONFIGURATION_STATUS, 0);
    181. 

  181. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_FEAC_CONFIGURATION_STATUS);
    182. 

  182. 		exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_TX_LAPD_STATUS, 0);
    183. 

  183. 		exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_LAPD_STATUS);
    184. 

  184. 		break;
    185. 

  185. 	}
    186. 

  186. }
    187. 

  187. 

  188. 

  189. 

  190. 

  191. void exar7250_unipolar_onoff(struct channel *sc, u32 mode)
    192. 

  192. {
    193. 

  193. 	switch (mode) {
    194. 

  194. 	case SBE_2T3E3_OFF:
    195. 

  195. 		exar7300_clear_bit(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL,
    196. 

  196. 				   SBE_2T3E3_FRAMER_VAL_UNIPOLAR);
    197. 

  197. 		break;
    198. 

  198. 	case SBE_2T3E3_ON:
    199. 

  199. 		exar7300_set_bit(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL,
    200. 

  200. 				 SBE_2T3E3_FRAMER_VAL_UNIPOLAR);
    201. 

  201. 		break;
    202. 

  202. 	}
    203. 

  203. }
    204. 

  204. 

  205. void exar7250_set_loopback(struct channel *sc, u32 mode)
    206. 

  206. {
    207. 

  207. 	switch (mode) {
    208. 

  208. 	case SBE_2T3E3_FRAMER_VAL_LOOPBACK_OFF:
    209. 

  209. 		exar7300_clear_bit(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE,
    210. 

  210. 				   SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE);
    211. 

  211. 		break;
    212. 

  212. 	case SBE_2T3E3_FRAMER_VAL_LOOPBACK_ON:
    213. 

  213. 		exar7300_set_bit(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE,
    214. 

  214. 				 SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE);
    215. 

  215. 		break;
    216. 

  216. 	}
    217. 

  217. }
    218.