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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | /* * Abilis Systems Single DVB-T Receiver * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/kernel.h> #include "as102_drv.h" #include "as10x_cmd.h" /***************************/ /* FUNCTION DEFINITION */ /***************************/ /** * as10x_cmd_get_context - Send get context command to AS10x * @adap: pointer to AS10x bus adapter * @tag: context tag * @pvalue: pointer where to store context value read * * Return 0 on success or negative value in case of error. */ int as10x_cmd_get_context(struct as10x_bus_adapter_t *adap, uint16_t tag, uint32_t *pvalue) { int error; struct as10x_cmd_t *pcmd, *prsp; pcmd = adap->cmd; prsp = adap->rsp; /* prepare command */ as10x_cmd_build(pcmd, (++adap->cmd_xid), sizeof(pcmd->body.context.req)); /* fill command */ pcmd->body.context.req.proc_id = cpu_to_le16(CONTROL_PROC_CONTEXT); pcmd->body.context.req.tag = cpu_to_le16(tag); pcmd->body.context.req.type = cpu_to_le16(GET_CONTEXT_DATA); /* send command */ if (adap->ops->xfer_cmd) { error = adap->ops->xfer_cmd(adap, (uint8_t *) pcmd, sizeof(pcmd->body.context.req) + HEADER_SIZE, (uint8_t *) prsp, sizeof(prsp->body.context.rsp) + HEADER_SIZE); } else { error = AS10X_CMD_ERROR; } if (error < 0) goto out; /* parse response: context command do not follow the common response */ /* structure -> specific handling response parse required */ error = as10x_context_rsp_parse(prsp, CONTROL_PROC_CONTEXT_RSP); if (error == 0) { /* Response OK -> get response data */ *pvalue = le32_to_cpu((__force __le32)prsp->body.context.rsp.reg_val.u.value32); /* value returned is always a 32-bit value */ } out: return error; } /** * as10x_cmd_set_context - send set context command to AS10x * @adap: pointer to AS10x bus adapter * @tag: context tag * @value: value to set in context * * Return 0 on success or negative value in case of error. */ int as10x_cmd_set_context(struct as10x_bus_adapter_t *adap, uint16_t tag, uint32_t value) { int error; struct as10x_cmd_t *pcmd, *prsp; pcmd = adap->cmd; prsp = adap->rsp; /* prepare command */ as10x_cmd_build(pcmd, (++adap->cmd_xid), sizeof(pcmd->body.context.req)); /* fill command */ pcmd->body.context.req.proc_id = cpu_to_le16(CONTROL_PROC_CONTEXT); /* pcmd->body.context.req.reg_val.mode initialization is not required */ pcmd->body.context.req.reg_val.u.value32 = (__force u32)cpu_to_le32(value); pcmd->body.context.req.tag = cpu_to_le16(tag); pcmd->body.context.req.type = cpu_to_le16(SET_CONTEXT_DATA); /* send command */ if (adap->ops->xfer_cmd) { error = adap->ops->xfer_cmd(adap, (uint8_t *) pcmd, sizeof(pcmd->body.context.req) + HEADER_SIZE, (uint8_t *) prsp, sizeof(prsp->body.context.rsp) + HEADER_SIZE); } else { error = AS10X_CMD_ERROR; } if (error < 0) goto out; /* parse response: context command do not follow the common response */ /* structure -> specific handling response parse required */ error = as10x_context_rsp_parse(prsp, CONTROL_PROC_CONTEXT_RSP); out: return error; } /** * as10x_cmd_eLNA_change_mode - send eLNA change mode command to AS10x * @adap: pointer to AS10x bus adapter * @mode: mode selected: * - ON : 0x0 => eLNA always ON * - OFF : 0x1 => eLNA always OFF * - AUTO : 0x2 => eLNA follow hysteresis parameters * to be ON or OFF * * Return 0 on success or negative value in case of error. */ int as10x_cmd_eLNA_change_mode(struct as10x_bus_adapter_t *adap, uint8_t mode) { int error; struct as10x_cmd_t *pcmd, *prsp; pcmd = adap->cmd; prsp = adap->rsp; /* prepare command */ as10x_cmd_build(pcmd, (++adap->cmd_xid), sizeof(pcmd->body.cfg_change_mode.req)); /* fill command */ pcmd->body.cfg_change_mode.req.proc_id = cpu_to_le16(CONTROL_PROC_ELNA_CHANGE_MODE); pcmd->body.cfg_change_mode.req.mode = mode; /* send command */ if (adap->ops->xfer_cmd) { error = adap->ops->xfer_cmd(adap, (uint8_t *) pcmd, sizeof(pcmd->body.cfg_change_mode.req) + HEADER_SIZE, (uint8_t *) prsp, sizeof(prsp->body.cfg_change_mode.rsp) + HEADER_SIZE); } else { error = AS10X_CMD_ERROR; } if (error < 0) goto out; /* parse response */ error = as10x_rsp_parse(prsp, CONTROL_PROC_ELNA_CHANGE_MODE_RSP); out: return error; } /** * as10x_context_rsp_parse - Parse context command response * @prsp: pointer to AS10x command response buffer * @proc_id: id of the command * * Since the contex command response does not follow the common * response, a specific parse function is required. * Return 0 on success or negative value in case of error. */ int as10x_context_rsp_parse(struct as10x_cmd_t *prsp, uint16_t proc_id) { int err; err = prsp->body.context.rsp.error; if ((err == 0) && (le16_to_cpu(prsp->body.context.rsp.proc_id) == proc_id)) { return 0; } return AS10X_CMD_ERROR; } |