![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
On several places, whitespaces are being used for indentation, or even at the end of the line. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
202 lines
5.4 KiB
C
202 lines
5.4 KiB
C
/*
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* Abilis Systems Single DVB-T Receiver
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* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include "as102_drv.h"
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#include "as10x_cmd.h"
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/***************************/
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/* FUNCTION DEFINITION */
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/***************************/
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/**
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* as10x_cmd_get_context - Send get context command to AS10x
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* @adap: pointer to AS10x bus adapter
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* @tag: context tag
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* @pvalue: pointer where to store context value read
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*
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* Return 0 on success or negative value in case of error.
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*/
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int as10x_cmd_get_context(struct as10x_bus_adapter_t *adap, uint16_t tag,
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uint32_t *pvalue)
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{
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int error;
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struct as10x_cmd_t *pcmd, *prsp;
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pcmd = adap->cmd;
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prsp = adap->rsp;
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/* prepare command */
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as10x_cmd_build(pcmd, (++adap->cmd_xid),
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sizeof(pcmd->body.context.req));
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/* fill command */
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pcmd->body.context.req.proc_id = cpu_to_le16(CONTROL_PROC_CONTEXT);
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pcmd->body.context.req.tag = cpu_to_le16(tag);
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pcmd->body.context.req.type = cpu_to_le16(GET_CONTEXT_DATA);
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/* send command */
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if (adap->ops->xfer_cmd) {
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error = adap->ops->xfer_cmd(adap,
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(uint8_t *) pcmd,
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sizeof(pcmd->body.context.req)
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+ HEADER_SIZE,
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(uint8_t *) prsp,
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sizeof(prsp->body.context.rsp)
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+ HEADER_SIZE);
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} else {
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error = AS10X_CMD_ERROR;
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}
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if (error < 0)
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goto out;
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/* parse response: context command do not follow the common response */
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/* structure -> specific handling response parse required */
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error = as10x_context_rsp_parse(prsp, CONTROL_PROC_CONTEXT_RSP);
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if (error == 0) {
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/* Response OK -> get response data */
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*pvalue = le32_to_cpu((__force __le32)prsp->body.context.rsp.reg_val.u.value32);
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/* value returned is always a 32-bit value */
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}
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out:
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return error;
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}
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/**
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* as10x_cmd_set_context - send set context command to AS10x
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* @adap: pointer to AS10x bus adapter
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* @tag: context tag
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* @value: value to set in context
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*
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* Return 0 on success or negative value in case of error.
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*/
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int as10x_cmd_set_context(struct as10x_bus_adapter_t *adap, uint16_t tag,
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uint32_t value)
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{
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int error;
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struct as10x_cmd_t *pcmd, *prsp;
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pcmd = adap->cmd;
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prsp = adap->rsp;
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/* prepare command */
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as10x_cmd_build(pcmd, (++adap->cmd_xid),
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sizeof(pcmd->body.context.req));
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/* fill command */
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pcmd->body.context.req.proc_id = cpu_to_le16(CONTROL_PROC_CONTEXT);
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/* pcmd->body.context.req.reg_val.mode initialization is not required */
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pcmd->body.context.req.reg_val.u.value32 = (__force u32)cpu_to_le32(value);
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pcmd->body.context.req.tag = cpu_to_le16(tag);
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pcmd->body.context.req.type = cpu_to_le16(SET_CONTEXT_DATA);
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/* send command */
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if (adap->ops->xfer_cmd) {
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error = adap->ops->xfer_cmd(adap,
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(uint8_t *) pcmd,
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sizeof(pcmd->body.context.req)
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+ HEADER_SIZE,
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(uint8_t *) prsp,
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sizeof(prsp->body.context.rsp)
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+ HEADER_SIZE);
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} else {
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error = AS10X_CMD_ERROR;
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}
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if (error < 0)
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goto out;
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/* parse response: context command do not follow the common response */
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/* structure -> specific handling response parse required */
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error = as10x_context_rsp_parse(prsp, CONTROL_PROC_CONTEXT_RSP);
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out:
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return error;
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}
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/**
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* as10x_cmd_eLNA_change_mode - send eLNA change mode command to AS10x
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* @adap: pointer to AS10x bus adapter
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* @mode: mode selected:
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* - ON : 0x0 => eLNA always ON
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* - OFF : 0x1 => eLNA always OFF
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* - AUTO : 0x2 => eLNA follow hysteresis parameters
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* to be ON or OFF
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*
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* Return 0 on success or negative value in case of error.
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*/
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int as10x_cmd_eLNA_change_mode(struct as10x_bus_adapter_t *adap, uint8_t mode)
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{
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int error;
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struct as10x_cmd_t *pcmd, *prsp;
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pcmd = adap->cmd;
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prsp = adap->rsp;
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/* prepare command */
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as10x_cmd_build(pcmd, (++adap->cmd_xid),
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sizeof(pcmd->body.cfg_change_mode.req));
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/* fill command */
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pcmd->body.cfg_change_mode.req.proc_id =
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cpu_to_le16(CONTROL_PROC_ELNA_CHANGE_MODE);
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pcmd->body.cfg_change_mode.req.mode = mode;
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/* send command */
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if (adap->ops->xfer_cmd) {
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error = adap->ops->xfer_cmd(adap, (uint8_t *) pcmd,
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sizeof(pcmd->body.cfg_change_mode.req)
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+ HEADER_SIZE, (uint8_t *) prsp,
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sizeof(prsp->body.cfg_change_mode.rsp)
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+ HEADER_SIZE);
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} else {
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error = AS10X_CMD_ERROR;
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}
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if (error < 0)
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goto out;
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/* parse response */
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error = as10x_rsp_parse(prsp, CONTROL_PROC_ELNA_CHANGE_MODE_RSP);
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out:
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return error;
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}
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/**
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* as10x_context_rsp_parse - Parse context command response
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* @prsp: pointer to AS10x command response buffer
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* @proc_id: id of the command
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*
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* Since the contex command response does not follow the common
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* response, a specific parse function is required.
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* Return 0 on success or negative value in case of error.
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*/
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int as10x_context_rsp_parse(struct as10x_cmd_t *prsp, uint16_t proc_id)
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{
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int err;
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err = prsp->body.context.rsp.error;
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if ((err == 0) &&
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(le16_to_cpu(prsp->body.context.rsp.proc_id) == proc_id)) {
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return 0;
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}
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return AS10X_CMD_ERROR;
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}
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