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/*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
#include "as102_drv.h"
#include "as10x_types.h"
#include "as10x_cmd.h"
/***************************/
/* FUNCTION DEFINITION */
/***************************/
/**
* as10x_cmd_get_context - Send get context command to AS10x
* @phandle: pointer to AS10x handle
* @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(as10x_handle_t *phandle, uint16_t tag,
uint32_t *pvalue)
{
int error;
struct as10x_cmd_t *pcmd, *prsp;
ENTER();
pcmd = phandle->cmd;
prsp = phandle->rsp;
/* prepare command */
as10x_cmd_build(pcmd, (++phandle->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 (phandle->ops->xfer_cmd) {
error = phandle->ops->xfer_cmd(phandle,
(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(prsp->body.context.rsp.reg_val.u.value32);
/* value returned is always a 32-bit value */
}
out:
LEAVE();
return error;
}
/**
* as10x_cmd_set_context - send set context command to AS10x
* @phandle: pointer to AS10x handle
* @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(as10x_handle_t *phandle, uint16_t tag,
uint32_t value)
{
int error;
struct as10x_cmd_t *pcmd, *prsp;
ENTER();
pcmd = phandle->cmd;
prsp = phandle->rsp;
/* prepare command */
as10x_cmd_build(pcmd, (++phandle->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 = 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 (phandle->ops->xfer_cmd) {
error = phandle->ops->xfer_cmd(phandle,
(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:
LEAVE();
return error;
}
/**
* as10x_cmd_eLNA_change_mode - send eLNA change mode command to AS10x
* @phandle: pointer to AS10x handle
* @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(as10x_handle_t *phandle, uint8_t mode)
{
int error;
struct as10x_cmd_t *pcmd, *prsp;
ENTER();
pcmd = phandle->cmd;
prsp = phandle->rsp;
/* prepare command */
as10x_cmd_build(pcmd, (++phandle->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 (phandle->ops->xfer_cmd) {
error = phandle->ops->xfer_cmd(phandle, (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:
LEAVE();
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 reponse 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;
}
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