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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 44 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091651.032047323@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
192 lines
5 KiB
C
192 lines
5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#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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