Release 4.18 drivers/staging/vt6656/power.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * File: power.c
 *
 * Purpose: Handles 802.11 power management functions
 *
 * Author: Lyndon Chen
 *
 * Date: July 17, 2002
 *
 * Functions:
 *      vnt_enable_power_saving - Enable Power Saving Mode
 *      PSvDiasblePowerSaving - Disable Power Saving Mode
 *      vnt_next_tbtt_wakeup - Decide if we need to wake up at next Beacon
 *
 * Revision History:
 *
 */

#include "mac.h"
#include "device.h"
#include "power.h"
#include "wcmd.h"
#include "rxtx.h"
#include "card.h"
#include "usbpipe.h"

/*
 *
 * Routine Description:
 * Enable hw power saving functions
 *
 * Return Value:
 *    None.
 *
 */



void vnt_enable_power_saving(struct vnt_private *priv, u16 listen_interval)
{
	u16 aid = priv->current_aid | BIT(14) | BIT(15);

	/* set period of power up before TBTT */
	vnt_mac_write_word(priv, MAC_REG_PWBT, C_PWBT);

	if (priv->op_mode != NL80211_IFTYPE_ADHOC)
		/* set AID */
		vnt_mac_write_word(priv, MAC_REG_AIDATIM, aid);

	/* Warren:06-18-2004,the sequence must follow
         * PSEN->AUTOSLEEP->GO2DOZE
         */
	/* enable power saving hw function */
	vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_PSEN);

	/* Set AutoSleep */
	vnt_mac_reg_bits_on(priv, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);

	/* Warren:MUST turn on this once before turn on AUTOSLEEP ,or the
         * AUTOSLEEP doesn't work
         */
	vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_GO2DOZE);

	if (listen_interval >= 2) {
		/* clear always listen beacon */
		vnt_mac_reg_bits_off(priv, MAC_REG_PSCTL, PSCTL_ALBCN);

		/* first time set listen next beacon */
		vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_LNBCN);
	} else {
		/* always listen beacon */
		vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_ALBCN);
	}

	dev_dbg(&priv->usb->dev,  "PS:Power Saving Mode Enable...\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Forest Bond
82
57.75%
1
5.88%
Malcolm Priestley
46
32.39%
9
52.94%
Philip Worrall
6
4.23%
2
11.76%
Simon Sandström
2
1.41%
1
5.88%
Andres More
2
1.41%
2
11.76%
Aybuke Ozdemir
2
1.41%
1
5.88%
Alejandro Emanuel Paredes
2
1.41%
1
5.88%
Total
142
100.00%
17
100.00%

/*
 *
 * Routine Description:
 * Disable hw power saving functions
 *
 * Return Value:
 *    None.
 *
 */



void vnt_disable_power_saving(struct vnt_private *priv)
{
	/* disable power saving hw function */
	vnt_control_out(priv, MESSAGE_TYPE_DISABLE_PS, 0,
			0, 0, NULL);

	/* clear AutoSleep */
	vnt_mac_reg_bits_off(priv, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);

	/* set always listen beacon */
	vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_ALBCN);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Forest Bond
31
67.39%
1
10.00%
Malcolm Priestley
10
21.74%
6
60.00%
Philip Worrall
3
6.52%
1
10.00%
Andres More
2
4.35%
2
20.00%
Total
46
100.00%
10
100.00%

/*
 *
 * Routine Description:
 * Check if Next TBTT must wake up
 *
 * Return Value:
 *    None.
 *
 */



int vnt_next_tbtt_wakeup(struct vnt_private *priv)
{
	struct ieee80211_hw *hw = priv->hw;
	struct ieee80211_conf *conf = &hw->conf;
	int wake_up = false;

	if (conf->listen_interval > 1) {
		/* Turn on wake up to listen next beacon */
		vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_LNBCN);
		wake_up = true;
	}

	return wake_up;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Malcolm Priestley
30
49.18%
6
54.55%
Forest Bond
27
44.26%
1
9.09%
Andres More
3
4.92%
3
27.27%
Philip Worrall
1
1.64%
1
9.09%
Total
61
100.00%
11
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Forest Bond
160
58.18%
1
3.45%
Malcolm Priestley
87
31.64%
17
58.62%
Philip Worrall
13
4.73%
2
6.90%
Andres More
7
2.55%
4
13.79%
Simon Sandström
2
0.73%
1
3.45%
Greg Kroah-Hartman
2
0.73%
2
6.90%
Alejandro Emanuel Paredes
2
0.73%
1
3.45%
Aybuke Ozdemir
2
0.73%
1
3.45%
Total
275
100.00%
29
100.00%
Directory: drivers/staging/vt6656

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