/*
 * Copyright (C) ST-Ericsson AB 2010
 * Author:	Sjur Brendeland
 * License terms: GNU General Public License (GPL) version 2
 */

#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>
#include <net/caif/cfpkt.h>

#define container_obj(layr) ((struct cfsrvl *) layr)
#define UTIL_PAYLOAD  0x00
#define UTIL_CMD_BIT  0x80
#define UTIL_REMOTE_SHUTDOWN 0x82
#define UTIL_FLOW_OFF 0x81
#define UTIL_FLOW_ON  0x80

static int cfutill_receive(struct cflayer *layr, struct cfpkt *pkt);
static int cfutill_transmit(struct cflayer *layr, struct cfpkt *pkt);

struct cflayer *cfutill_create(u8 channel_id, struct dev_info *dev_info)
{
	struct cfsrvl *util = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
	if (!util)
		return NULL;
	caif_assert(offsetof(struct cfsrvl, layer) == 0);
	cfsrvl_init(util, channel_id, dev_info, true);
	util->layer.receive = cfutill_receive;
	util->layer.transmit = cfutill_transmit;
	snprintf(util->layer.name, CAIF_LAYER_NAME_SZ - 1, "util1");
	return &util->layer;
}

static int cfutill_receive(struct cflayer *layr, struct cfpkt *pkt)
{
	u8 cmd = -1;
	struct cfsrvl *service = container_obj(layr);
	caif_assert(layr != NULL);
	caif_assert(layr->up != NULL);
	caif_assert(layr->up->receive != NULL);
	caif_assert(layr->up->ctrlcmd != NULL);
	if (cfpkt_extr_head(pkt, &cmd, 1) < 0) {
		pr_err("Packet is erroneous!\n");
		cfpkt_destroy(pkt);
		return -EPROTO;
	}

	switch (cmd) {
	case UTIL_PAYLOAD:
		return layr->up->receive(layr->up, pkt);
	case UTIL_FLOW_OFF:
		layr->ctrlcmd(layr, CAIF_CTRLCMD_FLOW_OFF_IND, 0);
		cfpkt_destroy(pkt);
		return 0;
	case UTIL_FLOW_ON:
		layr->ctrlcmd(layr, CAIF_CTRLCMD_FLOW_ON_IND, 0);
		cfpkt_destroy(pkt);
		return 0;
	case UTIL_REMOTE_SHUTDOWN:	/* Remote Shutdown Request */
		pr_err("REMOTE SHUTDOWN REQUEST RECEIVED\n");
		layr->ctrlcmd(layr, CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND, 0);
		service->open = false;
		cfpkt_destroy(pkt);
		return 0;
	default:
		cfpkt_destroy(pkt);
		pr_warn("Unknown service control %d (0x%x)\n", cmd, cmd);
		return -EPROTO;
	}
}

static int cfutill_transmit(struct cflayer *layr, struct cfpkt *pkt)
{
	u8 zero = 0;
	struct caif_payload_info *info;
	int ret;
	struct cfsrvl *service = container_obj(layr);
	caif_assert(layr != NULL);
	caif_assert(layr->dn != NULL);
	caif_assert(layr->dn->transmit != NULL);

	if (!cfsrvl_ready(service, &ret)) {
		cfpkt_destroy(pkt);
		return ret;
	}

	cfpkt_add_head(pkt, &zero, 1);
	/* Add info for MUX-layer to route the packet out. */
	info = cfpkt_info(pkt);
	info->channel_id = service->layer.id;
	/*
	 * To optimize alignment, we add up the size of CAIF header before
	 * payload.
	 */
	info->hdr_len = 1;
	info->dev_info = &service->dev_info;
	return layr->dn->transmit(layr->dn, pkt);
}
 href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=2194bd1080210c6e85ea262cda9ad0135b3f3c87'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/llc?h=nds-private-remove&amp;id=2194bd1080210c6e85ea262cda9ad0135b3f3c87'>llc</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/llc?h=nds-private-remove&amp;id=2194bd1080210c6e85ea262cda9ad0135b3f3c87&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
'2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Walleij &lt;linus.walleij@linaro.org&gt;</td><td class='right'>2016-11-12 15:22:38 +0100</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-11-13 09:22:37 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154/netlink.c?id=295070e9aa015abb9b92cccfbb1e43954e938133'>295070e9aa015abb9b92cccfbb1e43954e938133</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ieee802154/netlink.c?id=295070e9aa015abb9b92cccfbb1e43954e938133'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=295070e9aa015abb9b92cccfbb1e43954e938133'>d0a08e7ce280bc877e22424437dbe59fa1857d9a</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ieee802154/netlink.c?id=295070e9aa015abb9b92cccfbb1e43954e938133'>net/ieee802154/netlink.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154/netlink.c?id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ieee802154/netlink.c?id=295070e9aa015abb9b92cccfbb1e43954e938133&amp;id2=1001354ca34179f3db924eb66672442a173147dc'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: stw481x-vmmc: fix ages old enable error</div><div class='commit-msg'>The regulator has never been properly enabled, it has been
dormant all the time. It's strange that MMC was working
at all, but it likely worked by the signals going through
the levelshifter and reaching the card anyways.

Fixes: 3615a34ea1a6 ("regulator: add STw481x VMMC driver")
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Cc: stable@vger.kernel.org
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=295070e9aa015abb9b92cccfbb1e43954e938133'>Diffstat</a> (limited to 'net/ieee802154/netlink.c')</div><table summary='diffstat' class='diffstat'>