/****************************************************************************
 *
 * Driver for the IFX spi modem.
 *
 * Copyright (C) 2009, 2010 Intel Corp
 * Jim Stanley <jim.stanley@intel.com>
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA
 *
 *
 *
 *****************************************************************************/
#ifndef _IFX6X60_H
#define _IFX6X60_H

#define DRVNAME				"ifx6x60"
#define TTYNAME				"ttyIFX"

#define IFX_SPI_MAX_MINORS		1
#define IFX_SPI_TRANSFER_SIZE		2048
#define IFX_SPI_FIFO_SIZE		4096

#define IFX_SPI_HEADER_OVERHEAD		4
#define IFX_RESET_TIMEOUT		msecs_to_jiffies(50)

/* device flags bitfield definitions */
#define IFX_SPI_STATE_PRESENT		0
#define IFX_SPI_STATE_IO_IN_PROGRESS	1
#define IFX_SPI_STATE_IO_READY		2
#define IFX_SPI_STATE_TIMER_PENDING	3
#define IFX_SPI_STATE_IO_AVAILABLE	4

/* flow control bitfields */
#define IFX_SPI_DCD			0
#define IFX_SPI_CTS			1
#define IFX_SPI_DSR			2
#define IFX_SPI_RI			3
#define IFX_SPI_DTR			4
#define IFX_SPI_RTS			5
#define IFX_SPI_TX_FC			6
#define IFX_SPI_RX_FC			7
#define IFX_SPI_UPDATE			8

#define IFX_SPI_PAYLOAD_SIZE		(IFX_SPI_TRANSFER_SIZE - \
						IFX_SPI_HEADER_OVERHEAD)

#define IFX_SPI_IRQ_TYPE		DETECT_EDGE_RISING
#define IFX_SPI_GPIO_TARGET		0
#define IFX_SPI_GPIO0			0x105

#define IFX_SPI_STATUS_TIMEOUT		(2000*HZ)

/* values for bits in power status byte */
#define IFX_SPI_POWER_DATA_PENDING	1
#define IFX_SPI_POWER_SRDY		2

struct ifx_spi_device {
	/* Our SPI device */
	struct spi_device *spi_dev;

	/* Port specific data */
	struct kfifo tx_fifo;
	spinlock_t fifo_lock;
	unsigned long signal_state;

	/* TTY Layer logic */
	struct tty_port tty_port;
	struct device *tty_dev;
	int minor;

	/* Low level I/O work */
	struct tasklet_struct io_work_tasklet;
	unsigned long flags;
	dma_addr_t rx_dma;
	dma_addr_t tx_dma;

	int modem;		/* Modem type */
	int use_dma;		/* provide dma-able addrs in SPI msg */
	long max_hz;		/* max SPI frequency */

	spinlock_t write_lock;
	int write_pending;
	spinlock_t power_lock;
	unsigned char power_status;

	unsigned char *rx_buffer;
	unsigned char *tx_buffer;
	dma_addr_t rx_bus;
	dma_addr_t tx_bus;
	unsigned char spi_more;
	unsigned char spi_slave_cts;

	struct timer_list spi_timer;

	struct spi_message spi_msg;
	struct spi_transfer spi_xfer;

	struct {
		/* gpio lines */
		unsigned short srdy;		/* slave-ready gpio */
		unsigned short mrdy;		/* master-ready gpio */
		unsigned short reset;		/* modem-reset gpio */
		unsigned short po;		/* modem-on gpio */
		unsigned short reset_out;	/* modem-in-reset gpio */
		/* state/stats */
		int unack_srdy_int_nb;
	} gpio;

	/* modem reset */
	unsigned long mdm_reset_state;
#define MR_START	0
#define MR_INPROGRESS	1
#define MR_COMPLETE	2
	wait_queue_head_t mdm_reset_wait;
	void (*swap_buf)(unsigned char *buf, int len, void *end);
};

#endif /* _IFX6X60_H */
d</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
ue='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>Stanislaw Gruszka &lt;sgruszka@redhat.com&gt;</td><td class='right'>2017-01-29 12:40:52 +0100</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-31 09:08:52 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/sunxi/Kconfig?id=33e962c8871f015f5c8978384553dddcf5b81b22'>33e962c8871f015f5c8978384553dddcf5b81b22</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/sunxi/Kconfig?id=33e962c8871f015f5c8978384553dddcf5b81b22'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=33e962c8871f015f5c8978384553dddcf5b81b22'>43aff96c2ee21d9e0fa2018457778a4de52053cd</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/sunxi/Kconfig?id=33e962c8871f015f5c8978384553dddcf5b81b22'>sound/soc/sunxi/Kconfig</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/sunxi/Kconfig?id=575ddce0507789bf9830d089557d2199d2f91865'>575ddce0507789bf9830d089557d2199d2f91865</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/sunxi/Kconfig?id=33e962c8871f015f5c8978384553dddcf5b81b22&amp;id2=575ddce0507789bf9830d089557d2199d2f91865'>diff</a>)</td></tr></table>
<div class='commit-subject'>rt2x00: fix clk_get call</div><div class='commit-msg'>clk_get() takes two arguments and might return ERR_PTR(), so we
have to nullify pointer on that case, to do not break further call
to clk_get_rate().

Reported-by: Felix Fietkau &lt;nbd@nbd.name&gt;
Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices")
Signed-off-by: Stanislaw Gruszka &lt;sgruszka@redhat.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@codeaurora.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=33e962c8871f015f5c8978384553dddcf5b81b22'>Diffstat</a> (limited to 'sound/soc/sunxi/Kconfig')</div><table summary='diffstat' class='diffstat'>