[media] move i2c files into drivers/media/i2c

Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 489 insertions, 0 deletions

diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c
new file mode 100644
index 000000000000..04f192a0398a
--- /dev/null
+++ b/drivers/media/i2c/ir-kbd-i2c.c
@@ -0,0 +1,489 @@
+/*
+ *
+ * keyboard input driver for i2c IR remote controls
+ *
+ * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
+ * modified for PixelView (BT878P+W/FM) by
+ *      Michal Kochanowicz <mkochano@pld.org.pl>
+ *      Christoph Bartelmus <lirc@bartelmus.de>
+ * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
+ *      Ulrich Mueller <ulrich.mueller42@web.de>
+ * modified for em2820 based USB TV tuners by
+ *      Markus Rechberger <mrechberger@gmail.com>
+ * modified for DViCO Fusion HDTV 5 RT GOLD by
+ *      Chaogui Zhang <czhang1974@gmail.com>
+ * modified for MSI TV@nywhere Plus by
+ *      Henry Wong <henry@stuffedcow.net>
+ *      Mark Schultz <n9xmj@yahoo.com>
+ *      Brian Rogers <brian_rogers@comcast.net>
+ * modified for AVerMedia Cardbus by
+ *      Oldrich Jedlicka <oldium.pro@seznam.cz>
+ *
+ *  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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/workqueue.h>
+
+#include <media/rc-core.h>
+#include <media/ir-kbd-i2c.h>
+
+/* ----------------------------------------------------------------------- */
+/* insmod parameters                                                       */
+
+static int debug;
+module_param(debug, int, 0644);    /* debug level (0,1,2) */
+
+
+#define MODULE_NAME "ir-kbd-i2c"
+#define dprintk(level, fmt, arg...)	if (debug >= level) \
+	printk(KERN_DEBUG MODULE_NAME ": " fmt , ## arg)
+
+/* ----------------------------------------------------------------------- */
+
+static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
+			       int size, int offset)
+{
+	unsigned char buf[6];
+	int start, range, toggle, dev, code, ircode;
+
+	/* poll IR chip */
+	if (size != i2c_master_recv(ir->c, buf, size))
+		return -EIO;
+
+	/* split rc5 data block ... */
+	start  = (buf[offset] >> 7) &    1;
+	range  = (buf[offset] >> 6) &    1;
+	toggle = (buf[offset] >> 5) &    1;
+	dev    =  buf[offset]       & 0x1f;
+	code   = (buf[offset+1] >> 2) & 0x3f;
+
+	/* rc5 has two start bits
+	 * the first bit must be one
+	 * the second bit defines the command range (1 = 0-63, 0 = 64 - 127)
+	 */
+	if (!start)
+		/* no key pressed */
+		return 0;
+	/*
+	 * Hauppauge remotes (black/silver) always use
+	 * specific device ids. If we do not filter the
+	 * device ids then messages destined for devices
+	 * such as TVs (id=0) will get through causing
+	 * mis-fired events.
+	 *
+	 * We also filter out invalid key presses which
+	 * produce annoying debug log entries.
+	 */
+	ircode= (start << 12) | (toggle << 11) | (dev << 6) | code;
+	if ((ircode & 0x1fff)==0x1fff)
+		/* invalid key press */
+		return 0;
+
+	if (!range)
+		code += 64;
+
+	dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
+		start, range, toggle, dev, code);
+
+	/* return key */
+	*ir_key = (dev << 8) | code;
+	*ir_raw = ircode;
+	return 1;
+}
+
+static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	return get_key_haup_common (ir, ir_key, ir_raw, 3, 0);
+}
+
+static int get_key_haup_xvr(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	int ret;
+	unsigned char buf[1] = { 0 };
+
+	/*
+	 * This is the same apparent "are you ready?" poll command observed
+	 * watching Windows driver traffic and implemented in lirc_zilog. With
+	 * this added, we get far saner remote behavior with z8 chips on usb
+	 * connected devices, even with the default polling interval of 100ms.
+	 */
+	ret = i2c_master_send(ir->c, buf, 1);
+	if (ret != 1)
+		return (ret < 0) ? ret : -EINVAL;
+
+	return get_key_haup_common (ir, ir_key, ir_raw, 6, 3);
+}
+
+static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	unsigned char b;
+
+	/* poll IR chip */
+	if (1 != i2c_master_recv(ir->c, &b, 1)) {
+		dprintk(1,"read error\n");
+		return -EIO;
+	}
+	*ir_key = b;
+	*ir_raw = b;
+	return 1;
+}
+
+static int get_key_fusionhdtv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	unsigned char buf[4];
+
+	/* poll IR chip */
+	if (4 != i2c_master_recv(ir->c, buf, 4)) {
+		dprintk(1,"read error\n");
+		return -EIO;
+	}
+
+	if(buf[0] !=0 || buf[1] !=0 || buf[2] !=0 || buf[3] != 0)
+		dprintk(2, "%s: 0x%2x 0x%2x 0x%2x 0x%2x\n", __func__,
+			buf[0], buf[1], buf[2], buf[3]);
+
+	/* no key pressed or signal from other ir remote */
+	if(buf[0] != 0x1 ||  buf[1] != 0xfe)
+		return 0;
+
+	*ir_key = buf[2];
+	*ir_raw = (buf[2] << 8) | buf[3];
+
+	return 1;
+}
+
+static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	unsigned char b;
+
+	/* poll IR chip */
+	if (1 != i2c_master_recv(ir->c, &b, 1)) {
+		dprintk(1,"read error\n");
+		return -EIO;
+	}
+
+	/* it seems that 0xFE indicates that a button is still hold
+	   down, while 0xff indicates that no button is hold
+	   down. 0xfe sequences are sometimes interrupted by 0xFF */
+
+	dprintk(2,"key %02x\n", b);
+
+	if (b == 0xff)
+		return 0;
+
+	if (b == 0xfe)
+		/* keep old data */
+		return 1;
+
+	*ir_key = b;
+	*ir_raw = b;
+	return 1;
+}
+
+static int get_key_avermedia_cardbus(struct IR_i2c *ir,
+				     u32 *ir_key, u32 *ir_raw)
+{
+	unsigned char subaddr, key, keygroup;
+	struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0,
+				   .buf = &subaddr, .len = 1},
+				 { .addr = ir->c->addr, .flags = I2C_M_RD,
+				  .buf = &key, .len = 1} };
+	subaddr = 0x0d;
+	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
+		dprintk(1, "read error\n");
+		return -EIO;
+	}
+
+	if (key == 0xff)
+		return 0;
+
+	subaddr = 0x0b;
+	msg[1].buf = &keygroup;
+	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
+		dprintk(1, "read error\n");
+		return -EIO;
+	}
+
+	if (keygroup == 0xff)
+		return 0;
+
+	dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup);
+	if (keygroup < 2 || keygroup > 3) {
+		/* Only a warning */
+		dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n",
+								keygroup, key);
+	}
+	key |= (keygroup & 1) << 6;
+
+	*ir_key = key;
+	*ir_raw = key;
+	return 1;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int ir_key_poll(struct IR_i2c *ir)
+{
+	static u32 ir_key, ir_raw;
+	int rc;
+
+	dprintk(3, "%s\n", __func__);
+	rc = ir->get_key(ir, &ir_key, &ir_raw);
+	if (rc < 0) {
+		dprintk(2,"error\n");
+		return rc;
+	}
+
+	if (rc) {
+		dprintk(1, "%s: keycode = 0x%04x\n", __func__, ir_key);
+		rc_keydown(ir->rc, ir_key, 0);
+	}
+	return 0;
+}
+
+static void ir_work(struct work_struct *work)
+{
+	int rc;
+	struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);
+
+	rc = ir_key_poll(ir);
+	if (rc == -ENODEV) {
+		rc_unregister_device(ir->rc);
+		ir->rc = NULL;
+		return;
+	}
+
+	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval));
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	char *ir_codes = NULL;
+	const char *name = NULL;
+	u64 rc_type = RC_TYPE_UNKNOWN;
+	struct IR_i2c *ir;
+	struct rc_dev *rc = NULL;
+	struct i2c_adapter *adap = client->adapter;
+	unsigned short addr = client->addr;
+	int err;
+
+	ir = kzalloc(sizeof(struct IR_i2c), GFP_KERNEL);
+	if (!ir)
+		return -ENOMEM;
+
+	ir->c = client;
+	ir->polling_interval = DEFAULT_POLLING_INTERVAL;
+	i2c_set_clientdata(client, ir);
+
+	switch(addr) {
+	case 0x64:
+		name        = "Pixelview";
+		ir->get_key = get_key_pixelview;
+		rc_type     = RC_TYPE_OTHER;
+		ir_codes    = RC_MAP_EMPTY;
+		break;
+	case 0x18:
+	case 0x1f:
+	case 0x1a:
+		name        = "Hauppauge";
+		ir->get_key = get_key_haup;
+		rc_type     = RC_TYPE_RC5;
+		ir_codes    = RC_MAP_HAUPPAUGE;
+		break;
+	case 0x30:
+		name        = "KNC One";
+		ir->get_key = get_key_knc1;
+		rc_type     = RC_TYPE_OTHER;
+		ir_codes    = RC_MAP_EMPTY;
+		break;
+	case 0x6b:
+		name        = "FusionHDTV";
+		ir->get_key = get_key_fusionhdtv;
+		rc_type     = RC_TYPE_RC5;
+		ir_codes    = RC_MAP_FUSIONHDTV_MCE;
+		break;
+	case 0x40:
+		name        = "AVerMedia Cardbus remote";
+		ir->get_key = get_key_avermedia_cardbus;
+		rc_type     = RC_TYPE_OTHER;
+		ir_codes    = RC_MAP_AVERMEDIA_CARDBUS;
+		break;
+	case 0x71:
+		name        = "Hauppauge/Zilog Z8";
+		ir->get_key = get_key_haup_xvr;
+		rc_type     = RC_TYPE_RC5;
+		ir_codes    = RC_MAP_HAUPPAUGE;
+		break;
+	}
+
+	/* Let the caller override settings */
+	if (client->dev.platform_data) {
+		const struct IR_i2c_init_data *init_data =
+						client->dev.platform_data;
+
+		ir_codes = init_data->ir_codes;
+		rc = init_data->rc_dev;
+
+		name = init_data->name;
+		if (init_data->type)
+			rc_type = init_data->type;
+
+		if (init_data->polling_interval)
+			ir->polling_interval = init_data->polling_interval;
+
+		switch (init_data->internal_get_key_func) {
+		case IR_KBD_GET_KEY_CUSTOM:
+			/* The bridge driver provided us its own function */
+			ir->get_key = init_data->get_key;
+			break;
+		case IR_KBD_GET_KEY_PIXELVIEW:
+			ir->get_key = get_key_pixelview;
+			break;
+		case IR_KBD_GET_KEY_HAUP:
+			ir->get_key = get_key_haup;
+			break;
+		case IR_KBD_GET_KEY_KNC1:
+			ir->get_key = get_key_knc1;
+			break;
+		case IR_KBD_GET_KEY_FUSIONHDTV:
+			ir->get_key = get_key_fusionhdtv;
+			break;
+		case IR_KBD_GET_KEY_HAUP_XVR:
+			ir->get_key = get_key_haup_xvr;
+			break;
+		case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS:
+			ir->get_key = get_key_avermedia_cardbus;
+			break;
+		}
+	}
+
+	if (!rc) {
+		/*
+		 * If platform_data doesn't specify rc_dev, initilize it
+		 * internally
+		 */
+		rc = rc_allocate_device();
+		if (!rc) {
+			err = -ENOMEM;
+			goto err_out_free;
+		}
+	}
+	ir->rc = rc;
+
+	/* Make sure we are all setup before going on */
+	if (!name || !ir->get_key || !rc_type || !ir_codes) {
+		dprintk(1, ": Unsupported device at address 0x%02x\n",
+			addr);
+		err = -ENODEV;
+		goto err_out_free;
+	}
+
+	/* Sets name */
+	snprintf(ir->name, sizeof(ir->name), "i2c IR (%s)", name);
+	ir->ir_codes = ir_codes;
+
+	snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
+		 dev_name(&adap->dev),
+		 dev_name(&client->dev));
+
+	/*
+	 * Initialize input_dev fields
+	 * It doesn't make sense to allow overriding them via platform_data
+	 */
+	rc->input_id.bustype = BUS_I2C;
+	rc->input_phys       = ir->phys;
+	rc->input_name	     = ir->name;
+
+	/*
+	 * Initialize the other fields of rc_dev
+	 */
+	rc->map_name       = ir->ir_codes;
+	rc->allowed_protos = rc_type;
+	if (!rc->driver_name)
+		rc->driver_name = MODULE_NAME;
+
+	err = rc_register_device(rc);
+	if (err)
+		goto err_out_free;
+
+	printk(MODULE_NAME ": %s detected at %s [%s]\n",
+	       ir->name, ir->phys, adap->name);
+
+	/* start polling via eventd */
+	INIT_DELAYED_WORK(&ir->work, ir_work);
+	schedule_delayed_work(&ir->work, 0);
+
+	return 0;
+
+ err_out_free:
+	/* Only frees rc if it were allocated internally */
+	rc_free_device(rc);
+	kfree(ir);
+	return err;
+}
+
+static int ir_remove(struct i2c_client *client)
+{
+	struct IR_i2c *ir = i2c_get_clientdata(client);
+
+	/* kill outstanding polls */
+	cancel_delayed_work_sync(&ir->work);
+
+	/* unregister device */
+	if (ir->rc)
+		rc_unregister_device(ir->rc);
+
+	/* free memory */
+	kfree(ir);
+	return 0;
+}
+
+static const struct i2c_device_id ir_kbd_id[] = {
+	/* Generic entry for any IR receiver */
+	{ "ir_video", 0 },
+	/* IR device specific entries should be added here */
+	{ "ir_rx_z8f0811_haup", 0 },
+	{ "ir_rx_z8f0811_hdpvr", 0 },
+	{ }
+};
+
+static struct i2c_driver ir_kbd_driver = {
+	.driver = {
+		.name   = "ir-kbd-i2c",
+	},
+	.probe          = ir_probe,
+	.remove         = ir_remove,
+	.id_table       = ir_kbd_id,
+};
+
+module_i2c_driver(ir_kbd_driver);
+
+/* ----------------------------------------------------------------------- */
+
+MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
+MODULE_DESCRIPTION("input driver for i2c IR remote controls");
+MODULE_LICENSE("GPL");