[net-next-2.6.git] / drivers / media / video / cx23885 / cx23885-ioctl.c

/*
 *  Driver for the Conexant CX23885/7/8 PCIe bridge
 *
 *  Various common ioctl() support functions
 *
 *  Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "cx23885.h"
#include <media/v4l2-chip-ident.h>

int cx23885_g_chip_ident(struct file *file, void *fh,
			 struct v4l2_dbg_chip_ident *chip)
{
	struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
	int err = 0;
	u8 rev;

	chip->ident = V4L2_IDENT_NONE;
	chip->revision = 0;
	switch (chip->match.type) {
	case V4L2_CHIP_MATCH_HOST:
		switch (chip->match.addr) {
		case 0:
			rev = cx_read(RDR_CFG2) & 0xff;
			switch (dev->pci->device) {
			case 0x8852:
				/* rev 0x04 could be '885 or '888. Pick '888. */
				if (rev == 0x04)
					chip->ident = V4L2_IDENT_CX23888;
				else
					chip->ident = V4L2_IDENT_CX23885;
				break;
			case 0x8880:
				if (rev == 0x0e || rev == 0x0f)
					chip->ident = V4L2_IDENT_CX23887;
				else
					chip->ident = V4L2_IDENT_CX23888;
				break;
			default:
				chip->ident = V4L2_IDENT_UNKNOWN;
				break;
			}
			chip->revision = (dev->pci->device << 16) | (rev << 8) |
					 (dev->hwrevision & 0xff);
			break;
		case 1:
			if (dev->v4l_device != NULL) {
				chip->ident = V4L2_IDENT_CX23417;
				chip->revision = 0;
			}
			break;
		case 2:
			/*
			 * The integrated IR controller on the CX23888 is
			 * host chip 2.  It may not be used/initialized or sd_ir
			 * may be pointing at the cx25840 subdevice for the
			 * IR controller on the CX23885.  Thus we find it
			 * without using the dev->sd_ir pointer.
			 */
			call_hw(dev, CX23885_HW_888_IR, core, g_chip_ident,
				chip);
			break;
		default:
			err = -EINVAL; /* per V4L2 spec */
			break;
		}
		break;
	case V4L2_CHIP_MATCH_I2C_DRIVER:
		/* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
		call_all(dev, core, g_chip_ident, chip);
		break;
	case V4L2_CHIP_MATCH_I2C_ADDR:
		/*
		 * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
		 * to look if a chip is at the address with no driver.  That's a
		 * dangerous thing to do with EEPROMs anyway.
		 */
		call_all(dev, core, g_chip_ident, chip);
		break;
	default:
		err = -EINVAL;
		break;
	}
	return err;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int cx23885_g_host_register(struct cx23885_dev *dev,
				   struct v4l2_dbg_register *reg)
{
	if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
		return -EINVAL;

	reg->size = 4;
	reg->val = cx_read(reg->reg);
	return 0;
}

static int cx23417_g_register(struct cx23885_dev *dev,
			      struct v4l2_dbg_register *reg)
{
	u32 value;

	if (dev->v4l_device == NULL)
		return -EINVAL;

	if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
		return -EINVAL;

	if (mc417_register_read(dev, (u16) reg->reg, &value))
		return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */

	reg->size = 4;
	reg->val = value;
	return 0;
}

int cx23885_g_register(struct file *file, void *fh,
		       struct v4l2_dbg_register *reg)
{
	struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;

	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
		switch (reg->match.addr) {
		case 0:
			return cx23885_g_host_register(dev, reg);
		case 1:
			return cx23417_g_register(dev, reg);
		default:
			break;
		}
	}

	/* FIXME - any error returns should not be ignored */
	call_all(dev, core, g_register, reg);
	return 0;
}

static int cx23885_s_host_register(struct cx23885_dev *dev,
				   struct v4l2_dbg_register *reg)
{
	if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
		return -EINVAL;

	reg->size = 4;
	cx_write(reg->reg, reg->val);
	return 0;
}

static int cx23417_s_register(struct cx23885_dev *dev,
			      struct v4l2_dbg_register *reg)
{
	if (dev->v4l_device == NULL)
		return -EINVAL;

	if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
		return -EINVAL;

	if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
		return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */

	reg->size = 4;
	return 0;
}

int cx23885_s_register(struct file *file, void *fh,
		       struct v4l2_dbg_register *reg)
{
	struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;

	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
		switch (reg->match.addr) {
		case 0:
			return cx23885_s_host_register(dev, reg);
		case 1:
			return cx23417_s_register(dev, reg);
		default:
			break;
		}
	}

	/* FIXME - any error returns should not be ignored */
	call_all(dev, core, s_register, reg);
	return 0;
}
#endif
Commit	Line	Data
74618244 AW	1	/*
	2	* Driver for the Conexant CX23885/7/8 PCIe bridge
	3	*
	4	* Various common ioctl() support functions
	5	*
6afdeaf8	6	* Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
74618244 AW	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	*
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	22	*/
	23
	24	#include "cx23885.h"
	25	#include <media/v4l2-chip-ident.h>
	26
	27	int cx23885_g_chip_ident(struct file file, void fh,
	28	struct v4l2_dbg_chip_ident *chip)
	29	{
	30	struct cx23885_dev dev = ((struct cx23885_fh )fh)->dev;
	31	int err = 0;
	32	u8 rev;
	33
	34	chip->ident = V4L2_IDENT_NONE;
	35	chip->revision = 0;
	36	switch (chip->match.type) {
	37	case V4L2_CHIP_MATCH_HOST:
	38	switch (chip->match.addr) {
	39	case 0:
	40	rev = cx_read(RDR_CFG2) & 0xff;
	41	switch (dev->pci->device) {
	42	case 0x8852:
	43	/* rev 0x04 could be '885 or '888. Pick '888. */
	44	if (rev == 0x04)
	45	chip->ident = V4L2_IDENT_CX23888;
	46	else
	47	chip->ident = V4L2_IDENT_CX23885;
	48	break;
	49	case 0x8880:
	50	if (rev == 0x0e \|\| rev == 0x0f)
	51	chip->ident = V4L2_IDENT_CX23887;
	52	else
	53	chip->ident = V4L2_IDENT_CX23888;
	54	break;
	55	default:
	56	chip->ident = V4L2_IDENT_UNKNOWN;
	57	break;
	58	}
	59	chip->revision = (dev->pci->device << 16) \| (rev << 8) \|
	60	(dev->hwrevision & 0xff);
	61	break;
	62	case 1:
	63	if (dev->v4l_device != NULL) {
	64	chip->ident = V4L2_IDENT_CX23417;
	65	chip->revision = 0;
	66	}
	67	break;
29f8a0a5 AW	68	case 2:
	69	/*
	70	* The integrated IR controller on the CX23888 is
	71	* host chip 2. It may not be used/initialized or sd_ir
	72	* may be pointing at the cx25840 subdevice for the
	73	* IR controller on the CX23885. Thus we find it
	74	* without using the dev->sd_ir pointer.
	75	*/
	76	call_hw(dev, CX23885_HW_888_IR, core, g_chip_ident,
	77	chip);
	78	break;
74618244 AW	79	default:
	80	err = -EINVAL; /* per V4L2 spec */
	81	break;
	82	}
	83	break;
	84	case V4L2_CHIP_MATCH_I2C_DRIVER:
	85	/* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
	86	call_all(dev, core, g_chip_ident, chip);
	87	break;
	88	case V4L2_CHIP_MATCH_I2C_ADDR:
	89	/*
	90	* We could return V4L2_IDENT_UNKNOWN, but we don't do the work
	91	* to look if a chip is at the address with no driver. That's a
	92	* dangerous thing to do with EEPROMs anyway.
	93	*/
	94	call_all(dev, core, g_chip_ident, chip);
	95	break;
	96	default:
	97	err = -EINVAL;
	98	break;
	99	}
	100	return err;
	101	}
	102
	103	#ifdef CONFIG_VIDEO_ADV_DEBUG
	104	static int cx23885_g_host_register(struct cx23885_dev *dev,
	105	struct v4l2_dbg_register *reg)
	106	{
	107	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= pci_resource_len(dev->pci, 0))
	108	return -EINVAL;
	109
	110	reg->size = 4;
	111	reg->val = cx_read(reg->reg);
	112	return 0;
	113	}
	114
	115	static int cx23417_g_register(struct cx23885_dev *dev,
	116	struct v4l2_dbg_register *reg)
	117	{
	118	u32 value;
	119
	120	if (dev->v4l_device == NULL)
	121	return -EINVAL;
	122
	123	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= 0x10000)
	124	return -EINVAL;
	125
	126	if (mc417_register_read(dev, (u16) reg->reg, &value))
	127	return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
	128
	129	reg->size = 4;
	130	reg->val = value;
	131	return 0;
	132	}
	133
	134	int cx23885_g_register(struct file file, void fh,
	135	struct v4l2_dbg_register *reg)
	136	{
	137	struct cx23885_dev dev = ((struct cx23885_fh )fh)->dev;
	138
	139	if (!capable(CAP_SYS_ADMIN))
	140	return -EPERM;
	141
	142	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
143	switch (reg->match.addr) {
144	case 0:
145	return cx23885_g_host_register(dev, reg);
146	case 1:
147	return cx23417_g_register(dev, reg);
148	default:
149	break;
150	}
151	}
152
153	/* FIXME - any error returns should not be ignored */
154	call_all(dev, core, g_register, reg);
155	return 0;
156	}
157
158	static int cx23885_s_host_register(struct cx23885_dev *dev,
159	struct v4l2_dbg_register *reg)
160	{
161	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= pci_resource_len(dev->pci, 0))
162	return -EINVAL;
163
164	reg->size = 4;
165	cx_write(reg->reg, reg->val);
166	return 0;
167	}
168
169	static int cx23417_s_register(struct cx23885_dev *dev,
170	struct v4l2_dbg_register *reg)
171	{
172	if (dev->v4l_device == NULL)
173	return -EINVAL;
174
175	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= 0x10000)
176	return -EINVAL;
177
178	if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
179	return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
180
181	reg->size = 4;
182	return 0;
183	}
184
185	int cx23885_s_register(struct file file, void fh,
186	struct v4l2_dbg_register *reg)
187	{
188	struct cx23885_dev dev = ((struct cx23885_fh )fh)->dev;
189
190	if (!capable(CAP_SYS_ADMIN))
191	return -EPERM;
192
193	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
194	switch (reg->match.addr) {
195	case 0:
196	return cx23885_s_host_register(dev, reg);
197	case 1:
198	return cx23417_s_register(dev, reg);
199	default:
200	break;
201	}
202	}
203
204	/* FIXME - any error returns should not be ignored */
205	call_all(dev, core, s_register, reg);
206	return 0;
207	}
208	#endif