[net-next-2.6.git] / drivers / gpu / drm / i915 / dvo_sil164.c

/**************************************************************************

Copyright © 2006 Dave Airlie

All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sub license, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice (including the
next paragraph) shall be included in all copies or substantial portions
of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

**************************************************************************/

#include "dvo.h"

#define SIL164_VID 0x0001
#define SIL164_DID 0x0006

#define SIL164_VID_LO 0x00
#define SIL164_VID_HI 0x01
#define SIL164_DID_LO 0x02
#define SIL164_DID_HI 0x03
#define SIL164_REV    0x04
#define SIL164_RSVD   0x05
#define SIL164_FREQ_LO 0x06
#define SIL164_FREQ_HI 0x07

#define SIL164_REG8 0x08
#define SIL164_8_VEN (1<<5)
#define SIL164_8_HEN (1<<4)
#define SIL164_8_DSEL (1<<3)
#define SIL164_8_BSEL (1<<2)
#define SIL164_8_EDGE (1<<1)
#define SIL164_8_PD   (1<<0)

#define SIL164_REG9 0x09
#define SIL164_9_VLOW (1<<7)
#define SIL164_9_MSEL_MASK (0x7<<4)
#define SIL164_9_TSEL (1<<3)
#define SIL164_9_RSEN (1<<2)
#define SIL164_9_HTPLG (1<<1)
#define SIL164_9_MDI (1<<0)

#define SIL164_REGC 0x0c

struct sil164_priv {
	//I2CDevRec d;
	bool quiet;
};

#define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))

static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
{
	struct sil164_priv *sil = dvo->dev_priv;
	struct i2c_adapter *adapter = dvo->i2c_bus;
	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
	u8 out_buf[2];
	u8 in_buf[2];

	struct i2c_msg msgs[] = {
		{
			.addr = dvo->slave_addr,
			.flags = 0,
			.len = 1,
			.buf = out_buf,
		},
		{
			.addr = dvo->slave_addr,
			.flags = I2C_M_RD,
			.len = 1,
			.buf = in_buf,
		}
	};

	out_buf[0] = addr;
	out_buf[1] = 0;

	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
		*ch = in_buf[0];
		return true;
	};

	if (!sil->quiet) {
		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
			  addr, i2cbus->adapter.name, dvo->slave_addr);
	}
	return false;
}

static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
{
	struct sil164_priv *sil= dvo->dev_priv;
	struct i2c_adapter *adapter = dvo->i2c_bus;
	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
	uint8_t out_buf[2];
	struct i2c_msg msg = {
		.addr = dvo->slave_addr,
		.flags = 0,
		.len = 2,
		.buf = out_buf,
	};

	out_buf[0] = addr;
	out_buf[1] = ch;

	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
		return true;

	if (!sil->quiet) {
		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
			  addr, i2cbus->adapter.name, dvo->slave_addr);
	}

	return false;
}

/* Silicon Image 164 driver for chip on i2c bus */
static bool sil164_init(struct intel_dvo_device *dvo,
			struct i2c_adapter *adapter)
{
	/* this will detect the SIL164 chip on the specified i2c bus */
	struct sil164_priv *sil;
	unsigned char ch;

	sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL);
	if (sil == NULL)
		return false;

	dvo->i2c_bus = adapter;
	dvo->dev_priv = sil;
	sil->quiet = true;

	if (!sil164_readb(dvo, SIL164_VID_LO, &ch))
		goto out;

	if (ch != (SIL164_VID & 0xff)) {
		DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
			  ch, adapter->name, dvo->slave_addr);
		goto out;
	}

	if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
		goto out;

	if (ch != (SIL164_DID & 0xff)) {
		DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
			  ch, adapter->name, dvo->slave_addr);
		goto out;
	}
	sil->quiet = false;

	DRM_DEBUG_KMS("init sil164 dvo controller successfully!\n");
	return true;

out:
	kfree(sil);
	return false;
}

static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo)
{
	uint8_t reg9;

	sil164_readb(dvo, SIL164_REG9, &reg9);

	if (reg9 & SIL164_9_HTPLG)
		return connector_status_connected;
	else
		return connector_status_disconnected;
}

static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
					      struct drm_display_mode *mode)
{
	return MODE_OK;
}

static void sil164_mode_set(struct intel_dvo_device *dvo,
			    struct drm_display_mode *mode,
			    struct drm_display_mode *adjusted_mode)
{
	/* As long as the basics are set up, since we don't have clock
	 * dependencies in the mode setup, we can just leave the
	 * registers alone and everything will work fine.
	 */
	/* recommended programming sequence from doc */
	/*sil164_writeb(sil, 0x08, 0x30);
	  sil164_writeb(sil, 0x09, 0x00);
	  sil164_writeb(sil, 0x0a, 0x90);
	  sil164_writeb(sil, 0x0c, 0x89);
	  sil164_writeb(sil, 0x08, 0x31);*/
	/* don't do much */
	return;
}

/* set the SIL164 power state */
static void sil164_dpms(struct intel_dvo_device *dvo, int mode)
{
	int ret;
	unsigned char ch;

	ret = sil164_readb(dvo, SIL164_REG8, &ch);
	if (ret == false)
		return;

	if (mode == DRM_MODE_DPMS_ON)
		ch |= SIL164_8_PD;
	else
		ch &= ~SIL164_8_PD;

	sil164_writeb(dvo, SIL164_REG8, ch);
	return;
}

static void sil164_dump_regs(struct intel_dvo_device *dvo)
{
	uint8_t val;

	sil164_readb(dvo, SIL164_FREQ_LO, &val);
	DRM_LOG_KMS("SIL164_FREQ_LO: 0x%02x\n", val);
	sil164_readb(dvo, SIL164_FREQ_HI, &val);
	DRM_LOG_KMS("SIL164_FREQ_HI: 0x%02x\n", val);
	sil164_readb(dvo, SIL164_REG8, &val);
	DRM_LOG_KMS("SIL164_REG8: 0x%02x\n", val);
	sil164_readb(dvo, SIL164_REG9, &val);
	DRM_LOG_KMS("SIL164_REG9: 0x%02x\n", val);
	sil164_readb(dvo, SIL164_REGC, &val);
	DRM_LOG_KMS("SIL164_REGC: 0x%02x\n", val);
}

static void sil164_destroy(struct intel_dvo_device *dvo)
{
	struct sil164_priv *sil = dvo->dev_priv;

	if (sil) {
		kfree(sil);
		dvo->dev_priv = NULL;
	}
}

struct intel_dvo_dev_ops sil164_ops = {
	.init = sil164_init,
	.detect = sil164_detect,
	.mode_valid = sil164_mode_valid,
	.mode_set = sil164_mode_set,
	.dpms = sil164_dpms,
	.dump_regs = sil164_dump_regs,
	.destroy = sil164_destroy,
};
Commit	Line	Data
79e53945 JB	1	/**************************************************************************
	2
	3	Copyright © 2006 Dave Airlie
	4
	5	All Rights Reserved.
	6
	7	Permission is hereby granted, free of charge, to any person obtaining a
	8	copy of this software and associated documentation files (the
	9	"Software"), to deal in the Software without restriction, including
	10	without limitation the rights to use, copy, modify, merge, publish,
	11	distribute, sub license, and/or sell copies of the Software, and to
	12	permit persons to whom the Software is furnished to do so, subject to
	13	the following conditions:
	14
	15	The above copyright notice and this permission notice (including the
	16	next paragraph) shall be included in all copies or substantial portions
	17	of the Software.
	18
	19	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	20	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	21	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
	22	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	23	ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	24	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	25	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	26
	27	**************************************************************************/
	28
	29	#include "dvo.h"
	30
	31	#define SIL164_VID 0x0001
	32	#define SIL164_DID 0x0006
	33
	34	#define SIL164_VID_LO 0x00
	35	#define SIL164_VID_HI 0x01
	36	#define SIL164_DID_LO 0x02
	37	#define SIL164_DID_HI 0x03
	38	#define SIL164_REV 0x04
	39	#define SIL164_RSVD 0x05
	40	#define SIL164_FREQ_LO 0x06
	41	#define SIL164_FREQ_HI 0x07
	42
	43	#define SIL164_REG8 0x08
	44	#define SIL164_8_VEN (1<<5)
	45	#define SIL164_8_HEN (1<<4)
	46	#define SIL164_8_DSEL (1<<3)
	47	#define SIL164_8_BSEL (1<<2)
	48	#define SIL164_8_EDGE (1<<1)
	49	#define SIL164_8_PD (1<<0)
	50
	51	#define SIL164_REG9 0x09
	52	#define SIL164_9_VLOW (1<<7)
	53	#define SIL164_9_MSEL_MASK (0x7<<4)
	54	#define SIL164_9_TSEL (1<<3)
	55	#define SIL164_9_RSEN (1<<2)
	56	#define SIL164_9_HTPLG (1<<1)
	57	#define SIL164_9_MDI (1<<0)
	58
	59	#define SIL164_REGC 0x0c
	60
79e53945 JB	61	struct sil164_priv {
	62	//I2CDevRec d;
	63	bool quiet;
79e53945 JB	64	};
	65
	66	#define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))
	67
	68	static bool sil164_readb(struct intel_dvo_device dvo, int addr, uint8_t ch)
	69	{
	70	struct sil164_priv *sil = dvo->dev_priv;
f9c10a9b KP	71	struct i2c_adapter *adapter = dvo->i2c_bus;
f9c10a9b KP	72	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
79e53945 JB	73	u8 out_buf[2];
	74	u8 in_buf[2];
	75
	76	struct i2c_msg msgs[] = {
	77	{
f9c10a9b	78	.addr = dvo->slave_addr,
79e53945 JB	79	.flags = 0,
	80	.len = 1,
	81	.buf = out_buf,
	82	},
	83	{
f9c10a9b	84	.addr = dvo->slave_addr,
79e53945 JB	85	.flags = I2C_M_RD,
	86	.len = 1,
	87	.buf = in_buf,
	88	}
	89	};
	90
	91	out_buf[0] = addr;
	92	out_buf[1] = 0;
	93
	94	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
	95	*ch = in_buf[0];
	96	return true;
	97	};
	98
	99	if (!sil->quiet) {
d0c3b04a	100	DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
f9c10a9b	101	addr, i2cbus->adapter.name, dvo->slave_addr);
79e53945 JB	102	}
	103	return false;
	104	}
	105
	106	static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
	107	{
	108	struct sil164_priv *sil= dvo->dev_priv;
f9c10a9b KP	109	struct i2c_adapter *adapter = dvo->i2c_bus;
f9c10a9b KP	110	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
79e53945 JB	111	uint8_t out_buf[2];
79e53945 JB	112	struct i2c_msg msg = {
f9c10a9b	113	.addr = dvo->slave_addr,
79e53945 JB	114	.flags = 0,
	115	.len = 2,
	116	.buf = out_buf,
	117	};
	118
	119	out_buf[0] = addr;
	120	out_buf[1] = ch;
	121
	122	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
	123	return true;
	124
	125	if (!sil->quiet) {
d0c3b04a	126	DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
f9c10a9b	127	addr, i2cbus->adapter.name, dvo->slave_addr);
79e53945 JB	128	}
	129
	130	return false;
	131	}
	132
	133	/* Silicon Image 164 driver for chip on i2c bus */
	134	static bool sil164_init(struct intel_dvo_device *dvo,
f9c10a9b	135	struct i2c_adapter *adapter)
79e53945 JB	136	{
	137	/* this will detect the SIL164 chip on the specified i2c bus */
	138	struct sil164_priv *sil;
	139	unsigned char ch;
	140
	141	sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL);
	142	if (sil == NULL)
	143	return false;
	144
f9c10a9b	145	dvo->i2c_bus = adapter;
79e53945 JB	146	dvo->dev_priv = sil;
	147	sil->quiet = true;
	148
	149	if (!sil164_readb(dvo, SIL164_VID_LO, &ch))
	150	goto out;
	151
	152	if (ch != (SIL164_VID & 0xff)) {
d0c3b04a	153	DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
f9c10a9b	154	ch, adapter->name, dvo->slave_addr);
79e53945 JB	155	goto out;
	156	}
	157
	158	if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
	159	goto out;
	160
	161	if (ch != (SIL164_DID & 0xff)) {
d0c3b04a	162	DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
f9c10a9b	163	ch, adapter->name, dvo->slave_addr);
79e53945 JB	164	goto out;
	165	}
	166	sil->quiet = false;
	167
d0c3b04a	168	DRM_DEBUG_KMS("init sil164 dvo controller successfully!\n");
79e53945 JB	169	return true;
	170
	171	out:
	172	kfree(sil);
	173	return false;
	174	}
	175
	176	static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo)
	177	{
	178	uint8_t reg9;
	179
	180	sil164_readb(dvo, SIL164_REG9, &reg9);
	181
	182	if (reg9 & SIL164_9_HTPLG)
	183	return connector_status_connected;
	184	else
	185	return connector_status_disconnected;
	186	}
	187
	188	static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
	189	struct drm_display_mode *mode)
	190	{
	191	return MODE_OK;
	192	}
	193
	194	static void sil164_mode_set(struct intel_dvo_device *dvo,
	195	struct drm_display_mode *mode,
	196	struct drm_display_mode *adjusted_mode)
	197	{
	198	/* As long as the basics are set up, since we don't have clock
	199	* dependencies in the mode setup, we can just leave the
	200	* registers alone and everything will work fine.
	201	*/
	202	/* recommended programming sequence from doc */
	203	/*sil164_writeb(sil, 0x08, 0x30);
	204	sil164_writeb(sil, 0x09, 0x00);
	205	sil164_writeb(sil, 0x0a, 0x90);
	206	sil164_writeb(sil, 0x0c, 0x89);
	207	sil164_writeb(sil, 0x08, 0x31);*/
	208	/* don't do much */
	209	return;
	210	}
	211
	212	/* set the SIL164 power state */
	213	static void sil164_dpms(struct intel_dvo_device *dvo, int mode)
	214	{
	215	int ret;
	216	unsigned char ch;
	217
	218	ret = sil164_readb(dvo, SIL164_REG8, &ch);
	219	if (ret == false)
	220	return;
	221
	222	if (mode == DRM_MODE_DPMS_ON)
	223	ch \|= SIL164_8_PD;
	224	else
	225	ch &= ~SIL164_8_PD;
	226
	227	sil164_writeb(dvo, SIL164_REG8, ch);
	228	return;
	229	}
	230
	231	static void sil164_dump_regs(struct intel_dvo_device *dvo)
	232	{
233	uint8_t val;
234
235	sil164_readb(dvo, SIL164_FREQ_LO, &val);
d0c3b04a	236	DRM_LOG_KMS("SIL164_FREQ_LO: 0x%02x\n", val);
79e53945	237	sil164_readb(dvo, SIL164_FREQ_HI, &val);
d0c3b04a	238	DRM_LOG_KMS("SIL164_FREQ_HI: 0x%02x\n", val);
79e53945	239	sil164_readb(dvo, SIL164_REG8, &val);
d0c3b04a	240	DRM_LOG_KMS("SIL164_REG8: 0x%02x\n", val);
79e53945	241	sil164_readb(dvo, SIL164_REG9, &val);
d0c3b04a	242	DRM_LOG_KMS("SIL164_REG9: 0x%02x\n", val);
79e53945	243	sil164_readb(dvo, SIL164_REGC, &val);
d0c3b04a	244	DRM_LOG_KMS("SIL164_REGC: 0x%02x\n", val);
79e53945 JB	245	}
79e53945 JB	246
79e53945 JB	247	static void sil164_destroy(struct intel_dvo_device *dvo)
	248	{
	249	struct sil164_priv *sil = dvo->dev_priv;
	250
	251	if (sil) {
	252	kfree(sil);
	253	dvo->dev_priv = NULL;
	254	}
	255	}
	256
	257	struct intel_dvo_dev_ops sil164_ops = {
	258	.init = sil164_init,
	259	.detect = sil164_detect,
	260	.mode_valid = sil164_mode_valid,
	261	.mode_set = sil164_mode_set,
	262	.dpms = sil164_dpms,
	263	.dump_regs = sil164_dump_regs,
79e53945 JB	264	.destroy = sil164_destroy,
79e53945 JB	265	};