/drivers/staging/msm/hdmi_sii9022.c

  1/* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
  2 *
  3 * This program is free software; you can redistribute it and/or modify
  4 * it under the terms of the GNU General Public License version 2 and
  5 * only version 2 as published by the Free Software Foundation.
  6 *
  7 * This program is distributed in the hope that it will be useful,
  8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 10 * GNU General Public License for more details.
 11 *
 12 * You should have received a copy of the GNU General Public License
 13 * along with this program; if not, write to the Free Software
 14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 15 * 02110-1301, USA.
 16 */
 17
 18#include <linux/i2c.h>
 19#include <linux/delay.h>
 20#include "msm_fb.h"
 21
 22#define DEVICE_NAME "sii9022"
 23#define SII9022_DEVICE_ID   0xB0
 24
 25struct sii9022_i2c_addr_data{
 26	u8 addr;
 27	u8 data;
 28};
 29
 30/* video mode data */
 31static u8 video_mode_data[] = {
 32	0x00,
 33	0xF9, 0x1C, 0x70, 0x17, 0x72, 0x06, 0xEE, 0x02,
 34};
 35
 36static u8 avi_io_format[] = {
 37	0x09,
 38	0x00, 0x00,
 39};
 40
 41/* power state */
 42static struct sii9022_i2c_addr_data regset0[] = {
 43	{ 0x60, 0x04 },
 44	{ 0x63, 0x00 },
 45	{ 0x1E, 0x00 },
 46};
 47
 48static u8 video_infoframe[] = {
 49	0x0C,
 50	0xF0, 0x00, 0x68, 0x00, 0x04, 0x00, 0x19, 0x00,
 51	0xE9, 0x02, 0x04, 0x01, 0x04, 0x06,
 52};
 53
 54/* configure audio */
 55static struct sii9022_i2c_addr_data regset1[] = {
 56	{ 0x26, 0x90 },
 57	{ 0x20, 0x90 },
 58	{ 0x1F, 0x80 },
 59	{ 0x26, 0x80 },
 60	{ 0x24, 0x02 },
 61	{ 0x25, 0x0B },
 62	{ 0xBC, 0x02 },
 63	{ 0xBD, 0x24 },
 64	{ 0xBE, 0x02 },
 65};
 66
 67/* enable audio */
 68static u8 misc_infoframe[] = {
 69	0xBF,
 70	0xC2, 0x84, 0x01, 0x0A, 0x6F, 0x02, 0x00, 0x00,
 71	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 72};
 73
 74/* set HDMI, active */
 75static struct sii9022_i2c_addr_data regset2[] = {
 76	{ 0x1A, 0x01 },
 77	{ 0x3D, 0x00 },
 78};
 79
 80static int send_i2c_data(struct i2c_client *client,
 81			 struct sii9022_i2c_addr_data *regset,
 82			 int size)
 83{
 84	int i;
 85	int rc = 0;
 86
 87	for (i = 0; i < size; i++) {
 88		rc = i2c_smbus_write_byte_data(
 89			client,
 90			regset[i].addr, regset[i].data);
 91		if (rc)
 92			break;
 93	}
 94	return rc;
 95}
 96
 97static int hdmi_sii_enable(struct i2c_client *client)
 98{
 99	int rc;
100	int retries = 10;
101	int count;
102
103	rc = i2c_smbus_write_byte_data(client, 0xC7, 0x00);
104	if (rc)
105		goto enable_exit;
106
107	do {
108		msleep(1);
109		rc = i2c_smbus_read_byte_data(client, 0x1B);
110	} while ((rc != SII9022_DEVICE_ID) && retries--);
111
112	if (rc != SII9022_DEVICE_ID)
113		return -ENODEV;
114
115	rc = i2c_smbus_write_byte_data(client, 0x1A, 0x11);
116	if (rc)
117		goto enable_exit;
118
119	count = ARRAY_SIZE(video_mode_data);
120	rc = i2c_master_send(client, video_mode_data, count);
121	if (rc != count) {
122		rc = -EIO;
123		goto enable_exit;
124	}
125
126	rc = i2c_smbus_write_byte_data(client, 0x08, 0x20);
127	if (rc)
128		goto enable_exit;
129	count = ARRAY_SIZE(avi_io_format);
130	rc = i2c_master_send(client, avi_io_format, count);
131	if (rc != count) {
132		rc = -EIO;
133		goto enable_exit;
134	}
135
136	rc = send_i2c_data(client, regset0, ARRAY_SIZE(regset0));
137	if (rc)
138		goto enable_exit;
139
140	count = ARRAY_SIZE(video_infoframe);
141	rc = i2c_master_send(client, video_infoframe, count);
142	if (rc != count) {
143		rc = -EIO;
144		goto enable_exit;
145	}
146
147	rc = send_i2c_data(client, regset1, ARRAY_SIZE(regset1));
148	if (rc)
149		goto enable_exit;
150
151	count = ARRAY_SIZE(misc_infoframe);
152	rc = i2c_master_send(client, misc_infoframe, count);
153	if (rc != count) {
154		rc = -EIO;
155		goto enable_exit;
156	}
157
158	rc = send_i2c_data(client, regset2, ARRAY_SIZE(regset2));
159	if (rc)
160		goto enable_exit;
161
162	return 0;
163enable_exit:
164	printk(KERN_ERR "%s: exited rc=%d\n", __func__, rc);
165	return rc;
166}
167
168static const struct i2c_device_id hmdi_sii_id[] = {
169	{ DEVICE_NAME, 0 },
170	{ }
171};
172
173static int hdmi_sii_probe(struct i2c_client *client,
174			const struct i2c_device_id *id)
175{
176	int rc;
177
178	if (!i2c_check_functionality(client->adapter,
179				     I2C_FUNC_SMBUS_BYTE | I2C_FUNC_I2C))
180		return -ENODEV;
181	rc = hdmi_sii_enable(client);
182	return rc;
183}
184
185
186static struct i2c_driver hdmi_sii_i2c_driver = {
187	.driver = {
188		.name = DEVICE_NAME,
189		.owner = THIS_MODULE,
190	},
191	.probe = hdmi_sii_probe,
192	.remove =  __exit_p(hdmi_sii_remove),
193	.id_table = hmdi_sii_id,
194};
195
196static int __init hdmi_sii_init(void)
197{
198	int ret;
199	struct msm_panel_info pinfo;
200
201	if (msm_fb_detect_client("hdmi_sii9022"))
202		return 0;
203
204	pinfo.xres = 1280;
205	pinfo.yres = 720;
206	pinfo.type = HDMI_PANEL;
207	pinfo.pdest = DISPLAY_1;
208	pinfo.wait_cycle = 0;
209	pinfo.bpp = 24;
210	pinfo.fb_num = 2;
211	pinfo.clk_rate = 74250000;
212
213	pinfo.lcdc.h_back_porch = 124;
214	pinfo.lcdc.h_front_porch = 110;
215	pinfo.lcdc.h_pulse_width = 136;
216	pinfo.lcdc.v_back_porch = 19;
217	pinfo.lcdc.v_front_porch = 5;
218	pinfo.lcdc.v_pulse_width = 6;
219	pinfo.lcdc.border_clr = 0;
220	pinfo.lcdc.underflow_clr = 0xff;
221	pinfo.lcdc.hsync_skew = 0;
222
223	ret = lcdc_device_register(&pinfo);
224	if (ret) {
225		printk(KERN_ERR "%s: failed to register device\n", __func__);
226		goto init_exit;
227	}
228
229	ret = i2c_add_driver(&hdmi_sii_i2c_driver);
230	if (ret)
231		printk(KERN_ERR "%s: failed to add i2c driver\n", __func__);
232
233init_exit:
234	return ret;
235}
236
237static void __exit hdmi_sii_exit(void)
238{
239	i2c_del_driver(&hdmi_sii_i2c_driver);
240}
241
242module_init(hdmi_sii_init);
243module_exit(hdmi_sii_exit);
244MODULE_LICENSE("GPL v2");
245MODULE_VERSION("0.1");
246MODULE_AUTHOR("Qualcomm Innovation Center, Inc.");
247MODULE_DESCRIPTION("SiI9022 HDMI driver");
248MODULE_ALIAS("platform:hdmi-sii9022");