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19#include <linux/module.h>
20#include <linux/delay.h>
21#include <linux/spi/spi.h>
22#include <linux/mutex.h>
23
24#include <video/omapdss.h>
25
26struct lb035q02_data {
27 struct mutex lock;
28};
29
30static struct omap_video_timings lb035q02_timings = {
31 .x_res = 320,
32 .y_res = 240,
33
34 .pixel_clock = 6500,
35
36 .hsw = 2,
37 .hfp = 20,
38 .hbp = 68,
39
40 .vsw = 2,
41 .vfp = 4,
42 .vbp = 18,
43
44 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
45 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
46 .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
47 .de_level = OMAPDSS_SIG_ACTIVE_HIGH,
48 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
49};
50
51static int lb035q02_panel_power_on(struct omap_dss_device *dssdev)
52{
53 int r;
54
55 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
56 return 0;
57
58 omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
59 omapdss_dpi_set_data_lines(dssdev, dssdev->phy.dpi.data_lines);
60
61 r = omapdss_dpi_display_enable(dssdev);
62 if (r)
63 goto err0;
64
65 if (dssdev->platform_enable) {
66 r = dssdev->platform_enable(dssdev);
67 if (r)
68 goto err1;
69 }
70
71 return 0;
72err1:
73 omapdss_dpi_display_disable(dssdev);
74err0:
75 return r;
76}
77
78static void lb035q02_panel_power_off(struct omap_dss_device *dssdev)
79{
80 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
81 return;
82
83 if (dssdev->platform_disable)
84 dssdev->platform_disable(dssdev);
85
86 omapdss_dpi_display_disable(dssdev);
87}
88
89static int lb035q02_panel_probe(struct omap_dss_device *dssdev)
90{
91 struct lb035q02_data *ld;
92 int r;
93
94 dssdev->panel.timings = lb035q02_timings;
95
96 ld = kzalloc(sizeof(*ld), GFP_KERNEL);
97 if (!ld) {
98 r = -ENOMEM;
99 goto err;
100 }
101 mutex_init(&ld->lock);
102 dev_set_drvdata(&dssdev->dev, ld);
103 return 0;
104err:
105 return r;
106}
107
108static void lb035q02_panel_remove(struct omap_dss_device *dssdev)
109{
110 struct lb035q02_data *ld = dev_get_drvdata(&dssdev->dev);
111
112 kfree(ld);
113}
114
115static int lb035q02_panel_enable(struct omap_dss_device *dssdev)
116{
117 struct lb035q02_data *ld = dev_get_drvdata(&dssdev->dev);
118 int r;
119
120 mutex_lock(&ld->lock);
121
122 r = lb035q02_panel_power_on(dssdev);
123 if (r)
124 goto err;
125 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
126
127 mutex_unlock(&ld->lock);
128 return 0;
129err:
130 mutex_unlock(&ld->lock);
131 return r;
132}
133
134static void lb035q02_panel_disable(struct omap_dss_device *dssdev)
135{
136 struct lb035q02_data *ld = dev_get_drvdata(&dssdev->dev);
137
138 mutex_lock(&ld->lock);
139
140 lb035q02_panel_power_off(dssdev);
141 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
142
143 mutex_unlock(&ld->lock);
144}
145
146static int lb035q02_panel_suspend(struct omap_dss_device *dssdev)
147{
148 struct lb035q02_data *ld = dev_get_drvdata(&dssdev->dev);
149
150 mutex_lock(&ld->lock);
151
152 lb035q02_panel_power_off(dssdev);
153 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
154
155 mutex_unlock(&ld->lock);
156 return 0;
157}
158
159static int lb035q02_panel_resume(struct omap_dss_device *dssdev)
160{
161 struct lb035q02_data *ld = dev_get_drvdata(&dssdev->dev);
162 int r;
163
164 mutex_lock(&ld->lock);
165
166 r = lb035q02_panel_power_on(dssdev);
167 if (r)
168 goto err;
169 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
170
171 mutex_unlock(&ld->lock);
172 return 0;
173err:
174 mutex_unlock(&ld->lock);
175 return r;
176}
177
178static struct omap_dss_driver lb035q02_driver = {
179 .probe = lb035q02_panel_probe,
180 .remove = lb035q02_panel_remove,
181
182 .enable = lb035q02_panel_enable,
183 .disable = lb035q02_panel_disable,
184 .suspend = lb035q02_panel_suspend,
185 .resume = lb035q02_panel_resume,
186
187 .driver = {
188 .name = "lgphilips_lb035q02_panel",
189 .owner = THIS_MODULE,
190 },
191};
192
193static int lb035q02_write_reg(struct spi_device *spi, u8 reg, u16 val)
194{
195 struct spi_message msg;
196 struct spi_transfer index_xfer = {
197 .len = 3,
198 .cs_change = 1,
199 };
200 struct spi_transfer value_xfer = {
201 .len = 3,
202 };
203 u8 buffer[16];
204
205 spi_message_init(&msg);
206
207
208 buffer[0] = 0x70;
209 buffer[1] = 0x00;
210 buffer[2] = reg & 0x7f;
211 index_xfer.tx_buf = buffer;
212 spi_message_add_tail(&index_xfer, &msg);
213
214
215 buffer[4] = 0x72;
216 buffer[5] = val >> 8;
217 buffer[6] = val;
218 value_xfer.tx_buf = buffer + 4;
219 spi_message_add_tail(&value_xfer, &msg);
220
221 return spi_sync(spi, &msg);
222}
223
224static void init_lb035q02_panel(struct spi_device *spi)
225{
226
227 lb035q02_write_reg(spi, 0x01, 0x6300);
228 lb035q02_write_reg(spi, 0x02, 0x0200);
229 lb035q02_write_reg(spi, 0x03, 0x0177);
230 lb035q02_write_reg(spi, 0x04, 0x04c7);
231 lb035q02_write_reg(spi, 0x05, 0xffc0);
232 lb035q02_write_reg(spi, 0x06, 0xe806);
233 lb035q02_write_reg(spi, 0x0a, 0x4008);
234 lb035q02_write_reg(spi, 0x0b, 0x0000);
235 lb035q02_write_reg(spi, 0x0d, 0x0030);
236 lb035q02_write_reg(spi, 0x0e, 0x2800);
237 lb035q02_write_reg(spi, 0x0f, 0x0000);
238 lb035q02_write_reg(spi, 0x16, 0x9f80);
239 lb035q02_write_reg(spi, 0x17, 0x0a0f);
240 lb035q02_write_reg(spi, 0x1e, 0x00c1);
241 lb035q02_write_reg(spi, 0x30, 0x0300);
242 lb035q02_write_reg(spi, 0x31, 0x0007);
243 lb035q02_write_reg(spi, 0x32, 0x0000);
244 lb035q02_write_reg(spi, 0x33, 0x0000);
245 lb035q02_write_reg(spi, 0x34, 0x0707);
246 lb035q02_write_reg(spi, 0x35, 0x0004);
247 lb035q02_write_reg(spi, 0x36, 0x0302);
248 lb035q02_write_reg(spi, 0x37, 0x0202);
249 lb035q02_write_reg(spi, 0x3a, 0x0a0d);
250 lb035q02_write_reg(spi, 0x3b, 0x0806);
251}
252
253static int __devinit lb035q02_panel_spi_probe(struct spi_device *spi)
254{
255 init_lb035q02_panel(spi);
256 return omap_dss_register_driver(&lb035q02_driver);
257}
258
259static int __devexit lb035q02_panel_spi_remove(struct spi_device *spi)
260{
261 omap_dss_unregister_driver(&lb035q02_driver);
262 return 0;
263}
264
265static struct spi_driver lb035q02_spi_driver = {
266 .driver = {
267 .name = "lgphilips_lb035q02_panel-spi",
268 .owner = THIS_MODULE,
269 },
270 .probe = lb035q02_panel_spi_probe,
271 .remove = __devexit_p(lb035q02_panel_spi_remove),
272};
273
274module_spi_driver(lb035q02_spi_driver);
275
276MODULE_LICENSE("GPL");
277