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14#include <linux/delay.h>
15#include <linux/err.h>
16#include <linux/fb.h>
17#include <linux/init.h>
18#include <linux/lcd.h>
19#include <linux/module.h>
20
21#include <linux/spi/spi.h>
22
23#include <video/ili9320.h>
24
25#include "ili9320.h"
26
27
28
29static const struct ili9320_reg vgg_init1[] = {
30 {
31 .address = ILI9320_POWER1,
32 .value = ILI9320_POWER1_AP(0) | ILI9320_POWER1_BT(0),
33 }, {
34 .address = ILI9320_POWER2,
35 .value = (ILI9320_POWER2_VC(7) |
36 ILI9320_POWER2_DC0(0) | ILI9320_POWER2_DC1(0)),
37 }, {
38 .address = ILI9320_POWER3,
39 .value = ILI9320_POWER3_VRH(0),
40 }, {
41 .address = ILI9320_POWER4,
42 .value = ILI9320_POWER4_VREOUT(0),
43 },
44};
45
46static const struct ili9320_reg vgg_init2[] = {
47 {
48 .address = ILI9320_POWER1,
49 .value = (ILI9320_POWER1_AP(3) | ILI9320_POWER1_APE |
50 ILI9320_POWER1_BT(7) | ILI9320_POWER1_SAP),
51 }, {
52 .address = ILI9320_POWER2,
53 .value = ILI9320_POWER2_VC(7) | ILI9320_POWER2_DC0(3),
54 }
55};
56
57static const struct ili9320_reg vgg_gamma[] = {
58 {
59 .address = ILI9320_GAMMA1,
60 .value = 0x0000,
61 }, {
62 .address = ILI9320_GAMMA2,
63 .value = 0x0505,
64 }, {
65 .address = ILI9320_GAMMA3,
66 .value = 0x0004,
67 }, {
68 .address = ILI9320_GAMMA4,
69 .value = 0x0006,
70 }, {
71 .address = ILI9320_GAMMA5,
72 .value = 0x0707,
73 }, {
74 .address = ILI9320_GAMMA6,
75 .value = 0x0105,
76 }, {
77 .address = ILI9320_GAMMA7,
78 .value = 0x0002,
79 }, {
80 .address = ILI9320_GAMMA8,
81 .value = 0x0707,
82 }, {
83 .address = ILI9320_GAMMA9,
84 .value = 0x0704,
85 }, {
86 .address = ILI9320_GAMMA10,
87 .value = 0x807,
88 }
89
90};
91
92static const struct ili9320_reg vgg_init0[] = {
93 [0] = {
94
95 .address = ILI9320_DRIVER,
96 .value = ILI9320_DRIVER_SS,
97 }, {
98 .address = ILI9320_DRIVEWAVE,
99 .value = (ILI9320_DRIVEWAVE_MUSTSET |
100 ILI9320_DRIVEWAVE_EOR | ILI9320_DRIVEWAVE_BC),
101 }, {
102 .address = ILI9320_ENTRYMODE,
103 .value = ILI9320_ENTRYMODE_ID(3) | ILI9320_ENTRYMODE_BGR,
104 }, {
105 .address = ILI9320_RESIZING,
106 .value = 0x0,
107 },
108};
109
110
111static int vgg2432a4_lcd_init(struct ili9320 *lcd,
112 struct ili9320_platdata *cfg)
113{
114 unsigned int addr;
115 int ret;
116
117
118 ret = ili9320_write(lcd, 0x00e5, 0x8000);
119 if (ret)
120 goto err_initial;
121
122
123 ret = ili9320_write(lcd, ILI9320_OSCILATION, ILI9320_OSCILATION_OSC);
124 if (ret)
125 goto err_initial;
126
127
128 mdelay(15);
129
130 ret = ili9320_write_regs(lcd, vgg_init0, ARRAY_SIZE(vgg_init0));
131 if (ret != 0)
132 goto err_initial;
133
134 ili9320_write(lcd, ILI9320_DISPLAY2, cfg->display2);
135 ili9320_write(lcd, ILI9320_DISPLAY3, cfg->display3);
136 ili9320_write(lcd, ILI9320_DISPLAY4, cfg->display4);
137
138 ili9320_write(lcd, ILI9320_RGB_IF1, cfg->rgb_if1);
139 ili9320_write(lcd, ILI9320_FRAMEMAKER, 0x0);
140 ili9320_write(lcd, ILI9320_RGB_IF2, cfg->rgb_if2);
141
142 ret = ili9320_write_regs(lcd, vgg_init1, ARRAY_SIZE(vgg_init1));
143 if (ret != 0)
144 goto err_vgg;
145
146 mdelay(300);
147
148 ret = ili9320_write_regs(lcd, vgg_init2, ARRAY_SIZE(vgg_init2));
149 if (ret != 0)
150 goto err_vgg2;
151
152 mdelay(100);
153
154 ili9320_write(lcd, ILI9320_POWER3, 0x13c);
155
156 mdelay(100);
157
158 ili9320_write(lcd, ILI9320_POWER4, 0x1c00);
159 ili9320_write(lcd, ILI9320_POWER7, 0x000e);
160
161 mdelay(100);
162
163 ili9320_write(lcd, ILI9320_GRAM_HORIZ_ADDR, 0x00);
164 ili9320_write(lcd, ILI9320_GRAM_VERT_ADD, 0x00);
165
166 ret = ili9320_write_regs(lcd, vgg_gamma, ARRAY_SIZE(vgg_gamma));
167 if (ret != 0)
168 goto err_vgg3;
169
170 ili9320_write(lcd, ILI9320_HORIZ_START, 0x0);
171 ili9320_write(lcd, ILI9320_HORIZ_END, cfg->hsize - 1);
172 ili9320_write(lcd, ILI9320_VERT_START, 0x0);
173 ili9320_write(lcd, ILI9320_VERT_END, cfg->vsize - 1);
174
175 ili9320_write(lcd, ILI9320_DRIVER2,
176 ILI9320_DRIVER2_NL(((cfg->vsize - 240) / 8) + 0x1D));
177
178 ili9320_write(lcd, ILI9320_BASE_IMAGE, 0x1);
179 ili9320_write(lcd, ILI9320_VERT_SCROLL, 0x00);
180
181 for (addr = ILI9320_PARTIAL1_POSITION; addr <= ILI9320_PARTIAL2_END;
182 addr++) {
183 ili9320_write(lcd, addr, 0x0);
184 }
185
186 ili9320_write(lcd, ILI9320_INTERFACE1, 0x10);
187 ili9320_write(lcd, ILI9320_INTERFACE2, cfg->interface2);
188 ili9320_write(lcd, ILI9320_INTERFACE3, cfg->interface3);
189 ili9320_write(lcd, ILI9320_INTERFACE4, cfg->interface4);
190 ili9320_write(lcd, ILI9320_INTERFACE5, cfg->interface5);
191 ili9320_write(lcd, ILI9320_INTERFACE6, cfg->interface6);
192
193 lcd->display1 = (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_DTE |
194 ILI9320_DISPLAY1_GON | ILI9320_DISPLAY1_BASEE |
195 0x40);
196
197 ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
198
199 return 0;
200
201 err_vgg3:
202 err_vgg2:
203 err_vgg:
204 err_initial:
205 return ret;
206}
207
208#ifdef CONFIG_PM_SLEEP
209static int vgg2432a4_suspend(struct device *dev)
210{
211 return ili9320_suspend(dev_get_drvdata(dev));
212}
213static int vgg2432a4_resume(struct device *dev)
214{
215 return ili9320_resume(dev_get_drvdata(dev));
216}
217#endif
218
219static struct ili9320_client vgg2432a4_client = {
220 .name = "VGG2432A4",
221 .init = vgg2432a4_lcd_init,
222};
223
224
225
226static int vgg2432a4_probe(struct spi_device *spi)
227{
228 int ret;
229
230 ret = ili9320_probe_spi(spi, &vgg2432a4_client);
231 if (ret != 0) {
232 dev_err(&spi->dev, "failed to initialise ili9320\n");
233 return ret;
234 }
235
236 return 0;
237}
238
239static int vgg2432a4_remove(struct spi_device *spi)
240{
241 return ili9320_remove(spi_get_drvdata(spi));
242}
243
244static void vgg2432a4_shutdown(struct spi_device *spi)
245{
246 ili9320_shutdown(spi_get_drvdata(spi));
247}
248
249static SIMPLE_DEV_PM_OPS(vgg2432a4_pm_ops, vgg2432a4_suspend, vgg2432a4_resume);
250
251static struct spi_driver vgg2432a4_driver = {
252 .driver = {
253 .name = "VGG2432A4",
254 .pm = &vgg2432a4_pm_ops,
255 },
256 .probe = vgg2432a4_probe,
257 .remove = vgg2432a4_remove,
258 .shutdown = vgg2432a4_shutdown,
259};
260
261module_spi_driver(vgg2432a4_driver);
262
263MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
264MODULE_DESCRIPTION("VGG2432A4 LCD Driver");
265MODULE_LICENSE("GPL v2");
266MODULE_ALIAS("spi:VGG2432A4");
267
