1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2020 Rockchip Electronics Co. Ltd.
4 *
5 * Author: Zorro Liu <zorro.liu@rock-chips.com>
6 */
7
8 #include <linux/slab.h>
9 #include <linux/device.h>
10 #include <linux/cdev.h>
11 #include <linux/fs.h>
12 #include <linux/io.h>
13 #include <linux/uaccess.h>
14 #include <linux/firmware.h>
15
16 #include "../ebc_dev.h"
17 #include "epd_lut.h"
18
19 static int (*lut_get)(struct epd_lut_data *, enum epd_lut_type, int);
20
epd_lut_from_mem_init(void * waveform)21 int epd_lut_from_mem_init(void *waveform)
22 {
23 int ret = -1;
24
25 ret = rkf_wf_input(waveform);
26 if (ret < 0) {
27 printk("[lut]: failed to input RKF waveform\n");
28 } else {
29 printk("[lut]: RKF waveform\n");
30 lut_get = rkf_wf_get_lut;
31 return 0;
32 }
33
34 ret = pvi_wf_input(waveform);
35 if (ret < 0) {
36 printk("[lut]: failed to input PVI waveform\n");
37 } else {
38 printk("[lut]: PVI waveform\n");
39 lut_get = pvi_wf_get_lut;
40 return 0;
41 }
42
43 return ret;
44 }
45
epd_lut_from_file_init(struct device * dev,void * waveform,int size)46 int epd_lut_from_file_init(struct device *dev, void *waveform, int size)
47 {
48 const struct firmware *fw;
49 int ret;
50
51 ret = request_firmware_into_buf(&fw, "waveform.bin", dev, waveform, size);
52 if (ret) {
53 dev_err(dev, "failed to load waveform firmware: %d\n", ret);
54 return ret;
55 }
56
57 return epd_lut_from_mem_init(waveform);
58 }
59
epd_lut_get_wf_version(void)60 const char *epd_lut_get_wf_version(void)
61 {
62 if (rkf_wf_get_version())
63 return rkf_wf_get_version();
64 if (pvi_wf_get_version())
65 return pvi_wf_get_version();
66 return NULL;
67 }
68
epd_lut_get(struct epd_lut_data * output,enum epd_lut_type lut_type,int temperture)69 int epd_lut_get(struct epd_lut_data *output, enum epd_lut_type lut_type, int temperture)
70 {
71 return lut_get(output, lut_type, temperture);
72 }
73