i2c/cx25840/cx25840-firmware.c

32 static void start_fw_load(struct i2c_client *client)
35 	cx25840_write(client, 0x800, 0x00);
36 	cx25840_write(client, 0x801, 0x00);
38 	cx25840_write(client, 0x803, 0x0b);
40 	cx25840_write(client, 0x000, 0x20);
43 static void end_fw_load(struct i2c_client *client)
46 	cx25840_write(client, 0x000, 0x00);
48 	cx25840_write(client, 0x803, 0x03);
55 static const char *get_fw_name(struct i2c_client *client)
57 	struct cx25840_state *state = to_state(i2c_get_clientdata(client));
68 static int check_fw_load(struct i2c_client *client, int size)
71 	int s = cx25840_read(client, 0x801) << 8;
72 	s |= cx25840_read(client, 0x800);
75 		v4l_err(client, "firmware %s load failed\n",
76 				get_fw_name(client));
80 	v4l_info(client, "loaded %s firmware (%d bytes)\n",
81 			get_fw_name(client), size);
85 static int fw_write(struct i2c_client *client, const u8 *data, int size)
87 	if (i2c_master_send(client, data, size) < size) {
88 		v4l_err(client, "firmware load i2c failure\n");
95 int cx25840_loadfw(struct i2c_client *client)
97 	struct cx25840_state *state = to_state(i2c_get_clientdata(client));
101 	const char *fwname = get_fw_name(client);
108 		gpio_oe = cx25840_read(client, 0x160);
109 		gpio_da = cx25840_read(client, 0x164);
116 	if (request_firmware(&fw, fwname, FWDEV(client)) != 0) {
117 		v4l_err(client, "unable to open firmware %s\n", fwname);
121 	start_fw_load(client);
133 		retval = fw_write(client, buffer, len + 2);
144 	end_fw_load(client);
151 		cx25840_write(client, 0x160, gpio_oe);
152 		cx25840_write(client, 0x164, gpio_da);
155 	return check_fw_load(client, size);