int cx25840_loadfw(struct i2c_client *client)
{
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
const struct firmware *fw = NULL;
u8 buffer[FWSEND];
const u8 *ptr;
const char *fwname = get_fw_name(client);
int size, retval;
int max_buf_size = FWSEND;
u32 gpio_oe = 0, gpio_da = 0;
if (is_cx2388x(state)) {
/* Preserve the GPIO OE and output bits */
gpio_oe = cx25840_read(client, 0x160);
gpio_da = cx25840_read(client, 0x164);
}
/* cx231xx cannot accept more than 16 bytes at a time */
if (is_cx231xx(state) && max_buf_size > 16)
max_buf_size = 16;
if (request_firmware(&fw, fwname, FWDEV(client)) != 0)
return -EINVAL;
start_fw_load(client);
buffer[0] = 0x08;
buffer[1] = 0x02;
size = fw->size;
ptr = fw->data;
while (size > 0) {
int len = min(max_buf_size - 2, size);
memcpy(buffer + 2, ptr, len);
retval = fw_write(client, buffer, len + 2);
if (retval < 0) {
release_firmware(fw);
return retval;
}
size -= len;
ptr += len;
}
end_fw_load(client);
size = fw->size;
release_firmware(fw);
if (is_cx2388x(state)) {
/* Restore GPIO configuration after f/w load */
cx25840_write(client, 0x160, gpio_oe);
cx25840_write(client, 0x164, gpio_da);
}
return check_fw_load(client, size);
}
static int get_balance(struct i2c_client *client)
{
/* balance is 7 bit, 0 to -96dB */
/* check PATH1_BAL_LEVEL */
int balance = cx25840_read(client, 0x8d5) & 0x7f;
/* check PATH1_BAL_LEFT */
if ((cx25840_read(client, 0x8d5) & 0x80) == 0)
balance = 0x80 - balance;
else
balance = 0x80 + balance;
return balance << 8;
}
static int check_fw_load(struct i2c_client *client, int size)
{
/* DL_ADDR_HB DL_ADDR_LB */
int s = cx25840_read(client, 0x801) << 8;
s |= cx25840_read(client, 0x800);
if (size != s) {
v4l_err(client, "firmware %s load failed\n", firmware);
return -EINVAL;
}
v4l_info(client, "loaded %s firmware (%d bytes)\n", firmware, size);
return 0;
}
static int get_treble(struct i2c_client *client)
{
/* treble is 49 steps +12dB to -12dB */
/* check PATH1_EQ_TREBLE_VOL */
int treble = cx25840_read(client, 0x8db) & 0x3f;
treble = (((48 - treble) * 0xffff) + 47) / 48;
return treble;
}
static int get_bass(struct i2c_client *client)
{
/* bass is 49 steps +12dB to -12dB */
/* check PATH1_EQ_BASS_VOL */
int bass = cx25840_read(client, 0x8d9) & 0x3f;
bass = (((48 - bass) * 0xffff) + 47) / 48;
return bass;
}
static int get_volume(struct i2c_client *client)
{
/* Volume runs +18dB to -96dB in 1/2dB steps
* change to fit the msp3400 -114dB to +12dB range */
/* check PATH1_VOLUME */
int vol = 228 - cx25840_read(client, 0x8d4);
vol = (vol / 2) + 23;
return vol << 9;
}
static int get_volume(struct i2c_client *client)
{
struct cx25840_state *state = i2c_get_clientdata(client);
int vol;
if (state->unmute_volume >= 0)
return state->unmute_volume;
/* Volume runs +18dB to -96dB in 1/2dB steps
* change to fit the msp3400 -114dB to +12dB range */
/* check PATH1_VOLUME */
vol = 228 - cx25840_read(client, 0x8d4);
vol = (vol / 2) + 23;
return vol << 9;
}
static int get_mute(struct i2c_client *client)
{
/* check SRC1_MUTE_EN */
return cx25840_read(client, 0x8d3) & 0x2 ? 1 : 0;
}
