/** \brief This function is the driver entry point for the init phase
* of the PCI bus allocator. It will initialize all the needed parts
* of NC_FPGA.
* @param *dev Pointer to the used PCI device
* @return void Nothing is given back
*/
static void nc_fpga_init(struct device *dev)
{
void *bar0_ptr = NULL;
uint8_t cmd_reg;
uint32_t cap = 0;
/* All we need is mapped to BAR 0, get the address. */
bar0_ptr = (void *)(pci_read_config32(dev, PCI_BASE_ADDRESS_0) &
~PCI_BASE_ADDRESS_MEM_ATTR_MASK);
cmd_reg = pci_read_config8(dev, PCI_COMMAND);
/* Ensure BAR0 has a valid value. */
if (!bar0_ptr || !(cmd_reg & PCI_COMMAND_MEMORY))
return;
/* Ensure this is really a NC FPGA by checking magic register. */
if (read32(bar0_ptr + NC_MAGIC_OFFSET) != NC_FPGA_MAGIC)
return;
/* Open hwinfo block. */
if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS)
return;
/* Set up FAN controller and temperature monitor according to */
/* capability bits. */
cap = read32(bar0_ptr + NC_CAP1_OFFSET);
if (cap & (NC_CAP1_TEMP_MON | NC_CAP1_FAN_CTRL))
init_temp_mon(bar0_ptr + NC_FANMON_CTRL_OFFSET);
if (cap & NC_CAP1_FAN_CTRL)
init_fan_ctrl(bar0_ptr + NC_FANMON_CTRL_OFFSET);
}
static void wait_for_legacy_dev(void *unused)
{
uint32_t legacy_delay, us_since_boot;
struct stopwatch sw;
/* Open main hwinfo block. */
if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS)
return;
/* Get legacy delay parameter from hwinfo. */
if (hwilib_get_field(LegacyDelay, (uint8_t *) &legacy_delay,
sizeof(legacy_delay)) != sizeof(legacy_delay))
return;
us_since_boot = get_us_since_boot();
/* No need to wait if the time since boot is already long enough.*/
if (us_since_boot > legacy_delay)
return;
stopwatch_init_msecs_expire(&sw, (legacy_delay - us_since_boot) / 1000);
printk(BIOS_NOTICE, "Wait remaining %d of %d us for legacy devices...",
legacy_delay - us_since_boot, legacy_delay);
stopwatch_wait_until_expired(&sw);
printk(BIOS_NOTICE, "done!\n");
}
/** \brief This functions sets up the DP2LVDS-converter to be used with the
* appropriate lcd panel
* @param *hwi_block Filename in CBFS of the block to use as HW-Info
* @return 0 on success or error code
*/
int ptn3460_init(char *hwi_block)
{
struct ptn_3460_config cfg;
int status;
uint8_t disp_con = 0, color_depth = 0;
uint8_t edid_data[0x80];
uint8_t hwid[4], tcu31_hwid[4] = {7, 9, 2, 0};
if (!hwi_block || hwilib_find_blocks(hwi_block) != CB_SUCCESS) {
printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n",
hwi_block);
return 1;
}
status = i2c_init(PTN_I2C_CONTROLER);
if (status)
return (PTN_BUS_ERROR | status);
/* Get all needed information from hwinfo block */
if (hwilib_get_field(Edid, edid_data, 0x80) != sizeof(edid_data)) {
printk(BIOS_ERR, "LCD: No EDID data available in %s\n",
hwi_block);
return 1;
}
if ((hwilib_get_field(PF_DisplCon, &disp_con, 1) != 1)) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n",
hwi_block);
return 1;
}
if (hwilib_get_field(PF_Color_Depth ,&color_depth, 1) != 1) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n",
hwi_block);
return 1;
}
if (hwilib_get_field(HWID, hwid, sizeof(hwid)) != sizeof(hwid)) {
printk(BIOS_ERR, "LCD: Missing HW-ID from %s\n",
hwi_block);
return 1;
}
/* Here, all the desired information for setting up DP2LVDS converter*/
/* are present. Inside the converter, table 6 will be used for */
/* the timings. */
if ((status = ptn3460_write_edid(6, edid_data)) != 0)
return status;
/* Select this table to be emulated */
ptn_select_edid(6);
/* Read PTN configuration data */
status = i2c_read(PTN_I2C_CONTROLER, PTN_SLAVE_ADR, PTN_CONFIG_OFF,
(u8*)&cfg, PTN_CONFIG_LEN);
if (status)
return (PTN_BUS_ERROR | status);
/* Set up configuration data according to the hwinfo blocks we get */
cfg.dp_interface_ctrl = 0;
cfg.lvds_interface_ctrl1 = 0x00;
if (disp_con == PF_DISPLCON_LVDS_DUAL)
cfg.lvds_interface_ctrl1 |= 0x0b; /* Turn on dual LVDS lane and clock */
if (color_depth == PF_COLOR_DEPTH_6BIT)
cfg.lvds_interface_ctrl1 |= 0x20; /* Use 18 bits per pixel */
cfg.lvds_interface_ctrl2 = 0x03; /* no clock spreading, 300 mV LVDS swing */
if (memcmp(hwid, tcu31_hwid, sizeof(hwid)))
cfg.lvds_interface_ctrl3 = 0x00; /* no LVDS signal swap */
else
cfg.lvds_interface_ctrl3 = 0x01; /* swap LVDS even and odd */
cfg.t2_delay = 1; /* Delay T2 (VDD to LVDS active) by 16 ms */
cfg.t3_timing = 10; /* 500 ms from LVDS to backlight active */
cfg.t12_timing = 20; /* 1 second re-power delay */
cfg.t4_timing = 3; /* 150 ms backlight off to LVDS inactive */
cfg.t5_delay = 1; /* Delay T5 (LVDS to VDD inactive) by 16 ms */
cfg.backlight_ctrl = 0; /* Enable backlight control */
/* Write back configuration data to PTN3460 */
status = i2c_write(PTN_I2C_CONTROLER, PTN_SLAVE_ADR, PTN_CONFIG_OFF,
(u8*)&cfg, PTN_CONFIG_LEN);
if (status)
return (PTN_BUS_ERROR | status);
else
return PTN_NO_ERROR;
}
