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copy the touchscreen calibration

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Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
This commit is contained in:
Sasha Finkelstein 2023-01-21 19:44:56 +03:00 committed by Hector Martin
parent 90d0cd6b89
commit d110da1e75
1 changed files with 25 additions and 0 deletions
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25
src/kboot.c
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@ -660,6 +660,29 @@ static int dt_set_bluetooth(void)
return 0;
}
static int dt_set_multitouch(void)
{
const char *path = fdt_get_alias(dt, "touchbar0");
if (path == NULL)
return 0;
int node = fdt_path_offset(dt, path);
if (node < 0)
bail("FDT: alias points at nonexistent node");
int anode = adt_path_offset(adt, "/arm-io/spi0/multi-touch");
if (anode < 0)
bail("ADT /arm-io/spi0/multi-touch not found\n");
u32 len;
const u8 *cal_blob = adt_getprop(adt, anode, "multi-touch-calibration", &len);
if (!cal_blob || !len)
bail("ADT: Failed to get multi-touch-calibration");
fdt_setprop(dt, node, "apple,z2-cal-blob", cal_blob, len);
return 0;
}
static int dt_set_wifi(void)
{
int anode = adt_path_offset(adt, "/arm-io/wlan");
@ -1873,6 +1896,8 @@ int kboot_prepare_dt(void *fdt)
return -1;
if (dt_set_gpu(dt))
return -1;
if (dt_set_multitouch())
return -1;
if (dt_disable_missing_devs("usb-drd", "usb@", 8))
return -1;
if (dt_disable_missing_devs("i2c", "i2c@", 8))