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Ebc offset temp #5

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Ebc offset temp #5

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517b746
Code for offsetting the EBC temperature
talpadk Aug 13, 2023
3248c51
Disabled the printk as they do generate a lot of output
talpadk Aug 13, 2023
e82062b
Changes to indentation to match the kernels tab and size 8
talpadk Aug 13, 2023
ee6c34b
Added a variable that can be used to poll the panel "temperature"
talpadk Aug 13, 2023
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20 changes: 18 additions & 2 deletions drivers/gpu/drm/rockchip/rockchip_ebc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -260,6 +260,14 @@ static int temp_override = 0;
module_param(temp_override, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(temp_override, "Values > 0 override the temperature");

static int temp_offset = 0;
module_param(temp_offset, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(temp_offset, "Values > 0 is subtracted from the temperature to compensate for the pcb sensor being hotter than the display");

static int panel_temp = 0;
module_param(panel_temp, int, S_IRUGO);
MODULE_PARM_DESC(panel_temp, "The currently used value for the panel temperature");


DEFINE_DRM_GEM_FOPS(rockchip_ebc_fops);

Expand Down Expand Up @@ -1085,8 +1093,16 @@ static void rockchip_ebc_refresh(struct rockchip_ebc *ebc,

if (temp_override > 0){
printk(KERN_INFO "rockchip-ebc: override temperature from %i to %i\n", temp_override, temperature);
temperature = temp_override;
}
temperature = temp_override;
} else if (temp_offset > 0){
//int old_val = temperature;
if (temperature > temp_offset)
temperature -= temp_offset;
else
temperature = 0;
//printk(KERN_INFO "rockchip-ebc: temp offset from %i to %i\n", old_val, temperature);
}
panel_temp = temperature;

ret = drm_epd_lut_set_temperature(&ebc->lut, temperature);
if (ret < 0)
Expand Down