unsigned char *einkfb_shim_alloc_kernelbuffer(unsigned long size, struct einkfb_info *info)
{
unsigned char *result = NULL;
if ( info->dma )
{
result = EINKFB_MALLOC_MOD(size, &kernelbuffer_phys);
if ( result )
einkfb_memset(result, EINKFB_WHITE, size);
}
return ( result );
}
static bool broadsheet_sw_init(struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix)
{
bool result = EINKFB_FAILURE;
bs_resolution_t res;
// If we're overridden with a value other than portrait or landscape, switch us
// back to the default.
//
switch ( bs_orientation )
{
case EINKFB_ORIENT_LANDSCAPE:
case EINKFB_ORIENT_PORTRAIT:
break;
default:
bs_orientation = EINKFB_ORIENT_PORTRAIT;
break;
}
// Initialize enough of the hardware to ascertain the resolution we need to set up for.
//
bs_sw_init_controller(FULL_BRINGUP_CONTROLLER, bs_orientation, &res);
scratchfb_size = BPP_SIZE((res.x_hw*res.y_hw), EINKFB_8BPP);
broadsheet_num_ram_banks = broadsheet_get_ram_size()/BROADSHEET_RAM_BANK_SIZE;
scratchfb = broadsheet_needs_dma() ? EINKFB_MALLOC_MOD(scratchfb_size, &scratchfb_phys)
: vmalloc(scratchfb_size);
if ( scratchfb )
{
switch ( bs_bpp )
{
// If we're overridden with a value other than 2, 4, or 8 bpp, switch us
// back to the default.
//
default:
bs_bpp = BPP;
case EINKFB_2BPP:
case EINKFB_4BPP:
case EINKFB_8BPP:
broadsheet_size = BPP_SIZE((res.x_sw*res.y_sw), bs_bpp);
broadsheet_var.bits_per_pixel = bs_bpp;
broadsheet_fix.smem_len = broadsheet_size;
broadsheet_fix.line_length = BPP_SIZE(res.x_sw, bs_bpp);
break;
}
broadsheet_var.xres = broadsheet_var.xres_virtual = res.x_sw;
broadsheet_var.yres = broadsheet_var.yres_virtual = res.y_sw;
broadsheet_var.width = res.x_mm;
broadsheet_var.height = res.y_mm;
*var = broadsheet_var;
*fix = broadsheet_fix;
result = EINKFB_SUCCESS;
}
return ( result );
}
