| ================= |
| What is sa1100fb? |
| ================= |
| |
| .. [This file is cloned from VesaFB/matroxfb] |
| |
| |
| This is a driver for a graphic framebuffer for the SA-1100 LCD |
| controller. |
| |
| Configuration |
| ============== |
| |
| For most common passive displays, giving the option:: |
| |
| video=sa1100fb:bpp:<value>,lccr0:<value>,lccr1:<value>,lccr2:<value>,lccr3:<value> |
| |
| on the kernel command line should be enough to configure the |
| controller. The bits per pixel (bpp) value should be 4, 8, 12, or |
| 16. LCCR values are display-specific and should be computed as |
| documented in the SA-1100 Developer's Manual, Section 11.7. Dual-panel |
| displays are supported as long as the SDS bit is set in LCCR0; GPIO<9:2> |
| are used for the lower panel. |
| |
| For active displays or displays requiring additional configuration |
| (controlling backlights, powering on the LCD, etc.), the command line |
| options may not be enough to configure the display. Adding sections to |
| sa1100fb_init_fbinfo(), sa1100fb_activate_var(), |
| sa1100fb_disable_lcd_controller(), and sa1100fb_enable_lcd_controller() |
| will probably be necessary. |
| |
| Accepted options:: |
| |
| bpp:<value> Configure for <value> bits per pixel |
| lccr0:<value> Configure LCD control register 0 (11.7.3) |
| lccr1:<value> Configure LCD control register 1 (11.7.4) |
| lccr2:<value> Configure LCD control register 2 (11.7.5) |
| lccr3:<value> Configure LCD control register 3 (11.7.6) |
| |
| Mark Huang <mhuang@livetoy.com> |
