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Diffstat (limited to 'utils/hwstub/tools/lua/stmp/lcdif.lua')
-rw-r--r--utils/hwstub/tools/lua/stmp/lcdif.lua100
1 files changed, 100 insertions, 0 deletions
diff --git a/utils/hwstub/tools/lua/stmp/lcdif.lua b/utils/hwstub/tools/lua/stmp/lcdif.lua
new file mode 100644
index 0000000000..0878cb1139
--- /dev/null
+++ b/utils/hwstub/tools/lua/stmp/lcdif.lua
@@ -0,0 +1,100 @@
+--
+-- LCDIF
+--
+
+STMP.lcdif = {}
+
+function STMP.lcdif.init()
+ HW.LCDIF.CTRL.SFTRST.set()
+ HW.LCDIF.CTRL.SFTRST.clr()
+ HW.LCDIF.CTRL.CLKGATE.clr()
+end
+
+function STMP.lcdif.set_system_timing(data_setup, data_hold, cmd_setup, cmd_hold)
+ HW.LCDIF.TIMING.CMD_HOLD.write(cmd_hold)
+ HW.LCDIF.TIMING.CMD_SETUP.write(cmd_setup)
+ HW.LCDIF.TIMING.DATA_HOLD.write(data_hold)
+ HW.LCDIF.TIMING.DATA_SETUP.write(data_setup)
+end
+
+function STMP.lcdif.set_byte_packing_format(val)
+ HW.LCDIF.CTRL1.BYTE_PACKING_FORMAT.write(val)
+end
+
+function STMP.lcdif.set_reset(val)
+ if STMP.is_stmp3600() then
+ HW.LCDIF.CTRL.RESET.write(val)
+ else
+ HW.LCDIF.CTRL1.RESET.write(val)
+ end
+end
+
+function STMP.lcdif.set_word_length(bus_width)
+ if STMP.is_stmp3600() or STMP.is_stmp3700() then
+ if bus_width == 8 then
+ HW.LCDIF.CTRL.WORD_LENGTH.set()
+ else
+ HW.LCDIF.CTRL.WORD_LENGTH.clr()
+ end
+ else
+ error("STMP.lcdif.set_word_length: unimplemented")
+ end
+end
+
+function STMP.lcdif.get_word_length()
+ if STMP.is_stmp3600() or STMP.is_stmp3700() then
+ if HW.LCDIF.CTRL.WORD_LENGTH.read() == 1 then
+ return 8
+ else
+ return 16
+ end
+ else
+ error("STMP.lcdif.get_word_length: unimplemented")
+ end
+end
+
+function STMP.lcdif.set_data_swizzle(swizzle)
+ local v = swizzle
+ if type(swizzle) == "string" then
+ if swizzle == "NONE" then
+ v = 0
+ else
+ error("unimplemented")
+ end
+ end
+ HW.LCDIF.CTRL.DATA_SWIZZLE.write(v)
+end
+
+function STMP.lcdif.is_busy()
+ if STMP.is_stmp3600() then
+ return HW.LCDIF.CTRL.FIFO_STATUS.read() == 0
+ else
+ return HW.LCDIF.STAT.TXFIFO_FULL.read() == 1
+ end
+end
+
+function STMP.lcdif.send_pio(data_mode, data)
+ local wl = STMP.lcdif.get_word_length()
+ if data_mode then
+ HW.LCDIF.CTRL.DATA_SELECT.set()
+ else
+ HW.LCDIF.CTRL.DATA_SELECT.clr()
+ end
+ STMP.debug(string.format("lcdif: count = %d", #data))
+ HW.LCDIF.CTRL.RUN.clr()
+ HW.LCDIF.CTRL.COUNT.write(#data)
+ HW.LCDIF.CTRL.RUN.set()
+ local i = 1
+ while i <= #data do
+ local v = 0
+ local v_size = 0
+ while i <= #data and v_size + wl <= 32 do
+ v = bit32.bor(v, bit32.lshift(data[i], v_size))
+ v_size = v_size + wl
+ i = i + 1
+ end
+ STMP.debug(string.format("lcdif: i=%d send 0x%x", i, v))
+ while STMP.lcdif.is_busy() do STMP.debug("lcdif: fifo full") end
+ HW.LCDIF.DATA.write(v)
+ end
+end \ No newline at end of file