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--
-- LCDIF
--
STMP.lcdif = {}
function STMP.lcdif.setup_clock()
if not STMP.is_stmp3600() then
HW.CLKCTRL.CLKSEQ.BYPASS_PIX.set()
HW.CLKCTRL.PIX.CLKGATE.write(0)
HW.CLKCTRL.PIX.DIV.write(1)
end
end
function STMP.lcdif.init()
HW.LCDIF.CTRL.SFTRST.clr()
HW.LCDIF.CTRL.CLKGATE.clr()
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_databus_width(bus_width)
local v = 0
if bus_width == 8 then
v = 1
elseif bus_width == 18 then
v = 2
elseif bus_width == 24 then
v = 3
end
HW.LCDIF.CTRL.LCD_DATABUS_WIDTH.write(v)
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
local v = 0
if bus_width == 8 then
v = 1
elseif bus_width == 18 then
v = 2
elseif bus_width == 24 then
v = 3
end
HW.LCDIF.CTRL.WORD_LENGTH.write(v)
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
local v = HW.LCDIF.CTRL.WORD_LENGTH.read()
if v == 0 then return 16
elseif v == 1 then return 8
elseif v == 2 then return 18
else return 24 end
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
if STMP.is_stmp3600() or STMP.is_stmp3700() then
HW.LCDIF.CTRL.DATA_SWIZZLE.write(v)
else
HW.LCDIF.CTRL.INPUT_DATA_SWIZZLE.write(v)
end
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.wait_ready()
while HW.LCDIF.CTRL.RUN.read() == 1 do
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))
if STMP.is_imx233() then
HW.LCDIF.CTRL.LCDIF_MASTER.clr()
end
HW.LCDIF.CTRL.RUN.clr()
if STMP.is_stmp3600() or STMP.is_stmp3700() then
HW.LCDIF.CTRL.COUNT.write(#data)
else
HW.LCDIF.TRANSFER_COUNT.V_COUNT.write(1)
HW.LCDIF.TRANSFER_COUNT.H_COUNT.write(#data)
end
HW.LCDIF.CTRL.RUN.set()
if wl == 18 then
wl = 32
end
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
STMP.debug(string.format("lcdif: write 0x%x", v))
HW.LCDIF.DATA.write(v)
end
STMP.debug("lcdif: wait end of command")
STMP.lcdif.wait_ready()
end
function STMP.lcdif.set_mode86(mode86)
if mode86 then
HW.LCDIF.CTRL.MODE86.set()
else
HW.LCDIF.CTRL.MODE86.clr()
end
end
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