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-rw-r--r--utils/hwstub/tools/lua/stmp/pinctrl.lua253
1 files changed, 253 insertions, 0 deletions
diff --git a/utils/hwstub/tools/lua/stmp/pinctrl.lua b/utils/hwstub/tools/lua/stmp/pinctrl.lua
new file mode 100644
index 0000000000..2676f6476b
--- /dev/null
+++ b/utils/hwstub/tools/lua/stmp/pinctrl.lua
@@ -0,0 +1,253 @@
+---
+--- PINCTRL
+---
+STMP.pinctrl = {}
+
+local h = HELP:get_topic("STMP"):create_topic("pinctrl")
+h:add("The STMP.pinctrl table handles the pinctrl device for all STMPs.")
+h:add("It provides a simple abstraction to set individual pins.")
+
+local hh = h:create_topic("pin")
+hh:add("The STMP.pinctrl.pin(x,yy) function returns a table for the pin BxPyy.")
+hh:add("Depending on the STMP family, the following function might be available.")
+hh:add("* read() returns the value of the pin (the pin does not need to be configured as GPIO)")
+hh:add("* write(x) sets the value of the pin (provided it is a GPIO with output enabled)")
+hh:add("* set() is equivalent to write(1)")
+hh:add("* clr() is equivalent to write(0)")
+hh:add("* enable() enables the gpio output (provided it is configured as GPIO).")
+hh:add("* disable() disables the gpio output (provided it is configured as GPIO)")
+hh:add("* muxsel(x) set pin function to x, which can be an integer or one of: MAIN, ALT1, ALT2, GPIO")
+
+function STMP.pinctrl.pin(bank,pin)
+ local t = {
+ read = function()
+ return bit32.extract(HW.PINCTRL.DINn[bank].read(), pin)
+ end,
+
+ write = function(val)
+ if val then t.set() else t.clr() end
+ end,
+
+ set = function()
+ HW.PINCTRL.DOUTn[bank].set(bit32.lshift(1, pin))
+ end,
+
+ clr = function()
+ HW.PINCTRL.DOUTn[bank].clr(bit32.lshift(1, pin))
+ end,
+
+ enable = function()
+ HW.PINCTRL.DOEn[bank].set(bit32.lshift(1, pin))
+ end,
+
+ disable = function()
+ HW.PINCTRL.DOEn[bank].clr(bit32.lshift(1, pin))
+ end,
+
+ muxsel = function(x)
+ if type(x) == "string" then
+ if x == "MAIN" then x = 0
+ elseif x == "ALT1" then x = 1
+ elseif x == "ALT2" then x = 2
+ elseif x == "GPIO" then x = 3
+ else error("Invalid muxsel string " .. x) end
+ end
+ local v = nil
+ if STMP.is_stmp3600() then
+ if pin < 16 then
+ v = HW.PINCTRL.MUXSELLn[bank]
+ else
+ v = HW.PINCTRL.MUXSELHn[bank]
+ end
+ else
+ v = HW.PINCTRL.MUXSELn[2 * bank + math.floor(pin / 16)]
+ end
+ v.write(bit32.replace(v.read(), x, (pin % 16) * 2, 2))
+ end
+ }
+ return t
+end
+
+hh = h:create_topic("configure")
+hh:add("The STMP.pinctrl.configure(tbl) function configures pins according to a table.")
+hh:add("The table must contain a list of subtable, each corresponding to a pin.")
+hh:add("Each subtable can configure one or more aspects of a specific pin.")
+hh:add("The following characteristics are understood:")
+hh:add("* bank: pin bank (mandatory)")
+hh:add("* pin: pin number (mandatory) ")
+hh:add("* muxsel: same values as STMP.pinctrl.pin().muxsel (optional)")
+hh:add("* enable: enable/disable output (optional)")
+hh:add("* output: set/clear output (optional)")
+hh:add("All non-subtable entries are ignored")
+hh:add("All unknown parameters in subtablkes are ignored")
+hh:add("")
+hh:add("Example:")
+hh:add("STMP.pinctrl.configure({{bank=0,pin=1,muxsel=\"GPIO\",enable=false},{bank=0,pin=2,muxsel=\"MAIN\"}})")
+
+function STMP.pinctrl.configure(tbl)
+ if type(tbl) ~= "table" then error("Parameter must be a table") end
+ for i,v in pairs(tbl) do
+ if type(v) == "table" then
+ if v.bank ~= nil and v.pin ~= nil then
+ local pin = STMP.pinctrl.pin(v.bank,v.pin)
+ if v.muxsel ~= nil then
+ STMP.debug(string.format("cfg B%dP%02d muxsel %s", v.bank, v.pin, v.muxsel))
+ pin.muxsel(v.muxsel)
+ end
+ if v.enable ~= nil then
+ STMP.debug(string.format("cfg B%dP%02d enable %s", v.bank, v.pin, v.enable))
+ if v.enable then pin.enable()
+ else pin.disable() end
+ end
+ if v.output ~= nil then
+ STMP.debug(string.format("cfg B%dP%02d output %s", v.bank, v.pin, v.output))
+ if v.output then pin.set()
+ else pin.clr() end
+ end
+ end
+ end
+ end
+end
+
+hh = h:create_topic("configure_ex")
+hh:add("The STMP.pinctrl.configure_ex(tbl) function configures pins according to a table.")
+hh:add("It is an enhanced version of configure which handles the different families and packages.")
+hh:add("The argument must be a table with one entry per STMP family.")
+hh:add("Each entry must a subtable with one subentry per package.")
+hh:add("Each subentry must be a valid argument to STMP.pinctrl.configure().")
+hh:add("The family names are the one returned by STMP.family.")
+hh:add("The table can also contain an entry \"all\" which apply to all families")
+hh:add("The package names are the one returned by STMP.digctl.package().")
+hh:add("The table can also contain an entry \"all\" which apply to all packages.")
+
+function STMP.pinctrl.configure_ex(tbl)
+ if type(tbl) ~= "table" then error("Parameter must be a table") end
+ local pack = STMP.digctl.package()
+ if tbl[STMP.family] ~= nil then
+ if tbl[STMP.family][pack] ~= nil then STMP.pinctrl.configure(tbl[STMP.family][pack]) end
+ if tbl[STMP.family]["all"] ~= nil then STMP.pinctrl.configure(tbl[STMP.family]["all"]) end
+ end
+ if tbl["all"] ~= nil then
+ if tbl["all"][pack] ~= nil then STMP.pinctrl.configure(tbl["all"][pack]) end
+ if tbl["all"]["all"] ~= nil then STMP.pinctrl.configure(tbl["all"]["all"]) end
+ end
+end
+
+hh = h:create_topic("lcdif")
+hh:add("The STMP.pinctrl.lcdif tables provides some high level routines to configure the pins.")
+hh:add("It is specialised to configure the LCDIF pins correctly.")
+hh:add("Some of the modes may not be available on all STMP families.")
+
+STMP.pinctrl.lcdif = {}
+
+local hhh = hh:create_topic("setup_system")
+hhh:add("The STMP.pinctrl.lcdif.setup_system(bus_width,busy) functions configure the LCDIF pins.")
+hhh:add("It only take cares of the pins used in system mode and for a specified bus width.")
+hhh:add("The handled bus widths are 8, 16 and 18")
+hhh:add("The busy pin is configured only if busy is true")
+
+function STMP.pinctrl.lcdif.setup_system(bus_width, busy)
+ local common =
+ {
+ stmp3600 =
+ {
+ all =
+ {
+ lcd_reset = { bank = 1, pin = 16, muxsel = "MAIN"},
+ lcd_rs = { bank = 1, pin = 17, muxsel = "MAIN"},
+ lcd_wr = { bank = 1, pin = 18, muxsel = "MAIN"},
+ lcd_cs = { bank = 1, pin = 19, muxsel = "MAIN"},
+ lcd_d0 = {bank = 1, pin = 0, muxsel = "MAIN"},
+ lcd_d1 = {bank = 1, pin = 1, muxsel = "MAIN"},
+ lcd_d2 = {bank = 1, pin = 2, muxsel = "MAIN"},
+ lcd_d3 = {bank = 1, pin = 3, muxsel = "MAIN"},
+ lcd_d4 = {bank = 1, pin = 4, muxsel = "MAIN"},
+ lcd_d5 = {bank = 1, pin = 5, muxsel = "MAIN"},
+ lcd_d6 = {bank = 1, pin = 6, muxsel = "MAIN"},
+ lcd_d7 = {bank = 1, pin = 7, muxsel = "MAIN"}
+ }
+ },
+ stmp3700 =
+ {
+ all =
+ {
+ lcd_reset = { bank = 1, pin = 16, muxsel = "MAIN"},
+ lcd_rs = { bank = 1, pin = 17, muxsel = "MAIN"},
+ lcd_wr = { bank = 1, pin = 18, muxsel = "MAIN"},
+ lcd_rd = { bank = 1, pin = 19, muxsel = "MAIN"},
+ lcd_cs = { bank = 1, pin = 20, muxsel = "MAIN"},
+ lcd_d0 = {bank = 1, pin = 0, muxsel = "MAIN"},
+ lcd_d1 = {bank = 1, pin = 1, muxsel = "MAIN"},
+ lcd_d2 = {bank = 1, pin = 2, muxsel = "MAIN"},
+ lcd_d3 = {bank = 1, pin = 3, muxsel = "MAIN"},
+ lcd_d4 = {bank = 1, pin = 4, muxsel = "MAIN"},
+ lcd_d5 = {bank = 1, pin = 5, muxsel = "MAIN"},
+ lcd_d6 = {bank = 1, pin = 6, muxsel = "MAIN"},
+ lcd_d7 = {bank = 1, pin = 7, muxsel = "MAIN"}
+ }
+ }
+ }
+ local bus8_15 =
+ {
+ stmp3600 =
+ {
+ all =
+ {
+ lcd_d8 = {bank = 1, pin = 8, muxsel = "MAIN"},
+ lcd_d9 = {bank = 1, pin = 9, muxsel = "MAIN"},
+ lcd_d10 = {bank = 1, pin = 10, muxsel = "MAIN"},
+ lcd_d11 = {bank = 1, pin = 11, muxsel = "MAIN"},
+ lcd_d12 = {bank = 1, pin = 12, muxsel = "MAIN"},
+ lcd_d13 = {bank = 1, pin = 13, muxsel = "MAIN"},
+ lcd_d14 = {bank = 1, pin = 14, muxsel = "MAIN"},
+ lcd_d15 = {bank = 1, pin = 15, muxsel = "MAIN"}
+ }
+ },
+ stmp3700 =
+ {
+ all =
+ {
+ lcd_d8 = {bank = 1, pin = 8, muxsel = "MAIN"},
+ lcd_d9 = {bank = 1, pin = 9, muxsel = "MAIN"},
+ lcd_d10 = {bank = 1, pin = 10, muxsel = "MAIN"},
+ lcd_d11 = {bank = 1, pin = 11, muxsel = "MAIN"},
+ lcd_d12 = {bank = 1, pin = 12, muxsel = "MAIN"},
+ lcd_d13 = {bank = 1, pin = 13, muxsel = "MAIN"},
+ lcd_d14 = {bank = 1, pin = 14, muxsel = "MAIN"},
+ lcd_d15 = {bank = 1, pin = 15, muxsel = "MAIN"}
+ }
+ }
+ }
+ local bus16_17 =
+ {
+
+ }
+ local busy_pin =
+ {
+ stmp3600 =
+ {
+ all =
+ {
+ lcd_busy = { bank = 1, pin = 21, muxsel = "MAIN"},
+ }
+ },
+ stmp3700 =
+ {
+ all =
+ {
+ lcd_busy = { bank = 1, pin = 21, muxsel = "MAIN"},
+ }
+ },
+ }
+
+ STMP.pinctrl.configure_ex(common)
+ if bus_width > 8 then
+ STMP.pinctrl.configure_ex(bus8_15)
+ end
+ if bus_width > 16 then
+ STMP.pinctrl.configure_ex(bus16_17)
+ end
+ if busy then
+ STMP.pinctrl.configure_ex(busy_pin)
+ end
+end