hwstub: rework i2c completely

Change-Id: I1e5f87f15f0ca9586d8185316ffcaeef6d9d4d38

1 files changed, 34 insertions, 0 deletions

diff --git a/utils/hwstub/tools/lua/stmp/pinctrl.lua b/utils/hwstub/tools/lua/stmp/pinctrl.lua
index 5346c75b35..013b29701e 100644
--- a/utils/hwstub/tools/lua/stmp/pinctrl.lua
+++ b/utils/hwstub/tools/lua/stmp/pinctrl.lua
@@ -86,6 +86,7 @@ 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("* pull: enable/disable pullup (optional)")
 hh:add("All non-subtable entries are ignored")
 hh:add("All unknown parameters in subtablkes are ignored")
 hh:add("")
@@ -112,6 +113,10 @@ function STMP.pinctrl.configure(tbl)
                     if v.output then pin.set()
                     else pin.clr() end
                 end
+                if v.pull ~= nil then
+                    STMP.debug(string.format("cfg B%dP%02d pull %s", v.bank, v.pin, v.pull))
+                    pin.pull(v.pull)
+                end
             end
         end
     end
@@ -291,3 +296,32 @@ function STMP.pinctrl.lcdif.setup_system(bus_width, busy)
         STMP.pinctrl.configure_ex(busy_pin)
     end
 end
+
+STMP.pinctrl.i2c = {}
+
+local hhh = hh:create_topic("setup")
+hhh:add("The STMP.pinctrl.i2c.setup() functions configure the I2C pins.")
+
+function STMP.pinctrl.i2c.setup()
+    local pins =
+    {
+        stmp3700 =
+        {
+            all =
+            {
+                i2c_scl = { bank = 2, pin = 5, muxsel = "MAIN", pull = true},
+                i2c_sda = { bank = 2, pin = 6, muxsel = "MAIN", pull = true}
+            }
+        },
+        imx233 =
+        {
+            all =
+            {
+                i2c_scl = { bank = 0, pin = 30, muxsel = "MAIN", pull = true},
+                i2c_sda = { bank = 0, pin = 31, muxsel = "MAIN", pull = true}
+            }
+        }
+    }
+
+    STMP.pinctrl.configure_ex(pins)
+end