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EEPROM2 updates #6

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koenkooi wants to merge 6 commits into from
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EEPROM2 updates #6

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63bf737
eeprom: use strings for usage and pullup/down
koenkooi Dec 30, 2011
28c5406
eeprom: report pins as PN_XX instead of internal mux name
koenkooi Dec 30, 2011
fb58852
eeprom.js: retrieve mux function from debugfs for pins that are marke…
koenkooi Dec 30, 2011
d60975a
bone.js: fix P8_29 mux name
koenkooi Dec 30, 2011
b9d8dfc
eeprom.js: remove spurious semicolon
koenkooi Dec 30, 2011
24fa5da
eeprom.js: mark unused pins as available
koenkooi Dec 30, 2011
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2 changes: 1 addition & 1 deletion bonescript/bone.js
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ exports.bone =
P8_26: { name: "GPIO1_29", gpio: gpio1+29, mux: "gpmc_csn0", eeprom: 162 },
P8_27: { name: "GPIO2_22", gpio: gpio2+22, mux: "lcd_vsync", eeprom: 202 },
P8_28: { name: "GPIO2_24", gpio: gpio2+24, mux: "lcd_pclk", eeprom: 206 },
P8_29: { name: "GPIO2_23", gpio: gpio2+23, mux: "lcd_hclk", eeprom: 204 },
P8_29: { name: "GPIO2_23", gpio: gpio2+23, mux: "lcd_vsync", eeprom: 204 },
P8_30: { name: "GPIO2_25", gpio: gpio2+25, mux: "lcd_ac_bias_en", eeprom: 208 },
P8_31: { name: "UART5_CTSN", gpio: gpio0+10, mux: "lcd_data14", eeprom: 102 },
P8_32: { name: "UART5_RTSN", gpio: gpio0+11, mux: "lcd_data15", eeprom: 104 },
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20 changes: 17 additions & 3 deletions bonescript/eeprom.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
var fs = require('fs');
var path = require('path');
var buffer = require('buffer');
var util = require('util');
bone = require('./bone').bone;
Expand Down Expand Up @@ -122,14 +123,27 @@ var parseCapeEeprom = function(x) {
var pinOffset = bone[pin].eeprom;
var pinData = x.readUint16BE(pinOffset);
var pinObject = {};
pinObject.used = (pinData & 0x8000) >> 15;
pinObject.used = (pinData & 0x8000) >> 15 ? 'used' : 'available';
if(pinData) {
pinObject.direction = ((pinData & 0x4000) >> 14) ? 'in' : 'out';
pinObject.pullup = (pinData & 0x3000) >> 12;
pinObject.pullup = (pinData & 0x3000) >> 12 ? 'pullup' : 'pulldown';
pinObject.mode = (pinData & 0x0007);

pinObject.function = {};
if(pinObject.used == "used") {
try {
// read mux from debugfs
muxReadout= fs.readFileSync("/sys/kernel/debug/omap_mux/" + bone[pin].mux, 'utf8');
pinObject.function = muxReadout.split("\n")[2].split("|")[pinObject.mode].replace('signals:', '').trim();
} catch(ex) {
//default mux
pinObject.function = bone[pin].name;
}
}

pinObject.data = x.hexSlice(pinOffset, pinOffset+2);
data.eeprom[bone[pin].name] = pinObject;
}
data.eeprom[pin] = pinObject;
}
}
return(data);
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