Improve ipod i2c driver somewhat by at least taking advantage of the in-device addressing in the pcf50605, also switch to a 10bit resistive divider for the ipod battery reading, this is easily configurable if it needs changing, or even to become a user/runtime setting

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8980 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 10 insertions, 0 deletions

diff --git a/firmware/drivers/i2c-pp5002.c b/firmware/drivers/i2c-pp5002.c
index dc26d8a5d9..958ddeebe4 100644
--- a/firmware/drivers/i2c-pp5002.c
+++ b/firmware/drivers/i2c-pp5002.c
@@ -136,6 +136,16 @@ int ipod_i2c_send_byte(unsigned int addr, int data0)
     return ipod_i2c_send_bytes(addr, 1, data);
 }
 
+int i2c_readbytes(unsigned int dev_addr, int addr, int len, unsigned char *data) {
+    unsigned int temp;
+    int i;
+    ipod_i2c_send_byte(dev_addr, addr);
+    for (i = 0; i < len; i++) {
+        ipod_i2c_read_byte(dev_addr, &temp);
+        data[i] = temp;
+    }
+    return i;
+}
 
 int i2c_readbyte(unsigned int dev_addr, int addr)
 {