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Sansa Connect: Fix GIO initialization and screen wakeup.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31119 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Moń 2011-12-03 15:03:44 +00:00
parent 488ee77ea2
commit 5e805f2041
4 changed files with 28 additions and 25 deletions
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29
firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
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@ -214,22 +214,6 @@ static void parse_button_state(unsigned char *buf)
#endif
}
/* HID Slave Select - GIO14 */
#define HID_SS (1<<14)
static inline void select_hid(bool on)
{
if (on == true)
{
/* SS is active low */
IO_GIO_BITCLR0 = HID_SS;
}
else
{
IO_GIO_BITSET0 = HID_SS;
}
}
static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
{
int i;
@ -239,7 +223,6 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
bitset16(&IO_CLK_MOD2, CLK_MOD2_SIF1);
IO_SERIAL1_TX_ENABLE = 0x0001;
select_hid(true);
for (i = 0; i<n; i++)
{
@ -254,10 +237,10 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
if (buf_rx != NULL)
buf_rx[i] = rxdata & 0xFF;
udelay(100);
/* seems to be unneccessary */
//udelay(100);
}
select_hid(false);
IO_SERIAL1_TX_ENABLE = 0;
bitclr16(&IO_CLK_MOD2, CLK_MOD2_SIF1);
@ -280,14 +263,16 @@ void avr_hid_init(void)
{
/*
setup alternate GIO functions:
GIO29 - SIF1 Enable
GIO29 - SIF1 Enable (Directly connected to AVR's SS)
GIO30 - SIF1 Clock
GIO31 - SIF1 Data In
GIO32 - SIF1 Data Out
*/
IO_GIO_FSEL2 = (IO_GIO_FSEL2 & 0x00FF) | 0xAA00;
bitclr16(&IO_GIO_DIR0, HID_SS); /* set GIO14 as output */
/* GIO29, GIO30 - outputs, GIO31 - input */
IO_GIO_DIR1 = (IO_GIO_DIR1 & ~((1 << 13) | (1 << 14))) | (1 << 15);
/* GIO32 - output */
bitclr16(&IO_GIO_DIR2, (1 << 0));
/* RATE = 219 (0xDB) -> 200 kHz */
IO_SERIAL1_MODE = 0x6DB;