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digsy_mtc: Add delay in SPI transfers to the companion controller.

Browse Source 
While at it, remove initialization of variables which will be set
before usage in all cases.

Signed-off-by: Detlev Zundel <dzu@denx.de>
This commit is contained in:
Detlev Zundel 2009-08-05 18:37:44 +02:00 committed by Wolfgang Denk
parent 0bf00750e0
commit 0b40bd439a
1 changed files with 27 additions and 20 deletions
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47
board/digsy_mtc/cmd_mtc.c
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@ -44,6 +44,19 @@ static const char *led_names[] = {
""
};
static int msp430_xfer(const void *dout, void *din)
{
int err;
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, dout, din,
SPI_XFER_BEGIN | SPI_XFER_END);
/* The MSP chip needs time to ready itself for the next command */
udelay(1000);
return err;
}
static void mtc_calculate_checksum(tx_msp_cmd *packet)
{
int i;
@ -59,7 +72,7 @@ static int do_mtc_led(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
int i;
if (argc < 2) {
@ -102,8 +115,7 @@ static int do_mtc_led(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd_val2 = 0;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
return err;
}
@ -112,7 +124,7 @@ static int do_mtc_key(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
memset(&pcmd, 0, sizeof(pcmd));
memset(&prx, 0, sizeof(prx));
@ -120,8 +132,7 @@ static int do_mtc_key(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd = CMD_GET_VIM;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
if (!err) {
/* function returns '0' if key is pressed */
@ -135,7 +146,7 @@ static int do_mtc_digout(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
uchar channel_mask = 0;
if (argc < 3) {
@ -155,8 +166,7 @@ static int do_mtc_digout(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.user_out = channel_mask;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
return err;
}
@ -165,7 +175,7 @@ static int do_mtc_digin(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
uchar channel_num = 0;
if (argc < 2) {
@ -185,8 +195,7 @@ static int do_mtc_digin(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd = CMD_GET_VIM;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
if (!err) {
/* function returns '0' when digin is on */
@ -213,8 +222,8 @@ static int do_mtc_appreg(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd_val2 = 0; /* =0 means read appreg */
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
if (!err) {
sprintf(buf, "%d", prx.ack2);
setenv("appreg", buf);
@ -227,7 +236,7 @@ static int do_mtc_version(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
memset(&pcmd, 0, sizeof(pcmd));
memset(&prx, 0, sizeof(prx));
@ -235,8 +244,7 @@ static int do_mtc_version(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd = CMD_FW_VERSION;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
if (!err) {
printf("FW V%d.%d.%d / HW %d\n",
@ -250,7 +258,7 @@ static int do_mtc_state(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
tx_msp_cmd pcmd;
rx_msp_cmd prx;
int err = 0;
int err;
memset(&pcmd, 0, sizeof(pcmd));
memset(&prx, 0, sizeof(prx));
@ -259,8 +267,7 @@ static int do_mtc_state(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
pcmd.cmd_val2 = 1;
mtc_calculate_checksum(&pcmd);
err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
SPI_XFER_BEGIN | SPI_XFER_END);
err = msp430_xfer(&pcmd, &prx);
if (!err) {
printf("State %02Xh\n", prx.state);