* drives the amplifier input.
*/
-
/*
* Initialize beeper-related hardware. Initialize timer 1 for use with
- * the beeper. Use 66 Mhz internal clock with prescale of 33 to get
+ * the beeper. Use 66 MHz internal clock with prescale of 33 to get
* 1 uS period per count.
* FIXME: we should really compute the prescale based on the reported
* core clock frequency.
*/
-void
-init_beeper(void)
+void init_beeper (void)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
immap->im_cpmtimer.cpmt_tgcr &= ~TGCR_RST1 | TGCR_STP1;
immap->im_cpmtimer.cpmt_tmr1 = ((33 << TMR_PS_SHIFT) & TMR_PS_MSK)
- | TMR_OM | TMR_FRR | TMR_ICLK_IN_GEN;
+ | TMR_OM | TMR_FRR | TMR_ICLK_IN_GEN;
immap->im_cpmtimer.cpmt_tcn1 = 0;
immap->im_cpmtimer.cpmt_ter1 = 0xffff;
immap->im_cpmtimer.cpmt_tgcr |= TGCR_RST1;
}
-
/*
* Set beeper frequency. Max allowed frequency is 2.5 KHz. This limit
* is mostly arbitrary, but the beeper isn't really much good beyond this
* frequency.
*/
-void
-set_beeper_frequency(uint frequency)
+void set_beeper_frequency (uint frequency)
{
#define FREQ_LIMIT 2500
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
/*
* Compute timer ticks given desired frequency. The timer is set up
* to count 0.5 uS per tick and it takes two ticks per cycle (Hz).
*/
- if (frequency > FREQ_LIMIT) frequency = FREQ_LIMIT;
- frequency = 1000000/frequency;
- immap->im_cpmtimer.cpmt_trr1 = (ushort)frequency;
+ if (frequency > FREQ_LIMIT)
+ frequency = FREQ_LIMIT;
+ frequency = 1000000 / frequency;
+ immap->im_cpmtimer.cpmt_trr1 = (ushort) frequency;
}
-
/*
* Turn the beeper on
*/
-void
-beeper_on(void)
+void beeper_on (void)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
immap->im_cpmtimer.cpmt_tgcr &= ~TGCR_STP1;
}
-
/*
* Turn the beeper off
*/
-void
-beeper_off(void)
+void beeper_off (void)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
immap->im_cpmtimer.cpmt_tgcr |= TGCR_STP1;
}
-
/*
* Increase or decrease the beeper volume. Volume can be set
* from off to full in 64 steps. To increase volume, the output
* change pin mode to tristate) then output a high to go back to
* tristate.
*/
-void
-set_beeper_volume(int steps)
+void set_beeper_volume (int steps)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
int i;
if (steps >= 0) {
for (i = 0; i < (steps >= 64 ? 64 : steps); i++) {
immap->im_cpm.cp_pbodr &= ~(0x80000000 >> 19);
- udelay(1);
+ udelay (1);
immap->im_cpm.cp_pbodr |= (0x80000000 >> 19);
- udelay(1);
+ udelay (1);
}
- }
- else {
+ } else {
for (i = 0; i > (steps <= -64 ? -64 : steps); i--) {
immap->im_cpm.cp_pbdat &= ~(0x80000000 >> 19);
- udelay(1);
+ udelay (1);
immap->im_cpm.cp_pbdat |= (0x80000000 >> 19);
- udelay(1);
+ udelay (1);
}
}
}
-
/*
* Check the environment to see if the beeper needs beeping.
* Controlled by a sequence of the form:
* freq/delta volume/on time/off time;... where:
- * freq = frequency in Hz (0 - 2500)
+ * freq = frequency in Hz (0 - 2500)
* delta volume = volume steps up or down (-64 <= vol <= 64)
* on time = time in mS
* off time = time in mS
*
* Return 1 on success, 0 on failure
*/
-int
-do_beeper(char *sequence)
+int do_beeper (char *sequence)
{
#define DELIMITER ';'
-int args[4];
-int i;
-int val;
-char *p = sequence;
-char *tp;
+ int args[4];
+ int i;
+ int val;
+ char *p = sequence;
+ char *tp;
/*
* Parse the control sequence. This is a really simple parser
* without any real error checking. You can probably blow it
* up really easily.
*/
- if (*p == '\0' || !isdigit(*p)) {
- printf("%s:%d: null or invalid string (%s)\n",
- __FILE__, __LINE__, p);
+ if (*p == '\0' || !isdigit (*p)) {
+ printf ("%s:%d: null or invalid string (%s)\n",
+ __FILE__, __LINE__, p);
return 0;
}
i = 0;
while (*p != '\0') {
while (*p != DELIMITER) {
- if (i > 3) i = 0;
- val = (int) simple_strtol(p, &tp, 0);
+ if (i > 3)
+ i = 0;
+ val = (int) simple_strtol (p, &tp, 0);
if (tp == p) {
- printf("%s:%d: no digits or bad format\n",
- __FILE__,__LINE__);
+ printf ("%s:%d: no digits or bad format\n",
+ __FILE__, __LINE__);
return 0;
- }
- else {
+ } else {
args[i] = val;
}
*/
#if 0
for (i = 0; i < 4; i++) {
- printf("%s:%d:arg %d = %d\n", __FILE__, __LINE__, i, args[i]);
+ printf ("%s:%d:arg %d = %d\n", __FILE__, __LINE__, i,
+ args[i]);
}
- printf("\n");
+ printf ("\n");
#endif
-
- set_beeper_frequency(args[0]);
- set_beeper_volume(args[1]);
- beeper_on();
- udelay(1000 * args[2]);
- beeper_off();
- udelay(1000 * args[3]);
+ set_beeper_frequency (args[0]);
+ set_beeper_volume (args[1]);
+ beeper_on ();
+ udelay (1000 * args[2]);
+ beeper_off ();
+ udelay (1000 * args[3]);
}
return 1;
}
-
-/* vim: set ts=4 sw=4 tw=78: */
projects / karo-tx-uboot.git / blobdiff