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authorSylvain Munaut <tnt@246tNt.com>2011-04-24 19:32:42 +0200
committerSylvain Munaut <tnt@246tNt.com>2011-04-24 19:38:22 +0200
commitd9639bb010d05a96a6cbced94668c5754a4f0de9 (patch)
tree0d300b732e20734abf8aaae2b10aac3db445f080
parent03ce0a402c543abd15d85c2cd82f2727b9daaa0a (diff)
fw/calypso: Add a new driver for the buzzer control
Written-by: Jose Luis Pereira <onaips@gmail.com> Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
-rw-r--r--src/target/firmware/calypso/Makefile2
-rw-r--r--src/target/firmware/calypso/buzzer.c86
-rw-r--r--src/target/firmware/include/calypso/buzzer.h34
3 files changed, 121 insertions, 1 deletions
diff --git a/src/target/firmware/calypso/Makefile b/src/target/firmware/calypso/Makefile
index 8fcad7b..c0620ed 100644
--- a/src/target/firmware/calypso/Makefile
+++ b/src/target/firmware/calypso/Makefile
@@ -1,4 +1,4 @@
LIBRARIES+=calypso
calypso_DIR=calypso
-calypso_SRCS=arm.c clock.c delay.c dma.c dsp.c du.c i2c.c irq.c rtc.c sim.c spi.c tpu.c tsp.c keypad.c misc.c timer.c backlight.c uart.c uwire.c
+calypso_SRCS=arm.c buzzer.c clock.c delay.c dma.c dsp.c du.c i2c.c irq.c rtc.c sim.c spi.c tpu.c tsp.c keypad.c misc.c timer.c backlight.c uart.c uwire.c
diff --git a/src/target/firmware/calypso/buzzer.c b/src/target/firmware/calypso/buzzer.c
new file mode 100644
index 0000000..e76906f
--- /dev/null
+++ b/src/target/firmware/calypso/buzzer.c
@@ -0,0 +1,86 @@
+/* Calypso DBB internal PWT (Pulse Width / T) Buzzer Driver */
+
+/* (C) 2010 by Jose Pereira <onaips@gmail.com>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <stdint.h>
+#include <memory.h>
+
+#define BASE_ADDR_PWL 0xfffe8800
+#define PWT_REG(m) (BASE_ADDR_PWL + (m))
+
+#define ASIC_CONF_REG 0xfffef008
+#define BUZZ_LEVEL_REG 0xfffe480e
+
+enum pwt_reg {
+ FRC_REG = 0,
+ VRC_REG = 1,
+ GCR_REG = 2,
+};
+
+#define ASCONF_PWT_ENA (1 << 5)
+
+void buzzer_mode_pwt(int on)
+{
+ uint16_t reg;
+
+ reg = readw(ASIC_CONF_REG);
+
+ if (on) {
+ /* Enable pwt */
+ writeb(0x01, PWT_REG(GCR_REG));
+ /* Switch pin from LT to PWL */
+ reg |= ASCONF_PWT_ENA;
+ writew(reg, ASIC_CONF_REG);
+ } else {
+ /* Switch pin from PWT to BU */
+ reg |= ~ASCONF_PWT_ENA;
+ writew(reg, ASIC_CONF_REG);
+ /* Disable pwt */
+ writeb(0x00, PWT_REG(GCR_REG));
+ }
+}
+
+void buzzer_volume(uint8_t level)
+{
+
+ if (readw(ASIC_CONF_REG) & ASCONF_PWT_ENA) {
+
+ if (level) {
+ //scaling the volume as pwt only knows 0..63
+ level = level >> 1;
+ //if level > 0 buzzer is on
+ level |= 0x01;
+ }
+
+ writeb(level,PWT_REG(VRC_REG));
+
+ } else {
+ /* we need to scale the buzz level, as the
+ * ARMIO buzz controller only knows 0..63 */
+ writeb(level>>2, BUZZ_LEVEL_REG);
+ }
+}
+
+void buzzer_note(uint8_t note)
+{
+ if ( (readw(ASIC_CONF_REG) & ASCONF_PWT_ENA) )
+ writeb(note,PWT_REG(FRC_REG));
+}
diff --git a/src/target/firmware/include/calypso/buzzer.h b/src/target/firmware/include/calypso/buzzer.h
new file mode 100644
index 0000000..dcfd3a3
--- /dev/null
+++ b/src/target/firmware/include/calypso/buzzer.h
@@ -0,0 +1,34 @@
+#ifndef _CAL_BUZZER_H
+#define _CAL_BUZZER_H
+
+#define NOTE(n,oct) (n<<2 | (oct & 0x03))
+
+#define NOTE_E 0x00
+#define NOTE_DIS 0x01
+#define NOTE_D 0x02
+#define NOTE_CIS 0x03
+#define NOTE_C 0x04
+#define NOTE_H 0x05
+#define NOTE_AIS 0x06
+#define NOTE_A 0x07
+#define NOTE_GIS 0x08
+#define NOTE_G 0x09
+#define NOTE_FIS 0x0A
+#define NOTE_F 0x0B
+
+#define OCTAVE_5 OCTAVE(0x00)
+#define OCTAVE_4 OCTAVE(0x01)
+#define OCTAVE_3 OCTAVE(0x02)
+#define OCTAVE_2 OCTAVE(0x03)
+#define OCTAVE_1 OCTAVE(0x04)
+
+#define OCTAVE(m) (m>NOTE_C?m+1:m)
+
+/* Switch buzzer to PWT mode (or back) */
+void buzzer_mode_pwt(int on);
+/* Set the buzzer level */
+void buzzer_volume(uint8_t level);
+/* Set the buzzer note */
+void buzzer_note(uint8_t note);
+
+#endif /* _CAL_BUZZER_H */