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-rw-r--r--default-configs/arm-softmmu.mak1
-rw-r--r--hw/misc/Makefile.objs1
-rw-r--r--hw/misc/pca9552.c240
-rw-r--r--include/hw/misc/pca9552.h32
-rw-r--r--include/hw/misc/pca9552_regs.h32
-rw-r--r--tests/Makefile.include2
-rw-r--r--tests/libqos/i2c.h2
-rw-r--r--tests/pca9552-test.c116
-rw-r--r--tests/tmp105-test.c2
9 files changed, 426 insertions, 2 deletions
diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index 8ba2558b36..7cf73d2f27 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -16,6 +16,7 @@ CONFIG_TSC2005=y
CONFIG_LM832X=y
CONFIG_TMP105=y
CONFIG_TMP421=y
+CONFIG_PCA9552=y
CONFIG_STELLARIS=y
CONFIG_STELLARIS_INPUT=y
CONFIG_STELLARIS_ENET=y
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs
index 00e834d0f0..ecd8d61098 100644
--- a/hw/misc/Makefile.objs
+++ b/hw/misc/Makefile.objs
@@ -7,6 +7,7 @@ common-obj-$(CONFIG_SGA) += sga.o
common-obj-$(CONFIG_ISA_TESTDEV) += pc-testdev.o
common-obj-$(CONFIG_PCI_TESTDEV) += pci-testdev.o
common-obj-$(CONFIG_EDU) += edu.o
+common-obj-$(CONFIG_PCA9552) += pca9552.o
common-obj-y += unimp.o
common-obj-$(CONFIG_FW_CFG_DMA) += vmcoreinfo.o
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
new file mode 100644
index 0000000000..9775d5274a
--- /dev/null
+++ b/hw/misc/pca9552.c
@@ -0,0 +1,240 @@
+/*
+ * PCA9552 I2C LED blinker
+ *
+ * https://www.nxp.com/docs/en/application-note/AN264.pdf
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "hw/hw.h"
+#include "hw/misc/pca9552.h"
+#include "hw/misc/pca9552_regs.h"
+
+#define PCA9552_LED_ON 0x0
+#define PCA9552_LED_OFF 0x1
+#define PCA9552_LED_PWM0 0x2
+#define PCA9552_LED_PWM1 0x3
+
+static uint8_t pca9552_pin_get_config(PCA9552State *s, int pin)
+{
+ uint8_t reg = PCA9552_LS0 + (pin / 4);
+ uint8_t shift = (pin % 4) << 1;
+
+ return extract32(s->regs[reg], shift, 2);
+}
+
+static void pca9552_update_pin_input(PCA9552State *s)
+{
+ int i;
+
+ for (i = 0; i < s->nr_leds; i++) {
+ uint8_t input_reg = PCA9552_INPUT0 + (i / 8);
+ uint8_t input_shift = (i % 8);
+ uint8_t config = pca9552_pin_get_config(s, i);
+
+ switch (config) {
+ case PCA9552_LED_ON:
+ s->regs[input_reg] |= 1 << input_shift;
+ break;
+ case PCA9552_LED_OFF:
+ s->regs[input_reg] &= ~(1 << input_shift);
+ break;
+ case PCA9552_LED_PWM0:
+ case PCA9552_LED_PWM1:
+ /* TODO */
+ default:
+ break;
+ }
+ }
+}
+
+static uint8_t pca9552_read(PCA9552State *s, uint8_t reg)
+{
+ switch (reg) {
+ case PCA9552_INPUT0:
+ case PCA9552_INPUT1:
+ case PCA9552_PSC0:
+ case PCA9552_PWM0:
+ case PCA9552_PSC1:
+ case PCA9552_PWM1:
+ case PCA9552_LS0:
+ case PCA9552_LS1:
+ case PCA9552_LS2:
+ case PCA9552_LS3:
+ return s->regs[reg];
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: unexpected read to register %d\n",
+ __func__, reg);
+ return 0xFF;
+ }
+}
+
+static void pca9552_write(PCA9552State *s, uint8_t reg, uint8_t data)
+{
+ switch (reg) {
+ case PCA9552_PSC0:
+ case PCA9552_PWM0:
+ case PCA9552_PSC1:
+ case PCA9552_PWM1:
+ s->regs[reg] = data;
+ break;
+
+ case PCA9552_LS0:
+ case PCA9552_LS1:
+ case PCA9552_LS2:
+ case PCA9552_LS3:
+ s->regs[reg] = data;
+ pca9552_update_pin_input(s);
+ break;
+
+ case PCA9552_INPUT0:
+ case PCA9552_INPUT1:
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: unexpected write to register %d\n",
+ __func__, reg);
+ }
+}
+
+/*
+ * When Auto-Increment is on, the register address is incremented
+ * after each byte is sent to or received by the device. The index
+ * rollovers to 0 when the maximum register address is reached.
+ */
+static void pca9552_autoinc(PCA9552State *s)
+{
+ if (s->pointer != 0xFF && s->pointer & PCA9552_AUTOINC) {
+ uint8_t reg = s->pointer & 0xf;
+
+ reg = (reg + 1) % (s->max_reg + 1);
+ s->pointer = reg | PCA9552_AUTOINC;
+ }
+}
+
+static int pca9552_recv(I2CSlave *i2c)
+{
+ PCA9552State *s = PCA9552(i2c);
+ uint8_t ret;
+
+ ret = pca9552_read(s, s->pointer & 0xf);
+
+ /*
+ * From the Specs:
+ *
+ * Important Note: When a Read sequence is initiated and the
+ * AI bit is set to Logic Level 1, the Read Sequence MUST
+ * start by a register different from 0.
+ *
+ * I don't know what should be done in this case, so throw an
+ * error.
+ */
+ if (s->pointer == PCA9552_AUTOINC) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Autoincrement read starting with register 0\n",
+ __func__);
+ }
+
+ pca9552_autoinc(s);
+
+ return ret;
+}
+
+static int pca9552_send(I2CSlave *i2c, uint8_t data)
+{
+ PCA9552State *s = PCA9552(i2c);
+
+ /* First byte sent by is the register address */
+ if (s->len == 0) {
+ s->pointer = data;
+ s->len++;
+ } else {
+ pca9552_write(s, s->pointer & 0xf, data);
+
+ pca9552_autoinc(s);
+ }
+
+ return 0;
+}
+
+static int pca9552_event(I2CSlave *i2c, enum i2c_event event)
+{
+ PCA9552State *s = PCA9552(i2c);
+
+ s->len = 0;
+ return 0;
+}
+
+static const VMStateDescription pca9552_vmstate = {
+ .name = "PCA9552",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(len, PCA9552State),
+ VMSTATE_UINT8(pointer, PCA9552State),
+ VMSTATE_UINT8_ARRAY(regs, PCA9552State, PCA9552_NR_REGS),
+ VMSTATE_I2C_SLAVE(i2c, PCA9552State),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void pca9552_reset(DeviceState *dev)
+{
+ PCA9552State *s = PCA9552(dev);
+
+ s->regs[PCA9552_PSC0] = 0xFF;
+ s->regs[PCA9552_PWM0] = 0x80;
+ s->regs[PCA9552_PSC1] = 0xFF;
+ s->regs[PCA9552_PWM1] = 0x80;
+ s->regs[PCA9552_LS0] = 0x55; /* all OFF */
+ s->regs[PCA9552_LS1] = 0x55;
+ s->regs[PCA9552_LS2] = 0x55;
+ s->regs[PCA9552_LS3] = 0x55;
+
+ pca9552_update_pin_input(s);
+
+ s->pointer = 0xFF;
+ s->len = 0;
+}
+
+static void pca9552_initfn(Object *obj)
+{
+ PCA9552State *s = PCA9552(obj);
+
+ /* If support for the other PCA955X devices are implemented, these
+ * constant values might be part of class structure describing the
+ * PCA955X device
+ */
+ s->max_reg = PCA9552_LS3;
+ s->nr_leds = 16;
+}
+
+static void pca9552_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+ k->event = pca9552_event;
+ k->recv = pca9552_recv;
+ k->send = pca9552_send;
+ dc->reset = pca9552_reset;
+ dc->vmsd = &pca9552_vmstate;
+}
+
+static const TypeInfo pca9552_info = {
+ .name = TYPE_PCA9552,
+ .parent = TYPE_I2C_SLAVE,
+ .instance_init = pca9552_initfn,
+ .instance_size = sizeof(PCA9552State),
+ .class_init = pca9552_class_init,
+};
+
+static void pca9552_register_types(void)
+{
+ type_register_static(&pca9552_info);
+}
+
+type_init(pca9552_register_types)
diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h
new file mode 100644
index 0000000000..ebb43c63fe
--- /dev/null
+++ b/include/hw/misc/pca9552.h
@@ -0,0 +1,32 @@
+/*
+ * PCA9552 I2C LED blinker
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ */
+#ifndef PCA9552_H
+#define PCA9552_H
+
+#include "hw/i2c/i2c.h"
+
+#define TYPE_PCA9552 "pca9552"
+#define PCA9552(obj) OBJECT_CHECK(PCA9552State, (obj), TYPE_PCA9552)
+
+#define PCA9552_NR_REGS 10
+
+typedef struct PCA9552State {
+ /*< private >*/
+ I2CSlave i2c;
+ /*< public >*/
+
+ uint8_t len;
+ uint8_t pointer;
+
+ uint8_t regs[PCA9552_NR_REGS];
+ uint8_t max_reg;
+ uint8_t nr_leds;
+} PCA9552State;
+
+#endif
diff --git a/include/hw/misc/pca9552_regs.h b/include/hw/misc/pca9552_regs.h
new file mode 100644
index 0000000000..d8051cfbd6
--- /dev/null
+++ b/include/hw/misc/pca9552_regs.h
@@ -0,0 +1,32 @@
+/*
+ * PCA9552 I2C LED blinker registers
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ */
+#ifndef PCA9552_REGS_H
+#define PCA9552_REGS_H
+
+/*
+ * Bits [0:3] are used to address a specific register.
+ */
+#define PCA9552_INPUT0 0 /* read only input register 0 */
+#define PCA9552_INPUT1 1 /* read only input register 1 */
+#define PCA9552_PSC0 2 /* read/write frequency prescaler 0 */
+#define PCA9552_PWM0 3 /* read/write PWM register 0 */
+#define PCA9552_PSC1 4 /* read/write frequency prescaler 1 */
+#define PCA9552_PWM1 5 /* read/write PWM register 1 */
+#define PCA9552_LS0 6 /* read/write LED0 to LED3 selector */
+#define PCA9552_LS1 7 /* read/write LED4 to LED7 selector */
+#define PCA9552_LS2 8 /* read/write LED8 to LED11 selector */
+#define PCA9552_LS3 9 /* read/write LED12 to LED15 selector */
+
+/*
+ * Bit [4] is used to activate the Auto-Increment option of the
+ * register address
+ */
+#define PCA9552_AUTOINC (1 << 4)
+
+#endif
diff --git a/tests/Makefile.include b/tests/Makefile.include
index 0eaa835b8a..400d8890e7 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -373,6 +373,7 @@ check-qtest-sparc64-y += tests/prom-env-test$(EXESUF)
check-qtest-sparc64-y += tests/boot-serial-test$(EXESUF)
check-qtest-arm-y = tests/tmp105-test$(EXESUF)
+check-qtest-arm-y += tests/pca9552-test$(EXESUF)
check-qtest-arm-y += tests/ds1338-test$(EXESUF)
check-qtest-arm-y += tests/m25p80-test$(EXESUF)
gcov-files-arm-y += hw/misc/tmp105.c
@@ -778,6 +779,7 @@ tests/bios-tables-test$(EXESUF): tests/bios-tables-test.o \
tests/boot-sector.o tests/acpi-utils.o $(libqos-obj-y)
tests/pxe-test$(EXESUF): tests/pxe-test.o tests/boot-sector.o $(libqos-obj-y)
tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)
+tests/pca9552-test$(EXESUF): tests/pca9552-test.o $(libqos-omap-obj-y)
tests/ds1338-test$(EXESUF): tests/ds1338-test.o $(libqos-imx-obj-y)
tests/m25p80-test$(EXESUF): tests/m25p80-test.o
tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)
diff --git a/tests/libqos/i2c.h b/tests/libqos/i2c.h
index eb40b808bd..cc01358a9f 100644
--- a/tests/libqos/i2c.h
+++ b/tests/libqos/i2c.h
@@ -21,6 +21,8 @@ struct I2CAdapter {
QTestState *qts;
};
+#define OMAP2_I2C_1_BASE 0x48070000
+
void i2c_send(I2CAdapter *i2c, uint8_t addr,
const uint8_t *buf, uint16_t len);
void i2c_recv(I2CAdapter *i2c, uint8_t addr,
diff --git a/tests/pca9552-test.c b/tests/pca9552-test.c
new file mode 100644
index 0000000000..5466a67ed7
--- /dev/null
+++ b/tests/pca9552-test.c
@@ -0,0 +1,116 @@
+/*
+ * QTest testcase for the PCA9552 LED blinker
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+
+#include "libqtest.h"
+#include "libqos/i2c.h"
+#include "hw/misc/pca9552_regs.h"
+
+#define PCA9552_TEST_ID "pca9552-test"
+#define PCA9552_TEST_ADDR 0x60
+
+static I2CAdapter *i2c;
+
+static uint8_t pca9552_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
+{
+ uint8_t resp[1];
+ i2c_send(i2c, addr, &reg, 1);
+ i2c_recv(i2c, addr, resp, 1);
+ return resp[0];
+}
+
+static void pca9552_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
+ uint8_t value)
+{
+ uint8_t cmd[2];
+ uint8_t resp[1];
+
+ cmd[0] = reg;
+ cmd[1] = value;
+ i2c_send(i2c, addr, cmd, 2);
+ i2c_recv(i2c, addr, resp, 1);
+ g_assert_cmphex(resp[0], ==, cmd[1]);
+}
+
+static void receive_autoinc(void)
+{
+ uint8_t resp;
+ uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC;
+
+ i2c_send(i2c, PCA9552_TEST_ADDR, &reg, 1);
+
+ /* PCA9552_LS0 */
+ i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
+ g_assert_cmphex(resp, ==, 0x54);
+
+ /* PCA9552_LS1 */
+ i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
+ g_assert_cmphex(resp, ==, 0x55);
+
+ /* PCA9552_LS2 */
+ i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
+ g_assert_cmphex(resp, ==, 0x55);
+
+ /* PCA9552_LS3 */
+ i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
+ g_assert_cmphex(resp, ==, 0x54);
+}
+
+static void send_and_receive(void)
+{
+ uint8_t value;
+
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0);
+ g_assert_cmphex(value, ==, 0x55);
+
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
+ g_assert_cmphex(value, ==, 0x0);
+
+ /* Switch on LED 0 */
+ pca9552_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0, 0x54);
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0);
+ g_assert_cmphex(value, ==, 0x54);
+
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
+ g_assert_cmphex(value, ==, 0x01);
+
+ /* Switch on LED 12 */
+ pca9552_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3, 0x54);
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3);
+ g_assert_cmphex(value, ==, 0x54);
+
+ value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT1);
+ g_assert_cmphex(value, ==, 0x10);
+}
+
+int main(int argc, char **argv)
+{
+ QTestState *s = NULL;
+ int ret;
+
+ g_test_init(&argc, &argv, NULL);
+
+ s = qtest_start("-machine n800 "
+ "-device pca9552,bus=i2c-bus.0,id=" PCA9552_TEST_ID
+ ",address=0x60");
+ i2c = omap_i2c_create(s, OMAP2_I2C_1_BASE);
+
+ qtest_add_func("/pca9552/tx-rx", send_and_receive);
+ qtest_add_func("/pca9552/rx-autoinc", receive_autoinc);
+
+ ret = g_test_run();
+
+ if (s) {
+ qtest_quit(s);
+ }
+ g_free(i2c);
+
+ return ret;
+}
diff --git a/tests/tmp105-test.c b/tests/tmp105-test.c
index d093cffe1e..34cae7a582 100644
--- a/tests/tmp105-test.c
+++ b/tests/tmp105-test.c
@@ -14,8 +14,6 @@
#include "qapi/qmp/qdict.h"
#include "hw/misc/tmp105_regs.h"
-#define OMAP2_I2C_1_BASE 0x48070000
-
#define TMP105_TEST_ID "tmp105-test"
#define TMP105_TEST_ADDR 0x49
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-26 02:03:19 +0000