From c1b29826279b7405990ccb521d1fb5a24db2e58e Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Sat, 21 Mar 2020 17:49:01 +0100 Subject: hw/misc/led: Add a LED device Add a LED device which can be connected to a GPIO output. They can also be dimmed with PWM devices. For now we do not implement the dimmed mode, but in preparation of a future implementation, we start using the LED intensity. LEDs are limited to a fixed set of colors. Reviewed-by: Luc Michel Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20200912134041.946260-2-f4bug@amsat.org> --- MAINTAINERS | 6 +++ hw/misc/Kconfig | 3 ++ hw/misc/led.c | 142 ++++++++++++++++++++++++++++++++++++++++++++++++++ hw/misc/meson.build | 1 + hw/misc/trace-events | 3 ++ include/hw/misc/led.h | 87 +++++++++++++++++++++++++++++++ 6 files changed, 242 insertions(+) create mode 100644 hw/misc/led.c create mode 100644 include/hw/misc/led.h diff --git a/MAINTAINERS b/MAINTAINERS index ef6f5c7399..7e442b5247 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1967,6 +1967,12 @@ F: docs/specs/vmgenid.txt F: tests/qtest/vmgenid-test.c F: stubs/vmgenid.c +LED +M: Philippe Mathieu-Daudé +S: Maintained +F: include/hw/misc/led.h +F: hw/misc/led.c + Unimplemented device M: Peter Maydell R: Philippe Mathieu-Daudé diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig index 3185456110..e4d059591a 100644 --- a/hw/misc/Kconfig +++ b/hw/misc/Kconfig @@ -126,6 +126,9 @@ config AUX config UNIMP bool +config LED + bool + config MAC_VIA bool select MOS6522 diff --git a/hw/misc/led.c b/hw/misc/led.c new file mode 100644 index 0000000000..1e2f49c571 --- /dev/null +++ b/hw/misc/led.c @@ -0,0 +1,142 @@ +/* + * QEMU single LED device + * + * Copyright (C) 2020 Philippe Mathieu-Daudé + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "migration/vmstate.h" +#include "hw/qdev-properties.h" +#include "hw/misc/led.h" +#include "trace.h" + +#define LED_INTENSITY_PERCENT_MAX 100 + +static const char * const led_color_name[] = { + [LED_COLOR_VIOLET] = "violet", + [LED_COLOR_BLUE] = "blue", + [LED_COLOR_CYAN] = "cyan", + [LED_COLOR_GREEN] = "green", + [LED_COLOR_AMBER] = "amber", + [LED_COLOR_ORANGE] = "orange", + [LED_COLOR_RED] = "red", +}; + +static bool led_color_name_is_valid(const char *color_name) +{ + for (size_t i = 0; i < ARRAY_SIZE(led_color_name); i++) { + if (strcmp(color_name, led_color_name[i]) == 0) { + return true; + } + } + return false; +} + +void led_set_intensity(LEDState *s, unsigned intensity_percent) +{ + if (intensity_percent > LED_INTENSITY_PERCENT_MAX) { + intensity_percent = LED_INTENSITY_PERCENT_MAX; + } + trace_led_set_intensity(s->description, s->color, intensity_percent); + s->intensity_percent = intensity_percent; +} + +unsigned led_get_intensity(LEDState *s) +{ + return s->intensity_percent; +} + +void led_set_state(LEDState *s, bool is_emitting) +{ + led_set_intensity(s, is_emitting ? LED_INTENSITY_PERCENT_MAX : 0); +} + +static void led_reset(DeviceState *dev) +{ + LEDState *s = LED(dev); + + led_set_state(s, false); +} + +static const VMStateDescription vmstate_led = { + .name = TYPE_LED, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT8(intensity_percent, LEDState), + VMSTATE_END_OF_LIST() + } +}; + +static void led_realize(DeviceState *dev, Error **errp) +{ + LEDState *s = LED(dev); + + if (s->color == NULL) { + error_setg(errp, "property 'color' not specified"); + return; + } else if (!led_color_name_is_valid(s->color)) { + error_setg(errp, "property 'color' invalid or not supported"); + return; + } + if (s->description == NULL) { + s->description = g_strdup("n/a"); + } +} + +static Property led_properties[] = { + DEFINE_PROP_STRING("color", LEDState, color), + DEFINE_PROP_STRING("description", LEDState, description), + DEFINE_PROP_END_OF_LIST(), +}; + +static void led_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "LED"; + dc->vmsd = &vmstate_led; + dc->reset = led_reset; + dc->realize = led_realize; + set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); + device_class_set_props(dc, led_properties); +} + +static const TypeInfo led_info = { + .name = TYPE_LED, + .parent = TYPE_DEVICE, + .instance_size = sizeof(LEDState), + .class_init = led_class_init +}; + +static void led_register_types(void) +{ + type_register_static(&led_info); +} + +type_init(led_register_types) + +LEDState *led_create_simple(Object *parentobj, + LEDColor color, + const char *description) +{ + g_autofree char *name = NULL; + DeviceState *dev; + + dev = qdev_new(TYPE_LED); + qdev_prop_set_string(dev, "color", led_color_name[color]); + if (!description) { + static unsigned undescribed_led_id; + name = g_strdup_printf("undescribed-led-#%u", undescribed_led_id++); + } else { + qdev_prop_set_string(dev, "description", description); + name = g_ascii_strdown(description, -1); + name = g_strdelimit(name, " #", '-'); + } + object_property_add_child(parentobj, name, OBJECT(dev)); + qdev_realize_and_unref(dev, NULL, &error_fatal); + + return LED(dev); +} diff --git a/hw/misc/meson.build b/hw/misc/meson.build index 793d45b1dc..aa8ec3bca9 100644 --- a/hw/misc/meson.build +++ b/hw/misc/meson.build @@ -11,6 +11,7 @@ softmmu_ss.add(when: 'CONFIG_TMP105', if_true: files('tmp105.c')) softmmu_ss.add(when: 'CONFIG_TMP421', if_true: files('tmp421.c')) softmmu_ss.add(when: 'CONFIG_UNIMP', if_true: files('unimp.c')) softmmu_ss.add(when: 'CONFIG_EMPTY_SLOT', if_true: files('empty_slot.c')) +softmmu_ss.add(when: 'CONFIG_LED', if_true: files('led.c')) # ARM devices softmmu_ss.add(when: 'CONFIG_PL310', if_true: files('arm_l2x0.c')) diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 6054f9adf3..2b6310dbe4 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -223,6 +223,9 @@ via1_adb_poll(uint8_t data, const char *vadbint, int status, int index, int size grlib_ahb_pnp_read(uint64_t addr, uint32_t value) "AHB PnP read addr:0x%03"PRIx64" data:0x%08x" grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP read addr:0x%03"PRIx64" data:0x%08x" +# led.c +led_set_intensity(const char *color, const char *desc, uint8_t intensity_percent) "LED desc:'%s' color:%s intensity: %u%%" + # pca9552.c pca955x_gpio_status(const char *description, const char *buf) "%s GPIOs 0-15 [%s]" pca955x_gpio_change(const char *description, unsigned id, unsigned prev_state, unsigned current_state) "%s GPIO id:%u status: %u -> %u" diff --git a/include/hw/misc/led.h b/include/hw/misc/led.h new file mode 100644 index 0000000000..286d37c75c --- /dev/null +++ b/include/hw/misc/led.h @@ -0,0 +1,87 @@ +/* + * QEMU single LED device + * + * Copyright (C) 2020 Philippe Mathieu-Daudé + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#ifndef HW_MISC_LED_H +#define HW_MISC_LED_H + +#include "qom/object.h" + +#define TYPE_LED "led" + +/** + * LEDColor: Color of a LED + * + * This set is restricted to physically available LED colors. + * + * LED colors from 'Table 1. Product performance of LUXEON Rebel Color + * Line' of the 'DS68 LUXEON Rebel Color Line' datasheet available at: + * https://www.lumileds.com/products/color-leds/luxeon-rebel-color/ + */ +typedef enum { /* Coarse wavelength range */ + LED_COLOR_VIOLET, /* 425 nm */ + LED_COLOR_BLUE, /* 475 nm */ + LED_COLOR_CYAN, /* 500 nm */ + LED_COLOR_GREEN, /* 535 nm */ + LED_COLOR_AMBER, /* 590 nm */ + LED_COLOR_ORANGE, /* 615 nm */ + LED_COLOR_RED, /* 630 nm */ +} LEDColor; + +struct LEDState { + /* Private */ + DeviceState parent_obj; + /* Public */ + + uint8_t intensity_percent; + + /* Properties */ + char *description; + char *color; +}; +typedef struct LEDState LEDState; +DECLARE_INSTANCE_CHECKER(LEDState, LED, TYPE_LED) + +/** + * led_set_intensity: Set the intensity of a LED device + * @s: the LED object + * @intensity_percent: intensity as percentage in range 0 to 100. + */ +void led_set_intensity(LEDState *s, unsigned intensity_percent); + +/** + * led_get_intensity: + * @s: the LED object + * + * Returns: The LED intensity as percentage in range 0 to 100. + */ +unsigned led_get_intensity(LEDState *s); + +/** + * led_set_state: Set the state of a LED device + * @s: the LED object + * @is_emitting: boolean indicating whether the LED is emitting + * + * This utility is meant for LED connected to GPIO. + */ +void led_set_state(LEDState *s, bool is_emitting); + +/** + * led_create_simple: Create and realize a LED device + * @parentobj: the parent object + * @color: color of the LED + * @description: description of the LED (optional) + * + * Create the device state structure, initialize it, and + * drop the reference to it (the device is realized). + * + * Returns: The newly allocated and instantiated LED object. + */ +LEDState *led_create_simple(Object *parentobj, + LEDColor color, + const char *description); + +#endif /* HW_MISC_LED_H */ -- cgit v1.2.3-55-g7522 From ddb67f6402b8096f70ca68e3cffaddfd588b384d Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Tue, 16 Jun 2020 06:23:50 +0200 Subject: hw/misc/led: Allow connecting from GPIO output Some devices expose GPIO lines. Add a GPIO qdev input to our LED device, so we can connect a GPIO output using qdev_connect_gpio_out(). When used with GPIOs, the intensity can only be either minium or maximum. This depends of the polarity of the GPIO (which can be inverted). Declare the GpioPolarity type to model the polarity. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Reviewed-by: Luc Michel Message-Id: <20200912134041.946260-3-f4bug@amsat.org> --- hw/misc/led.c | 17 ++++++++++++++++- include/hw/misc/led.h | 10 ++++++++++ include/hw/qdev-core.h | 16 ++++++++++++++++ 3 files changed, 42 insertions(+), 1 deletion(-) diff --git a/hw/misc/led.c b/hw/misc/led.c index 1e2f49c571..c5fa09a613 100644 --- a/hw/misc/led.c +++ b/hw/misc/led.c @@ -10,6 +10,7 @@ #include "migration/vmstate.h" #include "hw/qdev-properties.h" #include "hw/misc/led.h" +#include "hw/irq.h" #include "trace.h" #define LED_INTENSITY_PERCENT_MAX 100 @@ -53,11 +54,19 @@ void led_set_state(LEDState *s, bool is_emitting) led_set_intensity(s, is_emitting ? LED_INTENSITY_PERCENT_MAX : 0); } +static void led_set_state_gpio_handler(void *opaque, int line, int new_state) +{ + LEDState *s = LED(opaque); + + assert(line == 0); + led_set_state(s, !!new_state != s->gpio_active_high); +} + static void led_reset(DeviceState *dev) { LEDState *s = LED(dev); - led_set_state(s, false); + led_set_state(s, s->gpio_active_high); } static const VMStateDescription vmstate_led = { @@ -84,11 +93,14 @@ static void led_realize(DeviceState *dev, Error **errp) if (s->description == NULL) { s->description = g_strdup("n/a"); } + + qdev_init_gpio_in(DEVICE(s), led_set_state_gpio_handler, 1); } static Property led_properties[] = { DEFINE_PROP_STRING("color", LEDState, color), DEFINE_PROP_STRING("description", LEDState, description), + DEFINE_PROP_BOOL("gpio-active-high", LEDState, gpio_active_high, true), DEFINE_PROP_END_OF_LIST(), }; @@ -119,6 +131,7 @@ static void led_register_types(void) type_init(led_register_types) LEDState *led_create_simple(Object *parentobj, + GpioPolarity gpio_polarity, LEDColor color, const char *description) { @@ -126,6 +139,8 @@ LEDState *led_create_simple(Object *parentobj, DeviceState *dev; dev = qdev_new(TYPE_LED); + qdev_prop_set_bit(dev, "gpio-active-high", + gpio_polarity == GPIO_POLARITY_ACTIVE_HIGH); qdev_prop_set_string(dev, "color", led_color_name[color]); if (!description) { static unsigned undescribed_led_id; diff --git a/include/hw/misc/led.h b/include/hw/misc/led.h index 286d37c75c..aa359b87c2 100644 --- a/include/hw/misc/led.h +++ b/include/hw/misc/led.h @@ -9,6 +9,7 @@ #define HW_MISC_LED_H #include "qom/object.h" +#include "hw/qdev-core.h" #define TYPE_LED "led" @@ -37,10 +38,17 @@ struct LEDState { /* Public */ uint8_t intensity_percent; + qemu_irq irq; /* Properties */ char *description; char *color; + /* + * Determines whether a GPIO is using a positive (active-high) + * logic (when used with GPIO, the intensity at reset is related + * to the GPIO polarity). + */ + bool gpio_active_high; }; typedef struct LEDState LEDState; DECLARE_INSTANCE_CHECKER(LEDState, LED, TYPE_LED) @@ -72,6 +80,7 @@ void led_set_state(LEDState *s, bool is_emitting); /** * led_create_simple: Create and realize a LED device * @parentobj: the parent object + * @gpio_polarity: GPIO polarity * @color: color of the LED * @description: description of the LED (optional) * @@ -81,6 +90,7 @@ void led_set_state(LEDState *s, bool is_emitting); * Returns: The newly allocated and instantiated LED object. */ LEDState *led_create_simple(Object *parentobj, + GpioPolarity gpio_polarity, LEDColor color, const char *description); diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 868973319e..a653295d6f 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -443,6 +443,22 @@ void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev, void qdev_machine_creation_done(void); bool qdev_machine_modified(void); +/** + * GpioPolarity: Polarity of a GPIO line + * + * GPIO lines use either positive (active-high) logic, + * or negative (active-low) logic. + * + * In active-high logic (%GPIO_POLARITY_ACTIVE_HIGH), a pin is + * active when the voltage on the pin is high (relative to ground); + * whereas in active-low logic (%GPIO_POLARITY_ACTIVE_LOW), a pin + * is active when the voltage on the pin is low (or grounded). + */ +typedef enum { + GPIO_POLARITY_ACTIVE_LOW, + GPIO_POLARITY_ACTIVE_HIGH +} GpioPolarity; + /** * qdev_get_gpio_in: Get one of a device's anonymous input GPIO lines * @dev: Device whose GPIO we want -- cgit v1.2.3-55-g7522 From 4aef43991afa70c3cb314881fd4bf0f3e1f8b41b Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Sat, 20 Jun 2020 18:47:17 +0200 Subject: hw/misc/led: Emit a trace event when LED intensity has changed Track the LED intensity, and emit a trace event when it changes. Reviewed-by: Richard Henderson Reviewed-by: Luc Michel Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20200912134041.946260-4-f4bug@amsat.org> --- hw/misc/led.c | 4 ++++ hw/misc/trace-events | 1 + 2 files changed, 5 insertions(+) diff --git a/hw/misc/led.c b/hw/misc/led.c index c5fa09a613..5266d026d0 100644 --- a/hw/misc/led.c +++ b/hw/misc/led.c @@ -41,6 +41,10 @@ void led_set_intensity(LEDState *s, unsigned intensity_percent) intensity_percent = LED_INTENSITY_PERCENT_MAX; } trace_led_set_intensity(s->description, s->color, intensity_percent); + if (intensity_percent != s->intensity_percent) { + trace_led_change_intensity(s->description, s->color, + s->intensity_percent, intensity_percent); + } s->intensity_percent = intensity_percent; } diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 2b6310dbe4..6bf7ce863f 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -225,6 +225,7 @@ grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP read addr:0x%03"PRIx6 # led.c led_set_intensity(const char *color, const char *desc, uint8_t intensity_percent) "LED desc:'%s' color:%s intensity: %u%%" +led_change_intensity(const char *color, const char *desc, uint8_t old_intensity_percent, uint8_t new_intensity_percent) "LED desc:'%s' color:%s intensity %u%% -> %u%%" # pca9552.c pca955x_gpio_status(const char *description, const char *buf) "%s GPIOs 0-15 [%s]" -- cgit v1.2.3-55-g7522 From 7cfbde5ea1cfeaf0834f4f43dc79eb24cdd52e1b Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Sat, 20 Jun 2020 18:54:41 +0200 Subject: hw/arm/aspeed: Add the 3 front LEDs drived by the PCA9552 #1 The Witherspoon has 3 LEDs connected to a PCA9552. Add them. The names and reset values are taken from: https://github.com/open-power/witherspoon-xml/blob/master/witherspoon.xml Example booting obmc-phosphor-image: $ qemu-system-arm -M witherspoon-bmc -trace led_change_intensity 1592693373.997015:led_change_intensity LED desc:'front-fault-4' color:green intensity 0% -> 100% 1592693373.997632:led_change_intensity LED desc:'front-power-3' color:green intensity 0% -> 100% 1592693373.998239:led_change_intensity LED desc:'front-id-5' color:green intensity 0% -> 100% 1592693500.291805:led_change_intensity LED desc:'front-power-3' color:green intensity 100% -> 0% 1592693500.312041:led_change_intensity LED desc:'front-power-3' color:green intensity 0% -> 100% 1592693500.821254:led_change_intensity LED desc:'front-power-3' color:green intensity 100% -> 0% 1592693501.331517:led_change_intensity LED desc:'front-power-3' color:green intensity 0% -> 100% 1592693501.841367:led_change_intensity LED desc:'front-power-3' color:green intensity 100% -> 0% 1592693502.350839:led_change_intensity LED desc:'front-power-3' color:green intensity 0% -> 100% 1592693502.861134:led_change_intensity LED desc:'front-power-3' color:green intensity 100% -> 0% 1592693503.371090:led_change_intensity LED desc:'front-power-3' color:green intensity 0% -> 100% We notice the front-power LED starts to blink at a ~2Hz rate. Reviewed-by: Richard Henderson Reviewed-by: Luc Michel Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Cédric Le Goater Message-Id: <20200912134041.946260-5-f4bug@amsat.org> --- hw/arm/Kconfig | 1 + hw/arm/aspeed.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 7d040827af..70e275cafd 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -404,6 +404,7 @@ config ASPEED_SOC select TMP105 select TMP421 select UNIMP + select LED config MPS2 bool diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index bdb981d2f8..0ef3f6b412 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -20,6 +20,7 @@ #include "hw/i2c/smbus_eeprom.h" #include "hw/misc/pca9552.h" #include "hw/misc/tmp105.h" +#include "hw/misc/led.h" #include "hw/qdev-properties.h" #include "qemu/log.h" #include "sysemu/block-backend.h" @@ -525,9 +526,20 @@ static void sonorapass_bmc_i2c_init(AspeedMachineState *bmc) static void witherspoon_bmc_i2c_init(AspeedMachineState *bmc) { + static const struct { + unsigned gpio_id; + LEDColor color; + const char *description; + bool gpio_polarity; + } pca1_leds[] = { + {13, LED_COLOR_GREEN, "front-fault-4", GPIO_POLARITY_ACTIVE_LOW}, + {14, LED_COLOR_GREEN, "front-power-3", GPIO_POLARITY_ACTIVE_LOW}, + {15, LED_COLOR_GREEN, "front-id-5", GPIO_POLARITY_ACTIVE_LOW}, + }; AspeedSoCState *soc = &bmc->soc; uint8_t *eeprom_buf = g_malloc0(8 * 1024); DeviceState *dev; + LEDState *led; /* Bus 3: TODO bmp280@77 */ /* Bus 3: TODO max31785@52 */ @@ -538,6 +550,14 @@ static void witherspoon_bmc_i2c_init(AspeedMachineState *bmc) aspeed_i2c_get_bus(&soc->i2c, 3), &error_fatal); + for (size_t i = 0; i < ARRAY_SIZE(pca1_leds); i++) { + led = led_create_simple(OBJECT(bmc), + pca1_leds[i].gpio_polarity, + pca1_leds[i].color, + pca1_leds[i].description); + qdev_connect_gpio_out(dev, pca1_leds[i].gpio_id, + qdev_get_gpio_in(DEVICE(led), 0)); + } i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 4), "tmp423", 0x4c); i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 5), "tmp423", 0x4c); -- cgit v1.2.3-55-g7522 From 65ad1da23e9096418223f7a856992bd491dc7ec3 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Mon, 15 Jun 2020 21:17:19 +0200 Subject: hw/misc/mps2-fpgaio: Use the LED device Per the 'ARM MPS2 and MPS2+ FPGA Prototyping Boards Technical Reference Manual' (100112_0200_07_en): 2.1 Overview of the MPS2 and MPS2+ hardware The MPS2 and MPS2+ FPGA Prototyping Boards contain the following components and interfaces: * User switches and user LEDs: - Two green LEDs and two push buttons that connect to the FPGA. - Eight green LEDs and one 8-way dip switch that connect to the MCC. Add the 2 LEDs connected to the FPGA. This replaces the 'mps2_fpgaio_leds' trace events by the generic 'led_set_intensity' event. Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Luc Michel Message-Id: <20200912134041.946260-6-f4bug@amsat.org> --- hw/misc/Kconfig | 1 + hw/misc/mps2-fpgaio.c | 23 ++++++++++++++++++----- hw/misc/trace-events | 1 - include/hw/misc/mps2-fpgaio.h | 2 ++ 4 files changed, 21 insertions(+), 6 deletions(-) diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig index e4d059591a..7e9a8a443a 100644 --- a/hw/misc/Kconfig +++ b/hw/misc/Kconfig @@ -93,6 +93,7 @@ config MIPS_ITU config MPS2_FPGAIO bool + select LED config MPS2_SCC bool diff --git a/hw/misc/mps2-fpgaio.c b/hw/misc/mps2-fpgaio.c index 2f3fbeef34..6af0e8f837 100644 --- a/hw/misc/mps2-fpgaio.c +++ b/hw/misc/mps2-fpgaio.c @@ -24,6 +24,7 @@ #include "migration/vmstate.h" #include "hw/registerfields.h" #include "hw/misc/mps2-fpgaio.h" +#include "hw/misc/led.h" #include "hw/qdev-properties.h" #include "qemu/timer.h" @@ -176,12 +177,9 @@ static void mps2_fpgaio_write(void *opaque, hwaddr offset, uint64_t value, switch (offset) { case A_LED0: - /* LED bits [1:0] control board LEDs. We don't currently have - * a mechanism for displaying this graphically, so use a trace event. - */ - trace_mps2_fpgaio_leds(value & 0x02 ? '*' : '.', - value & 0x01 ? '*' : '.'); s->led0 = value & 0x3; + led_set_state(s->led[0], value & 0x01); + led_set_state(s->led[1], value & 0x02); break; case A_PRESCALE: resync_counter(s); @@ -239,6 +237,10 @@ static void mps2_fpgaio_reset(DeviceState *dev) s->counter = 0; s->pscntr = 0; s->pscntr_sync_ticks = now; + + for (size_t i = 0; i < ARRAY_SIZE(s->led); i++) { + device_cold_reset(DEVICE(s->led[i])); + } } static void mps2_fpgaio_init(Object *obj) @@ -251,6 +253,16 @@ static void mps2_fpgaio_init(Object *obj) sysbus_init_mmio(sbd, &s->iomem); } +static void mps2_fpgaio_realize(DeviceState *dev, Error **errp) +{ + MPS2FPGAIO *s = MPS2_FPGAIO(dev); + + s->led[0] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_GREEN, "USERLED0"); + s->led[1] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_GREEN, "USERLED1"); +} + static bool mps2_fpgaio_counters_needed(void *opaque) { /* Currently vmstate.c insists all subsections have a 'needed' function */ @@ -299,6 +311,7 @@ static void mps2_fpgaio_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); dc->vmsd = &mps2_fpgaio_vmstate; + dc->realize = mps2_fpgaio_realize; dc->reset = mps2_fpgaio_reset; device_class_set_props(dc, mps2_fpgaio_properties); } diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 6bf7ce863f..52e637bf4c 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -92,7 +92,6 @@ mps2_scc_cfg_read(unsigned function, unsigned device, uint32_t value) "MPS2 SCC mps2_fpgaio_read(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" mps2_fpgaio_write(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" mps2_fpgaio_reset(void) "MPS2 FPGAIO: reset" -mps2_fpgaio_leds(char led1, char led0) "MPS2 FPGAIO LEDs: %c%c" # msf2-sysreg.c msf2_sysreg_write(uint64_t offset, uint32_t val, uint32_t prev) "msf2-sysreg write: addr 0x%08" PRIx64 " data 0x%" PRIx32 " prev 0x%" PRIx32 diff --git a/include/hw/misc/mps2-fpgaio.h b/include/hw/misc/mps2-fpgaio.h index 80f9227aa6..a010fdb2b6 100644 --- a/include/hw/misc/mps2-fpgaio.h +++ b/include/hw/misc/mps2-fpgaio.h @@ -22,6 +22,7 @@ #define MPS2_FPGAIO_H #include "hw/sysbus.h" +#include "hw/misc/led.h" #include "qom/object.h" #define TYPE_MPS2_FPGAIO "mps2-fpgaio" @@ -33,6 +34,7 @@ struct MPS2FPGAIO { /*< public >*/ MemoryRegion iomem; + LEDState *led[2]; uint32_t led0; uint32_t prescale; -- cgit v1.2.3-55-g7522 From 435db7ebf54cbae68e45ad0bbf4ff6e9019557aa Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Mon, 15 Jun 2020 21:23:59 +0200 Subject: hw/misc/mps2-scc: Use the LED device Per the 'ARM MPS2 and MPS2+ FPGA Prototyping Boards Technical Reference Manual' (100112_0200_07_en): 2.1 Overview of the MPS2 and MPS2+ hardware The MPS2 and MPS2+ FPGA Prototyping Boards contain the following components and interfaces: * User switches and user LEDs: - Two green LEDs and two push buttons that connect to the FPGA. - Eight green LEDs and one 8-way dip switch that connect to the MCC. Add the 8 LEDs connected to the MCC. This replaces the 'mps2_scc_leds' trace events by the generic 'led_set_intensity' event. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Reviewed-by: Luc Michel Message-Id: <20200912134041.946260-7-f4bug@amsat.org> --- hw/misc/Kconfig | 1 + hw/misc/mps2-scc.c | 27 ++++++++++++++++----------- hw/misc/trace-events | 1 - include/hw/misc/mps2-scc.h | 2 ++ 4 files changed, 19 insertions(+), 12 deletions(-) diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig index 7e9a8a443a..877ecff447 100644 --- a/hw/misc/Kconfig +++ b/hw/misc/Kconfig @@ -97,6 +97,7 @@ config MPS2_FPGAIO config MPS2_SCC bool + select LED config TZ_MPC bool diff --git a/hw/misc/mps2-scc.c b/hw/misc/mps2-scc.c index 9d0909e7b3..ce1dfe9356 100644 --- a/hw/misc/mps2-scc.c +++ b/hw/misc/mps2-scc.c @@ -20,11 +20,13 @@ #include "qemu/osdep.h" #include "qemu/log.h" #include "qemu/module.h" +#include "qemu/bitops.h" #include "trace.h" #include "hw/sysbus.h" #include "migration/vmstate.h" #include "hw/registerfields.h" #include "hw/misc/mps2-scc.h" +#include "hw/misc/led.h" #include "hw/qdev-properties.h" REG32(CFG0, 0) @@ -152,18 +154,10 @@ static void mps2_scc_write(void *opaque, hwaddr offset, uint64_t value, s->cfg0 = value; break; case A_CFG1: - /* CFG1 bits [7:0] control the board LEDs. We don't currently have - * a mechanism for displaying this graphically, so use a trace event. - */ - trace_mps2_scc_leds(value & 0x80 ? '*' : '.', - value & 0x40 ? '*' : '.', - value & 0x20 ? '*' : '.', - value & 0x10 ? '*' : '.', - value & 0x08 ? '*' : '.', - value & 0x04 ? '*' : '.', - value & 0x02 ? '*' : '.', - value & 0x01 ? '*' : '.'); s->cfg1 = value; + for (size_t i = 0; i < ARRAY_SIZE(s->led); i++) { + led_set_state(s->led[i], extract32(value, i, 1)); + } break; case A_CFGDATA_OUT: s->cfgdata_out = value; @@ -236,6 +230,9 @@ static void mps2_scc_reset(DeviceState *dev) for (i = 0; i < NUM_OSCCLK; i++) { s->oscclk[i] = s->oscclk_reset[i]; } + for (i = 0; i < ARRAY_SIZE(s->led); i++) { + device_cold_reset(DEVICE(s->led[i])); + } } static void mps2_scc_init(Object *obj) @@ -249,6 +246,14 @@ static void mps2_scc_init(Object *obj) static void mps2_scc_realize(DeviceState *dev, Error **errp) { + MPS2SCC *s = MPS2_SCC(dev); + + for (size_t i = 0; i < ARRAY_SIZE(s->led); i++) { + char *name = g_strdup_printf("SCC LED%zu", i); + s->led[i] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_GREEN, name); + g_free(name); + } } static const VMStateDescription mps2_scc_vmstate = { diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 52e637bf4c..c68811b670 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -84,7 +84,6 @@ aspeed_scu_write(uint64_t offset, unsigned size, uint32_t data) "To 0x%" PRIx64 mps2_scc_read(uint64_t offset, uint64_t data, unsigned size) "MPS2 SCC read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" mps2_scc_write(uint64_t offset, uint64_t data, unsigned size) "MPS2 SCC write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u" mps2_scc_reset(void) "MPS2 SCC: reset" -mps2_scc_leds(char led7, char led6, char led5, char led4, char led3, char led2, char led1, char led0) "MPS2 SCC LEDs: %c%c%c%c%c%c%c%c" mps2_scc_cfg_write(unsigned function, unsigned device, uint32_t value) "MPS2 SCC config write: function %d device %d data 0x%" PRIx32 mps2_scc_cfg_read(unsigned function, unsigned device, uint32_t value) "MPS2 SCC config read: function %d device %d data 0x%" PRIx32 diff --git a/include/hw/misc/mps2-scc.h b/include/hw/misc/mps2-scc.h index e922b3c8e0..f65d873203 100644 --- a/include/hw/misc/mps2-scc.h +++ b/include/hw/misc/mps2-scc.h @@ -13,6 +13,7 @@ #define MPS2_SCC_H #include "hw/sysbus.h" +#include "hw/misc/led.h" #include "qom/object.h" #define TYPE_MPS2_SCC "mps2-scc" @@ -26,6 +27,7 @@ struct MPS2SCC { /*< public >*/ MemoryRegion iomem; + LEDState *led[8]; uint32_t cfg0; uint32_t cfg1; -- cgit v1.2.3-55-g7522 From 06972067c48fc21a47445b5d706368f1129f216f Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Tue, 9 Jun 2020 13:53:07 +0200 Subject: hw/arm/tosa: Replace fprintf() calls by LED devices The recently added LED device reports LED status changes with the 'led_set_intensity' trace event. It is less invasive than the fprintf() calls. We need however to have a binary built with tracing support. Reviewed-by: Luc Michel Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20200912134041.946260-8-f4bug@amsat.org> --- hw/arm/Kconfig | 1 + hw/arm/tosa.c | 40 +++++++++++++++------------------------- 2 files changed, 16 insertions(+), 25 deletions(-) diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 70e275cafd..3c893e07cd 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -151,6 +151,7 @@ config TOSA select ZAURUS # scoop select MICRODRIVE select PXA2XX + select LED config SPITZ bool diff --git a/hw/arm/tosa.c b/hw/arm/tosa.c index c196f0d2f8..fe88ed89fe 100644 --- a/hw/arm/tosa.c +++ b/hw/arm/tosa.c @@ -24,6 +24,7 @@ #include "hw/irq.h" #include "hw/ssi/ssi.h" #include "hw/sysbus.h" +#include "hw/misc/led.h" #include "exec/address-spaces.h" #include "qom/object.h" @@ -81,26 +82,6 @@ struct TosaMiscGPIOState { SysBusDevice parent_obj; }; -static void tosa_gpio_leds(void *opaque, int line, int level) -{ - switch (line) { - case 0: - fprintf(stderr, "blue LED %s.\n", level ? "on" : "off"); - break; - case 1: - fprintf(stderr, "green LED %s.\n", level ? "on" : "off"); - break; - case 2: - fprintf(stderr, "amber LED %s.\n", level ? "on" : "off"); - break; - case 3: - fprintf(stderr, "wlan LED %s.\n", level ? "on" : "off"); - break; - default: - g_assert_not_reached(); - } -} - static void tosa_reset(void *opaque, int line, int level) { if (level) { @@ -112,7 +93,6 @@ static void tosa_misc_gpio_init(Object *obj) { DeviceState *dev = DEVICE(obj); - qdev_init_gpio_in_named(dev, tosa_gpio_leds, "leds", 4); qdev_init_gpio_in_named(dev, tosa_reset, "reset", 1); } @@ -122,6 +102,7 @@ static void tosa_gpio_setup(PXA2xxState *cpu, TC6393xbState *tmio) { DeviceState *misc_gpio; + LEDState *led[4]; misc_gpio = sysbus_create_simple(TYPE_TOSA_MISC_GPIO, -1, NULL); @@ -143,14 +124,23 @@ static void tosa_gpio_setup(PXA2xxState *cpu, qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_JC_CF_IRQ), NULL); + led[0] = led_create_simple(OBJECT(misc_gpio), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_BLUE, "bluetooth"); + led[1] = led_create_simple(OBJECT(misc_gpio), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_GREEN, "note"); + led[2] = led_create_simple(OBJECT(misc_gpio), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_AMBER, "charger-error"); + led[3] = led_create_simple(OBJECT(misc_gpio), GPIO_POLARITY_ACTIVE_HIGH, + LED_COLOR_GREEN, "wlan"); + qdev_connect_gpio_out(scp1, TOSA_GPIO_BT_LED, - qdev_get_gpio_in_named(misc_gpio, "leds", 0)); + qdev_get_gpio_in(DEVICE(led[0]), 0)); qdev_connect_gpio_out(scp1, TOSA_GPIO_NOTE_LED, - qdev_get_gpio_in_named(misc_gpio, "leds", 1)); + qdev_get_gpio_in(DEVICE(led[1]), 0)); qdev_connect_gpio_out(scp1, TOSA_GPIO_CHRG_ERR_LED, - qdev_get_gpio_in_named(misc_gpio, "leds", 2)); + qdev_get_gpio_in(DEVICE(led[2]), 0)); qdev_connect_gpio_out(scp1, TOSA_GPIO_WLAN_LED, - qdev_get_gpio_in_named(misc_gpio, "leds", 3)); + qdev_get_gpio_in(DEVICE(led[3]), 0)); qdev_connect_gpio_out(scp1, TOSA_GPIO_TC6393XB_L3V_ON, tc6393xb_l3v_get(tmio)); -- cgit v1.2.3-55-g7522