OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

hw/arm/aspeed: Add the 3 front LEDs drived by the PCA9552 #1

Browse Source 
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 <richard.henderson@linaro.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200912134041.946260-5-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-06-20 18:54:41 +02:00
parent 4aef43991a
commit 7cfbde5ea1
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hw/arm/Kconfig
View File

@ -404,6 +404,7 @@ config ASPEED_SOC
select TMP105
select TMP421
select UNIMP
select LED
config MPS2
bool

20
hw/arm/aspeed.c
View File

@ -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);