On 6/19/20 4:50 PM, Philippe Mathieu-Daudé wrote: > This series add trace events to better display LEDs changes. > This helps me to work on a generic LED device, see: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg711917.html
FYI I'm going to send a v4, using the generic LED device. > > Example when booting an obmc-phosphor-image, we can see the LED #14 > (front-power LED) starting to blink. > > - ASCII LED bar view: > > $ qemu-system-arm -M witherspoon-bmc -trace pca9552_leds_status > 19286@1592574170.202791:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [*...............] > 19286@1592574170.203609:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [**..............] > 19286@1592574170.204102:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [***.............] > 19286@1592574170.204415:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****............] > 19286@1592574170.204758:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........*..] > 19286@1592574170.205070:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........**.] > 19286@1592574170.205380:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........***] > 19286@1592574235.384845:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........*.*] > 19286@1592574235.894049:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........***] > 19286@1592574236.404277:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........*.*] > 19286@1592574236.914644:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........***] > 19286@1592574237.424558:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........*.*] > 19286@1592574237.934580:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........***] > 19286@1592574238.444688:pca9552_leds_status 0x55dde47807c0 LEDs 0-15 > [****.........*.*] > > - Only display LEDs which status changes: > > $ qemu-system-arm -M witherspoon-bmc -trace pca9552_led_change > 23367@1592575218.896117:pca9552_led_change 0x557cb6896d80 LED id:0 status: > 0 -> 1 > 23367@1592575218.897072:pca9552_led_change 0x557cb6896d80 LED id:1 status: > 0 -> 1 > 23367@1592575218.897487:pca9552_led_change 0x557cb6896d80 LED id:2 status: > 0 -> 1 > 23367@1592575218.897855:pca9552_led_change 0x557cb6896d80 LED id:3 status: > 0 -> 1 > 23367@1592575218.898256:pca9552_led_change 0x557cb6896d80 LED id:13 status: > 0 -> 1 > 23367@1592575218.898663:pca9552_led_change 0x557cb6896d80 LED id:14 status: > 0 -> 1 > 23367@1592575218.899138:pca9552_led_change 0x557cb6896d80 LED id:15 status: > 0 -> 1 > 23367@1592575281.593379:pca9552_led_change 0x557cb6896d80 LED id:14 status: > 1 -> 0 > 23367@1592575282.102994:pca9552_led_change 0x557cb6896d80 LED id:14 status: > 0 -> 1 > 23367@1592575282.613558:pca9552_led_change 0x557cb6896d80 LED id:14 status: > 1 -> 0 > 23367@1592575283.122774:pca9552_led_change 0x557cb6896d80 LED id:14 status: > 0 -> 1 > > For information about how to test the obmc-phosphor-image, see: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg712911.html > > Supersedes: <20200617064734.26956-1-f4...@amsat.org> > > Philippe Mathieu-Daudé (4): > hw/misc/pca9552: Replace magic value by PCA9552_LED_COUNT definition > hw/misc/pca9552: Add a PCA955X_LED_MAX definition > hw/misc/pca9552: Trace LED On/Off events > hw/misc/pca9552: Trace LED change events > > include/hw/misc/pca9552.h | 2 ++ > hw/misc/pca9552.c | 60 ++++++++++++++++++++++++++++++++++++++- > hw/misc/trace-events | 4 +++ > 3 files changed, 65 insertions(+), 1 deletion(-) >
