input/ps2: poll for mouse-reset results

The PS/2 driver retries to get mouse-reset results for 700 ms, sleeping
after each attempt for 10 ms. So, the driver needs a Timer session now.

Fixes #2713

repos/gems/recipes/raw/drivers_managed-pc/drivers.config

@@ -155,6 +155,7 @@
 			<service name="PD">    <parent/> </service>
 			<service name="CPU">   <parent/> </service>
 			<service name="LOG">   <parent/> </service>
+			<service name="Timer"> <parent/> </service>
 		</route>
 	</start>
 

repos/libports/run/acpica.run

@@ -152,6 +152,7 @@ append config {
 			<config verbose_keyboard="no" verbose_mouse="no" verbose_scancodes="no"/>
 			<route>
 				<service name="Platform"> <child name="platform_drv"/> </service>
+				<service name="Timer"> <child name="timer"/> </service>
 				<any-service> <parent/> </any-service>
 			</route>
 		</start>

repos/os/recipes/raw/drivers_interactive-pc/drivers.config

@@ -100,6 +100,7 @@
 			<service name="PD">       <parent/> </service>
 			<service name="CPU">      <parent/> </service>
 			<service name="LOG">      <parent/> </service>
+			<service name="Timer">    <parent/> </service>
 		</route>
 	</start>
 

repos/os/recipes/src/ps2_drv/used_apis

@@ -2,3 +2,4 @@ base
 os
 platform_session
 input_session
+timer_session

repos/os/run/input.run

@@ -72,6 +72,7 @@ append_if [have_spec ps2] config {
 			<service name="IO_PORT">  <parent/>    </service>
 			<service name="LOG">      <parent/>    </service>
 			<service name="Platform"> <any-child/> </service>
+			<service name="Timer">    <child name="timer"/> </service>
 		</route>
 	</start>
 	<alias name="input_drv" child="ps2_drv"/>}

repos/os/src/drivers/input/spec/ps2/pbxa9/main.cc

@@ -17,6 +17,7 @@
 #include <drivers/defs/pbxa9.h>
 #include <input/component.h>
 #include <input/root.h>
+#include <timer_session/connection.h>
 
 /* local includes */
 #include "ps2_keyboard.h"
@@ -46,11 +47,13 @@ struct Ps2::Main
 	Input::Session_component _session { _env, _env.ram() };
 	Input::Root_component    _root { _env.ep().rpc_ep(), _session };
 
+	Timer::Connection _timer { _env };
+
 	Genode::Attached_rom_dataspace _config { _env, "config" };
 
 	Genode::Reconstructible<Verbose> _verbose { _config.xml() };
 
-	Mouse    _mouse    { _pl050.aux_interface(), _session.event_queue(),        *_verbose };
+	Mouse    _mouse    { _pl050.aux_interface(), _session.event_queue(), _timer, *_verbose };
 	Keyboard _keyboard { _pl050.kbd_interface(), _session.event_queue(), false, *_verbose };
 
 	Irq_handler _mouse_irq    { _env, PL050_MOUSE_IRQ, _pl050.aux_interface(), _mouse };

repos/os/src/drivers/input/spec/ps2/ps2_mouse.h

@@ -17,6 +17,7 @@
 #include <base/log.h>
 #include <input/event_queue.h>
 #include <input/keycodes.h>
+#include <timer_session/connection.h>
 
 #include "input_driver.h"
 
@@ -77,6 +78,7 @@ class Ps2::Mouse : public Input_driver
 
 		Type                _type { PS2 };
 
+		Timer::Connection  &_timer;
 		Verbose      const &_verbose;
 		bool                _button_state[NUM_BUTTONS];
 
@@ -166,9 +168,9 @@ class Ps2::Mouse : public Input_driver
 	public:
 
 		Mouse(Serial_interface &aux, Input::Event_queue &ev_queue,
-		      Verbose const &verbose)
+		      Timer::Connection &timer, Verbose const &verbose)
 		:
-			_aux(aux), _ev_queue(ev_queue), _verbose(verbose)
+			_aux(aux), _ev_queue(ev_queue), _timer(timer), _verbose(verbose)
 		{
 			for (unsigned i = 0; i < NUM_BUTTONS; ++i)
 				_button_state[i] = false;
@@ -180,6 +182,20 @@ class Ps2::Mouse : public Input_driver
 			_aux.write(CMD_RESET);
 			if (_aux.read() != RET_ACK)
 				Genode::warning("could not reset mouse (missing ack)");
+
+			/* poll TIMEOUT_MS for reset results each SLEEP_MS */
+			enum { TIMEOUT_MS = 700, SLEEP_MS = 10 };
+			unsigned timeout_ms = 0;
+			do {
+				_timer.msleep(SLEEP_MS);
+				timeout_ms += SLEEP_MS;
+			} while (!_aux.data_read_ready() && timeout_ms < TIMEOUT_MS);
+
+			if (!_aux.data_read_ready()) {
+				Genode::warning("could not reset mouse (no response)");
+				return;
+			}
+
 			if (_aux.read() != 0xaa)
 				Genode::warning("could not reset mouse (unexpected response)");
 			if (_aux.read() != 0x00)
@@ -189,6 +205,13 @@ class Ps2::Mouse : public Input_driver
 			if (_aux.read() != RET_ACK)
 				Genode::warning("could not enable stream");
 
+			/*
+			 * Give the hardware some time to settle before probing extended
+			 * mouse versions. Otherwise, current Lenovo trackpoints (X260,
+			 * T470) stop working.
+			 */
+			_timer.msleep(5);
+
 			/* probe for protocol extensions */
 			if (_probe_exps2()) {
 				_type       = EXPS2;

repos/os/src/drivers/input/spec/ps2/x86/main.cc

@@ -20,6 +20,7 @@
 #include <input/component.h>
 #include <input/root.h>
 #include <platform_session/connection.h>
+#include <timer_session/connection.h>
 
 /* local includes */
 #include "i8042.h"
@@ -41,6 +42,8 @@ struct Ps2::Main
 
 	Platform::Connection _platform { _env };
 
+	Timer::Connection _timer { _env };
+
 	Platform::Device_capability _ps2_device_cap()
 	{
 		return _platform.with_upgrade([&] () {
@@ -61,7 +64,7 @@ struct Ps2::Main
 	Keyboard _keyboard { _i8042.kbd_interface(), _session.event_queue(),
 	                     _i8042.kbd_xlate(), *_verbose };
 
-	Mouse _mouse { _i8042.aux_interface(), _session.event_queue(), *_verbose };
+	Mouse _mouse { _i8042.aux_interface(), _session.event_queue(), _timer, *_verbose };
 
 	Irq_handler _keyboard_irq { _env.ep(), _keyboard, _device_ps2.irq(0) };
 	Irq_handler _mouse_irq    { _env.ep(), _mouse,    _device_ps2.irq(1) };