119 static const char *get_domain_name(u8 domain)  in get_domain_name()  argument
121 	switch (domain) {  in get_domain_name()
136 static u32 get_domain_base(u8 domain)  in get_domain_base()  argument
138 	switch (domain) {  in get_domain_base()
153 static u32 get_domain_ready_reg(u32 domain)  in get_domain_ready_reg()  argument
155 	return get_domain_base(domain) + (PWR_L2_READY - PWR_L2_PRESENT);  in get_domain_ready_reg()
158 static u32 get_domain_pwrtrans_reg(u32 domain)  in get_domain_pwrtrans_reg()  argument
160 	return get_domain_base(domain) + (PWR_L2_PWRTRANS - PWR_L2_PRESENT);  in get_domain_pwrtrans_reg()
163 static bool is_valid_domain(u32 domain)  in is_valid_domain()  argument
165 	return get_domain_base(domain) != 0;  in is_valid_domain()
173 static u8 get_domain_subdomain(struct panthor_device *ptdev, u32 domain)  in get_domain_subdomain()  argument
175 	if (domain == PWR_COMMAND_DOMAIN_SHADER && has_rtu(ptdev))  in get_domain_subdomain()
181 static int panthor_pwr_domain_wait_transition(struct panthor_device *ptdev, u32 domain,  in panthor_pwr_domain_wait_transition()  argument
184 	u32 pwrtrans_reg = get_domain_pwrtrans_reg(domain);  in panthor_pwr_domain_wait_transition()
191 		drm_err(&ptdev->base, "%s domain power in transition, pwrtrans(0x%llx)",  in panthor_pwr_domain_wait_transition()
192 			get_domain_name(domain), val);  in panthor_pwr_domain_wait_transition()
214 static int panthor_pwr_domain_transition(struct panthor_device *ptdev, u32 cmd, u32 domain,  in panthor_pwr_domain_transition()  argument
217 	u32 ready_reg = get_domain_ready_reg(domain);  in panthor_pwr_domain_transition()
218 	u32 pwr_cmd = PWR_COMMAND_DEF(cmd, domain, get_domain_subdomain(ptdev, domain));  in panthor_pwr_domain_transition()
223 	if (drm_WARN_ON(&ptdev->base, !is_valid_domain(domain)))  in panthor_pwr_domain_transition()
234 		drm_err(&ptdev->base, "Invalid power domain transition command (0x%x)", cmd);  in panthor_pwr_domain_transition()
238 	ret = panthor_pwr_domain_wait_transition(ptdev, domain, timeout_us);  in panthor_pwr_domain_transition()
242 	/* domain already in target state, return early */  in panthor_pwr_domain_transition()
252 			"timeout waiting on %s power domain transition, cmd(0x%x), arg(0x%llx)",  in panthor_pwr_domain_transition()
253 			get_domain_name(domain), pwr_cmd, mask);  in panthor_pwr_domain_transition()
269  * retract_domain() - Retract control of a domain from MCU
271  * @domain: Domain to retract the control
273  * Retracting L2 domain is not expected since it won't be delegated.
276  *         -EPERM if domain is L2.
279 static int retract_domain(struct panthor_device *ptdev, u32 domain)  in retract_domain()  argument
281 	const u32 pwr_cmd = PWR_COMMAND_DEF(PWR_COMMAND_RETRACT, domain, 0);  in retract_domain()
283 	const u64 delegated_mask = PWR_STATUS_DOMAIN_DELEGATED(domain);  in retract_domain()
284 	const u64 allow_mask = PWR_STATUS_DOMAIN_ALLOWED(domain);  in retract_domain()
288 	if (drm_WARN_ON(&ptdev->base, domain == PWR_COMMAND_DOMAIN_L2))  in retract_domain()
294 		drm_err(&ptdev->base, "%s domain retract pending", get_domain_name(domain));  in retract_domain()
299 		drm_dbg(&ptdev->base, "%s domain already retracted", get_domain_name(domain));  in retract_domain()
313 		drm_err(&ptdev->base, "Retracting %s domain timeout, cmd(0x%x)",  in retract_domain()
314 			get_domain_name(domain), pwr_cmd);  in retract_domain()
322  * delegate_domain() - Delegate control of a domain to MCU
324  * @domain: Domain to delegate the control
326  * Delegating L2 domain is prohibited.
330  * *       -EPERM if domain is L2.
333 static int delegate_domain(struct panthor_device *ptdev, u32 domain)  in delegate_domain()  argument
335 	const u32 pwr_cmd = PWR_COMMAND_DEF(PWR_COMMAND_DELEGATE, domain, 0);  in delegate_domain()
337 	const u64 allow_mask = PWR_STATUS_DOMAIN_ALLOWED(domain);  in delegate_domain()
338 	const u64 delegated_mask = PWR_STATUS_DOMAIN_DELEGATED(domain);  in delegate_domain()
342 	if (drm_WARN_ON(&ptdev->base, domain == PWR_COMMAND_DOMAIN_L2))  in delegate_domain()
351 		drm_warn(&ptdev->base, "Delegating %s domain not allowed", get_domain_name(domain));  in delegate_domain()
355 	ret = panthor_pwr_domain_wait_transition(ptdev, domain, PWR_TRANSITION_TIMEOUT_US);  in delegate_domain()
369 		drm_err(&ptdev->base, "Delegating %s domain timeout, cmd(0x%x)",  in delegate_domain()
370 			get_domain_name(domain), pwr_cmd);  in delegate_domain()
401  * panthor_pwr_domain_force_off - Forcefully power down a domain.
403  * @domain: Domain to forcefully power down.
406  * domain. However, if retraction fails, the operation is aborted. If power off
407  * fails, the domain will remain retracted and under the host control.
411 static int panthor_pwr_domain_force_off(struct panthor_device *ptdev, u32 domain)  in panthor_pwr_domain_force_off()  argument
413 	const u64 domain_ready = gpu_read64(ptdev, get_domain_ready_reg(domain));  in panthor_pwr_domain_force_off()
416 	/* Domain already powered down, early exit. */  in panthor_pwr_domain_force_off()
420 	/* Domain has to be in host control to issue power off command. */  in panthor_pwr_domain_force_off()
421 	ret = retract_domain(ptdev, domain);  in panthor_pwr_domain_force_off()
425 	return panthor_pwr_domain_power_off(ptdev, domain, domain_ready, PWR_TRANSITION_TIMEOUT_US);  in panthor_pwr_domain_force_off()
489 		drm_warn(&ptdev->base, "Power off L2 domain not allowed");  in panthor_pwr_l2_power_off()
516 		drm_warn(&ptdev->base, "Power on L2 domain not allowed");  in panthor_pwr_l2_power_on()