[PATCH] pmdomain: rockchip: Add a regulator to the RK3568 NPU power domain

[MidG971]

From: Midgy BALON <midgy971 at gmail.com>

The RK3568 NPU rail (vdd_npu) needs to be enabled before the domain is
powered on and disabled after it is powered off. Give DOMAIN_RK3568 a
regulator parameter (like DOMAIN_RK3588 already has) so the NPU domain
can set need_regulator, letting genpd manage the rail wired up as the
domain's domain-supply instead of marking it always-on in DT.

Suggested-by: Chaoyi Chen <chaoyi.chen at rock-chips.com>
Signed-off-by: Midgy BALON <midgy971 at gmail.com>
---
This patch was part of the RFC NPU series [1]; Ulf Hansson and Heiko
Stübner reviewed it there and confirmed it can be applied independently of
the rest of the (still-RFC) rocket driver and DT patches, so it is reposted
standalone. The NPU domain's domain-supply DT wiring follows in a separate
patch, so this change alone is a no-op at runtime.

Changes since the RFC posting:
- Move DOMAIN_M_R below the other DOMAIN_M_* macros so they stay
  alphabetically sorted (Heiko Stübner).

[1] https://lore.kernel.org/linux-rockchip/20260613070116.438906-1-midgy971@gmail.com/

 drivers/pmdomain/rockchip/pm-domains.c | 36 ++++++++++++++++++--------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/drivers/pmdomain/rockchip/pm-domains.c b/drivers/pmdomain/rockchip/pm-domains.c
index 490bbb1d1d8e8..ba66ae7194289 100644
--- a/drivers/pmdomain/rockchip/pm-domains.c
+++ b/drivers/pmdomain/rockchip/pm-domains.c
@@ -204,6 +204,20 @@ struct rockchip_pmu {
 	.active_wakeup = wakeup,			\
 }
 
+#define DOMAIN_M_R(_name, pwr, status, req, idle, ack, wakeup, regulator)	\
+{							\
+	.name = _name,				\
+	.pwr_w_mask = (pwr) << 16,			\
+	.pwr_mask = (pwr),				\
+	.status_mask = (status),			\
+	.req_w_mask = (req) << 16,			\
+	.req_mask = (req),				\
+	.idle_mask = (idle),				\
+	.ack_mask = (ack),				\
+	.active_wakeup = wakeup,			\
+	.need_regulator = regulator,			\
+}
+
 #define DOMAIN_RK3036(_name, req, ack, idle, wakeup)		\
 {							\
 	.name = _name,				\
@@ -241,8 +255,8 @@ struct rockchip_pmu {
 #define DOMAIN_RK3562(name, pwr, req, g_mask, mem, wakeup)		\
 	DOMAIN_M_G_SD(name, pwr, pwr, req, req, req, g_mask, mem, wakeup, false)
 
-#define DOMAIN_RK3568(name, pwr, req, wakeup)		\
-	DOMAIN_M(name, pwr, pwr, req, req, req, wakeup)
+#define DOMAIN_RK3568(name, pwr, req, wakeup, regulator)		\
+	DOMAIN_M_R(name, pwr, pwr, req, req, req, wakeup, regulator)
 
 #define DOMAIN_RK3576(name, p_offset, pwr, status, r_status, r_offset, req, idle, g_mask, wakeup)	\
 	DOMAIN_M_O_R_G(name, p_offset, pwr, status, 0, r_status, r_status, r_offset, req, idle, idle, g_mask, wakeup)
@@ -1274,15 +1288,15 @@ static const struct rockchip_domain_info rk3562_pm_domains[] = {
 };
 
 static const struct rockchip_domain_info rk3568_pm_domains[] = {
-	[RK3568_PD_NPU]		= DOMAIN_RK3568("npu",  BIT(1), BIT(2),  false),
-	[RK3568_PD_GPU]		= DOMAIN_RK3568("gpu",  BIT(0), BIT(1),  false),
-	[RK3568_PD_VI]		= DOMAIN_RK3568("vi",   BIT(6), BIT(3),  false),
-	[RK3568_PD_VO]		= DOMAIN_RK3568("vo",   BIT(7), BIT(4),  false),
-	[RK3568_PD_RGA]		= DOMAIN_RK3568("rga",  BIT(5), BIT(5),  false),
-	[RK3568_PD_VPU]		= DOMAIN_RK3568("vpu",  BIT(2), BIT(6),  false),
-	[RK3568_PD_RKVDEC]	= DOMAIN_RK3568("vdec", BIT(4), BIT(8),  false),
-	[RK3568_PD_RKVENC]	= DOMAIN_RK3568("venc", BIT(3), BIT(7),  false),
-	[RK3568_PD_PIPE]	= DOMAIN_RK3568("pipe", BIT(8), BIT(11), false),
+	[RK3568_PD_NPU]		= DOMAIN_RK3568("npu",  BIT(1), BIT(2),  false, true),
+	[RK3568_PD_GPU]		= DOMAIN_RK3568("gpu",  BIT(0), BIT(1),  false, false),
+	[RK3568_PD_VI]		= DOMAIN_RK3568("vi",   BIT(6), BIT(3),  false, false),
+	[RK3568_PD_VO]		= DOMAIN_RK3568("vo",   BIT(7), BIT(4),  false, false),
+	[RK3568_PD_RGA]		= DOMAIN_RK3568("rga",  BIT(5), BIT(5),  false, false),
+	[RK3568_PD_VPU]		= DOMAIN_RK3568("vpu",  BIT(2), BIT(6),  false, false),
+	[RK3568_PD_RKVDEC]	= DOMAIN_RK3568("vdec", BIT(4), BIT(8),  false, false),
+	[RK3568_PD_RKVENC]	= DOMAIN_RK3568("venc", BIT(3), BIT(7),  false, false),
+	[RK3568_PD_PIPE]	= DOMAIN_RK3568("pipe", BIT(8), BIT(11), false, false),
 };
 
 static const struct rockchip_domain_info rk3576_pm_domains[] = {
-- 
2.39.5