drm/amd/display: Add support for DCN302 (v2)

 - add DCN302 resource, irq service, dmub loader,
 - handle  DC_VERSION_DCN_3_02
 - define DCN302 power gating functions
 - handle DCN302 in GPIO files
 - define I2C regs
 - add CONFIG_DRM_AMD_DC_DCN3_02 guard

v2: rebase fixes (Alex)

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 387 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/irq/Makefile b/drivers/gpu/drm/amd/display/dc/irq/Makefile
index 405c25322607..b279dd71d9b3 100644
--- a/drivers/gpu/drm/amd/display/dc/irq/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/irq/Makefile
@@ -104,3 +104,13 @@ AMD_DAL_IRQ_DCN3 = $(addprefix $(AMDDALPATH)/dc/irq/dcn30/,$(IRQ_DCN3))
 
 AMD_DISPLAY_FILES += $(AMD_DAL_IRQ_DCN3)
 endif
+ifdef CONFIG_DRM_AMD_DC_DCN3_02
+###############################################################################
+# DCN 3_02
+###############################################################################
+IRQ_DCN3_02 = irq_service_dcn302.o
+
+AMD_DAL_IRQ_DCN3_02 = $(addprefix $(AMDDALPATH)/dc/irq/dcn302/,$(IRQ_DCN3_02))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_IRQ_DCN3_02)
+endif
diff --git a/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.c b/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.c
new file mode 100644
index 000000000000..927fdc43fb9f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright 2020 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "dm_services.h"
+
+#include "irq_service_dcn302.h"
+
+#include "../dce110/irq_service_dce110.h"
+
+#include "dimgrey_cavefish_ip_offset.h"
+#include "dcn/dcn_3_0_0_offset.h"
+#include "dcn/dcn_3_0_0_sh_mask.h"
+
+#include "ivsrcid/dcn/irqsrcs_dcn_1_0.h"
+
+static enum dc_irq_source to_dal_irq_source_dcn302(struct irq_service *irq_service, uint32_t src_id, uint32_t ext_id)
+{
+	switch (src_id) {
+	case DCN_1_0__SRCID__DC_D1_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK1;
+	case DCN_1_0__SRCID__DC_D2_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK2;
+	case DCN_1_0__SRCID__DC_D3_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK3;
+	case DCN_1_0__SRCID__DC_D4_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK4;
+	case DCN_1_0__SRCID__DC_D5_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK5;
+	case DCN_1_0__SRCID__DC_D6_OTG_VSTARTUP:
+		return DC_IRQ_SOURCE_VBLANK6;
+	case DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP1;
+	case DCN_1_0__SRCID__HUBP1_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP2;
+	case DCN_1_0__SRCID__HUBP2_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP3;
+	case DCN_1_0__SRCID__HUBP3_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP4;
+	case DCN_1_0__SRCID__HUBP4_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP5;
+	case DCN_1_0__SRCID__HUBP5_FLIP_INTERRUPT:
+		return DC_IRQ_SOURCE_PFLIP6;
+	case DCN_1_0__SRCID__OTG0_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE1;
+	case DCN_1_0__SRCID__OTG1_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE2;
+	case DCN_1_0__SRCID__OTG2_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE3;
+	case DCN_1_0__SRCID__OTG3_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE4;
+	case DCN_1_0__SRCID__OTG4_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE5;
+	case DCN_1_0__SRCID__OTG5_IHC_V_UPDATE_NO_LOCK_INTERRUPT:
+		return DC_IRQ_SOURCE_VUPDATE6;
+
+	case DCN_1_0__SRCID__DC_HPD1_INT:
+		/* generic src_id for all HPD and HPDRX interrupts */
+		switch (ext_id) {
+		case DCN_1_0__CTXID__DC_HPD1_INT:
+			return DC_IRQ_SOURCE_HPD1;
+		case DCN_1_0__CTXID__DC_HPD2_INT:
+			return DC_IRQ_SOURCE_HPD2;
+		case DCN_1_0__CTXID__DC_HPD3_INT:
+			return DC_IRQ_SOURCE_HPD3;
+		case DCN_1_0__CTXID__DC_HPD4_INT:
+			return DC_IRQ_SOURCE_HPD4;
+		case DCN_1_0__CTXID__DC_HPD5_INT:
+			return DC_IRQ_SOURCE_HPD5;
+		case DCN_1_0__CTXID__DC_HPD6_INT:
+			return DC_IRQ_SOURCE_HPD6;
+		case DCN_1_0__CTXID__DC_HPD1_RX_INT:
+			return DC_IRQ_SOURCE_HPD1RX;
+		case DCN_1_0__CTXID__DC_HPD2_RX_INT:
+			return DC_IRQ_SOURCE_HPD2RX;
+		case DCN_1_0__CTXID__DC_HPD3_RX_INT:
+			return DC_IRQ_SOURCE_HPD3RX;
+		case DCN_1_0__CTXID__DC_HPD4_RX_INT:
+			return DC_IRQ_SOURCE_HPD4RX;
+		case DCN_1_0__CTXID__DC_HPD5_RX_INT:
+			return DC_IRQ_SOURCE_HPD5RX;
+		case DCN_1_0__CTXID__DC_HPD6_RX_INT:
+			return DC_IRQ_SOURCE_HPD6RX;
+		default:
+			return DC_IRQ_SOURCE_INVALID;
+		}
+		break;
+
+	default:
+		return DC_IRQ_SOURCE_INVALID;
+	}
+}
+
+static bool hpd_ack(struct irq_service *irq_service, const struct irq_source_info *info)
+{
+	uint32_t addr = info->status_reg;
+	uint32_t value = dm_read_reg(irq_service->ctx, addr);
+	uint32_t current_status = get_reg_field_value(value, HPD0_DC_HPD_INT_STATUS, DC_HPD_SENSE_DELAYED);
+
+	dal_irq_service_ack_generic(irq_service, info);
+
+	value = dm_read_reg(irq_service->ctx, info->enable_reg);
+
+	set_reg_field_value(value, current_status ? 0 : 1, HPD0_DC_HPD_INT_CONTROL, DC_HPD_INT_POLARITY);
+
+	dm_write_reg(irq_service->ctx, info->enable_reg, value);
+
+	return true;
+}
+
+static const struct irq_source_info_funcs hpd_irq_info_funcs = {
+		.set = NULL,
+		.ack = hpd_ack
+};
+
+static const struct irq_source_info_funcs hpd_rx_irq_info_funcs = {
+		.set = NULL,
+		.ack = NULL
+};
+
+static const struct irq_source_info_funcs pflip_irq_info_funcs = {
+		.set = NULL,
+		.ack = NULL
+};
+
+static const struct irq_source_info_funcs vupdate_no_lock_irq_info_funcs = {
+	.set = NULL,
+	.ack = NULL
+};
+
+static const struct irq_source_info_funcs vblank_irq_info_funcs = {
+		.set = NULL,
+		.ack = NULL
+};
+
+#undef BASE_INNER
+#define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg
+
+/* compile time expand base address. */
+#define BASE(seg) BASE_INNER(seg)
+
+#define SRI(reg_name, block, id)\
+		BASE(mm ## block ## id ## _ ## reg_name ## _BASE_IDX) + \
+		mm ## block ## id ## _ ## reg_name
+
+
+#define IRQ_REG_ENTRY(block, reg_num, reg1, mask1, reg2, mask2)\
+		.enable_reg = SRI(reg1, block, reg_num),\
+		.enable_mask = block ## reg_num ## _ ## reg1 ## __ ## mask1 ## _MASK,\
+		.enable_value = {\
+				block ## reg_num ## _ ## reg1 ## __ ## mask1 ## _MASK,\
+				~block ## reg_num ## _ ## reg1 ## __ ## mask1 ## _MASK \
+		},\
+		.ack_reg = SRI(reg2, block, reg_num),\
+		.ack_mask = block ## reg_num ## _ ## reg2 ## __ ## mask2 ## _MASK,\
+		.ack_value = block ## reg_num ## _ ## reg2 ## __ ## mask2 ## _MASK \
+
+
+
+#define hpd_int_entry(reg_num)\
+		[DC_IRQ_SOURCE_HPD1 + reg_num] = {\
+				IRQ_REG_ENTRY(HPD, reg_num,\
+						DC_HPD_INT_CONTROL, DC_HPD_INT_EN,\
+						DC_HPD_INT_CONTROL, DC_HPD_INT_ACK),\
+						.status_reg = SRI(DC_HPD_INT_STATUS, HPD, reg_num),\
+						.funcs = &hpd_irq_info_funcs\
+}
+
+#define hpd_rx_int_entry(reg_num)\
+		[DC_IRQ_SOURCE_HPD1RX + reg_num] = {\
+				IRQ_REG_ENTRY(HPD, reg_num,\
+						DC_HPD_INT_CONTROL, DC_HPD_RX_INT_EN,\
+						DC_HPD_INT_CONTROL, DC_HPD_RX_INT_ACK),\
+						.status_reg = SRI(DC_HPD_INT_STATUS, HPD, reg_num),\
+						.funcs = &hpd_rx_irq_info_funcs\
+}
+#define pflip_int_entry(reg_num)\
+		[DC_IRQ_SOURCE_PFLIP1 + reg_num] = {\
+				IRQ_REG_ENTRY(HUBPREQ, reg_num,\
+						DCSURF_SURFACE_FLIP_INTERRUPT, SURFACE_FLIP_INT_MASK,\
+						DCSURF_SURFACE_FLIP_INTERRUPT, SURFACE_FLIP_CLEAR),\
+						.funcs = &pflip_irq_info_funcs\
+}
+
+/* vupdate_no_lock_int_entry maps to DC_IRQ_SOURCE_VUPDATEx, to match semantic
+ * of DCE's DC_IRQ_SOURCE_VUPDATEx.
+ */
+#define vupdate_no_lock_int_entry(reg_num)\
+	[DC_IRQ_SOURCE_VUPDATE1 + reg_num] = {\
+		IRQ_REG_ENTRY(OTG, reg_num,\
+			OTG_GLOBAL_SYNC_STATUS, VUPDATE_NO_LOCK_INT_EN,\
+			OTG_GLOBAL_SYNC_STATUS, VUPDATE_NO_LOCK_EVENT_CLEAR),\
+		.funcs = &vupdate_no_lock_irq_info_funcs\
+	}
+
+#define vblank_int_entry(reg_num)\
+	[DC_IRQ_SOURCE_VBLANK1 + reg_num] = {\
+		IRQ_REG_ENTRY(OTG, reg_num,\
+			OTG_GLOBAL_SYNC_STATUS, VSTARTUP_INT_EN,\
+			OTG_GLOBAL_SYNC_STATUS, VSTARTUP_EVENT_CLEAR),\
+		.funcs = &vblank_irq_info_funcs\
+	}
+
+#define dummy_irq_entry() { .funcs = &dummy_irq_info_funcs }
+
+#define i2c_int_entry(reg_num) \
+		[DC_IRQ_SOURCE_I2C_DDC ## reg_num] = dummy_irq_entry()
+
+#define dp_sink_int_entry(reg_num) \
+		[DC_IRQ_SOURCE_DPSINK ## reg_num] = dummy_irq_entry()
+
+#define gpio_pad_int_entry(reg_num) \
+		[DC_IRQ_SOURCE_GPIOPAD ## reg_num] = dummy_irq_entry()
+
+#define dc_underflow_int_entry(reg_num) \
+		[DC_IRQ_SOURCE_DC ## reg_num ## UNDERFLOW] = dummy_irq_entry()
+
+static const struct irq_source_info_funcs dummy_irq_info_funcs = {
+		.set = dal_irq_service_dummy_set,
+		.ack = dal_irq_service_dummy_ack
+};
+
+static const struct irq_source_info irq_source_info_dcn302[DAL_IRQ_SOURCES_NUMBER] = {
+		[DC_IRQ_SOURCE_INVALID] = dummy_irq_entry(),
+		hpd_int_entry(0),
+		hpd_int_entry(1),
+		hpd_int_entry(2),
+		hpd_int_entry(3),
+		hpd_int_entry(4),
+		hpd_rx_int_entry(0),
+		hpd_rx_int_entry(1),
+		hpd_rx_int_entry(2),
+		hpd_rx_int_entry(3),
+		hpd_rx_int_entry(4),
+		i2c_int_entry(1),
+		i2c_int_entry(2),
+		i2c_int_entry(3),
+		i2c_int_entry(4),
+		i2c_int_entry(5),
+		dp_sink_int_entry(1),
+		dp_sink_int_entry(2),
+		dp_sink_int_entry(3),
+		dp_sink_int_entry(4),
+		dp_sink_int_entry(5),
+		[DC_IRQ_SOURCE_TIMER] = dummy_irq_entry(),
+		pflip_int_entry(0),
+		pflip_int_entry(1),
+		pflip_int_entry(2),
+		pflip_int_entry(3),
+		pflip_int_entry(4),
+		[DC_IRQ_SOURCE_PFLIP_UNDERLAY0] = dummy_irq_entry(),
+		gpio_pad_int_entry(0),
+		gpio_pad_int_entry(1),
+		gpio_pad_int_entry(2),
+		gpio_pad_int_entry(3),
+		gpio_pad_int_entry(4),
+		gpio_pad_int_entry(5),
+		gpio_pad_int_entry(6),
+		gpio_pad_int_entry(7),
+		gpio_pad_int_entry(8),
+		gpio_pad_int_entry(9),
+		gpio_pad_int_entry(10),
+		gpio_pad_int_entry(11),
+		gpio_pad_int_entry(12),
+		gpio_pad_int_entry(13),
+		gpio_pad_int_entry(14),
+		gpio_pad_int_entry(15),
+		gpio_pad_int_entry(16),
+		gpio_pad_int_entry(17),
+		gpio_pad_int_entry(18),
+		gpio_pad_int_entry(19),
+		gpio_pad_int_entry(20),
+		gpio_pad_int_entry(21),
+		gpio_pad_int_entry(22),
+		gpio_pad_int_entry(23),
+		gpio_pad_int_entry(24),
+		gpio_pad_int_entry(25),
+		gpio_pad_int_entry(26),
+		gpio_pad_int_entry(27),
+		gpio_pad_int_entry(28),
+		gpio_pad_int_entry(29),
+		gpio_pad_int_entry(30),
+		dc_underflow_int_entry(1),
+		dc_underflow_int_entry(2),
+		dc_underflow_int_entry(3),
+		dc_underflow_int_entry(4),
+		dc_underflow_int_entry(5),
+		[DC_IRQ_SOURCE_DMCU_SCP] = dummy_irq_entry(),
+		[DC_IRQ_SOURCE_VBIOS_SW] = dummy_irq_entry(),
+		vupdate_no_lock_int_entry(0),
+		vupdate_no_lock_int_entry(1),
+		vupdate_no_lock_int_entry(2),
+		vupdate_no_lock_int_entry(3),
+		vupdate_no_lock_int_entry(4),
+		vblank_int_entry(0),
+		vblank_int_entry(1),
+		vblank_int_entry(2),
+		vblank_int_entry(3),
+		vblank_int_entry(4),
+};
+
+static const struct irq_service_funcs irq_service_funcs_dcn302 = {
+		.to_dal_irq_source = to_dal_irq_source_dcn302
+};
+
+static void dcn302_irq_construct(struct irq_service *irq_service, struct irq_service_init_data *init_data)
+{
+	dal_irq_service_construct(irq_service, init_data);
+
+	irq_service->info = irq_source_info_dcn302;
+	irq_service->funcs = &irq_service_funcs_dcn302;
+}
+
+struct irq_service *dal_irq_service_dcn302_create(struct irq_service_init_data *init_data)
+{
+	struct irq_service *irq_service = kzalloc(sizeof(*irq_service), GFP_KERNEL);
+
+	if (!irq_service)
+		return NULL;
+
+	dcn302_irq_construct(irq_service, init_data);
+	return irq_service;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.h b/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.h
new file mode 100644
index 000000000000..c8cd41bc7757
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/irq/dcn302/irq_service_dcn302.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DAL_IRQ_SERVICE_DCN302_H__
+#define __DAL_IRQ_SERVICE_DCN302_H__
+
+#include "../irq_service.h"
+
+struct irq_service *dal_irq_service_dcn302_create(struct irq_service_init_data *init_data);
+
+#endif /* __DAL_IRQ_SERVICE_DCN302_H__ */