Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 562 insertions, 0 deletions

diff --git a/drivers/gpu/drm/imx/dcss/dcss-dpr.c b/drivers/gpu/drm/imx/dcss/dcss-dpr.c
new file mode 100644
index 000000000..df9dab949
--- /dev/null
+++ b/drivers/gpu/drm/imx/dcss/dcss-dpr.c
@@ -0,0 +1,562 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 NXP.
+ */
+
+#include <linux/device.h>
+#include <linux/slab.h>
+
+#include "dcss-dev.h"
+
+#define DCSS_DPR_SYSTEM_CTRL0			0x000
+#define   RUN_EN				BIT(0)
+#define   SOFT_RESET				BIT(1)
+#define   REPEAT_EN				BIT(2)
+#define   SHADOW_LOAD_EN			BIT(3)
+#define   SW_SHADOW_LOAD_SEL			BIT(4)
+#define   BCMD2AXI_MSTR_ID_CTRL			BIT(16)
+#define DCSS_DPR_IRQ_MASK			0x020
+#define DCSS_DPR_IRQ_MASK_STATUS		0x030
+#define DCSS_DPR_IRQ_NONMASK_STATUS		0x040
+#define   IRQ_DPR_CTRL_DONE			BIT(0)
+#define   IRQ_DPR_RUN				BIT(1)
+#define   IRQ_DPR_SHADOW_LOADED			BIT(2)
+#define   IRQ_AXI_READ_ERR			BIT(3)
+#define   DPR2RTR_YRGB_FIFO_OVFL		BIT(4)
+#define   DPR2RTR_UV_FIFO_OVFL			BIT(5)
+#define   DPR2RTR_FIFO_LD_BUF_RDY_YRGB_ERR	BIT(6)
+#define   DPR2RTR_FIFO_LD_BUF_RDY_UV_ERR	BIT(7)
+#define DCSS_DPR_MODE_CTRL0			0x050
+#define   RTR_3BUF_EN				BIT(0)
+#define   RTR_4LINE_BUF_EN			BIT(1)
+#define   TILE_TYPE_POS				2
+#define   TILE_TYPE_MASK			GENMASK(4, 2)
+#define   YUV_EN				BIT(6)
+#define   COMP_2PLANE_EN			BIT(7)
+#define   PIX_SIZE_POS				8
+#define   PIX_SIZE_MASK				GENMASK(9, 8)
+#define   PIX_LUMA_UV_SWAP			BIT(10)
+#define   PIX_UV_SWAP				BIT(11)
+#define   B_COMP_SEL_POS			12
+#define   B_COMP_SEL_MASK			GENMASK(13, 12)
+#define   G_COMP_SEL_POS			14
+#define   G_COMP_SEL_MASK			GENMASK(15, 14)
+#define   R_COMP_SEL_POS			16
+#define   R_COMP_SEL_MASK			GENMASK(17, 16)
+#define   A_COMP_SEL_POS			18
+#define   A_COMP_SEL_MASK			GENMASK(19, 18)
+#define DCSS_DPR_FRAME_CTRL0			0x070
+#define   HFLIP_EN				BIT(0)
+#define   VFLIP_EN				BIT(1)
+#define   ROT_ENC_POS				2
+#define   ROT_ENC_MASK				GENMASK(3, 2)
+#define   ROT_FLIP_ORDER_EN			BIT(4)
+#define   PITCH_POS				16
+#define   PITCH_MASK				GENMASK(31, 16)
+#define DCSS_DPR_FRAME_1P_CTRL0			0x090
+#define DCSS_DPR_FRAME_1P_PIX_X_CTRL		0x0A0
+#define DCSS_DPR_FRAME_1P_PIX_Y_CTRL		0x0B0
+#define DCSS_DPR_FRAME_1P_BASE_ADDR		0x0C0
+#define DCSS_DPR_FRAME_2P_CTRL0			0x0E0
+#define DCSS_DPR_FRAME_2P_PIX_X_CTRL		0x0F0
+#define DCSS_DPR_FRAME_2P_PIX_Y_CTRL		0x100
+#define DCSS_DPR_FRAME_2P_BASE_ADDR		0x110
+#define DCSS_DPR_STATUS_CTRL0			0x130
+#define   STATUS_MUX_SEL_MASK			GENMASK(2, 0)
+#define   STATUS_SRC_SEL_POS			16
+#define   STATUS_SRC_SEL_MASK			GENMASK(18, 16)
+#define DCSS_DPR_STATUS_CTRL1			0x140
+#define DCSS_DPR_RTRAM_CTRL0			0x200
+#define   NUM_ROWS_ACTIVE			BIT(0)
+#define   THRES_HIGH_POS			1
+#define   THRES_HIGH_MASK			GENMASK(3, 1)
+#define   THRES_LOW_POS				4
+#define   THRES_LOW_MASK			GENMASK(6, 4)
+#define   ABORT_SEL				BIT(7)
+
+enum dcss_tile_type {
+	TILE_LINEAR = 0,
+	TILE_GPU_STANDARD,
+	TILE_GPU_SUPER,
+	TILE_VPU_YUV420,
+	TILE_VPU_VP9,
+};
+
+enum dcss_pix_size {
+	PIX_SIZE_8,
+	PIX_SIZE_16,
+	PIX_SIZE_32,
+};
+
+struct dcss_dpr_ch {
+	struct dcss_dpr *dpr;
+	void __iomem *base_reg;
+	u32 base_ofs;
+
+	struct drm_format_info format;
+	enum dcss_pix_size pix_size;
+	enum dcss_tile_type tile;
+	bool rtram_4line_en;
+	bool rtram_3buf_en;
+
+	u32 frame_ctrl;
+	u32 mode_ctrl;
+	u32 sys_ctrl;
+	u32 rtram_ctrl;
+
+	bool sys_ctrl_chgd;
+
+	int ch_num;
+	int irq;
+};
+
+struct dcss_dpr {
+	struct device *dev;
+	struct dcss_ctxld *ctxld;
+	u32  ctx_id;
+
+	struct dcss_dpr_ch ch[3];
+};
+
+static void dcss_dpr_write(struct dcss_dpr_ch *ch, u32 val, u32 ofs)
+{
+	struct dcss_dpr *dpr = ch->dpr;
+
+	dcss_ctxld_write(dpr->ctxld, dpr->ctx_id, val, ch->base_ofs + ofs);
+}
+
+static int dcss_dpr_ch_init_all(struct dcss_dpr *dpr, unsigned long dpr_base)
+{
+	struct dcss_dpr_ch *ch;
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		ch = &dpr->ch[i];
+
+		ch->base_ofs = dpr_base + i * 0x1000;
+
+		ch->base_reg = ioremap(ch->base_ofs, SZ_4K);
+		if (!ch->base_reg) {
+			dev_err(dpr->dev, "dpr: unable to remap ch %d base\n",
+				i);
+			return -ENOMEM;
+		}
+
+		ch->dpr = dpr;
+		ch->ch_num = i;
+
+		dcss_writel(0xff, ch->base_reg + DCSS_DPR_IRQ_MASK);
+	}
+
+	return 0;
+}
+
+int dcss_dpr_init(struct dcss_dev *dcss, unsigned long dpr_base)
+{
+	struct dcss_dpr *dpr;
+
+	dpr = kzalloc(sizeof(*dpr), GFP_KERNEL);
+	if (!dpr)
+		return -ENOMEM;
+
+	dcss->dpr = dpr;
+	dpr->dev = dcss->dev;
+	dpr->ctxld = dcss->ctxld;
+	dpr->ctx_id = CTX_SB_HP;
+
+	if (dcss_dpr_ch_init_all(dpr, dpr_base)) {
+		int i;
+
+		for (i = 0; i < 3; i++) {
+			if (dpr->ch[i].base_reg)
+				iounmap(dpr->ch[i].base_reg);
+		}
+
+		kfree(dpr);
+
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void dcss_dpr_exit(struct dcss_dpr *dpr)
+{
+	int ch_no;
+
+	/* stop DPR on all channels */
+	for (ch_no = 0; ch_no < 3; ch_no++) {
+		struct dcss_dpr_ch *ch = &dpr->ch[ch_no];
+
+		dcss_writel(0, ch->base_reg + DCSS_DPR_SYSTEM_CTRL0);
+
+		if (ch->base_reg)
+			iounmap(ch->base_reg);
+	}
+
+	kfree(dpr);
+}
+
+static u32 dcss_dpr_x_pix_wide_adjust(struct dcss_dpr_ch *ch, u32 pix_wide,
+				      u32 pix_format)
+{
+	u8 pix_in_64byte_map[3][5] = {
+		/* LIN, GPU_STD, GPU_SUP, VPU_YUV420, VPU_VP9 */
+		{   64,       8,       8,          8,     16}, /* PIX_SIZE_8  */
+		{   32,       8,       8,          8,      8}, /* PIX_SIZE_16 */
+		{   16,       4,       4,          8,      8}, /* PIX_SIZE_32 */
+	};
+	u32 offset;
+	u32 div_64byte_mod, pix_in_64byte;
+
+	pix_in_64byte = pix_in_64byte_map[ch->pix_size][ch->tile];
+
+	div_64byte_mod = pix_wide % pix_in_64byte;
+	offset = (div_64byte_mod == 0) ? 0 : (pix_in_64byte - div_64byte_mod);
+
+	return pix_wide + offset;
+}
+
+static u32 dcss_dpr_y_pix_high_adjust(struct dcss_dpr_ch *ch, u32 pix_high,
+				      u32 pix_format)
+{
+	u8 num_rows_buf = ch->rtram_4line_en ? 4 : 8;
+	u32 offset, pix_y_mod;
+
+	pix_y_mod = pix_high % num_rows_buf;
+	offset = pix_y_mod ? (num_rows_buf - pix_y_mod) : 0;
+
+	return pix_high + offset;
+}
+
+void dcss_dpr_set_res(struct dcss_dpr *dpr, int ch_num, u32 xres, u32 yres)
+{
+	struct dcss_dpr_ch *ch = &dpr->ch[ch_num];
+	u32 pix_format = ch->format.format;
+	u32 gap = DCSS_DPR_FRAME_2P_BASE_ADDR - DCSS_DPR_FRAME_1P_BASE_ADDR;
+	int plane, max_planes = 1;
+	u32 pix_x_wide, pix_y_high;
+
+	if (pix_format == DRM_FORMAT_NV12 ||
+	    pix_format == DRM_FORMAT_NV21)
+		max_planes = 2;
+
+	for (plane = 0; plane < max_planes; plane++) {
+		yres = plane == 1 ? yres >> 1 : yres;
+
+		pix_x_wide = dcss_dpr_x_pix_wide_adjust(ch, xres, pix_format);
+		pix_y_high = dcss_dpr_y_pix_high_adjust(ch, yres, pix_format);
+
+		dcss_dpr_write(ch, pix_x_wide,
+			       DCSS_DPR_FRAME_1P_PIX_X_CTRL + plane * gap);
+		dcss_dpr_write(ch, pix_y_high,
+			       DCSS_DPR_FRAME_1P_PIX_Y_CTRL + plane * gap);
+
+		dcss_dpr_write(ch, 2, DCSS_DPR_FRAME_1P_CTRL0 + plane * gap);
+	}
+}
+
+void dcss_dpr_addr_set(struct dcss_dpr *dpr, int ch_num, u32 luma_base_addr,
+		       u32 chroma_base_addr, u16 pitch)
+{
+	struct dcss_dpr_ch *ch = &dpr->ch[ch_num];
+
+	dcss_dpr_write(ch, luma_base_addr, DCSS_DPR_FRAME_1P_BASE_ADDR);
+
+	dcss_dpr_write(ch, chroma_base_addr, DCSS_DPR_FRAME_2P_BASE_ADDR);
+
+	ch->frame_ctrl &= ~PITCH_MASK;
+	ch->frame_ctrl |= (((u32)pitch << PITCH_POS) & PITCH_MASK);
+}
+
+static void dcss_dpr_argb_comp_sel(struct dcss_dpr_ch *ch, int a_sel, int r_sel,
+				   int g_sel, int b_sel)
+{
+	u32 sel;
+
+	sel = ((a_sel << A_COMP_SEL_POS) & A_COMP_SEL_MASK) |
+	      ((r_sel << R_COMP_SEL_POS) & R_COMP_SEL_MASK) |
+	      ((g_sel << G_COMP_SEL_POS) & G_COMP_SEL_MASK) |
+	      ((b_sel << B_COMP_SEL_POS) & B_COMP_SEL_MASK);
+
+	ch->mode_ctrl &= ~(A_COMP_SEL_MASK | R_COMP_SEL_MASK |
+			   G_COMP_SEL_MASK | B_COMP_SEL_MASK);
+	ch->mode_ctrl |= sel;
+}
+
+static void dcss_dpr_pix_size_set(struct dcss_dpr_ch *ch,
+				  const struct drm_format_info *format)
+{
+	u32 val;
+
+	switch (format->format) {
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+		val = PIX_SIZE_8;
+		break;
+
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+		val = PIX_SIZE_16;
+		break;
+
+	default:
+		val = PIX_SIZE_32;
+		break;
+	}
+
+	ch->pix_size = val;
+
+	ch->mode_ctrl &= ~PIX_SIZE_MASK;
+	ch->mode_ctrl |= ((val << PIX_SIZE_POS) & PIX_SIZE_MASK);
+}
+
+static void dcss_dpr_uv_swap(struct dcss_dpr_ch *ch, bool swap)
+{
+	ch->mode_ctrl &= ~PIX_UV_SWAP;
+	ch->mode_ctrl |= (swap ? PIX_UV_SWAP : 0);
+}
+
+static void dcss_dpr_y_uv_swap(struct dcss_dpr_ch *ch, bool swap)
+{
+	ch->mode_ctrl &= ~PIX_LUMA_UV_SWAP;
+	ch->mode_ctrl |= (swap ? PIX_LUMA_UV_SWAP : 0);
+}
+
+static void dcss_dpr_2plane_en(struct dcss_dpr_ch *ch, bool en)
+{
+	ch->mode_ctrl &= ~COMP_2PLANE_EN;
+	ch->mode_ctrl |= (en ? COMP_2PLANE_EN : 0);
+}
+
+static void dcss_dpr_yuv_en(struct dcss_dpr_ch *ch, bool en)
+{
+	ch->mode_ctrl &= ~YUV_EN;
+	ch->mode_ctrl |= (en ? YUV_EN : 0);
+}
+
+void dcss_dpr_enable(struct dcss_dpr *dpr, int ch_num, bool en)
+{
+	struct dcss_dpr_ch *ch = &dpr->ch[ch_num];
+	u32 sys_ctrl;
+
+	sys_ctrl = (en ? REPEAT_EN | RUN_EN : 0);
+
+	if (en) {
+		dcss_dpr_write(ch, ch->mode_ctrl, DCSS_DPR_MODE_CTRL0);
+		dcss_dpr_write(ch, ch->frame_ctrl, DCSS_DPR_FRAME_CTRL0);
+		dcss_dpr_write(ch, ch->rtram_ctrl, DCSS_DPR_RTRAM_CTRL0);
+	}
+
+	if (ch->sys_ctrl != sys_ctrl)
+		ch->sys_ctrl_chgd = true;
+
+	ch->sys_ctrl = sys_ctrl;
+}
+
+struct rgb_comp_sel {
+	u32 drm_format;
+	int a_sel;
+	int r_sel;
+	int g_sel;
+	int b_sel;
+};
+
+static struct rgb_comp_sel comp_sel_map[] = {
+	{DRM_FORMAT_ARGB8888, 3, 2, 1, 0},
+	{DRM_FORMAT_XRGB8888, 3, 2, 1, 0},
+	{DRM_FORMAT_ABGR8888, 3, 0, 1, 2},
+	{DRM_FORMAT_XBGR8888, 3, 0, 1, 2},
+	{DRM_FORMAT_RGBA8888, 0, 3, 2, 1},
+	{DRM_FORMAT_RGBX8888, 0, 3, 2, 1},
+	{DRM_FORMAT_BGRA8888, 0, 1, 2, 3},
+	{DRM_FORMAT_BGRX8888, 0, 1, 2, 3},
+};
+
+static int to_comp_sel(u32 pix_fmt, int *a_sel, int *r_sel, int *g_sel,
+		       int *b_sel)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(comp_sel_map); i++) {
+		if (comp_sel_map[i].drm_format == pix_fmt) {
+			*a_sel = comp_sel_map[i].a_sel;
+			*r_sel = comp_sel_map[i].r_sel;
+			*g_sel = comp_sel_map[i].g_sel;
+			*b_sel = comp_sel_map[i].b_sel;
+
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static void dcss_dpr_rtram_set(struct dcss_dpr_ch *ch, u32 pix_format)
+{
+	u32 val, mask;
+
+	switch (pix_format) {
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV12:
+		ch->rtram_3buf_en = true;
+		ch->rtram_4line_en = false;
+		break;
+
+	default:
+		ch->rtram_3buf_en = true;
+		ch->rtram_4line_en = true;
+		break;
+	}
+
+	val = (ch->rtram_4line_en ? RTR_4LINE_BUF_EN : 0);
+	val |= (ch->rtram_3buf_en ? RTR_3BUF_EN : 0);
+	mask = RTR_4LINE_BUF_EN | RTR_3BUF_EN;
+
+	ch->mode_ctrl &= ~mask;
+	ch->mode_ctrl |= (val & mask);
+
+	val = (ch->rtram_4line_en ? 0 : NUM_ROWS_ACTIVE);
+	val |= (3 << THRES_LOW_POS) & THRES_LOW_MASK;
+	val |= (4 << THRES_HIGH_POS) & THRES_HIGH_MASK;
+	mask = THRES_LOW_MASK | THRES_HIGH_MASK | NUM_ROWS_ACTIVE;
+
+	ch->rtram_ctrl &= ~mask;
+	ch->rtram_ctrl |= (val & mask);
+}
+
+static void dcss_dpr_setup_components(struct dcss_dpr_ch *ch,
+				      const struct drm_format_info *format)
+{
+	int a_sel, r_sel, g_sel, b_sel;
+	bool uv_swap, y_uv_swap;
+
+	switch (format->format) {
+	case DRM_FORMAT_YVYU:
+		uv_swap = true;
+		y_uv_swap = true;
+		break;
+
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV21:
+		uv_swap = true;
+		y_uv_swap = false;
+		break;
+
+	case DRM_FORMAT_YUYV:
+		uv_swap = false;
+		y_uv_swap = true;
+		break;
+
+	default:
+		uv_swap = false;
+		y_uv_swap = false;
+		break;
+	}
+
+	dcss_dpr_uv_swap(ch, uv_swap);
+
+	dcss_dpr_y_uv_swap(ch, y_uv_swap);
+
+	if (!format->is_yuv) {
+		if (!to_comp_sel(format->format, &a_sel, &r_sel,
+				 &g_sel, &b_sel)) {
+			dcss_dpr_argb_comp_sel(ch, a_sel, r_sel, g_sel, b_sel);
+		} else {
+			dcss_dpr_argb_comp_sel(ch, 3, 2, 1, 0);
+		}
+	} else {
+		dcss_dpr_argb_comp_sel(ch, 0, 0, 0, 0);
+	}
+}
+
+static void dcss_dpr_tile_set(struct dcss_dpr_ch *ch, uint64_t modifier)
+{
+	switch (ch->ch_num) {
+	case 0:
+		switch (modifier) {
+		case DRM_FORMAT_MOD_LINEAR:
+			ch->tile = TILE_LINEAR;
+			break;
+		case DRM_FORMAT_MOD_VIVANTE_TILED:
+			ch->tile = TILE_GPU_STANDARD;
+			break;
+		case DRM_FORMAT_MOD_VIVANTE_SUPER_TILED:
+			ch->tile = TILE_GPU_SUPER;
+			break;
+		default:
+			WARN_ON(1);
+			break;
+		}
+		break;
+	case 1:
+	case 2:
+		ch->tile = TILE_LINEAR;
+		break;
+	default:
+		WARN_ON(1);
+		return;
+	}
+
+	ch->mode_ctrl &= ~TILE_TYPE_MASK;
+	ch->mode_ctrl |= ((ch->tile << TILE_TYPE_POS) & TILE_TYPE_MASK);
+}
+
+void dcss_dpr_format_set(struct dcss_dpr *dpr, int ch_num,
+			 const struct drm_format_info *format, u64 modifier)
+{
+	struct dcss_dpr_ch *ch = &dpr->ch[ch_num];
+
+	ch->format = *format;
+
+	dcss_dpr_yuv_en(ch, format->is_yuv);
+
+	dcss_dpr_pix_size_set(ch, format);
+
+	dcss_dpr_setup_components(ch, format);
+
+	dcss_dpr_2plane_en(ch, format->num_planes == 2);
+
+	dcss_dpr_rtram_set(ch, format->format);
+
+	dcss_dpr_tile_set(ch, modifier);
+}
+
+/* This function will be called from interrupt context. */
+void dcss_dpr_write_sysctrl(struct dcss_dpr *dpr)
+{
+	int chnum;
+
+	dcss_ctxld_assert_locked(dpr->ctxld);
+
+	for (chnum = 0; chnum < 3; chnum++) {
+		struct dcss_dpr_ch *ch = &dpr->ch[chnum];
+
+		if (ch->sys_ctrl_chgd) {
+			dcss_ctxld_write_irqsafe(dpr->ctxld, dpr->ctx_id,
+						 ch->sys_ctrl,
+						 ch->base_ofs +
+						 DCSS_DPR_SYSTEM_CTRL0);
+			ch->sys_ctrl_chgd = false;
+		}
+	}
+}
+
+void dcss_dpr_set_rotation(struct dcss_dpr *dpr, int ch_num, u32 rotation)
+{
+	struct dcss_dpr_ch *ch = &dpr->ch[ch_num];
+
+	ch->frame_ctrl &= ~(HFLIP_EN | VFLIP_EN | ROT_ENC_MASK);
+
+	ch->frame_ctrl |= rotation & DRM_MODE_REFLECT_X ? HFLIP_EN : 0;
+	ch->frame_ctrl |= rotation & DRM_MODE_REFLECT_Y ? VFLIP_EN : 0;
+
+	if (rotation & DRM_MODE_ROTATE_90)
+		ch->frame_ctrl |= 1 << ROT_ENC_POS;
+	else if (rotation & DRM_MODE_ROTATE_180)
+		ch->frame_ctrl |= 2 << ROT_ENC_POS;
+	else if (rotation & DRM_MODE_ROTATE_270)
+		ch->frame_ctrl |= 3 << ROT_ENC_POS;
+}