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, 564 insertions, 0 deletions

diff --git a/drivers/video/backlight/ams369fg06.c b/drivers/video/backlight/ams369fg06.c
new file mode 100644
index 000000000..522dd8111
--- /dev/null
+++ b/drivers/video/backlight/ams369fg06.c
@@ -0,0 +1,564 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ams369fg06 AMOLED LCD panel driver.
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han  <jg1.han@samsung.com>
+ *
+ * Derived from drivers/video/s6e63m0.c
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/wait.h>
+
+#define SLEEPMSEC		0x1000
+#define ENDDEF			0x2000
+#define	DEFMASK			0xFF00
+#define COMMAND_ONLY		0xFE
+#define DATA_ONLY		0xFF
+
+#define MAX_GAMMA_LEVEL		5
+#define GAMMA_TABLE_COUNT	21
+
+#define MIN_BRIGHTNESS		0
+#define MAX_BRIGHTNESS		255
+#define DEFAULT_BRIGHTNESS	150
+
+struct ams369fg06 {
+	struct device			*dev;
+	struct spi_device		*spi;
+	unsigned int			power;
+	struct lcd_device		*ld;
+	struct backlight_device		*bd;
+	struct lcd_platform_data	*lcd_pd;
+};
+
+static const unsigned short seq_display_on[] = {
+	0x14, 0x03,
+	ENDDEF, 0x0000
+};
+
+static const unsigned short seq_display_off[] = {
+	0x14, 0x00,
+	ENDDEF, 0x0000
+};
+
+static const unsigned short seq_stand_by_on[] = {
+	0x1D, 0xA1,
+	SLEEPMSEC, 200,
+	ENDDEF, 0x0000
+};
+
+static const unsigned short seq_stand_by_off[] = {
+	0x1D, 0xA0,
+	SLEEPMSEC, 250,
+	ENDDEF, 0x0000
+};
+
+static const unsigned short seq_setting[] = {
+	0x31, 0x08,
+	0x32, 0x14,
+	0x30, 0x02,
+	0x27, 0x01,
+	0x12, 0x08,
+	0x13, 0x08,
+	0x15, 0x00,
+	0x16, 0x00,
+
+	0xef, 0xd0,
+	DATA_ONLY, 0xe8,
+
+	0x39, 0x44,
+	0x40, 0x00,
+	0x41, 0x3f,
+	0x42, 0x2a,
+	0x43, 0x27,
+	0x44, 0x27,
+	0x45, 0x1f,
+	0x46, 0x44,
+	0x50, 0x00,
+	0x51, 0x00,
+	0x52, 0x17,
+	0x53, 0x24,
+	0x54, 0x26,
+	0x55, 0x1f,
+	0x56, 0x43,
+	0x60, 0x00,
+	0x61, 0x3f,
+	0x62, 0x2a,
+	0x63, 0x25,
+	0x64, 0x24,
+	0x65, 0x1b,
+	0x66, 0x5c,
+
+	0x17, 0x22,
+	0x18, 0x33,
+	0x19, 0x03,
+	0x1a, 0x01,
+	0x22, 0xa4,
+	0x23, 0x00,
+	0x26, 0xa0,
+
+	0x1d, 0xa0,
+	SLEEPMSEC, 300,
+
+	0x14, 0x03,
+
+	ENDDEF, 0x0000
+};
+
+/* gamma value: 2.2 */
+static const unsigned int ams369fg06_22_250[] = {
+	0x00, 0x3f, 0x2a, 0x27, 0x27, 0x1f, 0x44,
+	0x00, 0x00, 0x17, 0x24, 0x26, 0x1f, 0x43,
+	0x00, 0x3f, 0x2a, 0x25, 0x24, 0x1b, 0x5c,
+};
+
+static const unsigned int ams369fg06_22_200[] = {
+	0x00, 0x3f, 0x28, 0x29, 0x27, 0x21, 0x3e,
+	0x00, 0x00, 0x10, 0x25, 0x27, 0x20, 0x3d,
+	0x00, 0x3f, 0x28, 0x27, 0x25, 0x1d, 0x53,
+};
+
+static const unsigned int ams369fg06_22_150[] = {
+	0x00, 0x3f, 0x2d, 0x29, 0x28, 0x23, 0x37,
+	0x00, 0x00, 0x0b, 0x25, 0x28, 0x22, 0x36,
+	0x00, 0x3f, 0x2b, 0x28, 0x26, 0x1f, 0x4a,
+};
+
+static const unsigned int ams369fg06_22_100[] = {
+	0x00, 0x3f, 0x30, 0x2a, 0x2b, 0x24, 0x2f,
+	0x00, 0x00, 0x00, 0x25, 0x29, 0x24, 0x2e,
+	0x00, 0x3f, 0x2f, 0x29, 0x29, 0x21, 0x3f,
+};
+
+static const unsigned int ams369fg06_22_50[] = {
+	0x00, 0x3f, 0x3c, 0x2c, 0x2d, 0x27, 0x24,
+	0x00, 0x00, 0x00, 0x22, 0x2a, 0x27, 0x23,
+	0x00, 0x3f, 0x3b, 0x2c, 0x2b, 0x24, 0x31,
+};
+
+struct ams369fg06_gamma {
+	unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
+};
+
+static struct ams369fg06_gamma gamma_table = {
+	.gamma_22_table[0] = (unsigned int *)&ams369fg06_22_50,
+	.gamma_22_table[1] = (unsigned int *)&ams369fg06_22_100,
+	.gamma_22_table[2] = (unsigned int *)&ams369fg06_22_150,
+	.gamma_22_table[3] = (unsigned int *)&ams369fg06_22_200,
+	.gamma_22_table[4] = (unsigned int *)&ams369fg06_22_250,
+};
+
+static int ams369fg06_spi_write_byte(struct ams369fg06 *lcd, int addr, int data)
+{
+	u16 buf[1];
+	struct spi_message msg;
+
+	struct spi_transfer xfer = {
+		.len		= 2,
+		.tx_buf		= buf,
+	};
+
+	buf[0] = (addr << 8) | data;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	return spi_sync(lcd->spi, &msg);
+}
+
+static int ams369fg06_spi_write(struct ams369fg06 *lcd, unsigned char address,
+	unsigned char command)
+{
+	int ret = 0;
+
+	if (address != DATA_ONLY)
+		ret = ams369fg06_spi_write_byte(lcd, 0x70, address);
+	if (command != COMMAND_ONLY)
+		ret = ams369fg06_spi_write_byte(lcd, 0x72, command);
+
+	return ret;
+}
+
+static int ams369fg06_panel_send_sequence(struct ams369fg06 *lcd,
+	const unsigned short *wbuf)
+{
+	int ret = 0, i = 0;
+
+	while ((wbuf[i] & DEFMASK) != ENDDEF) {
+		if ((wbuf[i] & DEFMASK) != SLEEPMSEC) {
+			ret = ams369fg06_spi_write(lcd, wbuf[i], wbuf[i+1]);
+			if (ret)
+				break;
+		} else {
+			msleep(wbuf[i+1]);
+		}
+		i += 2;
+	}
+
+	return ret;
+}
+
+static int _ams369fg06_gamma_ctl(struct ams369fg06 *lcd,
+	const unsigned int *gamma)
+{
+	unsigned int i = 0;
+	int ret = 0;
+
+	for (i = 0 ; i < GAMMA_TABLE_COUNT / 3; i++) {
+		ret = ams369fg06_spi_write(lcd, 0x40 + i, gamma[i]);
+		ret = ams369fg06_spi_write(lcd, 0x50 + i, gamma[i+7*1]);
+		ret = ams369fg06_spi_write(lcd, 0x60 + i, gamma[i+7*2]);
+		if (ret) {
+			dev_err(lcd->dev, "failed to set gamma table.\n");
+			goto gamma_err;
+		}
+	}
+
+gamma_err:
+	return ret;
+}
+
+static int ams369fg06_gamma_ctl(struct ams369fg06 *lcd, int brightness)
+{
+	int ret = 0;
+	int gamma = 0;
+
+	if ((brightness >= 0) && (brightness <= 50))
+		gamma = 0;
+	else if ((brightness > 50) && (brightness <= 100))
+		gamma = 1;
+	else if ((brightness > 100) && (brightness <= 150))
+		gamma = 2;
+	else if ((brightness > 150) && (brightness <= 200))
+		gamma = 3;
+	else if ((brightness > 200) && (brightness <= 255))
+		gamma = 4;
+
+	ret = _ams369fg06_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
+
+	return ret;
+}
+
+static int ams369fg06_ldi_init(struct ams369fg06 *lcd)
+{
+	int ret, i;
+	static const unsigned short *init_seq[] = {
+		seq_setting,
+		seq_stand_by_off,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+		ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int ams369fg06_ldi_enable(struct ams369fg06 *lcd)
+{
+	int ret, i;
+	static const unsigned short *init_seq[] = {
+		seq_stand_by_off,
+		seq_display_on,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+		ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int ams369fg06_ldi_disable(struct ams369fg06 *lcd)
+{
+	int ret, i;
+
+	static const unsigned short *init_seq[] = {
+		seq_display_off,
+		seq_stand_by_on,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+		ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int ams369fg06_power_is_on(int power)
+{
+	return power <= FB_BLANK_NORMAL;
+}
+
+static int ams369fg06_power_on(struct ams369fg06 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd;
+	struct backlight_device *bd;
+
+	pd = lcd->lcd_pd;
+	bd = lcd->bd;
+
+	if (pd->power_on) {
+		pd->power_on(lcd->ld, 1);
+		msleep(pd->power_on_delay);
+	}
+
+	if (!pd->reset) {
+		dev_err(lcd->dev, "reset is NULL.\n");
+		return -EINVAL;
+	}
+
+	pd->reset(lcd->ld);
+	msleep(pd->reset_delay);
+
+	ret = ams369fg06_ldi_init(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to initialize ldi.\n");
+		return ret;
+	}
+
+	ret = ams369fg06_ldi_enable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to enable ldi.\n");
+		return ret;
+	}
+
+	/* set brightness to current value after power on or resume. */
+	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);
+	if (ret) {
+		dev_err(lcd->dev, "lcd gamma setting failed.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ams369fg06_power_off(struct ams369fg06 *lcd)
+{
+	int ret;
+	struct lcd_platform_data *pd;
+
+	pd = lcd->lcd_pd;
+
+	ret = ams369fg06_ldi_disable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "lcd setting failed.\n");
+		return -EIO;
+	}
+
+	msleep(pd->power_off_delay);
+
+	if (pd->power_on)
+		pd->power_on(lcd->ld, 0);
+
+	return 0;
+}
+
+static int ams369fg06_power(struct ams369fg06 *lcd, int power)
+{
+	int ret = 0;
+
+	if (ams369fg06_power_is_on(power) &&
+		!ams369fg06_power_is_on(lcd->power))
+		ret = ams369fg06_power_on(lcd);
+	else if (!ams369fg06_power_is_on(power) &&
+		ams369fg06_power_is_on(lcd->power))
+		ret = ams369fg06_power_off(lcd);
+
+	if (!ret)
+		lcd->power = power;
+
+	return ret;
+}
+
+static int ams369fg06_get_power(struct lcd_device *ld)
+{
+	struct ams369fg06 *lcd = lcd_get_data(ld);
+
+	return lcd->power;
+}
+
+static int ams369fg06_set_power(struct lcd_device *ld, int power)
+{
+	struct ams369fg06 *lcd = lcd_get_data(ld);
+
+	if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+		power != FB_BLANK_NORMAL) {
+		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+		return -EINVAL;
+	}
+
+	return ams369fg06_power(lcd, power);
+}
+
+static int ams369fg06_set_brightness(struct backlight_device *bd)
+{
+	int ret = 0;
+	int brightness = bd->props.brightness;
+	struct ams369fg06 *lcd = bl_get_data(bd);
+
+	if (brightness < MIN_BRIGHTNESS ||
+		brightness > bd->props.max_brightness) {
+		dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",
+			MIN_BRIGHTNESS, MAX_BRIGHTNESS);
+		return -EINVAL;
+	}
+
+	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);
+	if (ret) {
+		dev_err(&bd->dev, "lcd brightness setting failed.\n");
+		return -EIO;
+	}
+
+	return ret;
+}
+
+static struct lcd_ops ams369fg06_lcd_ops = {
+	.get_power = ams369fg06_get_power,
+	.set_power = ams369fg06_set_power,
+};
+
+static const struct backlight_ops ams369fg06_backlight_ops = {
+	.update_status = ams369fg06_set_brightness,
+};
+
+static int ams369fg06_probe(struct spi_device *spi)
+{
+	int ret = 0;
+	struct ams369fg06 *lcd = NULL;
+	struct lcd_device *ld = NULL;
+	struct backlight_device *bd = NULL;
+	struct backlight_properties props;
+
+	lcd = devm_kzalloc(&spi->dev, sizeof(struct ams369fg06), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	/* ams369fg06 lcd panel uses 3-wire 16bits SPI Mode. */
+	spi->bits_per_word = 16;
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(&spi->dev, "spi setup failed.\n");
+		return ret;
+	}
+
+	lcd->spi = spi;
+	lcd->dev = &spi->dev;
+
+	lcd->lcd_pd = dev_get_platdata(&spi->dev);
+	if (!lcd->lcd_pd) {
+		dev_err(&spi->dev, "platform data is NULL\n");
+		return -EINVAL;
+	}
+
+	ld = devm_lcd_device_register(&spi->dev, "ams369fg06", &spi->dev, lcd,
+					&ams369fg06_lcd_ops);
+	if (IS_ERR(ld))
+		return PTR_ERR(ld);
+
+	lcd->ld = ld;
+
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.type = BACKLIGHT_RAW;
+	props.max_brightness = MAX_BRIGHTNESS;
+
+	bd = devm_backlight_device_register(&spi->dev, "ams369fg06-bl",
+					&spi->dev, lcd,
+					&ams369fg06_backlight_ops, &props);
+	if (IS_ERR(bd))
+		return PTR_ERR(bd);
+
+	bd->props.brightness = DEFAULT_BRIGHTNESS;
+	lcd->bd = bd;
+
+	if (!lcd->lcd_pd->lcd_enabled) {
+		/*
+		 * if lcd panel was off from bootloader then
+		 * current lcd status is powerdown and then
+		 * it enables lcd panel.
+		 */
+		lcd->power = FB_BLANK_POWERDOWN;
+
+		ams369fg06_power(lcd, FB_BLANK_UNBLANK);
+	} else {
+		lcd->power = FB_BLANK_UNBLANK;
+	}
+
+	spi_set_drvdata(spi, lcd);
+
+	dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n");
+
+	return 0;
+}
+
+static void ams369fg06_remove(struct spi_device *spi)
+{
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
+
+	ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ams369fg06_suspend(struct device *dev)
+{
+	struct ams369fg06 *lcd = dev_get_drvdata(dev);
+
+	dev_dbg(dev, "lcd->power = %d\n", lcd->power);
+
+	/*
+	 * when lcd panel is suspend, lcd panel becomes off
+	 * regardless of status.
+	 */
+	return ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static int ams369fg06_resume(struct device *dev)
+{
+	struct ams369fg06 *lcd = dev_get_drvdata(dev);
+
+	lcd->power = FB_BLANK_POWERDOWN;
+
+	return ams369fg06_power(lcd, FB_BLANK_UNBLANK);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(ams369fg06_pm_ops, ams369fg06_suspend,
+			ams369fg06_resume);
+
+static void ams369fg06_shutdown(struct spi_device *spi)
+{
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
+
+	ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver ams369fg06_driver = {
+	.driver = {
+		.name	= "ams369fg06",
+		.pm	= &ams369fg06_pm_ops,
+	},
+	.probe		= ams369fg06_probe,
+	.remove		= ams369fg06_remove,
+	.shutdown	= ams369fg06_shutdown,
+};
+
+module_spi_driver(ams369fg06_driver);
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("ams369fg06 LCD Driver");
+MODULE_LICENSE("GPL");