From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/clk/qcom/clk-rpm.c | 623 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 623 insertions(+) create mode 100644 drivers/clk/qcom/clk-rpm.c (limited to 'drivers/clk/qcom/clk-rpm.c') diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c new file mode 100644 index 000000000..b1be5b664 --- /dev/null +++ b/drivers/clk/qcom/clk-rpm.c @@ -0,0 +1,623 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2016, Linaro Limited + * Copyright (c) 2014, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define QCOM_RPM_MISC_CLK_TYPE 0x306b6c63 +#define QCOM_RPM_SCALING_ENABLE_ID 0x2 +#define QCOM_RPM_XO_MODE_ON 0x2 + +static const struct clk_parent_data gcc_pxo[] = { + { .fw_name = "pxo", .name = "pxo_board" }, +}; + +static const struct clk_parent_data gcc_cxo[] = { + { .fw_name = "cxo", .name = "cxo_board" }, +}; + +#define DEFINE_CLK_RPM(_name, r_id) \ + static struct clk_rpm clk_rpm_##_name##_a_clk; \ + static struct clk_rpm clk_rpm_##_name##_clk = { \ + .rpm_clk_id = (r_id), \ + .peer = &clk_rpm_##_name##_a_clk, \ + .rate = INT_MAX, \ + .hw.init = &(struct clk_init_data){ \ + .ops = &clk_rpm_ops, \ + .name = #_name "_clk", \ + .parent_data = gcc_pxo, \ + .num_parents = ARRAY_SIZE(gcc_pxo), \ + }, \ + }; \ + static struct clk_rpm clk_rpm_##_name##_a_clk = { \ + .rpm_clk_id = (r_id), \ + .peer = &clk_rpm_##_name##_clk, \ + .active_only = true, \ + .rate = INT_MAX, \ + .hw.init = &(struct clk_init_data){ \ + .ops = &clk_rpm_ops, \ + .name = #_name "_a_clk", \ + .parent_data = gcc_pxo, \ + .num_parents = ARRAY_SIZE(gcc_pxo), \ + }, \ + } + +#define DEFINE_CLK_RPM_XO_BUFFER(_name, offset) \ + static struct clk_rpm clk_rpm_##_name##_clk = { \ + .rpm_clk_id = QCOM_RPM_CXO_BUFFERS, \ + .xo_offset = (offset), \ + .hw.init = &(struct clk_init_data){ \ + .ops = &clk_rpm_xo_ops, \ + .name = #_name "_clk", \ + .parent_data = gcc_cxo, \ + .num_parents = ARRAY_SIZE(gcc_cxo), \ + }, \ + } + +#define DEFINE_CLK_RPM_FIXED(_name, r_id, r) \ + static struct clk_rpm clk_rpm_##_name##_clk = { \ + .rpm_clk_id = (r_id), \ + .rate = (r), \ + .hw.init = &(struct clk_init_data){ \ + .ops = &clk_rpm_fixed_ops, \ + .name = #_name "_clk", \ + .parent_data = gcc_pxo, \ + .num_parents = ARRAY_SIZE(gcc_pxo), \ + }, \ + } + +#define to_clk_rpm(_hw) container_of(_hw, struct clk_rpm, hw) + +struct rpm_cc; + +struct clk_rpm { + const int rpm_clk_id; + const int xo_offset; + const bool active_only; + unsigned long rate; + bool enabled; + bool branch; + struct clk_rpm *peer; + struct clk_hw hw; + struct qcom_rpm *rpm; + struct rpm_cc *rpm_cc; +}; + +struct rpm_cc { + struct qcom_rpm *rpm; + struct clk_rpm **clks; + size_t num_clks; + u32 xo_buffer_value; + struct mutex xo_lock; +}; + +struct rpm_clk_desc { + struct clk_rpm **clks; + size_t num_clks; +}; + +static DEFINE_MUTEX(rpm_clk_lock); + +static int clk_rpm_handoff(struct clk_rpm *r) +{ + int ret; + u32 value = INT_MAX; + + /* + * The vendor tree simply reads the status for this + * RPM clock. + */ + if (r->rpm_clk_id == QCOM_RPM_PLL_4 || + r->rpm_clk_id == QCOM_RPM_CXO_BUFFERS) + return 0; + + ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, + r->rpm_clk_id, &value, 1); + if (ret) + return ret; + ret = qcom_rpm_write(r->rpm, QCOM_RPM_SLEEP_STATE, + r->rpm_clk_id, &value, 1); + if (ret) + return ret; + + return 0; +} + +static int clk_rpm_set_rate_active(struct clk_rpm *r, unsigned long rate) +{ + u32 value = DIV_ROUND_UP(rate, 1000); /* to kHz */ + + return qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, + r->rpm_clk_id, &value, 1); +} + +static int clk_rpm_set_rate_sleep(struct clk_rpm *r, unsigned long rate) +{ + u32 value = DIV_ROUND_UP(rate, 1000); /* to kHz */ + + return qcom_rpm_write(r->rpm, QCOM_RPM_SLEEP_STATE, + r->rpm_clk_id, &value, 1); +} + +static void to_active_sleep(struct clk_rpm *r, unsigned long rate, + unsigned long *active, unsigned long *sleep) +{ + *active = rate; + + /* + * Active-only clocks don't care what the rate is during sleep. So, + * they vote for zero. + */ + if (r->active_only) + *sleep = 0; + else + *sleep = *active; +} + +static int clk_rpm_prepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + struct clk_rpm *peer = r->peer; + unsigned long this_rate = 0, this_sleep_rate = 0; + unsigned long peer_rate = 0, peer_sleep_rate = 0; + unsigned long active_rate, sleep_rate; + int ret = 0; + + mutex_lock(&rpm_clk_lock); + + /* Don't send requests to the RPM if the rate has not been set. */ + if (!r->rate) + goto out; + + to_active_sleep(r, r->rate, &this_rate, &this_sleep_rate); + + /* Take peer clock's rate into account only if it's enabled. */ + if (peer->enabled) + to_active_sleep(peer, peer->rate, + &peer_rate, &peer_sleep_rate); + + active_rate = max(this_rate, peer_rate); + + if (r->branch) + active_rate = !!active_rate; + + ret = clk_rpm_set_rate_active(r, active_rate); + if (ret) + goto out; + + sleep_rate = max(this_sleep_rate, peer_sleep_rate); + if (r->branch) + sleep_rate = !!sleep_rate; + + ret = clk_rpm_set_rate_sleep(r, sleep_rate); + if (ret) + /* Undo the active set vote and restore it */ + ret = clk_rpm_set_rate_active(r, peer_rate); + +out: + if (!ret) + r->enabled = true; + + mutex_unlock(&rpm_clk_lock); + + return ret; +} + +static void clk_rpm_unprepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + struct clk_rpm *peer = r->peer; + unsigned long peer_rate = 0, peer_sleep_rate = 0; + unsigned long active_rate, sleep_rate; + int ret; + + mutex_lock(&rpm_clk_lock); + + if (!r->rate) + goto out; + + /* Take peer clock's rate into account only if it's enabled. */ + if (peer->enabled) + to_active_sleep(peer, peer->rate, &peer_rate, + &peer_sleep_rate); + + active_rate = r->branch ? !!peer_rate : peer_rate; + ret = clk_rpm_set_rate_active(r, active_rate); + if (ret) + goto out; + + sleep_rate = r->branch ? !!peer_sleep_rate : peer_sleep_rate; + ret = clk_rpm_set_rate_sleep(r, sleep_rate); + if (ret) + goto out; + + r->enabled = false; + +out: + mutex_unlock(&rpm_clk_lock); +} + +static int clk_rpm_xo_prepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + struct rpm_cc *rcc = r->rpm_cc; + int ret, clk_id = r->rpm_clk_id; + u32 value; + + mutex_lock(&rcc->xo_lock); + + value = rcc->xo_buffer_value | (QCOM_RPM_XO_MODE_ON << r->xo_offset); + ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, clk_id, &value, 1); + if (!ret) { + r->enabled = true; + rcc->xo_buffer_value = value; + } + + mutex_unlock(&rcc->xo_lock); + + return ret; +} + +static void clk_rpm_xo_unprepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + struct rpm_cc *rcc = r->rpm_cc; + int ret, clk_id = r->rpm_clk_id; + u32 value; + + mutex_lock(&rcc->xo_lock); + + value = rcc->xo_buffer_value & ~(QCOM_RPM_XO_MODE_ON << r->xo_offset); + ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, clk_id, &value, 1); + if (!ret) { + r->enabled = false; + rcc->xo_buffer_value = value; + } + + mutex_unlock(&rcc->xo_lock); +} + +static int clk_rpm_fixed_prepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + u32 value = 1; + int ret; + + ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, + r->rpm_clk_id, &value, 1); + if (!ret) + r->enabled = true; + + return ret; +} + +static void clk_rpm_fixed_unprepare(struct clk_hw *hw) +{ + struct clk_rpm *r = to_clk_rpm(hw); + u32 value = 0; + int ret; + + ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, + r->rpm_clk_id, &value, 1); + if (!ret) + r->enabled = false; +} + +static int clk_rpm_set_rate(struct clk_hw *hw, + unsigned long rate, unsigned long parent_rate) +{ + struct clk_rpm *r = to_clk_rpm(hw); + struct clk_rpm *peer = r->peer; + unsigned long active_rate, sleep_rate; + unsigned long this_rate = 0, this_sleep_rate = 0; + unsigned long peer_rate = 0, peer_sleep_rate = 0; + int ret = 0; + + mutex_lock(&rpm_clk_lock); + + if (!r->enabled) + goto out; + + to_active_sleep(r, rate, &this_rate, &this_sleep_rate); + + /* Take peer clock's rate into account only if it's enabled. */ + if (peer->enabled) + to_active_sleep(peer, peer->rate, + &peer_rate, &peer_sleep_rate); + + active_rate = max(this_rate, peer_rate); + ret = clk_rpm_set_rate_active(r, active_rate); + if (ret) + goto out; + + sleep_rate = max(this_sleep_rate, peer_sleep_rate); + ret = clk_rpm_set_rate_sleep(r, sleep_rate); + if (ret) + goto out; + + r->rate = rate; + +out: + mutex_unlock(&rpm_clk_lock); + + return ret; +} + +static long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + /* + * RPM handles rate rounding and we don't have a way to + * know what the rate will be, so just return whatever + * rate is requested. + */ + return rate; +} + +static unsigned long clk_rpm_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_rpm *r = to_clk_rpm(hw); + + /* + * RPM handles rate rounding and we don't have a way to + * know what the rate will be, so just return whatever + * rate was set. + */ + return r->rate; +} + +static const struct clk_ops clk_rpm_xo_ops = { + .prepare = clk_rpm_xo_prepare, + .unprepare = clk_rpm_xo_unprepare, +}; + +static const struct clk_ops clk_rpm_fixed_ops = { + .prepare = clk_rpm_fixed_prepare, + .unprepare = clk_rpm_fixed_unprepare, + .round_rate = clk_rpm_round_rate, + .recalc_rate = clk_rpm_recalc_rate, +}; + +static const struct clk_ops clk_rpm_ops = { + .prepare = clk_rpm_prepare, + .unprepare = clk_rpm_unprepare, + .set_rate = clk_rpm_set_rate, + .round_rate = clk_rpm_round_rate, + .recalc_rate = clk_rpm_recalc_rate, +}; + +DEFINE_CLK_RPM(afab, QCOM_RPM_APPS_FABRIC_CLK); +DEFINE_CLK_RPM(sfab, QCOM_RPM_SYS_FABRIC_CLK); +DEFINE_CLK_RPM(mmfab, QCOM_RPM_MM_FABRIC_CLK); +DEFINE_CLK_RPM(daytona, QCOM_RPM_DAYTONA_FABRIC_CLK); +DEFINE_CLK_RPM(sfpb, QCOM_RPM_SFPB_CLK); +DEFINE_CLK_RPM(cfpb, QCOM_RPM_CFPB_CLK); +DEFINE_CLK_RPM(mmfpb, QCOM_RPM_MMFPB_CLK); +DEFINE_CLK_RPM(smi, QCOM_RPM_SMI_CLK); +DEFINE_CLK_RPM(ebi1, QCOM_RPM_EBI1_CLK); + +DEFINE_CLK_RPM(qdss, QCOM_RPM_QDSS_CLK); +DEFINE_CLK_RPM(nss_fabric_0, QCOM_RPM_NSS_FABRIC_0_CLK); +DEFINE_CLK_RPM(nss_fabric_1, QCOM_RPM_NSS_FABRIC_1_CLK); + +DEFINE_CLK_RPM_FIXED(pll4, QCOM_RPM_PLL_4, 540672000); + +DEFINE_CLK_RPM_XO_BUFFER(xo_d0, 0); +DEFINE_CLK_RPM_XO_BUFFER(xo_d1, 8); +DEFINE_CLK_RPM_XO_BUFFER(xo_a0, 16); +DEFINE_CLK_RPM_XO_BUFFER(xo_a1, 24); +DEFINE_CLK_RPM_XO_BUFFER(xo_a2, 28); + +static struct clk_rpm *msm8660_clks[] = { + [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk, + [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk, + [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk, + [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk, + [RPM_MM_FABRIC_CLK] = &clk_rpm_mmfab_clk, + [RPM_MM_FABRIC_A_CLK] = &clk_rpm_mmfab_a_clk, + [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk, + [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk, + [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk, + [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk, + [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk, + [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk, + [RPM_MMFPB_CLK] = &clk_rpm_mmfpb_clk, + [RPM_MMFPB_A_CLK] = &clk_rpm_mmfpb_a_clk, + [RPM_SMI_CLK] = &clk_rpm_smi_clk, + [RPM_SMI_A_CLK] = &clk_rpm_smi_a_clk, + [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk, + [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk, + [RPM_PLL4_CLK] = &clk_rpm_pll4_clk, +}; + +static const struct rpm_clk_desc rpm_clk_msm8660 = { + .clks = msm8660_clks, + .num_clks = ARRAY_SIZE(msm8660_clks), +}; + +static struct clk_rpm *apq8064_clks[] = { + [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk, + [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk, + [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk, + [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk, + [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk, + [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk, + [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk, + [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk, + [RPM_MM_FABRIC_CLK] = &clk_rpm_mmfab_clk, + [RPM_MM_FABRIC_A_CLK] = &clk_rpm_mmfab_a_clk, + [RPM_MMFPB_CLK] = &clk_rpm_mmfpb_clk, + [RPM_MMFPB_A_CLK] = &clk_rpm_mmfpb_a_clk, + [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk, + [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk, + [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk, + [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk, + [RPM_QDSS_CLK] = &clk_rpm_qdss_clk, + [RPM_QDSS_A_CLK] = &clk_rpm_qdss_a_clk, + [RPM_XO_D0] = &clk_rpm_xo_d0_clk, + [RPM_XO_D1] = &clk_rpm_xo_d1_clk, + [RPM_XO_A0] = &clk_rpm_xo_a0_clk, + [RPM_XO_A1] = &clk_rpm_xo_a1_clk, + [RPM_XO_A2] = &clk_rpm_xo_a2_clk, +}; + +static const struct rpm_clk_desc rpm_clk_apq8064 = { + .clks = apq8064_clks, + .num_clks = ARRAY_SIZE(apq8064_clks), +}; + +static struct clk_rpm *ipq806x_clks[] = { + [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk, + [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk, + [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk, + [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk, + [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk, + [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk, + [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk, + [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk, + [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk, + [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk, + [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk, + [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk, + [RPM_NSS_FABRIC_0_CLK] = &clk_rpm_nss_fabric_0_clk, + [RPM_NSS_FABRIC_0_A_CLK] = &clk_rpm_nss_fabric_0_a_clk, + [RPM_NSS_FABRIC_1_CLK] = &clk_rpm_nss_fabric_1_clk, + [RPM_NSS_FABRIC_1_A_CLK] = &clk_rpm_nss_fabric_1_a_clk, +}; + +static const struct rpm_clk_desc rpm_clk_ipq806x = { + .clks = ipq806x_clks, + .num_clks = ARRAY_SIZE(ipq806x_clks), +}; + +static const struct of_device_id rpm_clk_match_table[] = { + { .compatible = "qcom,rpmcc-msm8660", .data = &rpm_clk_msm8660 }, + { .compatible = "qcom,rpmcc-apq8060", .data = &rpm_clk_msm8660 }, + { .compatible = "qcom,rpmcc-apq8064", .data = &rpm_clk_apq8064 }, + { .compatible = "qcom,rpmcc-ipq806x", .data = &rpm_clk_ipq806x }, + { } +}; +MODULE_DEVICE_TABLE(of, rpm_clk_match_table); + +static struct clk_hw *qcom_rpm_clk_hw_get(struct of_phandle_args *clkspec, + void *data) +{ + struct rpm_cc *rcc = data; + unsigned int idx = clkspec->args[0]; + + if (idx >= rcc->num_clks) { + pr_err("%s: invalid index %u\n", __func__, idx); + return ERR_PTR(-EINVAL); + } + + return rcc->clks[idx] ? &rcc->clks[idx]->hw : ERR_PTR(-ENOENT); +} + +static int rpm_clk_probe(struct platform_device *pdev) +{ + struct rpm_cc *rcc; + int ret; + size_t num_clks, i; + struct qcom_rpm *rpm; + struct clk_rpm **rpm_clks; + const struct rpm_clk_desc *desc; + + rpm = dev_get_drvdata(pdev->dev.parent); + if (!rpm) { + dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n"); + return -ENODEV; + } + + desc = of_device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + rpm_clks = desc->clks; + num_clks = desc->num_clks; + + rcc = devm_kzalloc(&pdev->dev, sizeof(*rcc), GFP_KERNEL); + if (!rcc) + return -ENOMEM; + + rcc->clks = rpm_clks; + rcc->num_clks = num_clks; + mutex_init(&rcc->xo_lock); + + for (i = 0; i < num_clks; i++) { + if (!rpm_clks[i]) + continue; + + rpm_clks[i]->rpm = rpm; + rpm_clks[i]->rpm_cc = rcc; + + ret = clk_rpm_handoff(rpm_clks[i]); + if (ret) + goto err; + } + + for (i = 0; i < num_clks; i++) { + if (!rpm_clks[i]) + continue; + + ret = devm_clk_hw_register(&pdev->dev, &rpm_clks[i]->hw); + if (ret) + goto err; + } + + ret = of_clk_add_hw_provider(pdev->dev.of_node, qcom_rpm_clk_hw_get, + rcc); + if (ret) + goto err; + + return 0; +err: + dev_err(&pdev->dev, "Error registering RPM Clock driver (%d)\n", ret); + return ret; +} + +static int rpm_clk_remove(struct platform_device *pdev) +{ + of_clk_del_provider(pdev->dev.of_node); + return 0; +} + +static struct platform_driver rpm_clk_driver = { + .driver = { + .name = "qcom-clk-rpm", + .of_match_table = rpm_clk_match_table, + }, + .probe = rpm_clk_probe, + .remove = rpm_clk_remove, +}; + +static int __init rpm_clk_init(void) +{ + return platform_driver_register(&rpm_clk_driver); +} +core_initcall(rpm_clk_init); + +static void __exit rpm_clk_exit(void) +{ + platform_driver_unregister(&rpm_clk_driver); +} +module_exit(rpm_clk_exit); + +MODULE_DESCRIPTION("Qualcomm RPM Clock Controller Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:qcom-clk-rpm"); -- cgit v1.2.3