Re: [PATCH 2/2] clk: qcom: gcc-qdu1000: Update GCC clocks and add support for GDSCs

From: Konrad Dybcio
Date: Fri Jun 16 2023 - 07:22:43 EST

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On 16.06.2023 12:49, Imran Shaik wrote:
> Update the GCC clocks and add support for GDSCs for QDU1000 and
> QRU1000 SoCs. While at it, fix the PCIe pipe clock handling and
> add support for v2 variant.
Too much for a single change. If somebody wants to bisect an issue, they
would have to edit chunks of this patch.

Konrad
>
> Signed-off-by: Taniya Das <quic_tdas@xxxxxxxxxxx>
> Signed-off-by: Imran Shaik <quic_imrashai@xxxxxxxxxxx>
> ---
> drivers/clk/qcom/gcc-qdu1000.c | 162 ++++++++++++++++++++++-----------
> 1 file changed, 110 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/clk/qcom/gcc-qdu1000.c b/drivers/clk/qcom/gcc-qdu1000.c
> index 5051769ad90c..5d8125c0eacc 100644
> --- a/drivers/clk/qcom/gcc-qdu1000.c
> +++ b/drivers/clk/qcom/gcc-qdu1000.c
> @@ -1,6 +1,6 @@
> // SPDX-License-Identifier: GPL-2.0-only
> /*
> - * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
> */
>
> #include <linux/clk-provider.h>
> @@ -17,6 +17,7 @@
> #include "clk-regmap-divider.h"
> #include "clk-regmap-mux.h"
> #include "clk-regmap-phy-mux.h"
> +#include "gdsc.h"
> #include "reset.h"
>
> enum {
> @@ -370,16 +371,6 @@ static const struct clk_parent_data gcc_parent_data_6[] = {
> { .index = DT_TCXO_IDX },
> };
>
> -static const struct parent_map gcc_parent_map_7[] = {
> - { P_PCIE_0_PIPE_CLK, 0 },
> - { P_BI_TCXO, 2 },
> -};
> -
> -static const struct clk_parent_data gcc_parent_data_7[] = {
> - { .index = DT_PCIE_0_PIPE_CLK_IDX },
> - { .index = DT_TCXO_IDX },
> -};
> -
> static const struct parent_map gcc_parent_map_8[] = {
> { P_BI_TCXO, 0 },
> { P_GCC_GPLL0_OUT_MAIN, 1 },
> @@ -439,16 +430,15 @@ static struct clk_regmap_mux gcc_pcie_0_phy_aux_clk_src = {
> },
> };
>
> -static struct clk_regmap_mux gcc_pcie_0_pipe_clk_src = {
> +static struct clk_regmap_phy_mux gcc_pcie_0_pipe_clk_src = {
> .reg = 0x9d064,
> - .shift = 0,
> - .width = 2,
> - .parent_map = gcc_parent_map_7,
> .clkr = {
> .hw.init = &(const struct clk_init_data) {
> .name = "gcc_pcie_0_pipe_clk_src",
> - .parent_data = gcc_parent_data_7,
> - .num_parents = ARRAY_SIZE(gcc_parent_data_7),
> + .parent_data = &(const struct clk_parent_data){
> + .index = DT_PCIE_0_PIPE_CLK_IDX,
> + },
> + .num_parents = 1,
> .ops = &clk_regmap_phy_mux_ops,
> },
> },
> @@ -485,7 +475,7 @@ static struct clk_rcg2 gcc_aggre_noc_ecpri_dma_clk_src = {
> .name = "gcc_aggre_noc_ecpri_dma_clk_src",
> .parent_data = gcc_parent_data_4,
> .num_parents = ARRAY_SIZE(gcc_parent_data_4),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -505,7 +495,7 @@ static struct clk_rcg2 gcc_aggre_noc_ecpri_gsi_clk_src = {
> .name = "gcc_aggre_noc_ecpri_gsi_clk_src",
> .parent_data = gcc_parent_data_5,
> .num_parents = ARRAY_SIZE(gcc_parent_data_5),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -524,7 +514,7 @@ static struct clk_rcg2 gcc_gp1_clk_src = {
> .name = "gcc_gp1_clk_src",
> .parent_data = gcc_parent_data_1,
> .num_parents = ARRAY_SIZE(gcc_parent_data_1),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -538,7 +528,7 @@ static struct clk_rcg2 gcc_gp2_clk_src = {
> .name = "gcc_gp2_clk_src",
> .parent_data = gcc_parent_data_1,
> .num_parents = ARRAY_SIZE(gcc_parent_data_1),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -552,7 +542,7 @@ static struct clk_rcg2 gcc_gp3_clk_src = {
> .name = "gcc_gp3_clk_src",
> .parent_data = gcc_parent_data_1,
> .num_parents = ARRAY_SIZE(gcc_parent_data_1),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -571,7 +561,7 @@ static struct clk_rcg2 gcc_pcie_0_aux_clk_src = {
> .name = "gcc_pcie_0_aux_clk_src",
> .parent_data = gcc_parent_data_3,
> .num_parents = ARRAY_SIZE(gcc_parent_data_3),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -591,7 +581,7 @@ static struct clk_rcg2 gcc_pcie_0_phy_rchng_clk_src = {
> .name = "gcc_pcie_0_phy_rchng_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -610,7 +600,7 @@ static struct clk_rcg2 gcc_pdm2_clk_src = {
> .name = "gcc_pdm2_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -632,7 +622,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s0_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s0_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s0_clk_src = {
> @@ -648,7 +638,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s1_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s1_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s1_clk_src = {
> @@ -664,7 +654,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s2_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s2_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s2_clk_src = {
> @@ -680,7 +670,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s3_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s3_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s3_clk_src = {
> @@ -696,7 +686,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s4_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s4_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s4_clk_src = {
> @@ -717,7 +707,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s5_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s5_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s5_clk_src = {
> @@ -733,7 +723,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s6_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s6_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s6_clk_src = {
> @@ -749,7 +739,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s7_clk_src_init = {
> .name = "gcc_qupv3_wrap0_s7_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap0_s7_clk_src = {
> @@ -765,7 +755,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s0_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s0_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s0_clk_src = {
> @@ -781,7 +771,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s1_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s1_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s1_clk_src = {
> @@ -797,7 +787,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s2_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s2_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s2_clk_src = {
> @@ -813,7 +803,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s3_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s3_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s3_clk_src = {
> @@ -829,7 +819,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s4_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s4_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s4_clk_src = {
> @@ -845,7 +835,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s5_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s5_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s5_clk_src = {
> @@ -861,7 +851,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s6_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s6_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s6_clk_src = {
> @@ -877,7 +867,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s7_clk_src_init = {
> .name = "gcc_qupv3_wrap1_s7_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> };
>
> static struct clk_rcg2 gcc_qupv3_wrap1_s7_clk_src = {
> @@ -913,7 +903,7 @@ static struct clk_rcg2 gcc_sdcc5_apps_clk_src = {
> .name = "gcc_sdcc5_apps_clk_src",
> .parent_data = gcc_parent_data_8,
> .num_parents = ARRAY_SIZE(gcc_parent_data_8),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_floor_ops,
> },
> };
>
> @@ -932,7 +922,7 @@ static struct clk_rcg2 gcc_sdcc5_ice_core_clk_src = {
> .name = "gcc_sdcc5_ice_core_clk_src",
> .parent_data = gcc_parent_data_2,
> .num_parents = ARRAY_SIZE(gcc_parent_data_2),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_floor_ops,
> },
> };
>
> @@ -946,7 +936,7 @@ static struct clk_rcg2 gcc_sm_bus_xo_clk_src = {
> .name = "gcc_sm_bus_xo_clk_src",
> .parent_data = gcc_parent_data_2,
> .num_parents = ARRAY_SIZE(gcc_parent_data_2),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -965,7 +955,7 @@ static struct clk_rcg2 gcc_tsc_clk_src = {
> .name = "gcc_tsc_clk_src",
> .parent_data = gcc_parent_data_9,
> .num_parents = ARRAY_SIZE(gcc_parent_data_9),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -985,7 +975,7 @@ static struct clk_rcg2 gcc_usb30_prim_master_clk_src = {
> .name = "gcc_usb30_prim_master_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -999,7 +989,7 @@ static struct clk_rcg2 gcc_usb30_prim_mock_utmi_clk_src = {
> .name = "gcc_usb30_prim_mock_utmi_clk_src",
> .parent_data = gcc_parent_data_0,
> .num_parents = ARRAY_SIZE(gcc_parent_data_0),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -1013,7 +1003,7 @@ static struct clk_rcg2 gcc_usb3_prim_phy_aux_clk_src = {
> .name = "gcc_usb3_prim_phy_aux_clk_src",
> .parent_data = gcc_parent_data_3,
> .num_parents = ARRAY_SIZE(gcc_parent_data_3),
> - .ops = &clk_rcg2_ops,
> + .ops = &clk_rcg2_shared_ops,
> },
> };
>
> @@ -1142,6 +1132,26 @@ static struct clk_branch gcc_ddrss_ecpri_dma_clk = {
> },
> };
>
> +static struct clk_branch gcc_ddrss_ecpri_gsi_clk = {
> + .halt_reg = 0x54298,
> + .halt_check = BRANCH_HALT_VOTED,
> + .hwcg_reg = 0x54298,
> + .hwcg_bit = 1,
> + .clkr = {
> + .enable_reg = 0x54298,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "gcc_ddrss_ecpri_gsi_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &gcc_aggre_noc_ecpri_gsi_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_aon_ops,
> + },
> + },
> +};
> +
> static struct clk_branch gcc_ecpri_ahb_clk = {
> .halt_reg = 0x3a008,
> .halt_check = BRANCH_HALT_VOTED,
> @@ -1458,14 +1468,13 @@ static struct clk_branch gcc_pcie_0_cfg_ahb_clk = {
>
> static struct clk_branch gcc_pcie_0_clkref_en = {
> .halt_reg = 0x9c004,
> - .halt_bit = 31,
> .halt_check = BRANCH_HALT_ENABLE,
> .clkr = {
> .enable_reg = 0x9c004,
> .enable_mask = BIT(0),
> .hw.init = &(const struct clk_init_data) {
> .name = "gcc_pcie_0_clkref_en",
> - .ops = &clk_branch_ops,
> + .ops = &clk_branch2_ops,
> },
> },
> };
> @@ -2285,14 +2294,13 @@ static struct clk_branch gcc_tsc_etu_clk = {
>
> static struct clk_branch gcc_usb2_clkref_en = {
> .halt_reg = 0x9c008,
> - .halt_bit = 31,
> .halt_check = BRANCH_HALT_ENABLE,
> .clkr = {
> .enable_reg = 0x9c008,
> .enable_mask = BIT(0),
> .hw.init = &(const struct clk_init_data) {
> .name = "gcc_usb2_clkref_en",
> - .ops = &clk_branch_ops,
> + .ops = &clk_branch2_ops,
> },
> },
> };
> @@ -2402,6 +2410,39 @@ static struct clk_branch gcc_usb3_prim_phy_pipe_clk = {
> },
> };
>
> +static struct gdsc pcie_0_gdsc = {
> + .gdscr = 0x9d004,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0xf,
> + .pd = {
> + .name = "gcc_pcie_0_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> +};
> +
> +static struct gdsc pcie_0_phy_gdsc = {
> + .gdscr = 0x7c004,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0x2,
> + .pd = {
> + .name = "gcc_pcie_0_phy_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> +};
> +
> +static struct gdsc usb30_prim_gdsc = {
> + .gdscr = 0x49004,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0xf,
> + .pd = {
> + .name = "gcc_usb30_prim_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> +};
> +
> static struct clk_regmap *gcc_qdu1000_clocks[] = {
> [GCC_AGGRE_NOC_ECPRI_DMA_CLK] = &gcc_aggre_noc_ecpri_dma_clk.clkr,
> [GCC_AGGRE_NOC_ECPRI_DMA_CLK_SRC] = &gcc_aggre_noc_ecpri_dma_clk_src.clkr,
> @@ -2534,6 +2575,14 @@ static struct clk_regmap *gcc_qdu1000_clocks[] = {
> [GCC_AGGRE_NOC_ECPRI_GSI_CLK] = &gcc_aggre_noc_ecpri_gsi_clk.clkr,
> [GCC_PCIE_0_PHY_AUX_CLK_SRC] = &gcc_pcie_0_phy_aux_clk_src.clkr,
> [GCC_PCIE_0_PIPE_CLK_SRC] = &gcc_pcie_0_pipe_clk_src.clkr,
> + [GCC_GPLL1_OUT_EVEN] = &gcc_gpll1_out_even.clkr,
> + [GCC_DDRSS_ECPRI_GSI_CLK] = NULL,
> +};
> +
> +static struct gdsc *gcc_qdu1000_gdscs[] = {
> + [PCIE_0_GDSC] = &pcie_0_gdsc,
> + [PCIE_0_PHY_GDSC] = &pcie_0_phy_gdsc,
> + [USB30_PRIM_GDSC] = &usb30_prim_gdsc,
> };
>
> static const struct qcom_reset_map gcc_qdu1000_resets[] = {
> @@ -2597,10 +2646,13 @@ static const struct qcom_cc_desc gcc_qdu1000_desc = {
> .num_clks = ARRAY_SIZE(gcc_qdu1000_clocks),
> .resets = gcc_qdu1000_resets,
> .num_resets = ARRAY_SIZE(gcc_qdu1000_resets),
> + .gdscs = gcc_qdu1000_gdscs,
> + .num_gdscs = ARRAY_SIZE(gcc_qdu1000_gdscs),
> };
>
> static const struct of_device_id gcc_qdu1000_match_table[] = {
> { .compatible = "qcom,qdu1000-gcc" },
> + { .compatible = "qcom,qdu1000-gcc-v2" },
> { }
> };
> MODULE_DEVICE_TABLE(of, gcc_qdu1000_match_table);
> @@ -2617,6 +2669,12 @@ static int gcc_qdu1000_probe(struct platform_device *pdev)
> /* Update FORCE_MEM_CORE_ON for gcc_pcie_0_mstr_axi_clk */
> regmap_update_bits(regmap, 0x9d024, BIT(14), BIT(14));
>
> + if (of_device_is_compatible(pdev->dev.of_node, "qcom,qdu1000-gcc-v2")) {
> + gcc_qdu1000_clocks[GCC_DDRSS_ECPRI_GSI_CLK] = &gcc_ddrss_ecpri_gsi_clk.clkr;
> + gcc_pcie_0_clkref_en.halt_check = BRANCH_HALT_DELAY;
> + gcc_usb2_clkref_en.halt_check = BRANCH_HALT_DELAY;
> + }
> +
> ret = qcom_cc_register_rcg_dfs(regmap, gcc_dfs_clocks,
> ARRAY_SIZE(gcc_dfs_clocks));
> if (ret)

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