1 // SPDX-License-Identifier: GPL-2.0
3 * Qualcomm PCIe root complex driver
5 * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
6 * Copyright 2015 Linaro Limited.
8 * Author: Stanimir Varbanov <svarbanov@mm-sol.com>
11 #include <linux/clk.h>
12 #include <linux/delay.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/interrupt.h>
16 #include <linux/iopoll.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/of_device.h>
20 #include <linux/of_gpio.h>
21 #include <linux/pci.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/platform_device.h>
24 #include <linux/phy/phy.h>
25 #include <linux/regulator/consumer.h>
26 #include <linux/reset.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
30 #include "pcie-designware.h"
32 #define PCIE20_PARF_SYS_CTRL 0x00
33 #define MST_WAKEUP_EN BIT(13)
34 #define SLV_WAKEUP_EN BIT(12)
35 #define MSTR_ACLK_CGC_DIS BIT(10)
36 #define SLV_ACLK_CGC_DIS BIT(9)
37 #define CORE_CLK_CGC_DIS BIT(6)
38 #define AUX_PWR_DET BIT(4)
39 #define L23_CLK_RMV_DIS BIT(2)
40 #define L1_CLK_RMV_DIS BIT(1)
42 #define PCIE20_COMMAND_STATUS 0x04
43 #define CMD_BME_VAL 0x4
44 #define PCIE20_DEVICE_CONTROL2_STATUS2 0x98
45 #define PCIE_CAP_CPL_TIMEOUT_DISABLE 0x10
47 #define PCIE20_PARF_PHY_CTRL 0x40
48 #define PCIE20_PARF_PHY_REFCLK 0x4C
49 #define PCIE20_PARF_DBI_BASE_ADDR 0x168
50 #define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C
51 #define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174
52 #define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
53 #define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8
54 #define PCIE20_PARF_LTSSM 0x1B0
55 #define PCIE20_PARF_SID_OFFSET 0x234
56 #define PCIE20_PARF_BDF_TRANSLATE_CFG 0x24C
57 #define PCIE20_PARF_DEVICE_TYPE 0x1000
59 #define PCIE20_ELBI_SYS_CTRL 0x04
60 #define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0)
62 #define PCIE20_AXI_MSTR_RESP_COMP_CTRL0 0x818
63 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K 0x4
64 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_4K 0x5
65 #define PCIE20_AXI_MSTR_RESP_COMP_CTRL1 0x81c
66 #define CFG_BRIDGE_SB_INIT BIT(0)
68 #define PCIE20_CAP 0x70
69 #define PCIE20_CAP_LINK_CAPABILITIES (PCIE20_CAP + 0xC)
70 #define PCIE20_CAP_ACTIVE_STATE_LINK_PM_SUPPORT (BIT(10) | BIT(11))
71 #define PCIE20_CAP_LINK_1 (PCIE20_CAP + 0x14)
72 #define PCIE_CAP_LINK1_VAL 0x2FD7F
74 #define PCIE20_PARF_Q2A_FLUSH 0x1AC
76 #define PCIE20_MISC_CONTROL_1_REG 0x8BC
77 #define DBI_RO_WR_EN 1
79 #define PERST_DELAY_US 1000
81 #define PCIE20_PARF_PCS_DEEMPH 0x34
82 #define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16)
83 #define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8)
84 #define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0)
86 #define PCIE20_PARF_PCS_SWING 0x38
87 #define PCS_SWING_TX_SWING_FULL(x) ((x) << 8)
88 #define PCS_SWING_TX_SWING_LOW(x) ((x) << 0)
90 #define PCIE20_PARF_CONFIG_BITS 0x50
91 #define PHY_RX0_EQ(x) ((x) << 24)
93 #define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358
94 #define SLV_ADDR_SPACE_SZ 0x10000000
96 #define DEVICE_TYPE_RC 0x4
98 #define QCOM_PCIE_2_1_0_MAX_SUPPLY 3
99 #define QCOM_PCIE_2_1_0_MAX_CLOCKS 5
100 struct qcom_pcie_resources_2_1_0 {
101 struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS];
102 struct reset_control *pci_reset;
103 struct reset_control *axi_reset;
104 struct reset_control *ahb_reset;
105 struct reset_control *por_reset;
106 struct reset_control *phy_reset;
107 struct reset_control *ext_reset;
108 struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY];
111 struct qcom_pcie_resources_1_0_0 {
114 struct clk *master_bus;
115 struct clk *slave_bus;
116 struct reset_control *core;
117 struct regulator *vdda;
120 #define QCOM_PCIE_2_3_2_MAX_SUPPLY 2
121 struct qcom_pcie_resources_2_3_2 {
123 struct clk *master_clk;
124 struct clk *slave_clk;
126 struct clk *pipe_clk;
127 struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY];
130 #define QCOM_PCIE_2_4_0_MAX_CLOCKS 4
131 struct qcom_pcie_resources_2_4_0 {
132 struct clk_bulk_data clks[QCOM_PCIE_2_4_0_MAX_CLOCKS];
134 struct reset_control *axi_m_reset;
135 struct reset_control *axi_s_reset;
136 struct reset_control *pipe_reset;
137 struct reset_control *axi_m_vmid_reset;
138 struct reset_control *axi_s_xpu_reset;
139 struct reset_control *parf_reset;
140 struct reset_control *phy_reset;
141 struct reset_control *axi_m_sticky_reset;
142 struct reset_control *pipe_sticky_reset;
143 struct reset_control *pwr_reset;
144 struct reset_control *ahb_reset;
145 struct reset_control *phy_ahb_reset;
148 struct qcom_pcie_resources_2_3_3 {
150 struct clk *axi_m_clk;
151 struct clk *axi_s_clk;
154 struct reset_control *rst[7];
157 struct qcom_pcie_resources_2_7_0 {
158 struct clk_bulk_data clks[6];
159 struct regulator_bulk_data supplies[2];
160 struct reset_control *pci_reset;
161 struct clk *pipe_clk;
164 union qcom_pcie_resources {
165 struct qcom_pcie_resources_1_0_0 v1_0_0;
166 struct qcom_pcie_resources_2_1_0 v2_1_0;
167 struct qcom_pcie_resources_2_3_2 v2_3_2;
168 struct qcom_pcie_resources_2_3_3 v2_3_3;
169 struct qcom_pcie_resources_2_4_0 v2_4_0;
170 struct qcom_pcie_resources_2_7_0 v2_7_0;
175 struct qcom_pcie_ops {
176 int (*get_resources)(struct qcom_pcie *pcie);
177 int (*init)(struct qcom_pcie *pcie);
178 int (*post_init)(struct qcom_pcie *pcie);
179 void (*deinit)(struct qcom_pcie *pcie);
180 void (*post_deinit)(struct qcom_pcie *pcie);
181 void (*ltssm_enable)(struct qcom_pcie *pcie);
186 void __iomem *parf; /* DT parf */
187 void __iomem *elbi; /* DT elbi */
188 union qcom_pcie_resources res;
190 struct gpio_desc *reset;
191 const struct qcom_pcie_ops *ops;
194 #define to_qcom_pcie(x) dev_get_drvdata((x)->dev)
196 static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
198 gpiod_set_value_cansleep(pcie->reset, 1);
199 usleep_range(PERST_DELAY_US, PERST_DELAY_US + 500);
202 static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
204 /* Ensure that PERST has been asserted for at least 100 ms */
206 gpiod_set_value_cansleep(pcie->reset, 0);
207 usleep_range(PERST_DELAY_US, PERST_DELAY_US + 500);
210 static int qcom_pcie_establish_link(struct qcom_pcie *pcie)
212 struct dw_pcie *pci = pcie->pci;
214 if (dw_pcie_link_up(pci))
217 /* Enable Link Training state machine */
218 if (pcie->ops->ltssm_enable)
219 pcie->ops->ltssm_enable(pcie);
221 return dw_pcie_wait_for_link(pci);
224 static void qcom_pcie_2_1_0_ltssm_enable(struct qcom_pcie *pcie)
228 /* enable link training */
229 val = readl(pcie->elbi + PCIE20_ELBI_SYS_CTRL);
230 val |= PCIE20_ELBI_SYS_CTRL_LT_ENABLE;
231 writel(val, pcie->elbi + PCIE20_ELBI_SYS_CTRL);
234 static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie)
236 struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
237 struct dw_pcie *pci = pcie->pci;
238 struct device *dev = pci->dev;
241 res->supplies[0].supply = "vdda";
242 res->supplies[1].supply = "vdda_phy";
243 res->supplies[2].supply = "vdda_refclk";
244 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(res->supplies),
249 res->clks[0].id = "iface";
250 res->clks[1].id = "core";
251 res->clks[2].id = "phy";
252 res->clks[3].id = "aux";
253 res->clks[4].id = "ref";
255 /* iface, core, phy are required */
256 ret = devm_clk_bulk_get(dev, 3, res->clks);
260 /* aux, ref are optional */
261 ret = devm_clk_bulk_get_optional(dev, 2, res->clks + 3);
265 res->pci_reset = devm_reset_control_get_exclusive(dev, "pci");
266 if (IS_ERR(res->pci_reset))
267 return PTR_ERR(res->pci_reset);
269 res->axi_reset = devm_reset_control_get_exclusive(dev, "axi");
270 if (IS_ERR(res->axi_reset))
271 return PTR_ERR(res->axi_reset);
273 res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb");
274 if (IS_ERR(res->ahb_reset))
275 return PTR_ERR(res->ahb_reset);
277 res->por_reset = devm_reset_control_get_exclusive(dev, "por");
278 if (IS_ERR(res->por_reset))
279 return PTR_ERR(res->por_reset);
281 res->ext_reset = devm_reset_control_get_optional_exclusive(dev, "ext");
282 if (IS_ERR(res->ext_reset))
283 return PTR_ERR(res->ext_reset);
285 res->phy_reset = devm_reset_control_get_exclusive(dev, "phy");
286 return PTR_ERR_OR_ZERO(res->phy_reset);
289 static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie)
291 struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
293 clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
294 reset_control_assert(res->pci_reset);
295 reset_control_assert(res->axi_reset);
296 reset_control_assert(res->ahb_reset);
297 reset_control_assert(res->por_reset);
298 reset_control_assert(res->ext_reset);
299 reset_control_assert(res->phy_reset);
300 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
303 static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
305 struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
306 struct dw_pcie *pci = pcie->pci;
307 struct device *dev = pci->dev;
308 struct device_node *node = dev->of_node;
312 ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
314 dev_err(dev, "cannot enable regulators\n");
318 ret = reset_control_deassert(res->ahb_reset);
320 dev_err(dev, "cannot deassert ahb reset\n");
321 goto err_deassert_ahb;
324 ret = reset_control_deassert(res->ext_reset);
326 dev_err(dev, "cannot deassert ext reset\n");
327 goto err_deassert_ext;
330 ret = reset_control_deassert(res->phy_reset);
332 dev_err(dev, "cannot deassert phy reset\n");
333 goto err_deassert_phy;
336 ret = reset_control_deassert(res->pci_reset);
338 dev_err(dev, "cannot deassert pci reset\n");
339 goto err_deassert_pci;
342 ret = reset_control_deassert(res->por_reset);
344 dev_err(dev, "cannot deassert por reset\n");
345 goto err_deassert_por;
348 ret = reset_control_deassert(res->axi_reset);
350 dev_err(dev, "cannot deassert axi reset\n");
351 goto err_deassert_axi;
354 ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks);
358 /* enable PCIe clocks and resets */
359 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
361 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
363 if (of_device_is_compatible(node, "qcom,pcie-ipq8064")) {
364 writel(PCS_DEEMPH_TX_DEEMPH_GEN1(24) |
365 PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(24) |
366 PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(34),
367 pcie->parf + PCIE20_PARF_PCS_DEEMPH);
368 writel(PCS_SWING_TX_SWING_FULL(120) |
369 PCS_SWING_TX_SWING_LOW(120),
370 pcie->parf + PCIE20_PARF_PCS_SWING);
371 writel(PHY_RX0_EQ(4), pcie->parf + PCIE20_PARF_CONFIG_BITS);
374 /* enable external reference clock */
375 val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK);
377 writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK);
379 /* wait for clock acquisition */
380 usleep_range(1000, 1500);
383 /* Set the Max TLP size to 2K, instead of using default of 4K */
384 writel(CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K,
385 pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL0);
386 writel(CFG_BRIDGE_SB_INIT,
387 pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL1);
392 reset_control_assert(res->axi_reset);
394 reset_control_assert(res->por_reset);
396 reset_control_assert(res->pci_reset);
398 reset_control_assert(res->phy_reset);
400 reset_control_assert(res->ext_reset);
402 reset_control_assert(res->ahb_reset);
404 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
409 static int qcom_pcie_get_resources_1_0_0(struct qcom_pcie *pcie)
411 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
412 struct dw_pcie *pci = pcie->pci;
413 struct device *dev = pci->dev;
415 res->vdda = devm_regulator_get(dev, "vdda");
416 if (IS_ERR(res->vdda))
417 return PTR_ERR(res->vdda);
419 res->iface = devm_clk_get(dev, "iface");
420 if (IS_ERR(res->iface))
421 return PTR_ERR(res->iface);
423 res->aux = devm_clk_get(dev, "aux");
424 if (IS_ERR(res->aux))
425 return PTR_ERR(res->aux);
427 res->master_bus = devm_clk_get(dev, "master_bus");
428 if (IS_ERR(res->master_bus))
429 return PTR_ERR(res->master_bus);
431 res->slave_bus = devm_clk_get(dev, "slave_bus");
432 if (IS_ERR(res->slave_bus))
433 return PTR_ERR(res->slave_bus);
435 res->core = devm_reset_control_get_exclusive(dev, "core");
436 return PTR_ERR_OR_ZERO(res->core);
439 static void qcom_pcie_deinit_1_0_0(struct qcom_pcie *pcie)
441 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
443 reset_control_assert(res->core);
444 clk_disable_unprepare(res->slave_bus);
445 clk_disable_unprepare(res->master_bus);
446 clk_disable_unprepare(res->iface);
447 clk_disable_unprepare(res->aux);
448 regulator_disable(res->vdda);
451 static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie)
453 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
454 struct dw_pcie *pci = pcie->pci;
455 struct device *dev = pci->dev;
458 ret = reset_control_deassert(res->core);
460 dev_err(dev, "cannot deassert core reset\n");
464 ret = clk_prepare_enable(res->aux);
466 dev_err(dev, "cannot prepare/enable aux clock\n");
470 ret = clk_prepare_enable(res->iface);
472 dev_err(dev, "cannot prepare/enable iface clock\n");
476 ret = clk_prepare_enable(res->master_bus);
478 dev_err(dev, "cannot prepare/enable master_bus clock\n");
482 ret = clk_prepare_enable(res->slave_bus);
484 dev_err(dev, "cannot prepare/enable slave_bus clock\n");
488 ret = regulator_enable(res->vdda);
490 dev_err(dev, "cannot enable vdda regulator\n");
494 /* change DBI base address */
495 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
497 if (IS_ENABLED(CONFIG_PCI_MSI)) {
498 u32 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
501 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
506 clk_disable_unprepare(res->slave_bus);
508 clk_disable_unprepare(res->master_bus);
510 clk_disable_unprepare(res->iface);
512 clk_disable_unprepare(res->aux);
514 reset_control_assert(res->core);
519 static void qcom_pcie_2_3_2_ltssm_enable(struct qcom_pcie *pcie)
523 /* enable link training */
524 val = readl(pcie->parf + PCIE20_PARF_LTSSM);
526 writel(val, pcie->parf + PCIE20_PARF_LTSSM);
529 static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie)
531 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
532 struct dw_pcie *pci = pcie->pci;
533 struct device *dev = pci->dev;
536 res->supplies[0].supply = "vdda";
537 res->supplies[1].supply = "vddpe-3v3";
538 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(res->supplies),
543 res->aux_clk = devm_clk_get(dev, "aux");
544 if (IS_ERR(res->aux_clk))
545 return PTR_ERR(res->aux_clk);
547 res->cfg_clk = devm_clk_get(dev, "cfg");
548 if (IS_ERR(res->cfg_clk))
549 return PTR_ERR(res->cfg_clk);
551 res->master_clk = devm_clk_get(dev, "bus_master");
552 if (IS_ERR(res->master_clk))
553 return PTR_ERR(res->master_clk);
555 res->slave_clk = devm_clk_get(dev, "bus_slave");
556 if (IS_ERR(res->slave_clk))
557 return PTR_ERR(res->slave_clk);
559 res->pipe_clk = devm_clk_get(dev, "pipe");
560 return PTR_ERR_OR_ZERO(res->pipe_clk);
563 static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie)
565 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
567 clk_disable_unprepare(res->slave_clk);
568 clk_disable_unprepare(res->master_clk);
569 clk_disable_unprepare(res->cfg_clk);
570 clk_disable_unprepare(res->aux_clk);
572 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
575 static void qcom_pcie_post_deinit_2_3_2(struct qcom_pcie *pcie)
577 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
579 clk_disable_unprepare(res->pipe_clk);
582 static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie)
584 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
585 struct dw_pcie *pci = pcie->pci;
586 struct device *dev = pci->dev;
590 ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
592 dev_err(dev, "cannot enable regulators\n");
596 ret = clk_prepare_enable(res->aux_clk);
598 dev_err(dev, "cannot prepare/enable aux clock\n");
602 ret = clk_prepare_enable(res->cfg_clk);
604 dev_err(dev, "cannot prepare/enable cfg clock\n");
608 ret = clk_prepare_enable(res->master_clk);
610 dev_err(dev, "cannot prepare/enable master clock\n");
614 ret = clk_prepare_enable(res->slave_clk);
616 dev_err(dev, "cannot prepare/enable slave clock\n");
620 /* enable PCIe clocks and resets */
621 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
623 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
625 /* change DBI base address */
626 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
628 /* MAC PHY_POWERDOWN MUX DISABLE */
629 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
631 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
633 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
635 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
637 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
639 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
644 clk_disable_unprepare(res->master_clk);
646 clk_disable_unprepare(res->cfg_clk);
648 clk_disable_unprepare(res->aux_clk);
651 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
656 static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie)
658 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
659 struct dw_pcie *pci = pcie->pci;
660 struct device *dev = pci->dev;
663 ret = clk_prepare_enable(res->pipe_clk);
665 dev_err(dev, "cannot prepare/enable pipe clock\n");
672 static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie)
674 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
675 struct dw_pcie *pci = pcie->pci;
676 struct device *dev = pci->dev;
677 bool is_ipq = of_device_is_compatible(dev->of_node, "qcom,pcie-ipq4019");
680 res->clks[0].id = "aux";
681 res->clks[1].id = "master_bus";
682 res->clks[2].id = "slave_bus";
683 res->clks[3].id = "iface";
685 /* qcom,pcie-ipq4019 is defined without "iface" */
686 res->num_clks = is_ipq ? 3 : 4;
688 ret = devm_clk_bulk_get(dev, res->num_clks, res->clks);
692 res->axi_m_reset = devm_reset_control_get_exclusive(dev, "axi_m");
693 if (IS_ERR(res->axi_m_reset))
694 return PTR_ERR(res->axi_m_reset);
696 res->axi_s_reset = devm_reset_control_get_exclusive(dev, "axi_s");
697 if (IS_ERR(res->axi_s_reset))
698 return PTR_ERR(res->axi_s_reset);
702 * These resources relates to the PHY or are secure clocks, but
703 * are controlled here for IPQ4019
705 res->pipe_reset = devm_reset_control_get_exclusive(dev, "pipe");
706 if (IS_ERR(res->pipe_reset))
707 return PTR_ERR(res->pipe_reset);
709 res->axi_m_vmid_reset = devm_reset_control_get_exclusive(dev,
711 if (IS_ERR(res->axi_m_vmid_reset))
712 return PTR_ERR(res->axi_m_vmid_reset);
714 res->axi_s_xpu_reset = devm_reset_control_get_exclusive(dev,
716 if (IS_ERR(res->axi_s_xpu_reset))
717 return PTR_ERR(res->axi_s_xpu_reset);
719 res->parf_reset = devm_reset_control_get_exclusive(dev, "parf");
720 if (IS_ERR(res->parf_reset))
721 return PTR_ERR(res->parf_reset);
723 res->phy_reset = devm_reset_control_get_exclusive(dev, "phy");
724 if (IS_ERR(res->phy_reset))
725 return PTR_ERR(res->phy_reset);
728 res->axi_m_sticky_reset = devm_reset_control_get_exclusive(dev,
730 if (IS_ERR(res->axi_m_sticky_reset))
731 return PTR_ERR(res->axi_m_sticky_reset);
733 res->pipe_sticky_reset = devm_reset_control_get_exclusive(dev,
735 if (IS_ERR(res->pipe_sticky_reset))
736 return PTR_ERR(res->pipe_sticky_reset);
738 res->pwr_reset = devm_reset_control_get_exclusive(dev, "pwr");
739 if (IS_ERR(res->pwr_reset))
740 return PTR_ERR(res->pwr_reset);
742 res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb");
743 if (IS_ERR(res->ahb_reset))
744 return PTR_ERR(res->ahb_reset);
747 res->phy_ahb_reset = devm_reset_control_get_exclusive(dev, "phy_ahb");
748 if (IS_ERR(res->phy_ahb_reset))
749 return PTR_ERR(res->phy_ahb_reset);
755 static void qcom_pcie_deinit_2_4_0(struct qcom_pcie *pcie)
757 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
759 reset_control_assert(res->axi_m_reset);
760 reset_control_assert(res->axi_s_reset);
761 reset_control_assert(res->pipe_reset);
762 reset_control_assert(res->pipe_sticky_reset);
763 reset_control_assert(res->phy_reset);
764 reset_control_assert(res->phy_ahb_reset);
765 reset_control_assert(res->axi_m_sticky_reset);
766 reset_control_assert(res->pwr_reset);
767 reset_control_assert(res->ahb_reset);
768 clk_bulk_disable_unprepare(res->num_clks, res->clks);
771 static int qcom_pcie_init_2_4_0(struct qcom_pcie *pcie)
773 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
774 struct dw_pcie *pci = pcie->pci;
775 struct device *dev = pci->dev;
779 ret = reset_control_assert(res->axi_m_reset);
781 dev_err(dev, "cannot assert axi master reset\n");
785 ret = reset_control_assert(res->axi_s_reset);
787 dev_err(dev, "cannot assert axi slave reset\n");
791 usleep_range(10000, 12000);
793 ret = reset_control_assert(res->pipe_reset);
795 dev_err(dev, "cannot assert pipe reset\n");
799 ret = reset_control_assert(res->pipe_sticky_reset);
801 dev_err(dev, "cannot assert pipe sticky reset\n");
805 ret = reset_control_assert(res->phy_reset);
807 dev_err(dev, "cannot assert phy reset\n");
811 ret = reset_control_assert(res->phy_ahb_reset);
813 dev_err(dev, "cannot assert phy ahb reset\n");
817 usleep_range(10000, 12000);
819 ret = reset_control_assert(res->axi_m_sticky_reset);
821 dev_err(dev, "cannot assert axi master sticky reset\n");
825 ret = reset_control_assert(res->pwr_reset);
827 dev_err(dev, "cannot assert power reset\n");
831 ret = reset_control_assert(res->ahb_reset);
833 dev_err(dev, "cannot assert ahb reset\n");
837 usleep_range(10000, 12000);
839 ret = reset_control_deassert(res->phy_ahb_reset);
841 dev_err(dev, "cannot deassert phy ahb reset\n");
845 ret = reset_control_deassert(res->phy_reset);
847 dev_err(dev, "cannot deassert phy reset\n");
851 ret = reset_control_deassert(res->pipe_reset);
853 dev_err(dev, "cannot deassert pipe reset\n");
857 ret = reset_control_deassert(res->pipe_sticky_reset);
859 dev_err(dev, "cannot deassert pipe sticky reset\n");
860 goto err_rst_pipe_sticky;
863 usleep_range(10000, 12000);
865 ret = reset_control_deassert(res->axi_m_reset);
867 dev_err(dev, "cannot deassert axi master reset\n");
871 ret = reset_control_deassert(res->axi_m_sticky_reset);
873 dev_err(dev, "cannot deassert axi master sticky reset\n");
874 goto err_rst_axi_m_sticky;
877 ret = reset_control_deassert(res->axi_s_reset);
879 dev_err(dev, "cannot deassert axi slave reset\n");
883 ret = reset_control_deassert(res->pwr_reset);
885 dev_err(dev, "cannot deassert power reset\n");
889 ret = reset_control_deassert(res->ahb_reset);
891 dev_err(dev, "cannot deassert ahb reset\n");
895 usleep_range(10000, 12000);
897 ret = clk_bulk_prepare_enable(res->num_clks, res->clks);
901 /* enable PCIe clocks and resets */
902 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
904 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
906 /* change DBI base address */
907 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
909 /* MAC PHY_POWERDOWN MUX DISABLE */
910 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
912 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
914 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
916 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
918 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
920 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
925 reset_control_assert(res->ahb_reset);
927 reset_control_assert(res->pwr_reset);
929 reset_control_assert(res->axi_s_reset);
931 reset_control_assert(res->axi_m_sticky_reset);
932 err_rst_axi_m_sticky:
933 reset_control_assert(res->axi_m_reset);
935 reset_control_assert(res->pipe_sticky_reset);
937 reset_control_assert(res->pipe_reset);
939 reset_control_assert(res->phy_reset);
941 reset_control_assert(res->phy_ahb_reset);
945 static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie)
947 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
948 struct dw_pcie *pci = pcie->pci;
949 struct device *dev = pci->dev;
951 const char *rst_names[] = { "axi_m", "axi_s", "pipe",
952 "axi_m_sticky", "sticky",
955 res->iface = devm_clk_get(dev, "iface");
956 if (IS_ERR(res->iface))
957 return PTR_ERR(res->iface);
959 res->axi_m_clk = devm_clk_get(dev, "axi_m");
960 if (IS_ERR(res->axi_m_clk))
961 return PTR_ERR(res->axi_m_clk);
963 res->axi_s_clk = devm_clk_get(dev, "axi_s");
964 if (IS_ERR(res->axi_s_clk))
965 return PTR_ERR(res->axi_s_clk);
967 res->ahb_clk = devm_clk_get(dev, "ahb");
968 if (IS_ERR(res->ahb_clk))
969 return PTR_ERR(res->ahb_clk);
971 res->aux_clk = devm_clk_get(dev, "aux");
972 if (IS_ERR(res->aux_clk))
973 return PTR_ERR(res->aux_clk);
975 for (i = 0; i < ARRAY_SIZE(rst_names); i++) {
976 res->rst[i] = devm_reset_control_get(dev, rst_names[i]);
977 if (IS_ERR(res->rst[i]))
978 return PTR_ERR(res->rst[i]);
984 static void qcom_pcie_deinit_2_3_3(struct qcom_pcie *pcie)
986 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
988 clk_disable_unprepare(res->iface);
989 clk_disable_unprepare(res->axi_m_clk);
990 clk_disable_unprepare(res->axi_s_clk);
991 clk_disable_unprepare(res->ahb_clk);
992 clk_disable_unprepare(res->aux_clk);
995 static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie)
997 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
998 struct dw_pcie *pci = pcie->pci;
999 struct device *dev = pci->dev;
1003 for (i = 0; i < ARRAY_SIZE(res->rst); i++) {
1004 ret = reset_control_assert(res->rst[i]);
1006 dev_err(dev, "reset #%d assert failed (%d)\n", i, ret);
1011 usleep_range(2000, 2500);
1013 for (i = 0; i < ARRAY_SIZE(res->rst); i++) {
1014 ret = reset_control_deassert(res->rst[i]);
1016 dev_err(dev, "reset #%d deassert failed (%d)\n", i,
1023 * Don't have a way to see if the reset has completed.
1024 * Wait for some time.
1026 usleep_range(2000, 2500);
1028 ret = clk_prepare_enable(res->iface);
1030 dev_err(dev, "cannot prepare/enable core clock\n");
1034 ret = clk_prepare_enable(res->axi_m_clk);
1036 dev_err(dev, "cannot prepare/enable core clock\n");
1040 ret = clk_prepare_enable(res->axi_s_clk);
1042 dev_err(dev, "cannot prepare/enable axi slave clock\n");
1046 ret = clk_prepare_enable(res->ahb_clk);
1048 dev_err(dev, "cannot prepare/enable ahb clock\n");
1052 ret = clk_prepare_enable(res->aux_clk);
1054 dev_err(dev, "cannot prepare/enable aux clock\n");
1058 writel(SLV_ADDR_SPACE_SZ,
1059 pcie->parf + PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE);
1061 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
1063 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
1065 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
1067 writel(MST_WAKEUP_EN | SLV_WAKEUP_EN | MSTR_ACLK_CGC_DIS
1068 | SLV_ACLK_CGC_DIS | CORE_CLK_CGC_DIS |
1069 AUX_PWR_DET | L23_CLK_RMV_DIS | L1_CLK_RMV_DIS,
1070 pcie->parf + PCIE20_PARF_SYS_CTRL);
1071 writel(0, pcie->parf + PCIE20_PARF_Q2A_FLUSH);
1073 writel(CMD_BME_VAL, pci->dbi_base + PCIE20_COMMAND_STATUS);
1074 writel(DBI_RO_WR_EN, pci->dbi_base + PCIE20_MISC_CONTROL_1_REG);
1075 writel(PCIE_CAP_LINK1_VAL, pci->dbi_base + PCIE20_CAP_LINK_1);
1077 val = readl(pci->dbi_base + PCIE20_CAP_LINK_CAPABILITIES);
1078 val &= ~PCIE20_CAP_ACTIVE_STATE_LINK_PM_SUPPORT;
1079 writel(val, pci->dbi_base + PCIE20_CAP_LINK_CAPABILITIES);
1081 writel(PCIE_CAP_CPL_TIMEOUT_DISABLE, pci->dbi_base +
1082 PCIE20_DEVICE_CONTROL2_STATUS2);
1087 clk_disable_unprepare(res->ahb_clk);
1089 clk_disable_unprepare(res->axi_s_clk);
1091 clk_disable_unprepare(res->axi_m_clk);
1093 clk_disable_unprepare(res->iface);
1096 * Not checking for failure, will anyway return
1097 * the original failure in 'ret'.
1099 for (i = 0; i < ARRAY_SIZE(res->rst); i++)
1100 reset_control_assert(res->rst[i]);
1105 static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
1107 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1108 struct dw_pcie *pci = pcie->pci;
1109 struct device *dev = pci->dev;
1112 res->pci_reset = devm_reset_control_get_exclusive(dev, "pci");
1113 if (IS_ERR(res->pci_reset))
1114 return PTR_ERR(res->pci_reset);
1116 res->supplies[0].supply = "vdda";
1117 res->supplies[1].supply = "vddpe-3v3";
1118 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(res->supplies),
1123 res->clks[0].id = "aux";
1124 res->clks[1].id = "cfg";
1125 res->clks[2].id = "bus_master";
1126 res->clks[3].id = "bus_slave";
1127 res->clks[4].id = "slave_q2a";
1128 res->clks[5].id = "tbu";
1130 ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks);
1134 res->pipe_clk = devm_clk_get(dev, "pipe");
1135 return PTR_ERR_OR_ZERO(res->pipe_clk);
1138 static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie)
1140 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1141 struct dw_pcie *pci = pcie->pci;
1142 struct device *dev = pci->dev;
1146 ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
1148 dev_err(dev, "cannot enable regulators\n");
1152 ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks);
1154 goto err_disable_regulators;
1156 ret = reset_control_assert(res->pci_reset);
1158 dev_err(dev, "cannot deassert pci reset\n");
1159 goto err_disable_clocks;
1162 usleep_range(1000, 1500);
1164 ret = reset_control_deassert(res->pci_reset);
1166 dev_err(dev, "cannot deassert pci reset\n");
1167 goto err_disable_clocks;
1170 ret = clk_prepare_enable(res->pipe_clk);
1172 dev_err(dev, "cannot prepare/enable pipe clock\n");
1173 goto err_disable_clocks;
1176 /* configure PCIe to RC mode */
1177 writel(DEVICE_TYPE_RC, pcie->parf + PCIE20_PARF_DEVICE_TYPE);
1179 /* enable PCIe clocks and resets */
1180 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
1182 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
1184 /* change DBI base address */
1185 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
1187 /* MAC PHY_POWERDOWN MUX DISABLE */
1188 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
1190 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
1192 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
1194 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
1196 if (IS_ENABLED(CONFIG_PCI_MSI)) {
1197 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
1199 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
1204 clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
1205 err_disable_regulators:
1206 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
1211 static void qcom_pcie_deinit_2_7_0(struct qcom_pcie *pcie)
1213 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1215 clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
1216 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
1219 static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie)
1221 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1223 return clk_prepare_enable(res->pipe_clk);
1226 static void qcom_pcie_post_deinit_2_7_0(struct qcom_pcie *pcie)
1228 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1230 clk_disable_unprepare(res->pipe_clk);
1233 static int qcom_pcie_link_up(struct dw_pcie *pci)
1235 u16 val = readw(pci->dbi_base + PCIE20_CAP + PCI_EXP_LNKSTA);
1237 return !!(val & PCI_EXP_LNKSTA_DLLLA);
1240 static int qcom_pcie_host_init(struct pcie_port *pp)
1242 struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
1243 struct qcom_pcie *pcie = to_qcom_pcie(pci);
1246 qcom_ep_reset_assert(pcie);
1248 ret = pcie->ops->init(pcie);
1252 ret = phy_power_on(pcie->phy);
1256 if (pcie->ops->post_init) {
1257 ret = pcie->ops->post_init(pcie);
1259 goto err_disable_phy;
1262 dw_pcie_setup_rc(pp);
1264 if (IS_ENABLED(CONFIG_PCI_MSI))
1265 dw_pcie_msi_init(pp);
1267 qcom_ep_reset_deassert(pcie);
1269 ret = qcom_pcie_establish_link(pcie);
1275 qcom_ep_reset_assert(pcie);
1276 if (pcie->ops->post_deinit)
1277 pcie->ops->post_deinit(pcie);
1279 phy_power_off(pcie->phy);
1281 pcie->ops->deinit(pcie);
1286 static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
1287 .host_init = qcom_pcie_host_init,
1290 /* Qcom IP rev.: 2.1.0 Synopsys IP rev.: 4.01a */
1291 static const struct qcom_pcie_ops ops_2_1_0 = {
1292 .get_resources = qcom_pcie_get_resources_2_1_0,
1293 .init = qcom_pcie_init_2_1_0,
1294 .deinit = qcom_pcie_deinit_2_1_0,
1295 .ltssm_enable = qcom_pcie_2_1_0_ltssm_enable,
1298 /* Qcom IP rev.: 1.0.0 Synopsys IP rev.: 4.11a */
1299 static const struct qcom_pcie_ops ops_1_0_0 = {
1300 .get_resources = qcom_pcie_get_resources_1_0_0,
1301 .init = qcom_pcie_init_1_0_0,
1302 .deinit = qcom_pcie_deinit_1_0_0,
1303 .ltssm_enable = qcom_pcie_2_1_0_ltssm_enable,
1306 /* Qcom IP rev.: 2.3.2 Synopsys IP rev.: 4.21a */
1307 static const struct qcom_pcie_ops ops_2_3_2 = {
1308 .get_resources = qcom_pcie_get_resources_2_3_2,
1309 .init = qcom_pcie_init_2_3_2,
1310 .post_init = qcom_pcie_post_init_2_3_2,
1311 .deinit = qcom_pcie_deinit_2_3_2,
1312 .post_deinit = qcom_pcie_post_deinit_2_3_2,
1313 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1316 /* Qcom IP rev.: 2.4.0 Synopsys IP rev.: 4.20a */
1317 static const struct qcom_pcie_ops ops_2_4_0 = {
1318 .get_resources = qcom_pcie_get_resources_2_4_0,
1319 .init = qcom_pcie_init_2_4_0,
1320 .deinit = qcom_pcie_deinit_2_4_0,
1321 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1324 /* Qcom IP rev.: 2.3.3 Synopsys IP rev.: 4.30a */
1325 static const struct qcom_pcie_ops ops_2_3_3 = {
1326 .get_resources = qcom_pcie_get_resources_2_3_3,
1327 .init = qcom_pcie_init_2_3_3,
1328 .deinit = qcom_pcie_deinit_2_3_3,
1329 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1332 /* Qcom IP rev.: 2.7.0 Synopsys IP rev.: 4.30a */
1333 static const struct qcom_pcie_ops ops_2_7_0 = {
1334 .get_resources = qcom_pcie_get_resources_2_7_0,
1335 .init = qcom_pcie_init_2_7_0,
1336 .deinit = qcom_pcie_deinit_2_7_0,
1337 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1338 .post_init = qcom_pcie_post_init_2_7_0,
1339 .post_deinit = qcom_pcie_post_deinit_2_7_0,
1342 static const struct dw_pcie_ops dw_pcie_ops = {
1343 .link_up = qcom_pcie_link_up,
1346 static int qcom_pcie_probe(struct platform_device *pdev)
1348 struct device *dev = &pdev->dev;
1349 struct resource *res;
1350 struct pcie_port *pp;
1351 struct dw_pcie *pci;
1352 struct qcom_pcie *pcie;
1355 pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
1359 pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
1363 pm_runtime_enable(dev);
1364 ret = pm_runtime_get_sync(dev);
1366 pm_runtime_disable(dev);
1371 pci->ops = &dw_pcie_ops;
1376 pcie->ops = of_device_get_match_data(dev);
1378 pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_HIGH);
1379 if (IS_ERR(pcie->reset)) {
1380 ret = PTR_ERR(pcie->reset);
1381 goto err_pm_runtime_put;
1384 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
1385 pcie->parf = devm_ioremap_resource(dev, res);
1386 if (IS_ERR(pcie->parf)) {
1387 ret = PTR_ERR(pcie->parf);
1388 goto err_pm_runtime_put;
1391 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
1392 pci->dbi_base = devm_pci_remap_cfg_resource(dev, res);
1393 if (IS_ERR(pci->dbi_base)) {
1394 ret = PTR_ERR(pci->dbi_base);
1395 goto err_pm_runtime_put;
1398 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
1399 pcie->elbi = devm_ioremap_resource(dev, res);
1400 if (IS_ERR(pcie->elbi)) {
1401 ret = PTR_ERR(pcie->elbi);
1402 goto err_pm_runtime_put;
1405 pcie->phy = devm_phy_optional_get(dev, "pciephy");
1406 if (IS_ERR(pcie->phy)) {
1407 ret = PTR_ERR(pcie->phy);
1408 goto err_pm_runtime_put;
1411 ret = pcie->ops->get_resources(pcie);
1413 goto err_pm_runtime_put;
1415 pp->ops = &qcom_pcie_dw_ops;
1417 if (IS_ENABLED(CONFIG_PCI_MSI)) {
1418 pp->msi_irq = platform_get_irq_byname(pdev, "msi");
1419 if (pp->msi_irq < 0) {
1421 goto err_pm_runtime_put;
1425 ret = phy_init(pcie->phy);
1427 pm_runtime_disable(&pdev->dev);
1428 goto err_pm_runtime_put;
1431 platform_set_drvdata(pdev, pcie);
1433 ret = dw_pcie_host_init(pp);
1435 dev_err(dev, "cannot initialize host\n");
1436 pm_runtime_disable(&pdev->dev);
1437 goto err_pm_runtime_put;
1443 pm_runtime_put(dev);
1444 pm_runtime_disable(dev);
1449 static const struct of_device_id qcom_pcie_match[] = {
1450 { .compatible = "qcom,pcie-apq8084", .data = &ops_1_0_0 },
1451 { .compatible = "qcom,pcie-ipq8064", .data = &ops_2_1_0 },
1452 { .compatible = "qcom,pcie-apq8064", .data = &ops_2_1_0 },
1453 { .compatible = "qcom,pcie-msm8996", .data = &ops_2_3_2 },
1454 { .compatible = "qcom,pcie-ipq8074", .data = &ops_2_3_3 },
1455 { .compatible = "qcom,pcie-ipq4019", .data = &ops_2_4_0 },
1456 { .compatible = "qcom,pcie-qcs404", .data = &ops_2_4_0 },
1457 { .compatible = "qcom,pcie-sdm845", .data = &ops_2_7_0 },
1461 static void qcom_fixup_class(struct pci_dev *dev)
1463 dev->class = PCI_CLASS_BRIDGE_PCI << 8;
1465 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0101, qcom_fixup_class);
1466 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0104, qcom_fixup_class);
1467 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0106, qcom_fixup_class);
1468 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0107, qcom_fixup_class);
1469 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0302, qcom_fixup_class);
1470 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1000, qcom_fixup_class);
1471 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1001, qcom_fixup_class);
1473 static struct platform_driver qcom_pcie_driver = {
1474 .probe = qcom_pcie_probe,
1476 .name = "qcom-pcie",
1477 .suppress_bind_attrs = true,
1478 .of_match_table = qcom_pcie_match,
1481 builtin_platform_driver(qcom_pcie_driver);