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 "../../pci.h"
31 #include "pcie-designware.h"
33 #define PCIE20_PARF_SYS_CTRL 0x00
34 #define MST_WAKEUP_EN BIT(13)
35 #define SLV_WAKEUP_EN BIT(12)
36 #define MSTR_ACLK_CGC_DIS BIT(10)
37 #define SLV_ACLK_CGC_DIS BIT(9)
38 #define CORE_CLK_CGC_DIS BIT(6)
39 #define AUX_PWR_DET BIT(4)
40 #define L23_CLK_RMV_DIS BIT(2)
41 #define L1_CLK_RMV_DIS BIT(1)
43 #define PCIE20_PARF_PHY_CTRL 0x40
44 #define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16)
45 #define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) ((x) << 16)
47 #define PCIE20_PARF_PHY_REFCLK 0x4C
48 #define PHY_REFCLK_SSP_EN BIT(16)
49 #define PHY_REFCLK_USE_PAD BIT(12)
51 #define PCIE20_PARF_DBI_BASE_ADDR 0x168
52 #define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C
53 #define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174
54 #define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
55 #define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8
56 #define PCIE20_PARF_LTSSM 0x1B0
57 #define PCIE20_PARF_SID_OFFSET 0x234
58 #define PCIE20_PARF_BDF_TRANSLATE_CFG 0x24C
59 #define PCIE20_PARF_DEVICE_TYPE 0x1000
61 #define PCIE20_ELBI_SYS_CTRL 0x04
62 #define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0)
64 #define PCIE20_AXI_MSTR_RESP_COMP_CTRL0 0x818
65 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K 0x4
66 #define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_4K 0x5
67 #define PCIE20_AXI_MSTR_RESP_COMP_CTRL1 0x81c
68 #define CFG_BRIDGE_SB_INIT BIT(0)
70 #define PCIE_CAP_LINK1_VAL 0x2FD7F
72 #define PCIE20_PARF_Q2A_FLUSH 0x1AC
74 #define PCIE20_MISC_CONTROL_1_REG 0x8BC
75 #define DBI_RO_WR_EN 1
77 #define PERST_DELAY_US 1000
79 #define PCIE20_PARF_PCS_DEEMPH 0x34
80 #define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16)
81 #define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8)
82 #define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0)
84 #define PCIE20_PARF_PCS_SWING 0x38
85 #define PCS_SWING_TX_SWING_FULL(x) ((x) << 8)
86 #define PCS_SWING_TX_SWING_LOW(x) ((x) << 0)
88 #define PCIE20_PARF_CONFIG_BITS 0x50
89 #define PHY_RX0_EQ(x) ((x) << 24)
91 #define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358
92 #define SLV_ADDR_SPACE_SZ 0x10000000
94 #define PCIE20_LNK_CONTROL2_LINK_STATUS2 0xa0
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 of_device_is_compatible(node, "qcom,pcie-ipq8064-v2")) {
365 writel(PCS_DEEMPH_TX_DEEMPH_GEN1(24) |
366 PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(24) |
367 PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(34),
368 pcie->parf + PCIE20_PARF_PCS_DEEMPH);
369 writel(PCS_SWING_TX_SWING_FULL(120) |
370 PCS_SWING_TX_SWING_LOW(120),
371 pcie->parf + PCIE20_PARF_PCS_SWING);
372 writel(PHY_RX0_EQ(4), pcie->parf + PCIE20_PARF_CONFIG_BITS);
375 if (of_device_is_compatible(node, "qcom,pcie-ipq8064")) {
376 /* set TX termination offset */
377 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
378 val &= ~PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK;
379 val |= PHY_CTRL_PHY_TX0_TERM_OFFSET(7);
380 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
383 /* enable external reference clock */
384 val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK);
385 val &= ~PHY_REFCLK_USE_PAD;
386 val |= PHY_REFCLK_SSP_EN;
387 writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK);
389 /* wait for clock acquisition */
390 usleep_range(1000, 1500);
392 /* Set the Max TLP size to 2K, instead of using default of 4K */
393 writel(CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K,
394 pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL0);
395 writel(CFG_BRIDGE_SB_INIT,
396 pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL1);
401 reset_control_assert(res->axi_reset);
403 reset_control_assert(res->por_reset);
405 reset_control_assert(res->pci_reset);
407 reset_control_assert(res->phy_reset);
409 reset_control_assert(res->ext_reset);
411 reset_control_assert(res->ahb_reset);
413 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
418 static int qcom_pcie_get_resources_1_0_0(struct qcom_pcie *pcie)
420 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
421 struct dw_pcie *pci = pcie->pci;
422 struct device *dev = pci->dev;
424 res->vdda = devm_regulator_get(dev, "vdda");
425 if (IS_ERR(res->vdda))
426 return PTR_ERR(res->vdda);
428 res->iface = devm_clk_get(dev, "iface");
429 if (IS_ERR(res->iface))
430 return PTR_ERR(res->iface);
432 res->aux = devm_clk_get(dev, "aux");
433 if (IS_ERR(res->aux))
434 return PTR_ERR(res->aux);
436 res->master_bus = devm_clk_get(dev, "master_bus");
437 if (IS_ERR(res->master_bus))
438 return PTR_ERR(res->master_bus);
440 res->slave_bus = devm_clk_get(dev, "slave_bus");
441 if (IS_ERR(res->slave_bus))
442 return PTR_ERR(res->slave_bus);
444 res->core = devm_reset_control_get_exclusive(dev, "core");
445 return PTR_ERR_OR_ZERO(res->core);
448 static void qcom_pcie_deinit_1_0_0(struct qcom_pcie *pcie)
450 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
452 reset_control_assert(res->core);
453 clk_disable_unprepare(res->slave_bus);
454 clk_disable_unprepare(res->master_bus);
455 clk_disable_unprepare(res->iface);
456 clk_disable_unprepare(res->aux);
457 regulator_disable(res->vdda);
460 static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie)
462 struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0;
463 struct dw_pcie *pci = pcie->pci;
464 struct device *dev = pci->dev;
467 ret = reset_control_deassert(res->core);
469 dev_err(dev, "cannot deassert core reset\n");
473 ret = clk_prepare_enable(res->aux);
475 dev_err(dev, "cannot prepare/enable aux clock\n");
479 ret = clk_prepare_enable(res->iface);
481 dev_err(dev, "cannot prepare/enable iface clock\n");
485 ret = clk_prepare_enable(res->master_bus);
487 dev_err(dev, "cannot prepare/enable master_bus clock\n");
491 ret = clk_prepare_enable(res->slave_bus);
493 dev_err(dev, "cannot prepare/enable slave_bus clock\n");
497 ret = regulator_enable(res->vdda);
499 dev_err(dev, "cannot enable vdda regulator\n");
503 /* change DBI base address */
504 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
506 if (IS_ENABLED(CONFIG_PCI_MSI)) {
507 u32 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
510 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
515 clk_disable_unprepare(res->slave_bus);
517 clk_disable_unprepare(res->master_bus);
519 clk_disable_unprepare(res->iface);
521 clk_disable_unprepare(res->aux);
523 reset_control_assert(res->core);
528 static void qcom_pcie_2_3_2_ltssm_enable(struct qcom_pcie *pcie)
532 /* enable link training */
533 val = readl(pcie->parf + PCIE20_PARF_LTSSM);
535 writel(val, pcie->parf + PCIE20_PARF_LTSSM);
538 static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie)
540 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
541 struct dw_pcie *pci = pcie->pci;
542 struct device *dev = pci->dev;
545 res->supplies[0].supply = "vdda";
546 res->supplies[1].supply = "vddpe-3v3";
547 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(res->supplies),
552 res->aux_clk = devm_clk_get(dev, "aux");
553 if (IS_ERR(res->aux_clk))
554 return PTR_ERR(res->aux_clk);
556 res->cfg_clk = devm_clk_get(dev, "cfg");
557 if (IS_ERR(res->cfg_clk))
558 return PTR_ERR(res->cfg_clk);
560 res->master_clk = devm_clk_get(dev, "bus_master");
561 if (IS_ERR(res->master_clk))
562 return PTR_ERR(res->master_clk);
564 res->slave_clk = devm_clk_get(dev, "bus_slave");
565 if (IS_ERR(res->slave_clk))
566 return PTR_ERR(res->slave_clk);
568 res->pipe_clk = devm_clk_get(dev, "pipe");
569 return PTR_ERR_OR_ZERO(res->pipe_clk);
572 static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie)
574 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
576 clk_disable_unprepare(res->slave_clk);
577 clk_disable_unprepare(res->master_clk);
578 clk_disable_unprepare(res->cfg_clk);
579 clk_disable_unprepare(res->aux_clk);
581 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
584 static void qcom_pcie_post_deinit_2_3_2(struct qcom_pcie *pcie)
586 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
588 clk_disable_unprepare(res->pipe_clk);
591 static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie)
593 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
594 struct dw_pcie *pci = pcie->pci;
595 struct device *dev = pci->dev;
599 ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
601 dev_err(dev, "cannot enable regulators\n");
605 ret = clk_prepare_enable(res->aux_clk);
607 dev_err(dev, "cannot prepare/enable aux clock\n");
611 ret = clk_prepare_enable(res->cfg_clk);
613 dev_err(dev, "cannot prepare/enable cfg clock\n");
617 ret = clk_prepare_enable(res->master_clk);
619 dev_err(dev, "cannot prepare/enable master clock\n");
623 ret = clk_prepare_enable(res->slave_clk);
625 dev_err(dev, "cannot prepare/enable slave clock\n");
629 /* enable PCIe clocks and resets */
630 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
632 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
634 /* change DBI base address */
635 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
637 /* MAC PHY_POWERDOWN MUX DISABLE */
638 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
640 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
642 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
644 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
646 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
648 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
653 clk_disable_unprepare(res->master_clk);
655 clk_disable_unprepare(res->cfg_clk);
657 clk_disable_unprepare(res->aux_clk);
660 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
665 static int qcom_pcie_post_init_2_3_2(struct qcom_pcie *pcie)
667 struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2;
668 struct dw_pcie *pci = pcie->pci;
669 struct device *dev = pci->dev;
672 ret = clk_prepare_enable(res->pipe_clk);
674 dev_err(dev, "cannot prepare/enable pipe clock\n");
681 static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie)
683 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
684 struct dw_pcie *pci = pcie->pci;
685 struct device *dev = pci->dev;
686 bool is_ipq = of_device_is_compatible(dev->of_node, "qcom,pcie-ipq4019");
689 res->clks[0].id = "aux";
690 res->clks[1].id = "master_bus";
691 res->clks[2].id = "slave_bus";
692 res->clks[3].id = "iface";
694 /* qcom,pcie-ipq4019 is defined without "iface" */
695 res->num_clks = is_ipq ? 3 : 4;
697 ret = devm_clk_bulk_get(dev, res->num_clks, res->clks);
701 res->axi_m_reset = devm_reset_control_get_exclusive(dev, "axi_m");
702 if (IS_ERR(res->axi_m_reset))
703 return PTR_ERR(res->axi_m_reset);
705 res->axi_s_reset = devm_reset_control_get_exclusive(dev, "axi_s");
706 if (IS_ERR(res->axi_s_reset))
707 return PTR_ERR(res->axi_s_reset);
711 * These resources relates to the PHY or are secure clocks, but
712 * are controlled here for IPQ4019
714 res->pipe_reset = devm_reset_control_get_exclusive(dev, "pipe");
715 if (IS_ERR(res->pipe_reset))
716 return PTR_ERR(res->pipe_reset);
718 res->axi_m_vmid_reset = devm_reset_control_get_exclusive(dev,
720 if (IS_ERR(res->axi_m_vmid_reset))
721 return PTR_ERR(res->axi_m_vmid_reset);
723 res->axi_s_xpu_reset = devm_reset_control_get_exclusive(dev,
725 if (IS_ERR(res->axi_s_xpu_reset))
726 return PTR_ERR(res->axi_s_xpu_reset);
728 res->parf_reset = devm_reset_control_get_exclusive(dev, "parf");
729 if (IS_ERR(res->parf_reset))
730 return PTR_ERR(res->parf_reset);
732 res->phy_reset = devm_reset_control_get_exclusive(dev, "phy");
733 if (IS_ERR(res->phy_reset))
734 return PTR_ERR(res->phy_reset);
737 res->axi_m_sticky_reset = devm_reset_control_get_exclusive(dev,
739 if (IS_ERR(res->axi_m_sticky_reset))
740 return PTR_ERR(res->axi_m_sticky_reset);
742 res->pipe_sticky_reset = devm_reset_control_get_exclusive(dev,
744 if (IS_ERR(res->pipe_sticky_reset))
745 return PTR_ERR(res->pipe_sticky_reset);
747 res->pwr_reset = devm_reset_control_get_exclusive(dev, "pwr");
748 if (IS_ERR(res->pwr_reset))
749 return PTR_ERR(res->pwr_reset);
751 res->ahb_reset = devm_reset_control_get_exclusive(dev, "ahb");
752 if (IS_ERR(res->ahb_reset))
753 return PTR_ERR(res->ahb_reset);
756 res->phy_ahb_reset = devm_reset_control_get_exclusive(dev, "phy_ahb");
757 if (IS_ERR(res->phy_ahb_reset))
758 return PTR_ERR(res->phy_ahb_reset);
764 static void qcom_pcie_deinit_2_4_0(struct qcom_pcie *pcie)
766 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
768 reset_control_assert(res->axi_m_reset);
769 reset_control_assert(res->axi_s_reset);
770 reset_control_assert(res->pipe_reset);
771 reset_control_assert(res->pipe_sticky_reset);
772 reset_control_assert(res->phy_reset);
773 reset_control_assert(res->phy_ahb_reset);
774 reset_control_assert(res->axi_m_sticky_reset);
775 reset_control_assert(res->pwr_reset);
776 reset_control_assert(res->ahb_reset);
777 clk_bulk_disable_unprepare(res->num_clks, res->clks);
780 static int qcom_pcie_init_2_4_0(struct qcom_pcie *pcie)
782 struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0;
783 struct dw_pcie *pci = pcie->pci;
784 struct device *dev = pci->dev;
788 ret = reset_control_assert(res->axi_m_reset);
790 dev_err(dev, "cannot assert axi master reset\n");
794 ret = reset_control_assert(res->axi_s_reset);
796 dev_err(dev, "cannot assert axi slave reset\n");
800 usleep_range(10000, 12000);
802 ret = reset_control_assert(res->pipe_reset);
804 dev_err(dev, "cannot assert pipe reset\n");
808 ret = reset_control_assert(res->pipe_sticky_reset);
810 dev_err(dev, "cannot assert pipe sticky reset\n");
814 ret = reset_control_assert(res->phy_reset);
816 dev_err(dev, "cannot assert phy reset\n");
820 ret = reset_control_assert(res->phy_ahb_reset);
822 dev_err(dev, "cannot assert phy ahb reset\n");
826 usleep_range(10000, 12000);
828 ret = reset_control_assert(res->axi_m_sticky_reset);
830 dev_err(dev, "cannot assert axi master sticky reset\n");
834 ret = reset_control_assert(res->pwr_reset);
836 dev_err(dev, "cannot assert power reset\n");
840 ret = reset_control_assert(res->ahb_reset);
842 dev_err(dev, "cannot assert ahb reset\n");
846 usleep_range(10000, 12000);
848 ret = reset_control_deassert(res->phy_ahb_reset);
850 dev_err(dev, "cannot deassert phy ahb reset\n");
854 ret = reset_control_deassert(res->phy_reset);
856 dev_err(dev, "cannot deassert phy reset\n");
860 ret = reset_control_deassert(res->pipe_reset);
862 dev_err(dev, "cannot deassert pipe reset\n");
866 ret = reset_control_deassert(res->pipe_sticky_reset);
868 dev_err(dev, "cannot deassert pipe sticky reset\n");
869 goto err_rst_pipe_sticky;
872 usleep_range(10000, 12000);
874 ret = reset_control_deassert(res->axi_m_reset);
876 dev_err(dev, "cannot deassert axi master reset\n");
880 ret = reset_control_deassert(res->axi_m_sticky_reset);
882 dev_err(dev, "cannot deassert axi master sticky reset\n");
883 goto err_rst_axi_m_sticky;
886 ret = reset_control_deassert(res->axi_s_reset);
888 dev_err(dev, "cannot deassert axi slave reset\n");
892 ret = reset_control_deassert(res->pwr_reset);
894 dev_err(dev, "cannot deassert power reset\n");
898 ret = reset_control_deassert(res->ahb_reset);
900 dev_err(dev, "cannot deassert ahb reset\n");
904 usleep_range(10000, 12000);
906 ret = clk_bulk_prepare_enable(res->num_clks, res->clks);
910 /* enable PCIe clocks and resets */
911 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
913 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
915 /* change DBI base address */
916 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
918 /* MAC PHY_POWERDOWN MUX DISABLE */
919 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
921 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
923 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
925 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
927 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
929 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
934 reset_control_assert(res->ahb_reset);
936 reset_control_assert(res->pwr_reset);
938 reset_control_assert(res->axi_s_reset);
940 reset_control_assert(res->axi_m_sticky_reset);
941 err_rst_axi_m_sticky:
942 reset_control_assert(res->axi_m_reset);
944 reset_control_assert(res->pipe_sticky_reset);
946 reset_control_assert(res->pipe_reset);
948 reset_control_assert(res->phy_reset);
950 reset_control_assert(res->phy_ahb_reset);
954 static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie)
956 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
957 struct dw_pcie *pci = pcie->pci;
958 struct device *dev = pci->dev;
960 const char *rst_names[] = { "axi_m", "axi_s", "pipe",
961 "axi_m_sticky", "sticky",
964 res->iface = devm_clk_get(dev, "iface");
965 if (IS_ERR(res->iface))
966 return PTR_ERR(res->iface);
968 res->axi_m_clk = devm_clk_get(dev, "axi_m");
969 if (IS_ERR(res->axi_m_clk))
970 return PTR_ERR(res->axi_m_clk);
972 res->axi_s_clk = devm_clk_get(dev, "axi_s");
973 if (IS_ERR(res->axi_s_clk))
974 return PTR_ERR(res->axi_s_clk);
976 res->ahb_clk = devm_clk_get(dev, "ahb");
977 if (IS_ERR(res->ahb_clk))
978 return PTR_ERR(res->ahb_clk);
980 res->aux_clk = devm_clk_get(dev, "aux");
981 if (IS_ERR(res->aux_clk))
982 return PTR_ERR(res->aux_clk);
984 for (i = 0; i < ARRAY_SIZE(rst_names); i++) {
985 res->rst[i] = devm_reset_control_get(dev, rst_names[i]);
986 if (IS_ERR(res->rst[i]))
987 return PTR_ERR(res->rst[i]);
993 static void qcom_pcie_deinit_2_3_3(struct qcom_pcie *pcie)
995 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
997 clk_disable_unprepare(res->iface);
998 clk_disable_unprepare(res->axi_m_clk);
999 clk_disable_unprepare(res->axi_s_clk);
1000 clk_disable_unprepare(res->ahb_clk);
1001 clk_disable_unprepare(res->aux_clk);
1004 static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie)
1006 struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3;
1007 struct dw_pcie *pci = pcie->pci;
1008 struct device *dev = pci->dev;
1009 u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
1013 for (i = 0; i < ARRAY_SIZE(res->rst); i++) {
1014 ret = reset_control_assert(res->rst[i]);
1016 dev_err(dev, "reset #%d assert failed (%d)\n", i, ret);
1021 usleep_range(2000, 2500);
1023 for (i = 0; i < ARRAY_SIZE(res->rst); i++) {
1024 ret = reset_control_deassert(res->rst[i]);
1026 dev_err(dev, "reset #%d deassert failed (%d)\n", i,
1033 * Don't have a way to see if the reset has completed.
1034 * Wait for some time.
1036 usleep_range(2000, 2500);
1038 ret = clk_prepare_enable(res->iface);
1040 dev_err(dev, "cannot prepare/enable core clock\n");
1044 ret = clk_prepare_enable(res->axi_m_clk);
1046 dev_err(dev, "cannot prepare/enable core clock\n");
1050 ret = clk_prepare_enable(res->axi_s_clk);
1052 dev_err(dev, "cannot prepare/enable axi slave clock\n");
1056 ret = clk_prepare_enable(res->ahb_clk);
1058 dev_err(dev, "cannot prepare/enable ahb clock\n");
1062 ret = clk_prepare_enable(res->aux_clk);
1064 dev_err(dev, "cannot prepare/enable aux clock\n");
1068 writel(SLV_ADDR_SPACE_SZ,
1069 pcie->parf + PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE);
1071 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
1073 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
1075 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
1077 writel(MST_WAKEUP_EN | SLV_WAKEUP_EN | MSTR_ACLK_CGC_DIS
1078 | SLV_ACLK_CGC_DIS | CORE_CLK_CGC_DIS |
1079 AUX_PWR_DET | L23_CLK_RMV_DIS | L1_CLK_RMV_DIS,
1080 pcie->parf + PCIE20_PARF_SYS_CTRL);
1081 writel(0, pcie->parf + PCIE20_PARF_Q2A_FLUSH);
1083 writel(PCI_COMMAND_MASTER, pci->dbi_base + PCI_COMMAND);
1084 writel(DBI_RO_WR_EN, pci->dbi_base + PCIE20_MISC_CONTROL_1_REG);
1085 writel(PCIE_CAP_LINK1_VAL, pci->dbi_base + offset + PCI_EXP_SLTCAP);
1087 val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP);
1088 val &= ~PCI_EXP_LNKCAP_ASPMS;
1089 writel(val, pci->dbi_base + offset + PCI_EXP_LNKCAP);
1091 writel(PCI_EXP_DEVCTL2_COMP_TMOUT_DIS, pci->dbi_base + offset +
1097 clk_disable_unprepare(res->ahb_clk);
1099 clk_disable_unprepare(res->axi_s_clk);
1101 clk_disable_unprepare(res->axi_m_clk);
1103 clk_disable_unprepare(res->iface);
1106 * Not checking for failure, will anyway return
1107 * the original failure in 'ret'.
1109 for (i = 0; i < ARRAY_SIZE(res->rst); i++)
1110 reset_control_assert(res->rst[i]);
1115 static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
1117 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1118 struct dw_pcie *pci = pcie->pci;
1119 struct device *dev = pci->dev;
1122 res->pci_reset = devm_reset_control_get_exclusive(dev, "pci");
1123 if (IS_ERR(res->pci_reset))
1124 return PTR_ERR(res->pci_reset);
1126 res->supplies[0].supply = "vdda";
1127 res->supplies[1].supply = "vddpe-3v3";
1128 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(res->supplies),
1133 res->clks[0].id = "aux";
1134 res->clks[1].id = "cfg";
1135 res->clks[2].id = "bus_master";
1136 res->clks[3].id = "bus_slave";
1137 res->clks[4].id = "slave_q2a";
1138 res->clks[5].id = "tbu";
1140 ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks);
1144 res->pipe_clk = devm_clk_get(dev, "pipe");
1145 return PTR_ERR_OR_ZERO(res->pipe_clk);
1148 static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie)
1150 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1151 struct dw_pcie *pci = pcie->pci;
1152 struct device *dev = pci->dev;
1156 ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
1158 dev_err(dev, "cannot enable regulators\n");
1162 ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks);
1164 goto err_disable_regulators;
1166 ret = reset_control_assert(res->pci_reset);
1168 dev_err(dev, "cannot deassert pci reset\n");
1169 goto err_disable_clocks;
1172 usleep_range(1000, 1500);
1174 ret = reset_control_deassert(res->pci_reset);
1176 dev_err(dev, "cannot deassert pci reset\n");
1177 goto err_disable_clocks;
1180 ret = clk_prepare_enable(res->pipe_clk);
1182 dev_err(dev, "cannot prepare/enable pipe clock\n");
1183 goto err_disable_clocks;
1186 /* configure PCIe to RC mode */
1187 writel(DEVICE_TYPE_RC, pcie->parf + PCIE20_PARF_DEVICE_TYPE);
1189 /* enable PCIe clocks and resets */
1190 val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
1192 writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
1194 /* change DBI base address */
1195 writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
1197 /* MAC PHY_POWERDOWN MUX DISABLE */
1198 val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
1200 writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
1202 val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
1204 writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
1206 if (IS_ENABLED(CONFIG_PCI_MSI)) {
1207 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
1209 writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
1214 clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
1215 err_disable_regulators:
1216 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
1221 static void qcom_pcie_deinit_2_7_0(struct qcom_pcie *pcie)
1223 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1225 clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
1226 regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
1229 static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie)
1231 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1233 return clk_prepare_enable(res->pipe_clk);
1236 static void qcom_pcie_post_deinit_2_7_0(struct qcom_pcie *pcie)
1238 struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
1240 clk_disable_unprepare(res->pipe_clk);
1243 static int qcom_pcie_link_up(struct dw_pcie *pci)
1245 u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
1246 u16 val = readw(pci->dbi_base + offset + PCI_EXP_LNKSTA);
1248 return !!(val & PCI_EXP_LNKSTA_DLLLA);
1251 static int qcom_pcie_host_init(struct pcie_port *pp)
1253 struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
1254 struct qcom_pcie *pcie = to_qcom_pcie(pci);
1257 qcom_ep_reset_assert(pcie);
1259 ret = pcie->ops->init(pcie);
1263 ret = phy_power_on(pcie->phy);
1267 if (pcie->ops->post_init) {
1268 ret = pcie->ops->post_init(pcie);
1270 goto err_disable_phy;
1273 dw_pcie_setup_rc(pp);
1274 dw_pcie_msi_init(pp);
1276 qcom_ep_reset_deassert(pcie);
1278 ret = qcom_pcie_establish_link(pcie);
1284 qcom_ep_reset_assert(pcie);
1285 if (pcie->ops->post_deinit)
1286 pcie->ops->post_deinit(pcie);
1288 phy_power_off(pcie->phy);
1290 pcie->ops->deinit(pcie);
1295 static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
1296 .host_init = qcom_pcie_host_init,
1299 /* Qcom IP rev.: 2.1.0 Synopsys IP rev.: 4.01a */
1300 static const struct qcom_pcie_ops ops_2_1_0 = {
1301 .get_resources = qcom_pcie_get_resources_2_1_0,
1302 .init = qcom_pcie_init_2_1_0,
1303 .deinit = qcom_pcie_deinit_2_1_0,
1304 .ltssm_enable = qcom_pcie_2_1_0_ltssm_enable,
1307 /* Qcom IP rev.: 1.0.0 Synopsys IP rev.: 4.11a */
1308 static const struct qcom_pcie_ops ops_1_0_0 = {
1309 .get_resources = qcom_pcie_get_resources_1_0_0,
1310 .init = qcom_pcie_init_1_0_0,
1311 .deinit = qcom_pcie_deinit_1_0_0,
1312 .ltssm_enable = qcom_pcie_2_1_0_ltssm_enable,
1315 /* Qcom IP rev.: 2.3.2 Synopsys IP rev.: 4.21a */
1316 static const struct qcom_pcie_ops ops_2_3_2 = {
1317 .get_resources = qcom_pcie_get_resources_2_3_2,
1318 .init = qcom_pcie_init_2_3_2,
1319 .post_init = qcom_pcie_post_init_2_3_2,
1320 .deinit = qcom_pcie_deinit_2_3_2,
1321 .post_deinit = qcom_pcie_post_deinit_2_3_2,
1322 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1325 /* Qcom IP rev.: 2.4.0 Synopsys IP rev.: 4.20a */
1326 static const struct qcom_pcie_ops ops_2_4_0 = {
1327 .get_resources = qcom_pcie_get_resources_2_4_0,
1328 .init = qcom_pcie_init_2_4_0,
1329 .deinit = qcom_pcie_deinit_2_4_0,
1330 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1333 /* Qcom IP rev.: 2.3.3 Synopsys IP rev.: 4.30a */
1334 static const struct qcom_pcie_ops ops_2_3_3 = {
1335 .get_resources = qcom_pcie_get_resources_2_3_3,
1336 .init = qcom_pcie_init_2_3_3,
1337 .deinit = qcom_pcie_deinit_2_3_3,
1338 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1341 /* Qcom IP rev.: 2.7.0 Synopsys IP rev.: 4.30a */
1342 static const struct qcom_pcie_ops ops_2_7_0 = {
1343 .get_resources = qcom_pcie_get_resources_2_7_0,
1344 .init = qcom_pcie_init_2_7_0,
1345 .deinit = qcom_pcie_deinit_2_7_0,
1346 .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
1347 .post_init = qcom_pcie_post_init_2_7_0,
1348 .post_deinit = qcom_pcie_post_deinit_2_7_0,
1351 static const struct dw_pcie_ops dw_pcie_ops = {
1352 .link_up = qcom_pcie_link_up,
1355 static int qcom_pcie_probe(struct platform_device *pdev)
1357 struct device *dev = &pdev->dev;
1358 struct resource *res;
1359 struct pcie_port *pp;
1360 struct dw_pcie *pci;
1361 struct qcom_pcie *pcie;
1364 pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
1368 pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
1372 pm_runtime_enable(dev);
1373 ret = pm_runtime_get_sync(dev);
1375 goto err_pm_runtime_put;
1378 pci->ops = &dw_pcie_ops;
1383 pcie->ops = of_device_get_match_data(dev);
1385 pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_HIGH);
1386 if (IS_ERR(pcie->reset)) {
1387 ret = PTR_ERR(pcie->reset);
1388 goto err_pm_runtime_put;
1391 pcie->parf = devm_platform_ioremap_resource_byname(pdev, "parf");
1392 if (IS_ERR(pcie->parf)) {
1393 ret = PTR_ERR(pcie->parf);
1394 goto err_pm_runtime_put;
1397 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
1398 pci->dbi_base = devm_pci_remap_cfg_resource(dev, res);
1399 if (IS_ERR(pci->dbi_base)) {
1400 ret = PTR_ERR(pci->dbi_base);
1401 goto err_pm_runtime_put;
1404 pcie->elbi = devm_platform_ioremap_resource_byname(pdev, "elbi");
1405 if (IS_ERR(pcie->elbi)) {
1406 ret = PTR_ERR(pcie->elbi);
1407 goto err_pm_runtime_put;
1410 pcie->phy = devm_phy_optional_get(dev, "pciephy");
1411 if (IS_ERR(pcie->phy)) {
1412 ret = PTR_ERR(pcie->phy);
1413 goto err_pm_runtime_put;
1416 ret = pcie->ops->get_resources(pcie);
1418 goto err_pm_runtime_put;
1420 pp->ops = &qcom_pcie_dw_ops;
1422 if (IS_ENABLED(CONFIG_PCI_MSI)) {
1423 pp->msi_irq = platform_get_irq_byname(pdev, "msi");
1424 if (pp->msi_irq < 0) {
1426 goto err_pm_runtime_put;
1430 ret = phy_init(pcie->phy);
1432 pm_runtime_disable(&pdev->dev);
1433 goto err_pm_runtime_put;
1436 platform_set_drvdata(pdev, pcie);
1438 ret = dw_pcie_host_init(pp);
1440 dev_err(dev, "cannot initialize host\n");
1441 pm_runtime_disable(&pdev->dev);
1442 goto err_pm_runtime_put;
1448 pm_runtime_put(dev);
1449 pm_runtime_disable(dev);
1454 static const struct of_device_id qcom_pcie_match[] = {
1455 { .compatible = "qcom,pcie-apq8084", .data = &ops_1_0_0 },
1456 { .compatible = "qcom,pcie-ipq8064", .data = &ops_2_1_0 },
1457 { .compatible = "qcom,pcie-ipq8064-v2", .data = &ops_2_1_0 },
1458 { .compatible = "qcom,pcie-apq8064", .data = &ops_2_1_0 },
1459 { .compatible = "qcom,pcie-msm8996", .data = &ops_2_3_2 },
1460 { .compatible = "qcom,pcie-ipq8074", .data = &ops_2_3_3 },
1461 { .compatible = "qcom,pcie-ipq4019", .data = &ops_2_4_0 },
1462 { .compatible = "qcom,pcie-qcs404", .data = &ops_2_4_0 },
1463 { .compatible = "qcom,pcie-sdm845", .data = &ops_2_7_0 },
1467 static void qcom_fixup_class(struct pci_dev *dev)
1469 dev->class = PCI_CLASS_BRIDGE_PCI << 8;
1471 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0101, qcom_fixup_class);
1472 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0104, qcom_fixup_class);
1473 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0106, qcom_fixup_class);
1474 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0107, qcom_fixup_class);
1475 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0302, qcom_fixup_class);
1476 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1000, qcom_fixup_class);
1477 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1001, qcom_fixup_class);
1479 static struct platform_driver qcom_pcie_driver = {
1480 .probe = qcom_pcie_probe,
1482 .name = "qcom-pcie",
1483 .suppress_bind_attrs = true,
1484 .of_match_table = qcom_pcie_match,
1487 builtin_platform_driver(qcom_pcie_driver);