Merge tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[linux-2.6-microblaze.git] / drivers / clk / mediatek / clk-mt7629-hif.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2018 MediaTek Inc.
4  * Author: Wenzhen Yu <Wenzhen Yu@mediatek.com>
5  *         Ryder Lee <ryder.lee@mediatek.com>
6  */
7
8 #include <linux/clk-provider.h>
9 #include <linux/of.h>
10 #include <linux/of_address.h>
11 #include <linux/of_device.h>
12 #include <linux/platform_device.h>
13
14 #include "clk-mtk.h"
15 #include "clk-gate.h"
16
17 #include <dt-bindings/clock/mt7629-clk.h>
18
19 #define GATE_PCIE(_id, _name, _parent, _shift) {        \
20                 .id = _id,                              \
21                 .name = _name,                          \
22                 .parent_name = _parent,                 \
23                 .regs = &pcie_cg_regs,                  \
24                 .shift = _shift,                        \
25                 .ops = &mtk_clk_gate_ops_no_setclr_inv, \
26         }
27
28 #define GATE_SSUSB(_id, _name, _parent, _shift) {       \
29                 .id = _id,                              \
30                 .name = _name,                          \
31                 .parent_name = _parent,                 \
32                 .regs = &ssusb_cg_regs,                 \
33                 .shift = _shift,                        \
34                 .ops = &mtk_clk_gate_ops_no_setclr_inv, \
35         }
36
37 static const struct mtk_gate_regs pcie_cg_regs = {
38         .set_ofs = 0x30,
39         .clr_ofs = 0x30,
40         .sta_ofs = 0x30,
41 };
42
43 static const struct mtk_gate_regs ssusb_cg_regs = {
44         .set_ofs = 0x30,
45         .clr_ofs = 0x30,
46         .sta_ofs = 0x30,
47 };
48
49 static const struct mtk_gate ssusb_clks[] = {
50         GATE_SSUSB(CLK_SSUSB_U2_PHY_1P_EN, "ssusb_u2_phy_1p",
51                    "to_u2_phy_1p", 0),
52         GATE_SSUSB(CLK_SSUSB_U2_PHY_EN, "ssusb_u2_phy_en", "to_u2_phy", 1),
53         GATE_SSUSB(CLK_SSUSB_REF_EN, "ssusb_ref_en", "to_usb3_ref", 5),
54         GATE_SSUSB(CLK_SSUSB_SYS_EN, "ssusb_sys_en", "to_usb3_sys", 6),
55         GATE_SSUSB(CLK_SSUSB_MCU_EN, "ssusb_mcu_en", "to_usb3_mcu", 7),
56         GATE_SSUSB(CLK_SSUSB_DMA_EN, "ssusb_dma_en", "to_usb3_dma", 8),
57 };
58
59 static const struct mtk_gate pcie_clks[] = {
60         GATE_PCIE(CLK_PCIE_P1_AUX_EN, "pcie_p1_aux_en", "p1_1mhz", 12),
61         GATE_PCIE(CLK_PCIE_P1_OBFF_EN, "pcie_p1_obff_en", "free_run_4mhz", 13),
62         GATE_PCIE(CLK_PCIE_P1_AHB_EN, "pcie_p1_ahb_en", "from_top_ahb", 14),
63         GATE_PCIE(CLK_PCIE_P1_AXI_EN, "pcie_p1_axi_en", "from_top_axi", 15),
64         GATE_PCIE(CLK_PCIE_P1_MAC_EN, "pcie_p1_mac_en", "pcie1_mac_en", 16),
65         GATE_PCIE(CLK_PCIE_P1_PIPE_EN, "pcie_p1_pipe_en", "pcie1_pipe_en", 17),
66         GATE_PCIE(CLK_PCIE_P0_AUX_EN, "pcie_p0_aux_en", "p0_1mhz", 18),
67         GATE_PCIE(CLK_PCIE_P0_OBFF_EN, "pcie_p0_obff_en", "free_run_4mhz", 19),
68         GATE_PCIE(CLK_PCIE_P0_AHB_EN, "pcie_p0_ahb_en", "from_top_ahb", 20),
69         GATE_PCIE(CLK_PCIE_P0_AXI_EN, "pcie_p0_axi_en", "from_top_axi", 21),
70         GATE_PCIE(CLK_PCIE_P0_MAC_EN, "pcie_p0_mac_en", "pcie0_mac_en", 22),
71         GATE_PCIE(CLK_PCIE_P0_PIPE_EN, "pcie_p0_pipe_en", "pcie0_pipe_en", 23),
72 };
73
74 static int clk_mt7629_ssusbsys_init(struct platform_device *pdev)
75 {
76         struct clk_onecell_data *clk_data;
77         struct device_node *node = pdev->dev.of_node;
78         int r;
79
80         clk_data = mtk_alloc_clk_data(CLK_SSUSB_NR_CLK);
81
82         mtk_clk_register_gates(node, ssusb_clks, ARRAY_SIZE(ssusb_clks),
83                                clk_data);
84
85         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
86         if (r)
87                 dev_err(&pdev->dev,
88                         "could not register clock provider: %s: %d\n",
89                         pdev->name, r);
90
91         mtk_register_reset_controller(node, 1, 0x34);
92
93         return r;
94 }
95
96 static int clk_mt7629_pciesys_init(struct platform_device *pdev)
97 {
98         struct clk_onecell_data *clk_data;
99         struct device_node *node = pdev->dev.of_node;
100         int r;
101
102         clk_data = mtk_alloc_clk_data(CLK_PCIE_NR_CLK);
103
104         mtk_clk_register_gates(node, pcie_clks, ARRAY_SIZE(pcie_clks),
105                                clk_data);
106
107         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
108         if (r)
109                 dev_err(&pdev->dev,
110                         "could not register clock provider: %s: %d\n",
111                         pdev->name, r);
112
113         mtk_register_reset_controller(node, 1, 0x34);
114
115         return r;
116 }
117
118 static const struct of_device_id of_match_clk_mt7629_hif[] = {
119         {
120                 .compatible = "mediatek,mt7629-pciesys",
121                 .data = clk_mt7629_pciesys_init,
122         }, {
123                 .compatible = "mediatek,mt7629-ssusbsys",
124                 .data = clk_mt7629_ssusbsys_init,
125         }, {
126                 /* sentinel */
127         }
128 };
129
130 static int clk_mt7629_hif_probe(struct platform_device *pdev)
131 {
132         int (*clk_init)(struct platform_device *);
133         int r;
134
135         clk_init = of_device_get_match_data(&pdev->dev);
136         if (!clk_init)
137                 return -EINVAL;
138
139         r = clk_init(pdev);
140         if (r)
141                 dev_err(&pdev->dev,
142                         "could not register clock provider: %s: %d\n",
143                         pdev->name, r);
144
145         return r;
146 }
147
148 static struct platform_driver clk_mt7629_hif_drv = {
149         .probe = clk_mt7629_hif_probe,
150         .driver = {
151                 .name = "clk-mt7629-hif",
152                 .of_match_table = of_match_clk_mt7629_hif,
153         },
154 };
155
156 builtin_platform_driver(clk_mt7629_hif_drv);