1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * DA8xx USB
4 */
5 #include <linux/clk-provider.h>
6 #include <linux/delay.h>
7 #include <linux/dma-mapping.h>
8 #include <linux/init.h>
9 #include <linux/mfd/da8xx-cfgchip.h>
10 #include <linux/mfd/syscon.h>
11 #include <linux/phy/phy.h>
12 #include <linux/platform_data/clk-da8xx-cfgchip.h>
13 #include <linux/platform_data/phy-da8xx-usb.h>
14 #include <linux/platform_data/usb-davinci.h>
15 #include <linux/platform_device.h>
16 #include <linux/usb/musb.h>
17
18 #include "common.h"
19 #include "cputype.h"
20 #include "da8xx.h"
21 #include "irqs.h"
22
23 #define DA8XX_USB0_BASE 0x01e00000
24 #define DA8XX_USB1_BASE 0x01e25000
25
26 #ifndef CONFIG_COMMON_CLK
27 static struct clk *usb20_clk;
28 #endif
29
30 static struct da8xx_usb_phy_platform_data da8xx_usb_phy_pdata;
31
32 static struct platform_device da8xx_usb_phy = {
33 .name = "da8xx-usb-phy",
34 .id = -1,
35 .dev = {
36 /*
37 * Setting init_name so that clock lookup will work in
38 * da8xx_register_usb11_phy_clk() even if this device is not
39 * registered yet.
40 */
41 .init_name = "da8xx-usb-phy",
42 .platform_data = &da8xx_usb_phy_pdata,
43 },
44 };
45
da8xx_register_usb_phy(void)46 int __init da8xx_register_usb_phy(void)
47 {
48 da8xx_usb_phy_pdata.cfgchip = da8xx_get_cfgchip();
49
50 return platform_device_register(&da8xx_usb_phy);
51 }
52
53 static struct musb_hdrc_config musb_config = {
54 .multipoint = true,
55 .num_eps = 5,
56 .ram_bits = 10,
57 };
58
59 static struct musb_hdrc_platform_data usb_data = {
60 /* OTG requires a Mini-AB connector */
61 .mode = MUSB_OTG,
62 .clock = "usb20",
63 .config = &musb_config,
64 };
65
66 static struct resource da8xx_usb20_resources[] = {
67 {
68 .start = DA8XX_USB0_BASE,
69 .end = DA8XX_USB0_BASE + SZ_64K - 1,
70 .flags = IORESOURCE_MEM,
71 },
72 {
73 .start = DAVINCI_INTC_IRQ(IRQ_DA8XX_USB_INT),
74 .flags = IORESOURCE_IRQ,
75 .name = "mc",
76 },
77 };
78
79 static u64 usb_dmamask = DMA_BIT_MASK(32);
80
81 static struct platform_device da8xx_usb20_dev = {
82 .name = "musb-da8xx",
83 .id = -1,
84 .dev = {
85 .platform_data = &usb_data,
86 .dma_mask = &usb_dmamask,
87 .coherent_dma_mask = DMA_BIT_MASK(32),
88 },
89 .resource = da8xx_usb20_resources,
90 .num_resources = ARRAY_SIZE(da8xx_usb20_resources),
91 };
92
da8xx_register_usb20(unsigned int mA,unsigned int potpgt)93 int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
94 {
95 usb_data.power = mA > 510 ? 255 : mA / 2;
96 usb_data.potpgt = (potpgt + 1) / 2;
97
98 return platform_device_register(&da8xx_usb20_dev);
99 }
100
101 static struct resource da8xx_usb11_resources[] = {
102 [0] = {
103 .start = DA8XX_USB1_BASE,
104 .end = DA8XX_USB1_BASE + SZ_4K - 1,
105 .flags = IORESOURCE_MEM,
106 },
107 [1] = {
108 .start = DAVINCI_INTC_IRQ(IRQ_DA8XX_IRQN),
109 .end = DAVINCI_INTC_IRQ(IRQ_DA8XX_IRQN),
110 .flags = IORESOURCE_IRQ,
111 },
112 };
113
114 static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
115
116 static struct platform_device da8xx_usb11_device = {
117 .name = "ohci-da8xx",
118 .id = -1,
119 .dev = {
120 .dma_mask = &da8xx_usb11_dma_mask,
121 .coherent_dma_mask = DMA_BIT_MASK(32),
122 },
123 .num_resources = ARRAY_SIZE(da8xx_usb11_resources),
124 .resource = da8xx_usb11_resources,
125 };
126
da8xx_register_usb11(struct da8xx_ohci_root_hub * pdata)127 int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
128 {
129 da8xx_usb11_device.dev.platform_data = pdata;
130 return platform_device_register(&da8xx_usb11_device);
131 }
132
133 static struct platform_device da8xx_usb_phy_clks_device = {
134 .name = "da830-usb-phy-clks",
135 .id = -1,
136 };
137
da8xx_register_usb_phy_clocks(void)138 int __init da8xx_register_usb_phy_clocks(void)
139 {
140 struct da8xx_cfgchip_clk_platform_data pdata;
141
142 pdata.cfgchip = da8xx_get_cfgchip();
143 da8xx_usb_phy_clks_device.dev.platform_data = &pdata;
144
145 return platform_device_register(&da8xx_usb_phy_clks_device);
146 }
147