1 /*
2 File: include/asm-arm/hc_sl811-hw.h
3 */
4
5 /* The base_addr, data_reg_addr, and irq number are board specific.
6 * The current values are design to run on the Accelent SA1110 IDP
7 * NOTE: values need to modify for different development boards
8 */
9
10 #define SIZEOF_IO_REGION 256 /* Size for request/release region */
11 static int base_addr = 0xd3800000;
12 static int data_reg_addr = 0xd3810000;
13 static int irq = 34; /* Also change SL811_SET_GPDR! */
14 static int gprd = 13; /* also change irq !!! */
15
16 MODULE_PARM (base_addr, "i");
17 MODULE_PARM_DESC (base_addr, "sl811 base address 0xd3800000");
18 MODULE_PARM (data_reg_addr, "i");
19 MODULE_PARM_DESC (data_reg_addr, "sl811 data register address 0xd3810000");
20 MODULE_PARM (irq, "i");
21 MODULE_PARM_DESC (irq, "IRQ 34 (default)");
22 MODULE_PARM(gprd,"i");
23 MODULE_PARM_DESC(gprd,"sl811 GPRD port 13(default)");
24
25 /*
26 * Low level: Read from Data port [arm]
27 */
sl811_read_data(hcipriv_t * hp)28 static __u8 inline sl811_read_data (hcipriv_t *hp)
29 {
30 __u8 data;
31 data = readb (hp->hcport2);
32 rmb ();
33 return (data);
34 }
35
36 /*
37 * Low level: Write to index register [arm]
38 */
sl811_write_index(hcipriv_t * hp,__u8 index)39 static void inline sl811_write_index (hcipriv_t *hp, __u8 index)
40 {
41 writeb (offset, hp->hcport);
42 wmb ();
43 }
44
45 /*
46 * Low level: Write to Data port [arm]
47 */
sl811_write_data(hcipriv_t * hp,__u8 data)48 static void inline sl811_write_data (hcipriv_t *hp, __u8 data)
49 {
50 writeb (data, hp->hcport2);
51 }
52
53 /*
54 * Low level: Write to index register and data port [arm]
55 */
sl811_write_index_data(hcipriv_t * hp,__u8 index,__u8 data)56 static void inline sl811_write_index_data (hcipriv_t *hp, __u8 index, __u8 data)
57 {
58 writeb (offset, hp->hcport);
59 writeb (data, hp->hcport2);
60 wmb ();
61 }
62
63 /*****************************************************************
64 *
65 * Function Name: init_irq [arm]
66 *
67 * This function is board specific. It sets up the interrupt to
68 * be an edge trigger and trigger on the rising edge
69 *
70 * Input: none
71 *
72 * Return value : none
73 *
74 *****************************************************************/
init_irq(void)75 static void inline init_irq (void)
76 {
77 GPDR &= ~(1 << gprd);
78 set_GPIO_IRQ_edge (1 << gprd, GPIO_RISING_EDGE);
79 }
80
81 /*****************************************************************
82 *
83 * Function Name: release_regions [arm]
84 *
85 * This function is board specific. It frees all io address.
86 *
87 * Input: hcipriv_t *
88 *
89 * Return value : none
90 *
91 *****************************************************************/
release_regions(hcipriv_t * hp)92 static void inline release_regions (hcipriv_t *hp)
93 {
94 if (hp->hcport > 0) {
95 release_region (hp->hcport, SIZEOF_IO_REGION);
96 hp->hcport = 0;
97 }
98
99 if (hp->hcport2 > 0) {
100 release_region (hp->hcport2, SIZEOF_IO_REGION);
101 hp->hcport2 = 0;
102 }
103 }
104
105 /*****************************************************************
106 *
107 * Function Name: request_regions [arm]
108 *
109 * This function is board specific. It request all io address and
110 * maps into memory (if can).
111 *
112 * Input: hcipriv_t *
113 *
114 * Return value : 0 = OK
115 *
116 *****************************************************************/
request_regions(hcipriv_t * hp,int addr1,int addr2)117 static int inline request_regions (hcipriv_t *hp, int addr1, int addr2)
118 {
119 if (!request_region (addr1, SIZEOF_IO_REGION, "SL811 USB HOST")) {
120 DBGERR ("request address %d failed", addr1);
121 return -EBUSY;
122 }
123 hp->hcport = addr1;
124 if (!hp->hcport) {
125 DBGERR ("Error mapping SL811 Memory 0x%x", addr1);
126 }
127
128 if (!request_region (addr2, SIZEOF_IO_REGION, "SL811 USB HOST")) {
129 DBGERR ("request address %d failed", addr2);
130 return -EBUSY;
131 }
132 hp->hcport2 = addr2;
133 if (!hp->hcport2) {
134 DBGERR ("Error mapping SL811 Memory 0x%x", addr2);
135 }
136
137 return 0;
138 }
139
140