1 /*-
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2008 Atheros Communications, Inc.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "opt_ah.h"
20
21 #if (AH_SUPPORT_2316 || AH_SUPPORT_2317)
22
23 #include "ah.h"
24 #include "ah_internal.h"
25 #include "ah_devid.h"
26
27 #include "ar5312/ar5312.h"
28 #include "ar5312/ar5312reg.h"
29 #include "ar5312/ar5312phy.h"
30
31 #define AR_NUM_GPIO 7 /* 6 GPIO pins */
32 #define AR5315_GPIOD_MASK 0x0000007F /* GPIO data reg r/w mask */
33
34 /*
35 * Configure GPIO Output lines
36 */
37 HAL_BOOL
ar5315GpioCfgOutput(struct ath_hal * ah,uint32_t gpio,HAL_GPIO_MUX_TYPE type)38 ar5315GpioCfgOutput(struct ath_hal *ah, uint32_t gpio, HAL_GPIO_MUX_TYPE type)
39 {
40 uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
41
42 HALASSERT(gpio < AR_NUM_GPIO);
43
44 OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODIR,
45 (OS_REG_READ(ah, gpioOffset+AR5315_GPIODIR) &~ AR5315_GPIODIR_M(gpio))
46 | AR5315_GPIODIR_O(gpio));
47
48 return AH_TRUE;
49 }
50
51 /*
52 * Configure GPIO Input lines
53 */
54 HAL_BOOL
ar5315GpioCfgInput(struct ath_hal * ah,uint32_t gpio)55 ar5315GpioCfgInput(struct ath_hal *ah, uint32_t gpio)
56 {
57 uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
58
59 HALASSERT(gpio < AR_NUM_GPIO);
60
61 OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODIR,
62 (OS_REG_READ(ah, gpioOffset+AR5315_GPIODIR) &~ AR5315_GPIODIR_M(gpio))
63 | AR5315_GPIODIR_I(gpio));
64
65 return AH_TRUE;
66 }
67
68 /*
69 * Once configured for I/O - set output lines
70 */
71 HAL_BOOL
ar5315GpioSet(struct ath_hal * ah,uint32_t gpio,uint32_t val)72 ar5315GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val)
73 {
74 uint32_t reg;
75 uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
76
77 HALASSERT(gpio < AR_NUM_GPIO);
78
79 reg = OS_REG_READ(ah, gpioOffset+AR5315_GPIODO);
80 reg &= ~(1 << gpio);
81 reg |= (val&1) << gpio;
82
83 OS_REG_WRITE(ah, gpioOffset+AR5315_GPIODO, reg);
84 return AH_TRUE;
85 }
86
87 /*
88 * Once configured for I/O - get input lines
89 */
90 uint32_t
ar5315GpioGet(struct ath_hal * ah,uint32_t gpio)91 ar5315GpioGet(struct ath_hal *ah, uint32_t gpio)
92 {
93 uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
94
95 if (gpio < AR_NUM_GPIO) {
96 uint32_t val = OS_REG_READ(ah, gpioOffset+AR5315_GPIODI);
97 val = ((val & AR5315_GPIOD_MASK) >> gpio) & 0x1;
98 return val;
99 } else {
100 return 0xffffffff;
101 }
102 }
103
104 /*
105 * Set the GPIO Interrupt
106 */
107 void
ar5315GpioSetIntr(struct ath_hal * ah,u_int gpio,uint32_t ilevel)108 ar5315GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel)
109 {
110 uint32_t val;
111 uint32_t gpioOffset = (AR5315_GPIO_BASE - ((uint32_t) ah->ah_sh));
112
113 /* XXX bounds check gpio */
114 val = OS_REG_READ(ah, gpioOffset+AR5315_GPIOINT);
115 val &= ~(AR5315_GPIOINT_M | AR5315_GPIOINTLVL_M);
116 val |= gpio << AR5315_GPIOINT_S;
117 if (ilevel)
118 val |= 2 << AR5315_GPIOINTLVL_S; /* interrupt on pin high */
119 else
120 val |= 1 << AR5315_GPIOINTLVL_S; /* interrupt on pin low */
121
122 /* Don't need to change anything for low level interrupt. */
123 OS_REG_WRITE(ah, gpioOffset+AR5315_GPIOINT, val);
124
125 /* Change the interrupt mask. */
126 (void) ar5212SetInterrupts(ah, AH5212(ah)->ah_maskReg | HAL_INT_GPIO);
127 }
128
129 #endif /* AH_SUPPORT_2316 || AH_SUPPORT_2317 */
130