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1 /******************************************************************************
2  *
3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of version 2 of the GNU General Public License as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12  * more details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17  *
18  ******************************************************************************/
19 
20 #include <pwrseqcmd.h>
21 #include <usb_ops_linux.h>
22 
23 /* This routine deals with the Power Configuration CMDs parsing
24  * for RTL8723/RTL8188E Series IC.
25  */
rtl88eu_pwrseqcmdparsing(struct adapter * padapter,u8 cut_vers,u8 fab_vers,u8 ifacetype,struct wl_pwr_cfg pwrseqcmd[])26 u8 rtl88eu_pwrseqcmdparsing(struct adapter *padapter, u8 cut_vers, u8 fab_vers,
27 			    u8 ifacetype, struct wl_pwr_cfg pwrseqcmd[])
28 {
29 	struct wl_pwr_cfg pwrcfgcmd = {0};
30 	u8 poll_bit = false;
31 	u32 aryidx = 0;
32 	u8 value = 0;
33 	u32 offset = 0;
34 	u32 poll_count = 0; /*  polling autoload done. */
35 	u32 max_poll_count = 5000;
36 
37 	do {
38 		pwrcfgcmd = pwrseqcmd[aryidx];
39 
40 		RT_TRACE(_module_hal_init_c_ , _drv_info_,
41 			 ("rtl88eu_pwrseqcmdparsing: offset(%#x) cut_msk(%#x)"
42 			  "fab_msk(%#x) interface_msk(%#x) base(%#x) cmd(%#x)"
43 			  "msk(%#x) value(%#x)\n",
44 			 GET_PWR_CFG_OFFSET(pwrcfgcmd),
45 			 GET_PWR_CFG_CUT_MASK(pwrcfgcmd),
46 			 GET_PWR_CFG_FAB_MASK(pwrcfgcmd),
47 			 GET_PWR_CFG_INTF_MASK(pwrcfgcmd),
48 			 GET_PWR_CFG_BASE(pwrcfgcmd),
49 			 GET_PWR_CFG_CMD(pwrcfgcmd),
50 			 GET_PWR_CFG_MASK(pwrcfgcmd),
51 			 GET_PWR_CFG_VALUE(pwrcfgcmd)));
52 
53 		/* Only Handle the command whose FAB, CUT, and Interface are matched */
54 		if ((GET_PWR_CFG_FAB_MASK(pwrcfgcmd) & fab_vers) &&
55 		    (GET_PWR_CFG_CUT_MASK(pwrcfgcmd) & cut_vers) &&
56 		    (GET_PWR_CFG_INTF_MASK(pwrcfgcmd) & ifacetype)) {
57 			switch (GET_PWR_CFG_CMD(pwrcfgcmd)) {
58 			case PWR_CMD_READ:
59 				RT_TRACE(_module_hal_init_c_, _drv_info_,
60 					 ("rtl88eu_pwrseqcmdparsing: PWR_CMD_READ\n"));
61 				break;
62 			case PWR_CMD_WRITE:
63 				RT_TRACE(_module_hal_init_c_, _drv_info_,
64 					 ("rtl88eu_pwrseqcmdparsing: PWR_CMD_WRITE\n"));
65 				offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
66 
67 				/*  Read the value from system register */
68 				value = usb_read8(padapter, offset);
69 
70 				value &= ~(GET_PWR_CFG_MASK(pwrcfgcmd));
71 				value |= (GET_PWR_CFG_VALUE(pwrcfgcmd) &
72 					  GET_PWR_CFG_MASK(pwrcfgcmd));
73 
74 				/*  Write the value back to system register */
75 				usb_write8(padapter, offset, value);
76 				break;
77 			case PWR_CMD_POLLING:
78 				RT_TRACE(_module_hal_init_c_, _drv_info_,
79 					 ("rtl88eu_pwrseqcmdparsing: PWR_CMD_POLLING\n"));
80 
81 				poll_bit = false;
82 				offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
83 				do {
84 					value = usb_read8(padapter, offset);
85 					value &= GET_PWR_CFG_MASK(pwrcfgcmd);
86 
87 					if (value == (GET_PWR_CFG_VALUE(pwrcfgcmd) &
88 						      GET_PWR_CFG_MASK(pwrcfgcmd)))
89 						poll_bit = true;
90 					else
91 						udelay(10);
92 
93 					if (poll_count++ > max_poll_count) {
94 						DBG_88E("Fail to polling Offset[%#x]\n", offset);
95 						return false;
96 					}
97 				} while (!poll_bit);
98 				break;
99 			case PWR_CMD_DELAY:
100 				RT_TRACE(_module_hal_init_c_, _drv_info_,
101 					 ("rtl88eu_pwrseqcmdparsing: PWR_CMD_DELAY\n"));
102 				if (GET_PWR_CFG_VALUE(pwrcfgcmd) == PWRSEQ_DELAY_US)
103 					udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd));
104 				else
105 					udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd)*1000);
106 				break;
107 			case PWR_CMD_END:
108 				/* When this command is parsed, end the process */
109 				RT_TRACE(_module_hal_init_c_, _drv_info_,
110 					 ("rtl88eu_pwrseqcmdparsing: PWR_CMD_END\n"));
111 				return true;
112 				break;
113 			default:
114 				RT_TRACE(_module_hal_init_c_, _drv_err_,
115 					 ("rtl88eu_pwrseqcmdparsing: Unknown CMD!!\n"));
116 				break;
117 			}
118 		}
119 
120 		aryidx++;/* Add Array Index */
121 	} while (1);
122 	return true;
123 }
124