FreeCalypso > hg > freecalypso-sw

annotate target-utils/libcommon/spidrv.c @ 742:3501bc16450a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rr_forp.c compiles
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 05 Oct 2014 22:13:16 +0000
parents e60aecf23970
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
389
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /* Driver for SPI Master Controller inside TI Calypso */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 /* lifted from OsmocomBB and ported to FreeCalypso target-utils environment */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 /* (C) 2010 by Harald Welte <laforge@gnumonks.org>
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 *
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 * All Rights Reserved
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 *
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 * This program is free software; you can redistribute it and/or modify
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 * it under the terms of the GNU General Public License as published by
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 * the Free Software Foundation; either version 2 of the License, or
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 * (at your option) any later version.
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12 *
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 * This program is distributed in the hope that it will be useful,
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16 * GNU General Public License for more details.
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 *
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 * You should have received a copy of the GNU General Public License along
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 * with this program; if not, write to the Free Software Foundation, Inc.,
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 *
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 #include "types.h"
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 #define ASIC_CONF_REG (*(volatile u16 *) 0xFFFEF008)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 struct spi_regs {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 u16 reg_set1;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 u16 reg_set2;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 u16 reg_ctrl;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 u16 reg_status;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 u16 reg_tx_lsb;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 u16 reg_tx_msb;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 u16 reg_rx_lsb;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 u16 reg_rx_msb;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 };
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 #define SPI_REGS (*(volatile struct spi_regs *) 0xFFFE3000)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 #define BASE_ADDR_SPI 0xfffe3000
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 #define SPI_REG(n) (BASE_ADDR_SPI+(n))
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 #define SPI_SET1_EN_CLK (1 << 0)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 #define SPI_SET1_WR_IRQ_DIS (1 << 4)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 #define SPI_SET1_RDWR_IRQ_DIS (1 << 5)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 #define SPI_CTRL_RDWR (1 << 0)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 #define SPI_CTRL_WR (1 << 1)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 #define SPI_CTRL_NB_SHIFT 2
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51 #define SPI_CTRL_AD_SHIFT 7
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 #define SPI_STATUS_RE (1 << 0) /* Read End */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 #define SPI_STATUS_WE (1 << 1) /* Write End */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 spi_init()
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58 static int initdone;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 if (initdone)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
61 return(0);
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 ASIC_CONF_REG |= 0x6000;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
63 SPI_REGS.reg_set1 = SPI_SET1_EN_CLK | SPI_SET1_WR_IRQ_DIS |
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
64 SPI_SET1_RDWR_IRQ_DIS;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
65 SPI_REGS.reg_set2 = 0x0001;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
66 initdone = 1;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
67 return(1);
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
68 }
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
69
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
70 spi_xfer(dev_idx, bitlen, dout, din)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
71 void *dout, *din;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
72 {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
73 int bytes_per_xfer;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
74 u16 reg_status, reg_ctrl = 0;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
75 u32 tmp;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
76
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
77 if (bitlen <= 0)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
78 return 0;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
79
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
80 if (bitlen > 32)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
81 return -1;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
82
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
83 if (dev_idx > 4)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
84 return -1;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
85
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
86 bytes_per_xfer = bitlen / 8;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
87 if (bitlen % 8)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
88 bytes_per_xfer ++;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
89
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
90 reg_ctrl |= (bitlen - 1) << SPI_CTRL_NB_SHIFT;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
91 reg_ctrl |= (dev_idx & 0x7) << SPI_CTRL_AD_SHIFT;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
92
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
93 if (bitlen <= 8) {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
94 tmp = *(u8 *)dout;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
95 tmp <<= 24 + (8-bitlen); /* align to MSB */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
96 } else if (bitlen <= 16) {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
97 tmp = *(u16 *)dout;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
98 tmp <<= 16 + (16-bitlen); /* align to MSB */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
99 } else {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
100 tmp = *(u32 *)dout;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
101 tmp <<= (32-bitlen); /* align to MSB */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
102 }
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
103
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
104 /* fill transmit registers */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
105 SPI_REGS.reg_tx_msb = tmp >> 16;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
106 SPI_REGS.reg_tx_lsb = tmp;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
107
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
108 /* initiate transfer */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
109 if (din)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
110 reg_ctrl |= SPI_CTRL_RDWR;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
111 else
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
112 reg_ctrl |= SPI_CTRL_WR;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
113 SPI_REGS.reg_ctrl = reg_ctrl;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
114
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
115 /* wait until the transfer is complete */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
116 while (1) {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
117 reg_status = SPI_REGS.reg_status;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
118 if (din && (reg_status & SPI_STATUS_RE))
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
119 break;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
120 else if (reg_status & SPI_STATUS_WE)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
121 break;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
122 }
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
123 /* FIXME: calibrate how much delay we really need (seven 13MHz cycles) */
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
124 osmo_delay_ms(1);
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
125
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
126 if (din) {
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
127 tmp = SPI_REGS.reg_rx_msb << 16;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
128 tmp |= SPI_REGS.reg_rx_lsb;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
129
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
130 if (bitlen <= 8)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
131 *(u8 *)din = tmp & 0xff;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
132 else if (bitlen <= 16)
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
133 *(u16 *)din = tmp & 0xffff;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
134 else
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
135 *(u32 *)din = tmp;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
136 }
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
137
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
138 return 0;
e60aecf23970 target-utils: ABB operations implemented (ported from OsmocomBB),
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
139 }