关于ax88796b的板级驱动

zhaohui293

我在board-da850-evm.c文件增加ax88796b的板级驱动:static struct resource ax88796b_resources[] = {
' u9 a2 ]2 }1 p* M6 Z, V        [0] = {
* V0 d6 S% N3 A2 \3 Q                .start = DA8XX_AEMIF_CS5_BASE,
                .end   = DA8XX_AEMIF_CS5_BASE + SZ_32K - 1,
                .flags = IORESOURCE_MEM,
        },
% |6 |- V6 Q! f% ?! |# o        [1] = {
- u3 _8 s! H% A" d9 l7 z! b" N& a. F                .start = -1,
: W' \4 l6 f4 j, P" {( W                .end   = -1,
* |/ w1 S5 z$ i. \6 C: l- k                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
! R! h- _4 X: f1 _        },
" M* k" T: T, }' @
& I: }! s, c% x- D' t};
) [: ]* u! c2 x1 `/ @" l
static struct platform_device ax88796b_device = {
        .name = "ax88796b",
        .dev = {
2 h0 }- G& R# v* ~+ l
        },
% v9 L0 B# o1 x, v. I2 d% Z        .num_resources = ARRAY_SIZE(ax88796b_resources),
# n* S' W% {' Z! l. x        .resource = ax88796b_resources,
};

static inline void da850_evm_setup_ax88796b(void)
" W; m6 f' y) g  a6 p{
. q! g) P) G7 d; h0 N        void __iomem *aemif_addr;
$ o& Q' B" F7 `6 H        int ret = 0;
       
5 \3 C% o5 u; t3 Z% k8 r% q        ret = davinci_cfg_reg_list(da850_evm_ax88796b_pins);
! ?' R: J: v0 x* I       
' _( N, w  n( ^, C* }% v        if(ret)
( q+ C# g! n4 p5 c                pr_warning("da850_evm_init: ax88796b mux setup failde:"
* T; U5 }- \, |1 u- ~" P. y: w: }                        "%d\n", ret);
        aemif_addr = ioremap(DA8XX_AEMIF_CTL_BASE, SZ_32K);
       
        writel(readl(aemif_addr + DA8XX_AEMIF_CE5CFG_OFFSET) |
6 M# L# U" ~6 }& E3 ]                DA8XX_AEMIF_ASIZE_16BIT,
: a- i. ?5 ?' A+ R5 ~; ?3 B" O                aemif_addr + DA8XX_AEMIF_CE5CFG_OFFSET);
        iounmap(aemif_addr);
1 `$ _5 T7 `0 }0 v        ax88796b_resources[1].start = gpio_to_irq(DA850_AX88796B_IRQ);
- x4 h6 O- o+ |5 J        ax88796b_resources[1].end   = ax88796b_resources[1].start;
       
        platform_device_register(&ax88796b_device);
       
}
- Q3 M* j8 R7 ~
0 Y' \4 x  j+ S$ C7 f5 Y& ~和相关的引脚配置
编译通过，
6 {7 D  g7 t" n. ]& z. j在板子内核启动过程中：
" K# [: R+ ?3 P4 p2 ~% pINIT: version 2.88 booting
Starting udev
Starting Bootlog daemon: bootlogd.
0 _% r! S* l: T; M+ YALSA: Restoring mixer settings...
/usr/sbin/alsactl: load_state:1686: No soundcards found...
2 i. h) ?& S+ J, qConfiguring network interfaces... [   12.665617] davinci_mdio davinci_mdio.0: resetting idled controller
7 ^3 w+ i2 t: z$ U[   12.672854] net eth0: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=davinci_mdio-0:00, id=7c0f1)
udhcpc (v1.20.2) started
+ R' C1 A0 ^9 p* g' USending discover...
; q0 R+ V; C8 s# D2 I8 DSending discover...
5 f* y( F# Z1 y" O1 [Sending discover...
No lease, failing
6 g; p7 |; d, f, y2 k0 ~, l/ Z$ |done.
1 I% K& |, y- kWed Nov  6 04:33:00 UTC 2013
INIT: Entering runlevel: 5
Starting system message bus: dbus.
Starting Dropbear SSH server: [   22.869096] ipv6: disagrees about version of symbol inet_recvmsg
! t9 a- R& f% F8 a4 s[   22.875341] ipv6: Unknown symbol inet_recvmsg (err -22)
' ~$ y9 r; k& v4 v[   22.880894] ipv6: disagrees about version of symbol skb_free_datagram
[   22.887493] ipv6: Unknown symbol skb_free_datagram (err -22)
) E/ L% \* @+ a0 w6 F  E[   22.893560] ipv6: disagrees about version of symbol __skb_checksum_complete
# r& W7 a' \6 z. o7 X[   22.900598] ipv6: Unknown symbol __skb_checksum_complete (err -22)
# j- Y1 e3 [& ]. e$ O, n[   22.907048] ipv6: disagrees about version of symbol register_sysctl_paths

$ `8 s5 X2 ?9 K. Z[   22.913984] ipv6: Unknown symbol register_sysctl_paths (err -22)
[   22.920203] ipv6: disagrees about version of symbol xfrm_inner_extract_output
0 u1 J$ a1 K  A- v, B% |2 J[   22.927486] ipv6: Unknown symbol xfrm_inner_extract_output (err -22)
[   22.934104] ipv6: disagrees about version of symbol skb_free_datagram_locked
- m( B" h1 Y$ q- f[   22.941222] ipv6: Unknown symbol skb_free_datagram_locked (err -22)
[   22.947739] ipv6: disagrees about version of symbol sock_i_uid

就会出现这个问题，请问如何解决

& j5 v; b4 a0 W$ X. ~4 d" B

teddy

请问您是出了什么问题了，这里的信息没看到时跟您的ax88796b相关的错误。
0 \& P8 `, n. {- e

zhaohui293

我添加了ax88796b的板级驱动，就出现上面的情况，没有添加的时候编译内核不会出现ipv6的问题。
$ x% B% y6 c" Q  }% e

teddy

ipv6: Unknown symbol inet_recvmsg (err -22)* 这个可能是因为，你的内核配置，会把ipv6的编译配置给关闭了，导致ipv6部分代码没有编译进内核。
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zhaohui293

我应该如何做？