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[] = {
4 r$ q7 F8 P2 T  b; O1 Q8 N7 ~- _        [0] = {
                .start = DA8XX_AEMIF_CS5_BASE,
                .end   = DA8XX_AEMIF_CS5_BASE + SZ_32K - 1,
                .flags = IORESOURCE_MEM,
+ D+ @0 f, Z' p+ n        },
6 f! d' w  r0 O2 A        [1] = {
' U* _( i$ Z# D  n0 f6 E                .start = -1,
+ V$ @1 G* n, w' ]4 _                .end   = -1,
: R; C5 p% S' i                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
        },
, }$ y2 w: S- ]0 y* T
};
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; `4 D" B' `% o# z+ P2 e$ n- Xstatic struct platform_device ax88796b_device = {
        .name = "ax88796b",
& Z4 ^9 }  R! n/ _* r0 V6 a/ g) @  G        .dev = {
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- G! r* V! b+ a9 A6 T( l        },
        .num_resources = ARRAY_SIZE(ax88796b_resources),
4 Q# c! r8 b2 v        .resource = ax88796b_resources,
6 Q  R. u: }- Y& z" s4 E# L};
: ^" N* G  C6 U3 x
! O( C' V1 w* j5 B' s5 t' e1 S+ hstatic inline void da850_evm_setup_ax88796b(void)
- w& Y9 l) z1 l, R* T{
# f6 {6 D2 P+ k) \, q        void __iomem *aemif_addr;
3 U. r0 E$ }7 V1 m        int ret = 0;
& e. w5 H3 y! a& J       
5 \7 O" h3 [. t3 `        ret = davinci_cfg_reg_list(da850_evm_ax88796b_pins);
       
        if(ret)
9 G! L+ L% N% h" r                pr_warning("da850_evm_init: ax88796b mux setup failde:"
+ u9 P; |7 w- J! M, ]+ K+ }3 \+ |8 b1 o                        "%d\n", ret);
        aemif_addr = ioremap(DA8XX_AEMIF_CTL_BASE, SZ_32K);
       
# N7 x; s+ I! P8 x- o2 W% }        writel(readl(aemif_addr + DA8XX_AEMIF_CE5CFG_OFFSET) |
                DA8XX_AEMIF_ASIZE_16BIT,
/ ]7 u+ Q9 F7 S8 R                aemif_addr + DA8XX_AEMIF_CE5CFG_OFFSET);
2 `7 y2 C* T+ H' s) h/ r0 w        iounmap(aemif_addr);
3 U* U( O' b# S        ax88796b_resources[1].start = gpio_to_irq(DA850_AX88796B_IRQ);
        ax88796b_resources[1].end   = ax88796b_resources[1].start;
. E: j. S/ m4 @1 ^# ?+ G, x       
        platform_device_register(&ax88796b_device);
/ _, g6 ?5 `2 r: ~3 y. V       
! q% ]0 T. j) ]  H}
4 _6 V6 X# H+ ~7 E- ]" Q9 L$ w
1 q6 N7 W2 {" Z3 w% c( P和相关的引脚配置
编译通过，
: R  j' I. a7 Q4 b& o$ h1 W- s在板子内核启动过程中：
0 S3 Y9 V- j6 c# [# K, x0 X* j9 PINIT: version 2.88 booting
Starting udev
- R, N* k1 ~! k: V, O8 zStarting Bootlog daemon: bootlogd.
ALSA: Restoring mixer settings...
* R" p( Y6 W3 N9 n$ R) ^0 W/usr/sbin/alsactl: load_state:1686: No soundcards found...
Configuring network interfaces... [   12.665617] davinci_mdio davinci_mdio.0: resetting idled controller
/ }& X% m1 ]$ ]% I, Z8 a[   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
! C7 q3 A& m5 d( LSending discover...
% f2 \1 A( m7 H3 bSending discover...
Sending discover...
& x# n  e! }/ G- ~4 `- \No lease, failing
done.
Wed Nov  6 04:33:00 UTC 2013
4 i& L3 v3 C& s- u* gINIT: Entering runlevel: 5
Starting system message bus: dbus.
+ v9 X9 B; ?0 C8 ^- L, E0 d7 o/ KStarting Dropbear SSH server: [   22.869096] ipv6: disagrees about version of symbol inet_recvmsg
[   22.875341] ipv6: Unknown symbol inet_recvmsg (err -22)
[   22.880894] ipv6: disagrees about version of symbol skb_free_datagram
[   22.887493] ipv6: Unknown symbol skb_free_datagram (err -22)
, f- |4 I# h7 I. J) ][   22.893560] ipv6: disagrees about version of symbol __skb_checksum_complete
[   22.900598] ipv6: Unknown symbol __skb_checksum_complete (err -22)
( q! u% E1 x2 s0 Y) F5 n6 |/ T[   22.907048] ipv6: disagrees about version of symbol register_sysctl_paths

# a6 i+ m: b3 s. _/ {" x[   22.913984] ipv6: Unknown symbol register_sysctl_paths (err -22)
2 G$ W5 Y9 Z3 T) v( m9 U; s/ K[   22.920203] ipv6: disagrees about version of symbol xfrm_inner_extract_output
* y9 Q6 {1 U( j1 O- @  h[   22.927486] ipv6: Unknown symbol xfrm_inner_extract_output (err -22)
[   22.934104] ipv6: disagrees about version of symbol skb_free_datagram_locked
6 Q9 e; e; ^/ W* z( b[   22.941222] ipv6: Unknown symbol skb_free_datagram_locked (err -22)
[   22.947739] ipv6: disagrees about version of symbol sock_i_uid
! v- L. m, x0 z3 v  A6 p, D
" y9 N# v* X, z+ t就会出现这个问题，请问如何解决
# a7 b. t7 Z3 H  J0 q
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zhaohui293

我应该如何做？

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。

zhaohui293

# A  w4 A6 f: a  R
( G/ g; U4 S; x6 s2 ^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。

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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。