Hi Jaya,
On Thu, Aug 04, 2011 at 04:40:01PM +0800, Jaya Kumar wrote:
> Hi Ido,
>
> A quick question for my own understanding. What's the mechanism by
> which wl12xx is bound with above. I see above wl12xx_set_platform_data
> but I didn't see something like .name = "wl1271" or dev_name that
> comes in through platform_device_register.
The wl12xx module calls wl12xx_get_platform_data, which simply returns
the structure set by wl12xx_set_platform_data. This mechanism only
supports a single platform data.
> If I look at other board files, I see:
>
> 321 #ifdef CONFIG_WL12XX_PLATFORM_DATA
> 322 {
> 323 .name = "wl1271",
> 324 .mmc = 2,
> 325 .caps = MMC_CAP_4_BIT_DATA |
> MMC_CAP_POWER_OFF_CARD,
> 326 .gpio_wp = -EINVAL,
> 327 .gpio_cd = -EINVAL,
> 328 .nonremovable = true,
> 329 },
> 330 #endif
'name' is just a descriptive name of omap2_hsmmc_info. davinci_mmc_config
doesn't have such a member.
> 729 #ifdef CONFIG_WL12XX_PLATFORM_DATA
> 730 /* WL12xx WLAN Init */
> 731 if (wl12xx_set_platform_data(&omap3evm_wlan_data))
> 732 pr_err("error setting wl12xx data\n");
> 733 platform_device_register(&omap3evm_wlan_regulator);
> 734 #endif
Please note that the platform_device_register above is used for
registering a regulator device, which is driven by the fixed regulator
driver and not by wl12xx. This regulator is controlled by omap's mmc
host driver.
Hope this clarifies things,
Ido.
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