Hi,
* Konstantin Baydarov <kbaidarov@xxxxxxxxxxxxx> [120627 11:09]:
> OMAP system control module can be probed early, then
> omap_type is safe to use its APIs.
>
> TODO: add support for other omap versions
>
> Signed-off-by: Konstantin Baydarov <kbaidarov@xxxxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/id.c | 9 +++++----
> 1 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
> index 00486a8..1b0cec8 100644
> --- a/arch/arm/mach-omap2/id.c
> +++ b/arch/arm/mach-omap2/id.c
> @@ -18,6 +18,7 @@
> #include <linux/kernel.h>
> #include <linux/init.h>
> #include <linux/io.h>
> +#include <linux/mfd/omap_control.h>
>
> #include <asm/cputype.h>
>
> @@ -43,13 +44,13 @@ int omap_type(void)
> u32 val = 0;
>
> if (cpu_is_omap24xx()) {
> - val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
> + val = omap_control_status_read(OMAP24XX_CONTROL_STATUS);
> } else if (cpu_is_am33xx()) {
> - val = omap_ctrl_readl(AM33XX_CONTROL_STATUS);
> + val = omap_control_status_read(AM33XX_CONTROL_STATUS);
> } else if (cpu_is_omap34xx()) {
> - val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
> + val = omap_control_status_read(OMAP343X_CONTROL_STATUS);
> } else if (cpu_is_omap44xx()) {
> - val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS);
> + val = omap_control_status_read(OMAP4_CTRL_MODULE_CORE_STATUS);
> } else {
> pr_err("Cannot detect omap type!\n");
> goto out;
I think you should keep the CONTROL_STATUS defines private to the
SCM core driver, there should be no need to pass it here. Just
make it int omap_control_status_read(void).
Of course that means that the SCM core is initialized to some extent
to know where to find the CONTROL_STATUS register. That should
probably be done as part of the set_globals calls done in init_early
in mach-omap2/io.c file.
Regards,
Tony
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