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Commit c9aafd23 authored by Paul Walmsley's avatar Paul Walmsley
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ARM: OMAP2+: hwmod: provide a function to return the address space of the MPU RT 



A subsequent patch will need to know the struct omap_hwmod_addr_space
record corresponding to the module's register target, used by the MPU.
So, convert _find_mpu_rt_base() into _find_mpu_rt_addr_space().  Then
modify its sole current user, _populate_mpu_rt_base(), to extract the
MPU RT base address itself from the struct omap_hwmod_addr_space record.

Signed-off-by: default avatarPaul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
parent 747834ab

arch/arm/mach-omap2/omap_hwmod.c

+31 −24
Original line number Diff line number Diff line
@@ -884,24 +884,22 @@ static int __init _find_mpu_port_index(struct omap_hwmod *oh) 
}



/**

 * _find_mpu_rt_base - find hwmod register target base addr accessible by MPU

 * _find_mpu_rt_addr_space - return MPU register target address space for @oh

 * @oh: struct omap_hwmod *

 *

 * Return the virtual address of the base of the register target of

 * device @oh, or NULL on error.

 * Returns a pointer to the struct omap_hwmod_addr_space record representing

 * the register target MPU address space; or returns NULL upon error.

 */

static void __iomem * __init _find_mpu_rt_base(struct omap_hwmod *oh, u8 index)

static struct omap_hwmod_addr_space * __init _find_mpu_rt_addr_space(struct omap_hwmod *oh)

{

	struct omap_hwmod_ocp_if *os;

	struct omap_hwmod_addr_space *mem;

	int i = 0, found = 0;

	void __iomem *va_start;

	int found = 0, i = 0;



	if (!oh || oh->slaves_cnt == 0)

	if (!oh || oh->_int_flags & _HWMOD_NO_MPU_PORT || oh->slaves_cnt == 0)

		return NULL;



	os = oh->slaves[index];



	os = oh->slaves[oh->_mpu_port_index];

	if (!os->addr)

		return NULL;
@@ -911,20 +909,7 @@ static void __iomem * __init _find_mpu_rt_base(struct omap_hwmod *oh, u8 index) 
			found = 1;

	} while (!found && mem->pa_start != mem->pa_end);



	if (found) {

		va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);

		if (!va_start) {

			pr_err("omap_hwmod: %s: Could not ioremap\n", oh->name);

			return NULL;

		}

		pr_debug("omap_hwmod: %s: MPU register target at va %p\n",

			 oh->name, va_start);

	} else {

		pr_debug("omap_hwmod: %s: no MPU register target found\n",

			 oh->name);

	}



	return (found) ? va_start : NULL;

	return (found) ? mem : NULL;

}



/**
@@ -1813,10 +1798,32 @@ static int _shutdown(struct omap_hwmod *oh) 
 */

static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)

{

	struct omap_hwmod_addr_space *mem;

	void __iomem *va_start;



	if (!oh)

		return;



	if (oh->_int_flags & _HWMOD_NO_MPU_PORT)

		return;



	oh->_mpu_rt_va = _find_mpu_rt_base(oh, oh->_mpu_port_index);

	mem = _find_mpu_rt_addr_space(oh);

	if (!mem) {

		pr_debug("omap_hwmod: %s: no MPU register target found\n",

			 oh->name);

		return;

	}



	va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);

	if (!va_start) {

		pr_err("omap_hwmod: %s: Could not ioremap\n", oh->name);

		return;

	}



	pr_debug("omap_hwmod: %s: MPU register target at va %p\n",

		 oh->name, va_start);



	oh->_mpu_rt_va = va_start;

}



/**