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Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c569
1 files changed, 124 insertions, 445 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 2dbd63239c54..104256a5f0f7 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -994,6 +994,34 @@ static int _enable_clocks(struct omap_hwmod *oh)
}
/**
+ * _omap4_clkctrl_managed_by_clkfwk - true if clkctrl managed by clock framework
+ * @oh: struct omap_hwmod *
+ */
+static bool _omap4_clkctrl_managed_by_clkfwk(struct omap_hwmod *oh)
+{
+ if (oh->prcm.omap4.flags & HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK)
+ return true;
+
+ return false;
+}
+
+/**
+ * _omap4_has_clkctrl_clock - returns true if a module has clkctrl clock
+ * @oh: struct omap_hwmod *
+ */
+static bool _omap4_has_clkctrl_clock(struct omap_hwmod *oh)
+{
+ if (oh->prcm.omap4.clkctrl_offs)
+ return true;
+
+ if (!oh->prcm.omap4.clkctrl_offs &&
+ oh->prcm.omap4.flags & HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET)
+ return true;
+
+ return false;
+}
+
+/**
* _disable_clocks - disable hwmod main clock and interface clocks
* @oh: struct omap_hwmod *
*
@@ -1030,7 +1058,8 @@ static int _disable_clocks(struct omap_hwmod *oh)
*/
static void _omap4_enable_module(struct omap_hwmod *oh)
{
- if (!oh->clkdm || !oh->prcm.omap4.modulemode)
+ if (!oh->clkdm || !oh->prcm.omap4.modulemode ||
+ _omap4_clkctrl_managed_by_clkfwk(oh))
return;
pr_debug("omap_hwmod: %s: %s: %d\n",
@@ -1061,8 +1090,10 @@ static int _omap4_wait_target_disable(struct omap_hwmod *oh)
if (oh->flags & HWMOD_NO_IDLEST)
return 0;
- if (!oh->prcm.omap4.clkctrl_offs &&
- !(oh->prcm.omap4.flags & HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET))
+ if (_omap4_clkctrl_managed_by_clkfwk(oh))
+ return 0;
+
+ if (!_omap4_has_clkctrl_clock(oh))
return 0;
return omap_cm_wait_module_idle(oh->clkdm->prcm_partition,
@@ -1071,215 +1102,6 @@ static int _omap4_wait_target_disable(struct omap_hwmod *oh)
}
/**
- * _count_mpu_irqs - count the number of MPU IRQ lines associated with @oh
- * @oh: struct omap_hwmod *oh
- *
- * Count and return the number of MPU IRQs associated with the hwmod
- * @oh. Used to allocate struct resource data. Returns 0 if @oh is
- * NULL.
- */
-static int _count_mpu_irqs(struct omap_hwmod *oh)
-{
- struct omap_hwmod_irq_info *ohii;
- int i = 0;
-
- if (!oh || !oh->mpu_irqs)
- return 0;
-
- do {
- ohii = &oh->mpu_irqs[i++];
- } while (ohii->irq != -1);
-
- return i-1;
-}
-
-/**
- * _count_sdma_reqs - count the number of SDMA request lines associated with @oh
- * @oh: struct omap_hwmod *oh
- *
- * Count and return the number of SDMA request lines associated with
- * the hwmod @oh. Used to allocate struct resource data. Returns 0
- * if @oh is NULL.
- */
-static int _count_sdma_reqs(struct omap_hwmod *oh)
-{
- struct omap_hwmod_dma_info *ohdi;
- int i = 0;
-
- if (!oh || !oh->sdma_reqs)
- return 0;
-
- do {
- ohdi = &oh->sdma_reqs[i++];
- } while (ohdi->dma_req != -1);
-
- return i-1;
-}
-
-/**
- * _count_ocp_if_addr_spaces - count the number of address space entries for @oh
- * @oh: struct omap_hwmod *oh
- *
- * Count and return the number of address space ranges associated with
- * the hwmod @oh. Used to allocate struct resource data. Returns 0
- * if @oh is NULL.
- */
-static int _count_ocp_if_addr_spaces(struct omap_hwmod_ocp_if *os)
-{
- struct omap_hwmod_addr_space *mem;
- int i = 0;
-
- if (!os || !os->addr)
- return 0;
-
- do {
- mem = &os->addr[i++];
- } while (mem->pa_start != mem->pa_end);
-
- return i-1;
-}
-
-/**
- * _get_mpu_irq_by_name - fetch MPU interrupt line number by name
- * @oh: struct omap_hwmod * to operate on
- * @name: pointer to the name of the MPU interrupt number to fetch (optional)
- * @irq: pointer to an unsigned int to store the MPU IRQ number to
- *
- * Retrieve a MPU hardware IRQ line number named by @name associated
- * with the IP block pointed to by @oh. The IRQ number will be filled
- * into the address pointed to by @dma. When @name is non-null, the
- * IRQ line number associated with the named entry will be returned.
- * If @name is null, the first matching entry will be returned. Data
- * order is not meaningful in hwmod data, so callers are strongly
- * encouraged to use a non-null @name whenever possible to avoid
- * unpredictable effects if hwmod data is later added that causes data
- * ordering to change. Returns 0 upon success or a negative error
- * code upon error.
- */
-static int _get_mpu_irq_by_name(struct omap_hwmod *oh, const char *name,
- unsigned int *irq)
-{
- int i;
- bool found = false;
-
- if (!oh->mpu_irqs)
- return -ENOENT;
-
- i = 0;
- while (oh->mpu_irqs[i].irq != -1) {
- if (name == oh->mpu_irqs[i].name ||
- !strcmp(name, oh->mpu_irqs[i].name)) {
- found = true;
- break;
- }
- i++;
- }
-
- if (!found)
- return -ENOENT;
-
- *irq = oh->mpu_irqs[i].irq;
-
- return 0;
-}
-
-/**
- * _get_sdma_req_by_name - fetch SDMA request line ID by name
- * @oh: struct omap_hwmod * to operate on
- * @name: pointer to the name of the SDMA request line to fetch (optional)
- * @dma: pointer to an unsigned int to store the request line ID to
- *
- * Retrieve an SDMA request line ID named by @name on the IP block
- * pointed to by @oh. The ID will be filled into the address pointed
- * to by @dma. When @name is non-null, the request line ID associated
- * with the named entry will be returned. If @name is null, the first
- * matching entry will be returned. Data order is not meaningful in
- * hwmod data, so callers are strongly encouraged to use a non-null
- * @name whenever possible to avoid unpredictable effects if hwmod
- * data is later added that causes data ordering to change. Returns 0
- * upon success or a negative error code upon error.
- */
-static int _get_sdma_req_by_name(struct omap_hwmod *oh, const char *name,
- unsigned int *dma)
-{
- int i;
- bool found = false;
-
- if (!oh->sdma_reqs)
- return -ENOENT;
-
- i = 0;
- while (oh->sdma_reqs[i].dma_req != -1) {
- if (name == oh->sdma_reqs[i].name ||
- !strcmp(name, oh->sdma_reqs[i].name)) {
- found = true;
- break;
- }
- i++;
- }
-
- if (!found)
- return -ENOENT;
-
- *dma = oh->sdma_reqs[i].dma_req;
-
- return 0;
-}
-
-/**
- * _get_addr_space_by_name - fetch address space start & end by name
- * @oh: struct omap_hwmod * to operate on
- * @name: pointer to the name of the address space to fetch (optional)
- * @pa_start: pointer to a u32 to store the starting address to
- * @pa_end: pointer to a u32 to store the ending address to
- *
- * Retrieve address space start and end addresses for the IP block
- * pointed to by @oh. The data will be filled into the addresses
- * pointed to by @pa_start and @pa_end. When @name is non-null, the
- * address space data associated with the named entry will be
- * returned. If @name is null, the first matching entry will be
- * returned. Data order is not meaningful in hwmod data, so callers
- * are strongly encouraged to use a non-null @name whenever possible
- * to avoid unpredictable effects if hwmod data is later added that
- * causes data ordering to change. Returns 0 upon success or a
- * negative error code upon error.
- */
-static int _get_addr_space_by_name(struct omap_hwmod *oh, const char *name,
- u32 *pa_start, u32 *pa_end)
-{
- int j;
- struct omap_hwmod_ocp_if *os;
- bool found = false;
-
- list_for_each_entry(os, &oh->slave_ports, node) {
-
- if (!os->addr)
- return -ENOENT;
-
- j = 0;
- while (os->addr[j].pa_start != os->addr[j].pa_end) {
- if (name == os->addr[j].name ||
- !strcmp(name, os->addr[j].name)) {
- found = true;
- break;
- }
- j++;
- }
-
- if (found)
- break;
- }
-
- if (!found)
- return -ENOENT;
-
- *pa_start = os->addr[j].pa_start;
- *pa_end = os->addr[j].pa_end;
-
- return 0;
-}
-
-/**
* _save_mpu_port_index - find and save the index to @oh's MPU port
* @oh: struct omap_hwmod *
*
@@ -1330,32 +1152,6 @@ static struct omap_hwmod_ocp_if *_find_mpu_rt_port(struct omap_hwmod *oh)
};
/**
- * _find_mpu_rt_addr_space - return MPU register target address space for @oh
- * @oh: struct omap_hwmod *
- *
- * Returns a pointer to the struct omap_hwmod_addr_space record representing
- * the register target MPU address space; or returns NULL upon error.
- */
-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 found = 0, i = 0;
-
- os = _find_mpu_rt_port(oh);
- if (!os || !os->addr)
- return NULL;
-
- do {
- mem = &os->addr[i++];
- if (mem->flags & ADDR_TYPE_RT)
- found = 1;
- } while (!found && mem->pa_start != mem->pa_end);
-
- return (found) ? mem : NULL;
-}
-
-/**
* _enable_sysc - try to bring a module out of idle via OCP_SYSCONFIG
* @oh: struct omap_hwmod *
*
@@ -1847,7 +1643,8 @@ static int _omap4_disable_module(struct omap_hwmod *oh)
{
int v;
- if (!oh->clkdm || !oh->prcm.omap4.modulemode)
+ if (!oh->clkdm || !oh->prcm.omap4.modulemode ||
+ _omap4_clkctrl_managed_by_clkfwk(oh))
return -EINVAL;
/*
@@ -2362,6 +2159,75 @@ static int of_dev_hwmod_lookup(struct device_node *np,
}
/**
+ * omap_hwmod_parse_module_range - map module IO range from device tree
+ * @oh: struct omap_hwmod *
+ * @np: struct device_node *
+ *
+ * Parse the device tree range an interconnect target module provides
+ * for it's child device IP blocks. This way we can support the old
+ * "ti,hwmods" property with just dts data without a need for platform
+ * data for IO resources. And we don't need all the child IP device
+ * nodes available in the dts.
+ */
+int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
+ struct device_node *np,
+ struct resource *res)
+{
+ struct property *prop;
+ const __be32 *ranges;
+ const char *name;
+ u32 nr_addr, nr_size;
+ u64 base, size;
+ int len, error;
+
+ if (!res)
+ return -EINVAL;
+
+ ranges = of_get_property(np, "ranges", &len);
+ if (!ranges)
+ return -ENOENT;
+
+ len /= sizeof(*ranges);
+
+ if (len < 3)
+ return -EINVAL;
+
+ of_property_for_each_string(np, "compatible", prop, name)
+ if (!strncmp("ti,sysc-", name, 8))
+ break;
+
+ if (!name)
+ return -ENOENT;
+
+ error = of_property_read_u32(np, "#address-cells", &nr_addr);
+ if (error)
+ return -ENOENT;
+
+ error = of_property_read_u32(np, "#size-cells", &nr_size);
+ if (error)
+ return -ENOENT;
+
+ if (nr_addr != 1 || nr_size != 1) {
+ pr_err("%s: invalid range for %s->%s\n", __func__,
+ oh->name, np->name);
+ return -EINVAL;
+ }
+
+ ranges++;
+ base = of_translate_address(np, ranges++);
+ size = be32_to_cpup(ranges);
+
+ pr_debug("omap_hwmod: %s %s at 0x%llx size 0x%llx\n",
+ oh->name, np->name, base, size);
+
+ res->start = base;
+ res->end = base + size - 1;
+ res->flags = IORESOURCE_MEM;
+
+ return 0;
+}
+
+/**
* _init_mpu_rt_base - populate the virtual address for a hwmod
* @oh: struct omap_hwmod * to locate the virtual address
* @data: (unused, caller should pass NULL)
@@ -2381,8 +2247,9 @@ static int of_dev_hwmod_lookup(struct device_node *np,
static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
int index, struct device_node *np)
{
- struct omap_hwmod_addr_space *mem;
void __iomem *va_start = NULL;
+ struct resource res;
+ int error;
if (!oh)
return -EINVAL;
@@ -2397,28 +2264,22 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
return -ENXIO;
- mem = _find_mpu_rt_addr_space(oh);
- if (!mem) {
- pr_debug("omap_hwmod: %s: no MPU register target found\n",
- oh->name);
+ if (!np) {
+ pr_err("omap_hwmod: %s: no dt node\n", oh->name);
+ return -ENXIO;
+ }
- /* Extract the IO space from device tree blob */
- if (!np) {
- pr_err("omap_hwmod: %s: no dt node\n", oh->name);
- return -ENXIO;
- }
+ /* Do we have a dts range for the interconnect target module? */
+ error = omap_hwmod_parse_module_range(oh, np, &res);
+ if (!error)
+ va_start = ioremap(res.start, resource_size(&res));
+ /* No ranges, rely on device reg entry */
+ if (!va_start)
va_start = of_iomap(np, index + oh->mpu_rt_idx);
- } else {
- va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);
- }
-
if (!va_start) {
- if (mem)
- pr_err("omap_hwmod: %s: Could not ioremap\n", oh->name);
- else
- pr_err("omap_hwmod: %s: Missing dt reg%i for %pOF\n",
- oh->name, index, np);
+ pr_err("omap_hwmod: %s: Missing dt reg%i for %pOF\n",
+ oh->name, index, np);
return -ENXIO;
}
@@ -2829,8 +2690,10 @@ static int _omap4_wait_target_ready(struct omap_hwmod *oh)
if (!_find_mpu_rt_port(oh))
return 0;
- if (!oh->prcm.omap4.clkctrl_offs &&
- !(oh->prcm.omap4.flags & HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET))
+ if (_omap4_clkctrl_managed_by_clkfwk(oh))
+ return 0;
+
+ if (!_omap4_has_clkctrl_clock(oh))
return 0;
/* XXX check module SIDLEMODE, hardreset status */
@@ -2986,8 +2849,7 @@ static int _omap4_disable_direct_prcm(struct omap_hwmod *oh)
if (!oh)
return -EINVAL;
- oh->prcm.omap4.clkctrl_offs = 0;
- oh->prcm.omap4.modulemode = 0;
+ oh->prcm.omap4.flags |= HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK;
return 0;
}
@@ -3322,189 +3184,6 @@ int omap_hwmod_shutdown(struct omap_hwmod *oh)
*/
/**
- * omap_hwmod_count_resources - count number of struct resources needed by hwmod
- * @oh: struct omap_hwmod *
- * @flags: Type of resources to include when counting (IRQ/DMA/MEM)
- *
- * Count the number of struct resource array elements necessary to
- * contain omap_hwmod @oh resources. Intended to be called by code
- * that registers omap_devices. Intended to be used to determine the
- * size of a dynamically-allocated struct resource array, before
- * calling omap_hwmod_fill_resources(). Returns the number of struct
- * resource array elements needed.
- *
- * XXX This code is not optimized. It could attempt to merge adjacent
- * resource IDs.
- *
- */
-int omap_hwmod_count_resources(struct omap_hwmod *oh, unsigned long flags)
-{
- int ret = 0;
-
- if (flags & IORESOURCE_IRQ)
- ret += _count_mpu_irqs(oh);
-
- if (flags & IORESOURCE_DMA)
- ret += _count_sdma_reqs(oh);
-
- if (flags & IORESOURCE_MEM) {
- struct omap_hwmod_ocp_if *os;
-
- list_for_each_entry(os, &oh->slave_ports, node)
- ret += _count_ocp_if_addr_spaces(os);
- }
-
- return ret;
-}
-
-/**
- * omap_hwmod_fill_resources - fill struct resource array with hwmod data
- * @oh: struct omap_hwmod *
- * @res: pointer to the first element of an array of struct resource to fill
- *
- * Fill the struct resource array @res with resource data from the
- * omap_hwmod @oh. Intended to be called by code that registers
- * omap_devices. See also omap_hwmod_count_resources(). Returns the
- * number of array elements filled.
- */
-int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res)
-{
- struct omap_hwmod_ocp_if *os;
- int i, j, mpu_irqs_cnt, sdma_reqs_cnt, addr_cnt;
- int r = 0;
-
- /* For each IRQ, DMA, memory area, fill in array.*/
-
- mpu_irqs_cnt = _count_mpu_irqs(oh);
- for (i = 0; i < mpu_irqs_cnt; i++) {
- unsigned int irq;
-
- if (oh->xlate_irq)
- irq = oh->xlate_irq((oh->mpu_irqs + i)->irq);
- else
- irq = (oh->mpu_irqs + i)->irq;
- (res + r)->name = (oh->mpu_irqs + i)->name;
- (res + r)->start = irq;
- (res + r)->end = irq;
- (res + r)->flags = IORESOURCE_IRQ;
- r++;
- }
-
- sdma_reqs_cnt = _count_sdma_reqs(oh);
- for (i = 0; i < sdma_reqs_cnt; i++) {
- (res + r)->name = (oh->sdma_reqs + i)->name;
- (res + r)->start = (oh->sdma_reqs + i)->dma_req;
- (res + r)->end = (oh->sdma_reqs + i)->dma_req;
- (res + r)->flags = IORESOURCE_DMA;
- r++;
- }
-
- list_for_each_entry(os, &oh->slave_ports, node) {
- addr_cnt = _count_ocp_if_addr_spaces(os);
-
- for (j = 0; j < addr_cnt; j++) {
- (res + r)->name = (os->addr + j)->name;
- (res + r)->start = (os->addr + j)->pa_start;
- (res + r)->end = (os->addr + j)->pa_end;
- (res + r)->flags = IORESOURCE_MEM;
- r++;
- }
- }
-
- return r;
-}
-
-/**
- * omap_hwmod_fill_dma_resources - fill struct resource array with dma data
- * @oh: struct omap_hwmod *
- * @res: pointer to the array of struct resource to fill
- *
- * Fill the struct resource array @res with dma resource data from the
- * omap_hwmod @oh. Intended to be called by code that registers
- * omap_devices. See also omap_hwmod_count_resources(). Returns the
- * number of array elements filled.
- */
-int omap_hwmod_fill_dma_resources(struct omap_hwmod *oh, struct resource *res)
-{
- int i, sdma_reqs_cnt;
- int r = 0;
-
- sdma_reqs_cnt = _count_sdma_reqs(oh);
- for (i = 0; i < sdma_reqs_cnt; i++) {
- (res + r)->name = (oh->sdma_reqs + i)->name;
- (res + r)->start = (oh->sdma_reqs + i)->dma_req;
- (res + r)->end = (oh->sdma_reqs + i)->dma_req;
- (res + r)->flags = IORESOURCE_DMA;
- r++;
- }
-
- return r;
-}
-
-/**
- * omap_hwmod_get_resource_byname - fetch IP block integration data by name
- * @oh: struct omap_hwmod * to operate on
- * @type: one of the IORESOURCE_* constants from include/linux/ioport.h
- * @name: pointer to the name of the data to fetch (optional)
- * @rsrc: pointer to a struct resource, allocated by the caller
- *
- * Retrieve MPU IRQ, SDMA request line, or address space start/end
- * data for the IP block pointed to by @oh. The data will be filled
- * into a struct resource record pointed to by @rsrc. The struct
- * resource must be allocated by the caller. When @name is non-null,
- * the data associated with the matching entry in the IRQ/SDMA/address
- * space hwmod data arrays will be returned. If @name is null, the
- * first array entry will be returned. Data order is not meaningful
- * in hwmod data, so callers are strongly encouraged to use a non-null
- * @name whenever possible to avoid unpredictable effects if hwmod
- * data is later added that causes data ordering to change. This
- * function is only intended for use by OMAP core code. Device
- * drivers should not call this function - the appropriate bus-related
- * data accessor functions should be used instead. Returns 0 upon
- * success or a negative error code upon error.
- */
-int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type,
- const char *name, struct resource *rsrc)
-{
- int r;
- unsigned int irq, dma;
- u32 pa_start, pa_end;
-
- if (!oh || !rsrc)
- return -EINVAL;
-
- if (type == IORESOURCE_IRQ) {
- r = _get_mpu_irq_by_name(oh, name, &irq);
- if (r)
- return r;
-
- rsrc->start = irq;
- rsrc->end = irq;
- } else if (type == IORESOURCE_DMA) {
- r = _get_sdma_req_by_name(oh, name, &dma);
- if (r)
- return r;
-
- rsrc->start = dma;
- rsrc->end = dma;
- } else if (type == IORESOURCE_MEM) {
- r = _get_addr_space_by_name(oh, name, &pa_start, &pa_end);
- if (r)
- return r;
-
- rsrc->start = pa_start;
- rsrc->end = pa_end;
- } else {
- return -EINVAL;
- }
-
- rsrc->flags = type;
- rsrc->name = name;
-
- return 0;
-}
-
-/**
* omap_hwmod_get_pwrdm - return pointer to this module's main powerdomain
* @oh: struct omap_hwmod *
*