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ARM: OMAP4+: PRM: determine prm_device_inst based on DT compatibility 

PRM device instance offset is now provided through the prm_init_data.
This gets rid of some cpu_is_X / soc_is_X calls from PRM core code,
preparing for PRM to be its own separate driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
hifive-unleashed-5.1
Tero Kristo 2014-09-08 11:29:43 +03:00
parent ab7b2ffcf5
commit 48e0c1148d
5 changed files with 42 additions and 18 deletions
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2
arch/arm/mach-omap2/prcm-common.h
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@ -524,6 +524,7 @@ struct omap_prcm_irq_setup {
* @mem: IO mem pointer for this module
* @offset: module base address offset from the IO base
* @flags: PRCM module init flags
* @device_inst_offset: device instance offset within the module address space
* @init: low level PRCM init function for this module
* @np: device node for this PRCM module
*/
@ -532,6 +533,7 @@ struct omap_prcm_init_data {
void __iomem *mem;
s16 offset;
u16 flags;
s32 device_inst_offset;
int (*init)(const struct omap_prcm_init_data *data);
struct device_node *np;
};

2
arch/arm/mach-omap2/prm44xx.c
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@ -713,6 +713,8 @@ int __init omap44xx_prm_init(const struct omap_prcm_init_data *data)
if (!soc_is_dra7xx())
prm_features |= PRM_HAS_VOLTAGE;
omap4_prminst_set_prm_dev_inst(data->device_inst_offset);
return prm_register(&omap44xx_prm_ll_data);
}

37
arch/arm/mach-omap2/prm_common.c
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@ -34,6 +34,9 @@
#include "prm3xxx.h"
#include "prm33xx.h"
#include "prm44xx.h"
#include "prm54xx.h"
#include "prm7xx.h"
#include "prcm43xx.h"
#include "common.h"
#include "clock.h"
#include "cm.h"
@ -661,11 +664,35 @@ static struct omap_prcm_init_data am3_prm_data __initdata = {
};
#endif
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM43XX)
#ifdef CONFIG_ARCH_OMAP4
static struct omap_prcm_init_data omap4_prm_data __initdata = {
.index = TI_CLKM_PRM,
.init = omap44xx_prm_init,
.device_inst_offset = OMAP4430_PRM_DEVICE_INST,
};
#endif
#ifdef CONFIG_SOC_OMAP5
static struct omap_prcm_init_data omap5_prm_data __initdata = {
.index = TI_CLKM_PRM,
.init = omap44xx_prm_init,
.device_inst_offset = OMAP54XX_PRM_DEVICE_INST,
};
#endif
#ifdef CONFIG_SOC_DRA7XX
static struct omap_prcm_init_data dra7_prm_data __initdata = {
.index = TI_CLKM_PRM,
.init = omap44xx_prm_init,
.device_inst_offset = DRA7XX_PRM_DEVICE_INST,
};
#endif
#ifdef CONFIG_SOC_AM43XX
static struct omap_prcm_init_data am4_prm_data __initdata = {
.index = TI_CLKM_PRM,
.init = omap44xx_prm_init,
.device_inst_offset = AM43XX_PRM_DEVICE_INST,
};
#endif
@ -680,7 +707,7 @@ static const struct of_device_id omap_prcm_dt_match_table[] __initconst = {
{ .compatible = "ti,am3-prcm", .data = &am3_prm_data },
#endif
#ifdef CONFIG_SOC_AM43XX
{ .compatible = "ti,am4-prcm", .data = &omap4_prm_data },
{ .compatible = "ti,am4-prcm", .data = &am4_prm_data },
#endif
#ifdef CONFIG_SOC_TI81XX
{ .compatible = "ti,dm814-prcm", .data = &am3_prm_data },
@ -697,11 +724,11 @@ static const struct of_device_id omap_prcm_dt_match_table[] __initconst = {
{ .compatible = "ti,omap4-scrm", .data = &scrm_data },
#endif
#ifdef CONFIG_SOC_OMAP5
{ .compatible = "ti,omap5-prm", .data = &omap4_prm_data },
{ .compatible = "ti,omap5-prm", .data = &omap5_prm_data },
{ .compatible = "ti,omap5-scrm", .data = &scrm_data },
#endif
#ifdef CONFIG_SOC_DRA7XX
{ .compatible = "ti,dra7-prm", .data = &omap4_prm_data },
{ .compatible = "ti,dra7-prm", .data = &dra7_prm_data },
#endif
{ }
};

18
arch/arm/mach-omap2/prminst44xx.c
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@ -47,22 +47,14 @@ void omap_prm_base_init(void)
s32 omap4_prmst_get_prm_dev_inst(void)
{
if (prm_dev_inst != PRM_INSTANCE_UNKNOWN)
return prm_dev_inst;
/* This cannot be done way early at boot.. as things are not setup */
if (cpu_is_omap44xx())
prm_dev_inst = OMAP4430_PRM_DEVICE_INST;
else if (soc_is_omap54xx())
prm_dev_inst = OMAP54XX_PRM_DEVICE_INST;
else if (soc_is_dra7xx())
prm_dev_inst = DRA7XX_PRM_DEVICE_INST;
else if (soc_is_am43xx())
prm_dev_inst = AM43XX_PRM_DEVICE_INST;
return prm_dev_inst;
}
void omap4_prminst_set_prm_dev_inst(s32 dev_inst)
{
prm_dev_inst = dev_inst;
}
/* Read a register in a PRM instance */
u32 omap4_prminst_read_inst_reg(u8 part, s16 inst, u16 idx)
{

1
arch/arm/mach-omap2/prminst44xx.h
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@ -14,6 +14,7 @@
#define PRM_INSTANCE_UNKNOWN -1
extern s32 omap4_prmst_get_prm_dev_inst(void);
void omap4_prminst_set_prm_dev_inst(s32 dev_inst);
/*
* In an ideal world, we would not export these low-level functions,