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ARM: OMAP2+: control: determine control module base address from DT 

There is no need to provide the control module base address through a
low-level API from the low-level IO init, as this information is
available through DT. This patch adds a new API to initialize the
control module though, but mostly makes the old API obsolete. The
old API can be completely removed once OMAP3 is made DT only.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Tero Kristo 2014-11-13 19:17:34 +02:00
parent ae521d4d9c
commit 2208bf115f
5 changed files with 61 additions and 30 deletions
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49
arch/arm/mach-omap2/control.c
View File

@ -616,6 +616,7 @@ void __init omap3_ctrl_init(void)
struct control_init_data {
int index;
void __iomem *mem;
};
static struct control_init_data ctrl_data = {
@ -627,9 +628,38 @@ static const struct of_device_id omap_scrm_dt_match_table[] = {
{ .compatible = "ti,am4-scrm", .data = &ctrl_data },
{ .compatible = "ti,omap2-scrm", .data = &ctrl_data },
{ .compatible = "ti,omap3-scrm", .data = &ctrl_data },
{ .compatible = "ti,dm816-scrm", .data = &ctrl_data },
{ }
};
/**
* omap2_control_base_init - initialize iomappings for the control driver
*
* Detects and initializes the iomappings for the control driver, based
* on the DT data. Returns 0 in success, negative error value
* otherwise.
*/
int __init omap2_control_base_init(void)
{
struct device_node *np;
const struct of_device_id *match;
struct control_init_data *data;
void __iomem *mem;
for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) {
data = (struct control_init_data *)match->data;
mem = of_iomap(np, 0);
if (!mem)
return -ENOMEM;
omap2_ctrl_base = mem;
data->mem = mem;
}
return 0;
}
/**
* omap_control_init - low level init for the control driver
*
@ -639,7 +669,6 @@ static const struct of_device_id omap_scrm_dt_match_table[] = {
int __init omap_control_init(void)
{
struct device_node *np;
void __iomem *mem;
const struct of_device_id *match;
const struct omap_prcm_init_data *data;
int ret;
@ -647,14 +676,22 @@ int __init omap_control_init(void)
for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) {
data = match->data;
mem = of_iomap(np, 0);
if (!mem)
return -ENOMEM;
ret = omap2_clk_provider_init(np, data->index, mem);
ret = omap2_clk_provider_init(np, data->index, data->mem);
if (ret)
return ret;
}
return 0;
}
/**
* omap3_control_legacy_iomap_init - legacy iomap init for clock providers
*
* Legacy iomap init for clock provider. Needed only by legacy boot mode,
* where the base addresses are not parsed from DT, but still required
* by the clock driver to be setup properly.
*/
void __init omap3_control_legacy_iomap_init(void)
{
omap2_clk_legacy_provider_init(TI_CLKM_SCRM, omap2_ctrl_base);
}

2
arch/arm/mach-omap2/control.h
View File

@ -464,9 +464,11 @@ extern void omap_ctrl_write_dsp_boot_mode(u8 bootmode);
extern void omap3630_ctrl_disable_rta(void);
extern int omap3_ctrl_save_padconf(void);
void omap3_ctrl_init(void);
int omap2_control_base_init(void);
int omap_control_init(void);
extern void omap2_set_globals_control(void __iomem *ctrl,
void __iomem *ctrl_pad);
void __init omap3_control_legacy_iomap_init(void);
#else
#define omap_ctrl_base_get() 0
#define omap_ctrl_readb(x) 0

34
arch/arm/mach-omap2/io.c
View File

@ -384,8 +384,7 @@ void __init omap2420_init_early(void)
omap2_set_globals_tap(OMAP242X_CLASS, OMAP2_L4_IO_ADDRESS(0x48014000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP242X_CTRL_BASE),
NULL);
omap2_control_base_init();
omap2xxx_check_revision();
omap2xxx_prm_init();
omap2xxx_cm_init();
@ -412,8 +411,7 @@ void __init omap2430_init_early(void)
omap2_set_globals_tap(OMAP243X_CLASS, OMAP2_L4_IO_ADDRESS(0x4900a000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE),
NULL);
omap2_control_base_init();
omap2xxx_check_revision();
omap2xxx_prm_init();
omap2xxx_cm_init();
@ -444,11 +442,15 @@ void __init omap3_init_early(void)
omap2_set_globals_tap(OMAP343X_CLASS, OMAP2_L4_IO_ADDRESS(0x4830A000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE),
NULL);
/* XXX: remove these two once OMAP3 is DT only */
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE), NULL);
/* XXX: remove these once OMAP3 is DT only */
if (!of_have_populated_dt()) {
omap2_set_globals_control(
OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE), NULL);
omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE));
omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE),
NULL);
}
omap2_control_base_init();
omap3xxx_check_revision();
omap3xxx_check_features();
omap3xxx_prm_init();
@ -459,7 +461,7 @@ void __init omap3_init_early(void)
omap3xxx_hwmod_init();
omap_hwmod_init_postsetup();
if (!of_have_populated_dt()) {
omap3_prcm_legacy_iomaps_init();
omap3_control_legacy_iomap_init();
if (soc_is_am35xx())
omap_clk_soc_init = am35xx_clk_legacy_init;
else if (cpu_is_omap3630())
@ -546,8 +548,7 @@ void __init ti814x_init_early(void)
{
omap2_set_globals_tap(TI814X_CLASS,
OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
NULL);
omap2_control_base_init();
omap3xxx_check_revision();
ti81xx_check_features();
am33xx_prm_init();
@ -565,8 +566,7 @@ void __init ti816x_init_early(void)
{
omap2_set_globals_tap(TI816X_CLASS,
OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),
NULL);
omap2_control_base_init();
omap3xxx_check_revision();
ti81xx_check_features();
am33xx_prm_init();
@ -586,8 +586,7 @@ void __init am33xx_init_early(void)
{
omap2_set_globals_tap(AM335X_CLASS,
AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
omap2_set_globals_control(AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE),
NULL);
omap2_control_base_init();
omap3xxx_check_revision();
am33xx_check_features();
am33xx_prm_init();
@ -610,8 +609,7 @@ void __init am43xx_init_early(void)
{
omap2_set_globals_tap(AM335X_CLASS,
AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
omap2_set_globals_control(AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE),
NULL);
omap2_control_base_init();
omap3xxx_check_revision();
am33xx_check_features();
omap44xx_prm_init();

1
arch/arm/mach-omap2/prm.h
View File

@ -21,7 +21,6 @@ extern u16 prm_features;
extern void omap2_set_globals_prm(void __iomem *prm);
int omap_prcm_init(void);
int omap2_prm_base_init(void);
void omap3_prcm_legacy_iomaps_init(void);
# endif
/*

5
arch/arm/mach-omap2/prm_common.c
View File

@ -722,11 +722,6 @@ int __init omap_prcm_init(void)
return 0;
}
void __init omap3_prcm_legacy_iomaps_init(void)
{
omap2_clk_legacy_provider_init(TI_CLKM_SCRM, omap_ctrl_base_get());
}
static int __init prm_late_init(void)
{
if (prm_ll_data->late_init)