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clk: mmp: stop using platform headers

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The mmp clock drivers currently hardcode the physical addresses for
the clock registers. This is generally a bad idea, and it also gets in
the way of multiplatform builds, which make the platform header files
inaccessible to device drivers.

To work around the header file problem, this patch changes the calling
convention so the three mmp clock drivers get initialized with the base
addresses as arguments from the platform code.

It would still be useful to have a larger rework of the clock drivers,
with DT integration to let the clocks actually be probed automatically,
and the base addresses passed as DT properties. I am unsure if anyone
is still interested in the mmp platform, so it is possible that this
won't happen.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Chao Xie <chao.xie@marvell.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
This commit is contained in:
Arnd Bergmann 2014-04-15 15:20:50 +02:00
parent 31ade3b83e
commit 990f2f223c
11 changed files with 58 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/mach-mmp/clock-mmp2.c
View File

@ -4,6 +4,7 @@
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk/mmp.h>
#include <mach/addr-map.h>
@ -105,7 +106,8 @@ static struct clk_lookup mmp2_clkregs[] = {
INIT_CLKREG(&clk_sdh3, "sdhci-pxav3.3", "PXA-SDHCLK"),
};
void __init mmp2_clk_init(void)
void __init mmp2_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys)
{
clkdev_add_table(ARRAY_AND_SIZE(mmp2_clkregs));
}

4
arch/arm/mach-mmp/clock-pxa168.c
View File

@ -4,6 +4,7 @@
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk/mmp.h>
#include <mach/addr-map.h>
@ -85,7 +86,8 @@ static struct clk_lookup pxa168_clkregs[] = {
INIT_CLKREG(&clk_rtc, "sa1100-rtc", NULL),
};
void __init pxa168_clk_init(void)
void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys)
{
clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs));
}

4
arch/arm/mach-mmp/clock-pxa910.c
View File

@ -4,6 +4,7 @@
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk/mmp.h>
#include <mach/addr-map.h>
@ -61,7 +62,8 @@ static struct clk_lookup pxa910_clkregs[] = {
INIT_CLKREG(&clk_rtc, "sa1100-rtc", NULL),
};
void __init pxa910_clk_init(void)
void __init pxa910_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys, phys_addr_t apbcp_phys)
{
clkdev_add_table(ARRAY_AND_SIZE(pxa910_clkregs));
}

3
arch/arm/mach-mmp/common.h
View File

@ -5,6 +5,3 @@ extern void timer_init(int irq);
extern void __init mmp_map_io(void);
extern void mmp_restart(enum reboot_mode, const char *);
extern void __init pxa168_clk_init(void);
extern void __init pxa910_clk_init(void);
extern void __init mmp2_clk_init(void);

5
arch/arm/mach-mmp/mmp2.c
View File

@ -9,6 +9,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk/mmp.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@ -111,7 +112,9 @@ static int __init mmp2_init(void)
mfp_init_base(MFPR_VIRT_BASE);
mfp_init_addr(mmp2_addr_map);
pxa_init_dma(IRQ_MMP2_DMA_RIQ, 16);
mmp2_clk_init();
mmp2_clk_init(APB_PHYS_BASE + 0x50000,
AXI_PHYS_BASE + 0x82800,
APB_PHYS_BASE + 0x15000);
}
return 0;

5
arch/arm/mach-mmp/pxa168.c
View File

@ -13,6 +13,7 @@
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk/mmp.h>
#include <linux/platform_device.h>
#include <linux/platform_data/mv_usb.h>
@ -56,7 +57,9 @@ static int __init pxa168_init(void)
mfp_init_base(MFPR_VIRT_BASE);
mfp_init_addr(pxa168_mfp_addr_map);
pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
pxa168_clk_init();
pxa168_clk_init(APB_PHYS_BASE + 0x50000,
AXI_PHYS_BASE + 0x82800,
APB_PHYS_BASE + 0x15000);
}
return 0;

6
arch/arm/mach-mmp/pxa910.c
View File

@ -7,6 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk/mmp.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@ -97,7 +98,10 @@ static int __init pxa910_init(void)
mfp_init_base(MFPR_VIRT_BASE);
mfp_init_addr(pxa910_mfp_addr_map);
pxa_init_dma(IRQ_PXA910_DMA_INT0, 32);
pxa910_clk_init();
pxa910_clk_init(APB_PHYS_BASE + 0x50000,
AXI_PHYS_BASE + 0x82800,
APB_PHYS_BASE + 0x15000,
APB_PHYS_BASE + 0x3b000);
}
return 0;

12
drivers/clk/mmp/clk-mmp2.c
View File

@ -9,6 +9,7 @@
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
@ -16,8 +17,6 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <mach/addr-map.h>
#include "clk.h"
#define APBC_RTC 0x0
@ -73,7 +72,8 @@ static const char *sdh_parent[] = {"pll1_4", "pll2", "usb_pll", "pll1"};
static const char *disp_parent[] = {"pll1", "pll1_16", "pll2", "vctcxo"};
static const char *ccic_parent[] = {"pll1_2", "pll1_16", "vctcxo"};
void __init mmp2_clk_init(void)
void __init mmp2_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys)
{
struct clk *clk;
struct clk *vctcxo;
@ -81,19 +81,19 @@ void __init mmp2_clk_init(void)
void __iomem *apmu_base;
void __iomem *apbc_base;
mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
mpmu_base = ioremap(mpmu_phys, SZ_4K);
if (mpmu_base == NULL) {
pr_err("error to ioremap MPMU base\n");
return;
}
apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
apmu_base = ioremap(apmu_phys, SZ_4K);
if (apmu_base == NULL) {
pr_err("error to ioremap APMU base\n");
return;
}
apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
apbc_base = ioremap(apbc_phys, SZ_4K);
if (apbc_base == NULL) {
pr_err("error to ioremap APBC base\n");
return;

12
drivers/clk/mmp/clk-pxa168.c
View File

@ -9,6 +9,7 @@
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
@ -16,8 +17,6 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <mach/addr-map.h>
#include "clk.h"
#define APBC_RTC 0x28
@ -66,7 +65,8 @@ static const char *disp_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
void __init pxa168_clk_init(void)
void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys)
{
struct clk *clk;
struct clk *uart_pll;
@ -74,19 +74,19 @@ void __init pxa168_clk_init(void)
void __iomem *apmu_base;
void __iomem *apbc_base;
mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
mpmu_base = ioremap(mpmu_phys, SZ_4K);
if (mpmu_base == NULL) {
pr_err("error to ioremap MPMU base\n");
return;
}
apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
apmu_base = ioremap(apmu_phys, SZ_4K);
if (apmu_base == NULL) {
pr_err("error to ioremap APMU base\n");
return;
}
apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
apbc_base = ioremap(apbc_phys, SZ_4K);
if (apbc_base == NULL) {
pr_err("error to ioremap APBC base\n");
return;

14
drivers/clk/mmp/clk-pxa910.c
View File

@ -9,6 +9,7 @@
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
@ -16,8 +17,6 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <mach/addr-map.h>
#include "clk.h"
#define APBC_RTC 0x28
@ -64,7 +63,8 @@ static const char *disp_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
void __init pxa910_clk_init(void)
void __init pxa910_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
phys_addr_t apbc_phys, phys_addr_t apbcp_phys)
{
struct clk *clk;
struct clk *uart_pll;
@ -73,25 +73,25 @@ void __init pxa910_clk_init(void)
void __iomem *apbcp_base;
void __iomem *apbc_base;
mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
mpmu_base = ioremap(mpmu_phys, SZ_4K);
if (mpmu_base == NULL) {
pr_err("error to ioremap MPMU base\n");
return;
}
apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
apmu_base = ioremap(apmu_phys, SZ_4K);
if (apmu_base == NULL) {
pr_err("error to ioremap APMU base\n");
return;
}
apbcp_base = ioremap(APB_PHYS_BASE + 0x3b000, SZ_4K);
apbcp_base = ioremap(apbcp_phys, SZ_4K);
if (apbcp_base == NULL) {
pr_err("error to ioremap APBC extension base\n");
return;
}
apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
apbc_base = ioremap(apbc_phys, SZ_4K);
if (apbc_base == NULL) {
pr_err("error to ioremap APBC base\n");
return;

17
include/linux/clk/mmp.h Normal file
View File

@ -0,0 +1,17 @@
#ifndef __CLK_MMP_H
#define __CLK_MMP_H
#include <linux/types.h>
extern void pxa168_clk_init(phys_addr_t mpmu_phys,
phys_addr_t apmu_phys,
phys_addr_t apbc_phys);
extern void pxa910_clk_init(phys_addr_t mpmu_phys,
phys_addr_t apmu_phys,
phys_addr_t apbc_phys,
phys_addr_t apbcp_phys);
extern void mmp2_clk_init(phys_addr_t mpmu_phys,
phys_addr_t apmu_phys,
phys_addr_t apbc_phys);
#endif