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[media] media: davinci: vpss: enable vpss clocks

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By default the VPSS clocks were enabled in capture driver
for davinci family which creates duplicates for dm355/dm365/dm644x.
This patch adds support to enable the VPSS clocks in VPSS driver,
which avoids duplication of code and also adding clock aliases.
This patch uses PM runtime API to enable/disable clock, instead
of DaVinci clock framework. con_ids for master and slave clocks of
vpss is added in pm_domain.
This patch cleanups the VPSS clock enabling in the capture driver,
and also removes the clock alias in machine file. Along side adds
a vpss slave clock for DM365 as mentioned by Sekhar
(https://patchwork.kernel.org/patch/1221261/).
The Suspend/Resume in dm644x_ccdc.c which enabled/disabled the VPSS clock
is now implemented as part of the VPSS driver.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Lad, Prabhakar 2013-03-22 04:53:12 -03:00 committed by Mauro Carvalho Chehab
parent 407ccc65bf
commit 9a3e89b10f
8 changed files with 43 additions and 122 deletions
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7
arch/arm/mach-davinci/dm355.c
View File

@ -345,8 +345,8 @@ static struct clk_lookup dm355_clks[] = {
CLK(NULL, "pll1_aux", &pll1_aux_clk),
CLK(NULL, "pll1_sysclkbp", &pll1_sysclkbp),
CLK(NULL, "vpss_dac", &vpss_dac_clk),
CLK(NULL, "vpss_master", &vpss_master_clk),
CLK(NULL, "vpss_slave", &vpss_slave_clk),
CLK("vpss", "master", &vpss_master_clk),
CLK("vpss", "slave", &vpss_slave_clk),
CLK(NULL, "clkout1", &clkout1_clk),
CLK(NULL, "clkout2", &clkout2_clk),
CLK(NULL, "pll2", &pll2_clk),
@ -873,9 +873,6 @@ static int __init dm355_init_devices(void)
if (!cpu_is_davinci_dm355())
return 0;
/* Add ccdc clock aliases */
clk_add_alias("master", dm355_ccdc_dev.name, "vpss_master", NULL);
clk_add_alias("slave", dm355_ccdc_dev.name, "vpss_master", NULL);
davinci_cfg_reg(DM355_INT_EDMA_CC);
platform_device_register(&dm355_edma_device);
platform_device_register(&dm355_vpss_device);

11
arch/arm/mach-davinci/dm365.c
View File

@ -257,6 +257,12 @@ static struct clk vpss_master_clk = {
.flags = CLK_PSC,
};
static struct clk vpss_slave_clk = {
.name = "vpss_slave",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_VPSSSLV,
};
static struct clk arm_clk = {
.name = "arm_clk",
.parent = &pll2_sysclk2,
@ -449,7 +455,8 @@ static struct clk_lookup dm365_clks[] = {
CLK(NULL, "pll2_sysclk8", &pll2_sysclk8),
CLK(NULL, "pll2_sysclk9", &pll2_sysclk9),
CLK(NULL, "vpss_dac", &vpss_dac_clk),
CLK(NULL, "vpss_master", &vpss_master_clk),
CLK("vpss", "master", &vpss_master_clk),
CLK("vpss", "slave", &vpss_slave_clk),
CLK(NULL, "arm", &arm_clk),
CLK(NULL, "uart0", &uart0_clk),
CLK(NULL, "uart1", &uart1_clk),
@ -1239,8 +1246,6 @@ static int __init dm365_init_devices(void)
clk_add_alias(NULL, dev_name(&dm365_mdio_device.dev),
NULL, &dm365_emac_device.dev);
/* Add isif clock alias */
clk_add_alias("master", dm365_isif_dev.name, "vpss_master", NULL);
platform_device_register(&dm365_vpss_device);
platform_device_register(&dm365_isif_dev);
platform_device_register(&vpfe_capture_dev);

9
arch/arm/mach-davinci/dm644x.c
View File

@ -300,8 +300,8 @@ static struct clk_lookup dm644x_clks[] = {
CLK(NULL, "dsp", &dsp_clk),
CLK(NULL, "arm", &arm_clk),
CLK(NULL, "vicp", &vicp_clk),
CLK(NULL, "vpss_master", &vpss_master_clk),
CLK(NULL, "vpss_slave", &vpss_slave_clk),
CLK("vpss", "master", &vpss_master_clk),
CLK("vpss", "slave", &vpss_slave_clk),
CLK(NULL, "arm", &arm_clk),
CLK(NULL, "uart0", &uart0_clk),
CLK(NULL, "uart1", &uart1_clk),
@ -901,11 +901,6 @@ int __init dm644x_init_video(struct vpfe_config *vpfe_cfg,
dm644x_vpfe_dev.dev.platform_data = vpfe_cfg;
platform_device_register(&dm644x_ccdc_dev);
platform_device_register(&dm644x_vpfe_dev);
/* Add ccdc clock aliases */
clk_add_alias("master", dm644x_ccdc_dev.name,
"vpss_master", NULL);
clk_add_alias("slave", dm644x_ccdc_dev.name,
"vpss_slave", NULL);
}
if (vpbe_cfg) {

2
arch/arm/mach-davinci/pm_domain.c
View File

@ -53,7 +53,7 @@ static struct dev_pm_domain davinci_pm_domain = {
static struct pm_clk_notifier_block platform_bus_notifier = {
.pm_domain = &davinci_pm_domain,
.con_ids = { "fck", NULL, },
.con_ids = { "fck", "master", "slave", NULL },
};
static int __init davinci_pm_runtime_init(void)

39
drivers/media/platform/davinci/dm355_ccdc.c
View File

@ -37,7 +37,6 @@
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h>
@ -59,10 +58,6 @@ static struct ccdc_oper_config {
struct ccdc_params_raw bayer;
/* YCbCr configuration */
struct ccdc_params_ycbcr ycbcr;
/* Master clock */
struct clk *mclk;
/* slave clock */
struct clk *sclk;
/* ccdc base address */
void __iomem *base_addr;
} ccdc_cfg = {
@ -997,32 +992,10 @@ static int dm355_ccdc_probe(struct platform_device *pdev)
goto fail_nomem;
}
/* Get and enable Master clock */
ccdc_cfg.mclk = clk_get(&pdev->dev, "master");
if (IS_ERR(ccdc_cfg.mclk)) {
status = PTR_ERR(ccdc_cfg.mclk);
goto fail_nomap;
}
if (clk_prepare_enable(ccdc_cfg.mclk)) {
status = -ENODEV;
goto fail_mclk;
}
/* Get and enable Slave clock */
ccdc_cfg.sclk = clk_get(&pdev->dev, "slave");
if (IS_ERR(ccdc_cfg.sclk)) {
status = PTR_ERR(ccdc_cfg.sclk);
goto fail_mclk;
}
if (clk_prepare_enable(ccdc_cfg.sclk)) {
status = -ENODEV;
goto fail_sclk;
}
/* Platform data holds setup_pinmux function ptr */
if (NULL == pdev->dev.platform_data) {
status = -ENODEV;
goto fail_sclk;
goto fail_nomap;
}
setup_pinmux = pdev->dev.platform_data;
/*
@ -1033,12 +1006,6 @@ static int dm355_ccdc_probe(struct platform_device *pdev)
ccdc_cfg.dev = &pdev->dev;
printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
return 0;
fail_sclk:
clk_disable_unprepare(ccdc_cfg.sclk);
clk_put(ccdc_cfg.sclk);
fail_mclk:
clk_disable_unprepare(ccdc_cfg.mclk);
clk_put(ccdc_cfg.mclk);
fail_nomap:
iounmap(ccdc_cfg.base_addr);
fail_nomem:
@ -1052,10 +1019,6 @@ static int dm355_ccdc_remove(struct platform_device *pdev)
{
struct resource *res;
clk_disable_unprepare(ccdc_cfg.sclk);
clk_disable_unprepare(ccdc_cfg.mclk);
clk_put(ccdc_cfg.mclk);
clk_put(ccdc_cfg.sclk);
iounmap(ccdc_cfg.base_addr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res)

44
drivers/media/platform/davinci/dm644x_ccdc.c
View File

@ -38,7 +38,6 @@
#include <linux/uaccess.h>
#include <linux/videodev2.h>
#include <linux/gfp.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h>
@ -60,10 +59,6 @@ static struct ccdc_oper_config {
struct ccdc_params_raw bayer;
/* YCbCr configuration */
struct ccdc_params_ycbcr ycbcr;
/* Master clock */
struct clk *mclk;
/* slave clock */
struct clk *sclk;
/* ccdc base address */
void __iomem *base_addr;
} ccdc_cfg = {
@ -991,38 +986,9 @@ static int dm644x_ccdc_probe(struct platform_device *pdev)
goto fail_nomem;
}
/* Get and enable Master clock */
ccdc_cfg.mclk = clk_get(&pdev->dev, "master");
if (IS_ERR(ccdc_cfg.mclk)) {
status = PTR_ERR(ccdc_cfg.mclk);
goto fail_nomap;
}
if (clk_prepare_enable(ccdc_cfg.mclk)) {
status = -ENODEV;
goto fail_mclk;
}
/* Get and enable Slave clock */
ccdc_cfg.sclk = clk_get(&pdev->dev, "slave");
if (IS_ERR(ccdc_cfg.sclk)) {
status = PTR_ERR(ccdc_cfg.sclk);
goto fail_mclk;
}
if (clk_prepare_enable(ccdc_cfg.sclk)) {
status = -ENODEV;
goto fail_sclk;
}
ccdc_cfg.dev = &pdev->dev;
printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
return 0;
fail_sclk:
clk_disable_unprepare(ccdc_cfg.sclk);
clk_put(ccdc_cfg.sclk);
fail_mclk:
clk_disable_unprepare(ccdc_cfg.mclk);
clk_put(ccdc_cfg.mclk);
fail_nomap:
iounmap(ccdc_cfg.base_addr);
fail_nomem:
release_mem_region(res->start, resource_size(res));
fail_nores:
@ -1034,10 +1000,6 @@ static int dm644x_ccdc_remove(struct platform_device *pdev)
{
struct resource *res;
clk_disable_unprepare(ccdc_cfg.mclk);
clk_disable_unprepare(ccdc_cfg.sclk);
clk_put(ccdc_cfg.mclk);
clk_put(ccdc_cfg.sclk);
iounmap(ccdc_cfg.base_addr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res)
@ -1052,18 +1014,12 @@ static int dm644x_ccdc_suspend(struct device *dev)
ccdc_save_context();
/* Disable CCDC */
ccdc_enable(0);
/* Disable both master and slave clock */
clk_disable_unprepare(ccdc_cfg.mclk);
clk_disable_unprepare(ccdc_cfg.sclk);
return 0;
}
static int dm644x_ccdc_resume(struct device *dev)
{
/* Enable both master and slave clock */
clk_prepare_enable(ccdc_cfg.mclk);
clk_prepare_enable(ccdc_cfg.sclk);
/* Restore CCDC context */
ccdc_restore_context();

28
drivers/media/platform/davinci/isif.c
View File

@ -32,7 +32,6 @@
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h>
@ -88,8 +87,6 @@ static struct isif_oper_config {
struct isif_ycbcr_config ycbcr;
struct isif_params_raw bayer;
enum isif_data_pack data_pack;
/* Master clock */
struct clk *mclk;
/* ISIF base address */
void __iomem *base_addr;
/* ISIF Linear Table 0 */
@ -1039,6 +1036,10 @@ static int isif_probe(struct platform_device *pdev)
void *__iomem addr;
int status = 0, i;
/* Platform data holds setup_pinmux function ptr */
if (!pdev->dev.platform_data)
return -ENODEV;
/*
* first try to register with vpfe. If not correct platform, then we
* don't have to iomap
@ -1047,22 +1048,6 @@ static int isif_probe(struct platform_device *pdev)
if (status < 0)
return status;
/* Get and enable Master clock */
isif_cfg.mclk = clk_get(&pdev->dev, "master");
if (IS_ERR(isif_cfg.mclk)) {
status = PTR_ERR(isif_cfg.mclk);
goto fail_mclk;
}
if (clk_prepare_enable(isif_cfg.mclk)) {
status = -ENODEV;
goto fail_mclk;
}
/* Platform data holds setup_pinmux function ptr */
if (NULL == pdev->dev.platform_data) {
status = -ENODEV;
goto fail_mclk;
}
setup_pinmux = pdev->dev.platform_data;
/*
* setup Mux configuration for ccdc which may be different for
@ -1124,9 +1109,6 @@ static int isif_probe(struct platform_device *pdev)
release_mem_region(res->start, resource_size(res));
i--;
}
fail_mclk:
clk_disable_unprepare(isif_cfg.mclk);
clk_put(isif_cfg.mclk);
vpfe_unregister_ccdc_device(&isif_hw_dev);
return status;
}
@ -1146,8 +1128,6 @@ static int isif_remove(struct platform_device *pdev)
i++;
}
vpfe_unregister_ccdc_device(&isif_hw_dev);
clk_disable_unprepare(isif_cfg.mclk);
clk_put(isif_cfg.mclk);
return 0;
}

25
drivers/media/platform/davinci/vpss.c
View File

@ -25,6 +25,8 @@
#include <linux/spinlock.h>
#include <linux/compiler.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <media/davinci/vpss.h>
MODULE_LICENSE("GPL");
@ -490,6 +492,10 @@ static int vpss_probe(struct platform_device *pdev)
} else
oper_cfg.hw_ops.clear_wbl_overflow = dm644x_clear_wbl_overflow;
pm_runtime_enable(&pdev->dev);
pm_runtime_get(&pdev->dev);
spin_lock_init(&oper_cfg.vpss_lock);
dev_info(&pdev->dev, "%s vpss probe success\n", platform_name);
return 0;
@ -507,6 +513,7 @@ static int vpss_remove(struct platform_device *pdev)
{
struct resource *res;
pm_runtime_disable(&pdev->dev);
iounmap(oper_cfg.vpss_regs_base0);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
@ -518,10 +525,28 @@ static int vpss_remove(struct platform_device *pdev)
return 0;
}
static int vpss_suspend(struct device *dev)
{
pm_runtime_put(dev);
return 0;
}
static int vpss_resume(struct device *dev)
{
pm_runtime_get(dev);
return 0;
}
static const struct dev_pm_ops vpss_pm_ops = {
.suspend = vpss_suspend,
.resume = vpss_resume,
};
static struct platform_driver vpss_driver = {
.driver = {
.name = "vpss",
.owner = THIS_MODULE,
.pm = &vpss_pm_ops,
},
.remove = vpss_remove,
.probe = vpss_probe,