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authorLad, Prabhakar <prabhakar.csengg@gmail.com>2013-03-22 04:53:12 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-04-14 20:08:09 -0300
commit9a3e89b10f5e48c0d8cca7896c02bf4d76d0ae46 (patch)
tree2b1d3c265b377a87f2fd89945333936e733f0e96 /drivers/media
parent407ccc65bfd2899ed008c4f8900f23ac15f75f9f (diff)
[media] media: davinci: vpss: enable vpss clocks
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>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/davinci/dm355_ccdc.c39
-rw-r--r--drivers/media/platform/davinci/dm644x_ccdc.c44
-rw-r--r--drivers/media/platform/davinci/isif.c28
-rw-r--r--drivers/media/platform/davinci/vpss.c25
4 files changed, 30 insertions, 106 deletions
diff --git a/drivers/media/platform/davinci/dm355_ccdc.c b/drivers/media/platform/davinci/dm355_ccdc.c
index 2364dbab8046..05f8fb7f7b70 100644
--- a/drivers/media/platform/davinci/dm355_ccdc.c
+++ b/drivers/media/platform/davinci/dm355_ccdc.c
@@ -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)
diff --git a/drivers/media/platform/davinci/dm644x_ccdc.c b/drivers/media/platform/davinci/dm644x_ccdc.c
index 971d639b6674..30fa08405d61 100644
--- a/drivers/media/platform/davinci/dm644x_ccdc.c
+++ b/drivers/media/platform/davinci/dm644x_ccdc.c
@@ -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();
diff --git a/drivers/media/platform/davinci/isif.c b/drivers/media/platform/davinci/isif.c
index abc3ae36645c..3332cca632e5 100644
--- a/drivers/media/platform/davinci/isif.c
+++ b/drivers/media/platform/davinci/isif.c
@@ -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 @@ fail_nobase_res:
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;
}
diff --git a/drivers/media/platform/davinci/vpss.c b/drivers/media/platform/davinci/vpss.c
index a19c552232d1..d36429d1bd69 100644
--- a/drivers/media/platform/davinci/vpss.c
+++ b/drivers/media/platform/davinci/vpss.c
@@ -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,

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