nv-tegra-mirror/linux-nv-oot
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nv-oot.git synced 2025-12-24 02:01:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

misc: tegra-cec: tegra_nvdisp_powergate_partition

Browse Source 
Use tegra_nvdisp_unpowergate_partition/tegra_nvdisp_powergate_partition
in Tegra CEC driver to control DISA power domain.

Bug 200214236
Bug 200214232
Bug 200185815

Change-Id: Ib860570f901278e9211b5262fddf8c63a700c5f9
Signed-off-by: Chun XU <chunx@nvidia.com>
Reviewed-on: http://git-master/r/1176912
(cherry picked from commit 8e9f75ac1dadf04a8f89a74dac3e67cd1a06f886)
This commit is contained in:
Chun XU
2016-05-06 15:34:37 +08:00
committed by Jon Hunter
parent 1cd95da9b1
commit 3a1bf5d02f
1 changed files with 22 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/misc/tegra-cec/tegra_cec.c
View File

@@ -40,6 +40,7 @@
#include "tegra_cec.h"
#include <linux/tegra-powergate.h>
#include "../../../../display/drivers/video/tegra/dc/dc_priv.h"
static ssize_t cec_logical_addr_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count);
@@ -289,8 +290,6 @@ static const struct file_operations tegra_cec_fops = {
static void tegra_cec_init(struct tegra_cec *cec)
{
int power_tmp = 0, is_tegra186 = 0, ret;
cec->rx_wake = 0;
cec->tx_wake = 1;
cec->tx_buf_cnt = 0;
@@ -299,17 +298,6 @@ static void tegra_cec_init(struct tegra_cec *cec)
dev_notice(cec->dev, "%s started\n", __func__);
is_tegra186 = of_device_is_compatible(cec->dev->of_node, "nvidia,tegra186-cec");
if (is_tegra186 && !tegra_powergate_is_powered(TEGRA_POWERGATE_DISA)) {
ret = tegra_unpowergate_partition_with_clk_on(TEGRA_POWERGATE_DISA);
if (ret) {
dev_err(cec->dev, "Fail to unpowergate DISP.\n");
return;
}
power_tmp = 1;
dev_warn(cec->dev, "Unpowergate DISP temporarily.\n");
}
writel(0x00, cec->cec_base + TEGRA_CEC_HW_CONTROL);
writel(0x00, cec->cec_base + TEGRA_CEC_INT_MASK);
writel(0xffffffff, cec->cec_base + TEGRA_CEC_INT_STAT);
@@ -377,16 +365,6 @@ static void tegra_cec_init(struct tegra_cec *cec)
atomic_set(&cec->init_done, 1);
wake_up_interruptible(&cec->init_waitq);
if (is_tegra186 && power_tmp == 1) {
ret = tegra_powergate_partition_with_clk_off(TEGRA_POWERGATE_DISA);
if (ret) {
dev_err(cec->dev, "Fail to powergate DISP.\n");
return;
}
power_tmp = 0;
dev_warn(cec->dev, "Powergate DISP.\n");
}
dev_notice(cec->dev, "%s Done.\n", __func__);
}
@@ -495,6 +473,15 @@ static int tegra_cec_probe(struct platform_device *pdev)
atomic_set(&cec->init_done, 0);
mutex_init(&cec->tx_lock);
#if defined(CONFIG_TEGRA_NVDISPLAY) && defined(CONFIG_TEGRA_POWERGATE)
ret = tegra_nvdisp_unpowergate_partition(TEGRA_POWERGATE_DISA);
if (ret) {
dev_err(&pdev->dev, "Fail to unpowergate DISP: %d.\n", ret);
goto clk_error;
}
dev_info(&pdev->dev, "Unpowergate DISP: %d.\n", ret);
#endif
#if defined(CONFIG_TEGRA_DISPLAY)
if (np)
cec->clk = of_clk_get_by_name(np, "cec");
@@ -564,6 +551,9 @@ static int tegra_cec_probe(struct platform_device *pdev)
cec_error:
clk_disable(cec->clk);
clk_put(cec->clk);
#if defined(CONFIG_TEGRA_NVDISPLAY) && defined(CONFIG_TEGRA_POWERGATE)
tegra_nvdisp_powergate_partition(TEGRA_POWERGATE_DISA);
#endif
clk_error:
return ret;
}
@@ -574,6 +564,9 @@ static int tegra_cec_remove(struct platform_device *pdev)
clk_disable(cec->clk);
clk_put(cec->clk);
#if defined(CONFIG_TEGRA_NVDISPLAY) && defined(CONFIG_TEGRA_POWERGATE)
tegra_nvdisp_powergate_partition(TEGRA_POWERGATE_DISA);
#endif
misc_deregister(&cec->misc_dev);
cancel_work_sync(&cec->work);
@@ -598,6 +591,9 @@ static int tegra_cec_suspend(struct platform_device *pdev, pm_message_t state)
atomic_set(&cec->init_cancel, 0);
clk_disable(cec->clk);
#if defined(CONFIG_TEGRA_NVDISPLAY) && defined(CONFIG_TEGRA_POWERGATE)
tegra_nvdisp_powergate_partition(TEGRA_POWERGATE_DISA);
#endif
dev_notice(&pdev->dev, "suspended\n");
return 0;
@@ -609,6 +605,9 @@ static int tegra_cec_resume(struct platform_device *pdev)
dev_notice(&pdev->dev, "Resuming\n");
#if defined(CONFIG_TEGRA_NVDISPLAY) && defined(CONFIG_TEGRA_POWERGATE)
tegra_nvdisp_unpowergate_partition(TEGRA_POWERGATE_DISA);
#endif
clk_enable(cec->clk);
schedule_work(&cec->work);