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path: root/drivers/gpu/drm/exynos/exynos_drm_mic.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_mic.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_mic.c108
1 files changed, 53 insertions, 55 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 2fd299a58297..29a8366513fa 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -1,31 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Samsung Electronics Co.Ltd
* Authors:
* Hyungwon Hwang <human.hwang@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundationr
*/
-#include <linux/platform_device.h>
-#include <video/of_videomode.h>
-#include <linux/of_address.h>
-#include <video/videomode.h>
-#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/component.h>
#include <linux/delay.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/of_graph.h>
-#include <linux/clk.h>
-#include <linux/component.h>
+#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
-#include <drm/drmP.h>
-#include <drm/drm_encoder.h>
-#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_print.h>
+
#include "exynos_drm_drv.h"
+#include "exynos_drm_crtc.h"
/* Sysreg registers for MIC */
#define DSD_CFG_MUX 0x1004
@@ -88,7 +89,7 @@
#define MIC_BS_SIZE_2D(x) ((x) & 0x3fff)
-static char *clk_names[] = { "pclk_mic0", "sclk_rgb_vclk_to_mic0" };
+static const char *const clk_names[] = { "pclk_mic0", "sclk_rgb_vclk_to_mic0" };
#define NUM_CLKS ARRAY_SIZE(clk_names)
static DEFINE_MUTEX(mic_mutex);
@@ -100,7 +101,6 @@ struct exynos_mic {
bool i80_mode;
struct videomode vm;
- struct drm_encoder *encoder;
struct drm_bridge bridge;
bool enabled;
@@ -113,7 +113,8 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
ret = regmap_read(mic->sysreg, DSD_CFG_MUX, &val);
if (ret) {
- DRM_ERROR("mic: Failed to read system register\n");
+ DRM_DEV_ERROR(mic->dev,
+ "mic: Failed to read system register\n");
return;
}
@@ -129,7 +130,8 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
ret = regmap_write(mic->sysreg, DSD_CFG_MUX, val);
if (ret)
- DRM_ERROR("mic: Failed to read system register\n");
+ DRM_DEV_ERROR(mic->dev,
+ "mic: Failed to read system register\n");
}
static int mic_sw_reset(struct exynos_mic *mic)
@@ -190,7 +192,7 @@ static void mic_set_output_timing(struct exynos_mic *mic)
struct videomode vm = mic->vm;
u32 reg, bs_size_2d;
- DRM_DEBUG("w: %u, h: %u\n", vm.hactive, vm.vactive);
+ DRM_DEV_DEBUG(mic->dev, "w: %u, h: %u\n", vm.hactive, vm.vactive);
bs_size_2d = ((vm.hactive >> 2) << 1) + (vm.vactive % 4);
reg = MIC_BS_SIZE_2D(bs_size_2d);
writel(reg, mic->reg + MIC_2D_OUTPUT_TIMING_2);
@@ -226,8 +228,6 @@ static void mic_set_reg_on(struct exynos_mic *mic, bool enable)
writel(reg, mic->reg + MIC_OP);
}
-static void mic_disable(struct drm_bridge *bridge) { }
-
static void mic_post_disable(struct drm_bridge *bridge)
{
struct exynos_mic *mic = bridge->driver_private;
@@ -246,8 +246,8 @@ already_disabled:
}
static void mic_mode_set(struct drm_bridge *bridge,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
{
struct exynos_mic *mic = bridge->driver_private;
@@ -266,7 +266,7 @@ static void mic_pre_enable(struct drm_bridge *bridge)
if (mic->enabled)
goto unlock;
- ret = pm_runtime_get_sync(mic->dev);
+ ret = pm_runtime_resume_and_get(mic->dev);
if (ret < 0)
goto unlock;
@@ -274,7 +274,7 @@ static void mic_pre_enable(struct drm_bridge *bridge)
ret = mic_sw_reset(mic);
if (ret) {
- DRM_ERROR("Failed to reset\n");
+ DRM_DEV_ERROR(mic->dev, "Failed to reset\n");
goto turn_off;
}
@@ -294,24 +294,30 @@ unlock:
mutex_unlock(&mic_mutex);
}
-static void mic_enable(struct drm_bridge *bridge) { }
-
static const struct drm_bridge_funcs mic_bridge_funcs = {
- .disable = mic_disable,
.post_disable = mic_post_disable,
.mode_set = mic_mode_set,
.pre_enable = mic_pre_enable,
- .enable = mic_enable,
};
static int exynos_mic_bind(struct device *dev, struct device *master,
void *data)
{
struct exynos_mic *mic = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+ struct exynos_drm_crtc *crtc = exynos_drm_crtc_get_by_type(drm_dev,
+ EXYNOS_DISPLAY_TYPE_LCD);
+ struct drm_encoder *e, *encoder = NULL;
+
+ drm_for_each_encoder(e, drm_dev)
+ if (e->possible_crtcs == drm_crtc_mask(&crtc->base))
+ encoder = e;
+ if (!encoder)
+ return -ENODEV;
mic->bridge.driver_private = mic;
- return 0;
+ return drm_bridge_attach(encoder, &mic->bridge, NULL, 0);
}
static void exynos_mic_unbind(struct device *dev, struct device *master,
@@ -334,7 +340,6 @@ static const struct component_ops exynos_mic_component_ops = {
.unbind = exynos_mic_unbind,
};
-#ifdef CONFIG_PM
static int exynos_mic_suspend(struct device *dev)
{
struct exynos_mic *mic = dev_get_drvdata(dev);
@@ -354,8 +359,8 @@ static int exynos_mic_resume(struct device *dev)
for (i = 0; i < NUM_CLKS; i++) {
ret = clk_prepare_enable(mic->clks[i]);
if (ret < 0) {
- DRM_ERROR("Failed to enable clock (%s)\n",
- clk_names[i]);
+ DRM_DEV_ERROR(dev, "Failed to enable clock (%s)\n",
+ clk_names[i]);
while (--i > -1)
clk_disable_unprepare(mic->clks[i]);
return ret;
@@ -363,13 +368,9 @@ static int exynos_mic_resume(struct device *dev)
}
return 0;
}
-#endif
-static const struct dev_pm_ops exynos_mic_pm_ops = {
- SET_RUNTIME_PM_OPS(exynos_mic_suspend, exynos_mic_resume, NULL)
- SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
- pm_runtime_force_resume)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(exynos_mic_pm_ops, exynos_mic_suspend,
+ exynos_mic_resume, NULL);
static int exynos_mic_probe(struct platform_device *pdev)
{
@@ -378,10 +379,11 @@ static int exynos_mic_probe(struct platform_device *pdev)
struct resource res;
int ret, i;
- mic = devm_kzalloc(dev, sizeof(*mic), GFP_KERNEL);
- if (!mic) {
- DRM_ERROR("mic: Failed to allocate memory for MIC object\n");
- ret = -ENOMEM;
+ mic = devm_drm_bridge_alloc(dev, struct exynos_mic, bridge, &mic_bridge_funcs);
+ if (IS_ERR(mic)) {
+ DRM_DEV_ERROR(dev,
+ "mic: Failed to allocate memory for MIC object\n");
+ ret = PTR_ERR(mic);
goto err;
}
@@ -389,12 +391,12 @@ static int exynos_mic_probe(struct platform_device *pdev)
ret = of_address_to_resource(dev->of_node, 0, &res);
if (ret) {
- DRM_ERROR("mic: Failed to get mem region for MIC\n");
+ DRM_DEV_ERROR(dev, "mic: Failed to get mem region for MIC\n");
goto err;
}
mic->reg = devm_ioremap(dev, res.start, resource_size(&res));
if (!mic->reg) {
- DRM_ERROR("mic: Failed to remap for MIC\n");
+ DRM_DEV_ERROR(dev, "mic: Failed to remap for MIC\n");
ret = -ENOMEM;
goto err;
}
@@ -402,7 +404,7 @@ static int exynos_mic_probe(struct platform_device *pdev)
mic->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
"samsung,disp-syscon");
if (IS_ERR(mic->sysreg)) {
- DRM_ERROR("mic: Failed to get system register.\n");
+ DRM_DEV_ERROR(dev, "mic: Failed to get system register.\n");
ret = PTR_ERR(mic->sysreg);
goto err;
}
@@ -410,8 +412,8 @@ static int exynos_mic_probe(struct platform_device *pdev)
for (i = 0; i < NUM_CLKS; i++) {
mic->clks[i] = devm_clk_get(dev, clk_names[i]);
if (IS_ERR(mic->clks[i])) {
- DRM_ERROR("mic: Failed to get clock (%s)\n",
- clk_names[i]);
+ DRM_DEV_ERROR(dev, "mic: Failed to get clock (%s)\n",
+ clk_names[i]);
ret = PTR_ERR(mic->clks[i]);
goto err;
}
@@ -419,7 +421,6 @@ static int exynos_mic_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mic);
- mic->bridge.funcs = &mic_bridge_funcs;
mic->bridge.of_node = dev->of_node;
drm_bridge_add(&mic->bridge);
@@ -430,7 +431,7 @@ static int exynos_mic_probe(struct platform_device *pdev)
if (ret)
goto err_pm;
- DRM_DEBUG_KMS("MIC has been probed\n");
+ DRM_DEV_DEBUG_KMS(dev, "MIC has been probed\n");
return 0;
@@ -440,7 +441,7 @@ err:
return ret;
}
-static int exynos_mic_remove(struct platform_device *pdev)
+static void exynos_mic_remove(struct platform_device *pdev)
{
struct exynos_mic *mic = platform_get_drvdata(pdev);
@@ -448,8 +449,6 @@ static int exynos_mic_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
drm_bridge_remove(&mic->bridge);
-
- return 0;
}
static const struct of_device_id exynos_mic_of_match[] = {
@@ -463,8 +462,7 @@ struct platform_driver mic_driver = {
.remove = exynos_mic_remove,
.driver = {
.name = "exynos-mic",
- .pm = &exynos_mic_pm_ops,
- .owner = THIS_MODULE,
+ .pm = pm_ptr(&exynos_mic_pm_ops),
.of_match_table = exynos_mic_of_match,
},
};
generated by cgit (git 2.34.1) at 2025-12-25 13:42:31 +0000