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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/video/fbdev/omap2/dss/dss.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/video/fbdev/omap2/dss/dss.c')
-rw-r--r--kernel/drivers/video/fbdev/omap2/dss/dss.c232
1 files changed, 160 insertions, 72 deletions
diff --git a/kernel/drivers/video/fbdev/omap2/dss/dss.c b/kernel/drivers/video/fbdev/omap2/dss/dss.c
index 7f978b6a3..9200a8668 100644
--- a/kernel/drivers/video/fbdev/omap2/dss/dss.c
+++ b/kernel/drivers/video/fbdev/omap2/dss/dss.c
@@ -39,6 +39,7 @@
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <linux/suspend.h>
+#include <linux/component.h>
#include <video/omapdss.h>
@@ -111,6 +112,14 @@ static const char * const dss_generic_clk_source_names[] = {
[OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI] = "DSI_PLL2_HSDIV_DSI",
};
+static bool dss_initialized;
+
+bool omapdss_is_initialized(void)
+{
+ return dss_initialized;
+}
+EXPORT_SYMBOL(omapdss_is_initialized);
+
static inline void dss_write_reg(const struct dss_reg idx, u32 val)
{
__raw_writel(val, dss.base + idx.idx);
@@ -811,7 +820,7 @@ static const enum omap_display_type dra7xx_ports[] = {
OMAP_DISPLAY_TYPE_DPI,
};
-static const struct dss_features omap24xx_dss_feats __initconst = {
+static const struct dss_features omap24xx_dss_feats = {
/*
* fck div max is really 16, but the divider range has gaps. The range
* from 1 to 6 has no gaps, so let's use that as a max.
@@ -824,7 +833,7 @@ static const struct dss_features omap24xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap2plus_ports),
};
-static const struct dss_features omap34xx_dss_feats __initconst = {
+static const struct dss_features omap34xx_dss_feats = {
.fck_div_max = 16,
.dss_fck_multiplier = 2,
.parent_clk_name = "dpll4_ck",
@@ -833,7 +842,7 @@ static const struct dss_features omap34xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap34xx_ports),
};
-static const struct dss_features omap3630_dss_feats __initconst = {
+static const struct dss_features omap3630_dss_feats = {
.fck_div_max = 32,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll4_ck",
@@ -842,7 +851,7 @@ static const struct dss_features omap3630_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap2plus_ports),
};
-static const struct dss_features omap44xx_dss_feats __initconst = {
+static const struct dss_features omap44xx_dss_feats = {
.fck_div_max = 32,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll_per_x2_ck",
@@ -851,7 +860,7 @@ static const struct dss_features omap44xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap2plus_ports),
};
-static const struct dss_features omap54xx_dss_feats __initconst = {
+static const struct dss_features omap54xx_dss_feats = {
.fck_div_max = 64,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll_per_x2_ck",
@@ -860,7 +869,7 @@ static const struct dss_features omap54xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap2plus_ports),
};
-static const struct dss_features am43xx_dss_feats __initconst = {
+static const struct dss_features am43xx_dss_feats = {
.fck_div_max = 0,
.dss_fck_multiplier = 0,
.parent_clk_name = NULL,
@@ -869,7 +878,7 @@ static const struct dss_features am43xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(omap2plus_ports),
};
-static const struct dss_features dra7xx_dss_feats __initconst = {
+static const struct dss_features dra7xx_dss_feats = {
.fck_div_max = 64,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll_per_x2_ck",
@@ -878,7 +887,7 @@ static const struct dss_features dra7xx_dss_feats __initconst = {
.num_ports = ARRAY_SIZE(dra7xx_ports),
};
-static int __init dss_init_features(struct platform_device *pdev)
+static int dss_init_features(struct platform_device *pdev)
{
const struct dss_features *src;
struct dss_features *dst;
@@ -932,7 +941,7 @@ static int __init dss_init_features(struct platform_device *pdev)
return 0;
}
-static int __init dss_init_ports(struct platform_device *pdev)
+static int dss_init_ports(struct platform_device *pdev)
{
struct device_node *parent = pdev->dev.of_node;
struct device_node *port;
@@ -976,7 +985,7 @@ static int __init dss_init_ports(struct platform_device *pdev)
return 0;
}
-static void __exit dss_uninit_ports(struct platform_device *pdev)
+static void dss_uninit_ports(struct platform_device *pdev)
{
struct device_node *parent = pdev->dev.of_node;
struct device_node *port;
@@ -1018,14 +1027,74 @@ static void __exit dss_uninit_ports(struct platform_device *pdev)
} while ((port = omapdss_of_get_next_port(parent, port)) != NULL);
}
+static int dss_video_pll_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct regulator *pll_regulator;
+ int r;
+
+ if (!np)
+ return 0;
+
+ if (of_property_read_bool(np, "syscon-pll-ctrl")) {
+ dss.syscon_pll_ctrl = syscon_regmap_lookup_by_phandle(np,
+ "syscon-pll-ctrl");
+ if (IS_ERR(dss.syscon_pll_ctrl)) {
+ dev_err(&pdev->dev,
+ "failed to get syscon-pll-ctrl regmap\n");
+ return PTR_ERR(dss.syscon_pll_ctrl);
+ }
+
+ if (of_property_read_u32_index(np, "syscon-pll-ctrl", 1,
+ &dss.syscon_pll_ctrl_offset)) {
+ dev_err(&pdev->dev,
+ "failed to get syscon-pll-ctrl offset\n");
+ return -EINVAL;
+ }
+ }
+
+ pll_regulator = devm_regulator_get(&pdev->dev, "vdda_video");
+ if (IS_ERR(pll_regulator)) {
+ r = PTR_ERR(pll_regulator);
+
+ switch (r) {
+ case -ENOENT:
+ pll_regulator = NULL;
+ break;
+
+ case -EPROBE_DEFER:
+ return -EPROBE_DEFER;
+
+ default:
+ DSSERR("can't get DPLL VDDA regulator\n");
+ return r;
+ }
+ }
+
+ if (of_property_match_string(np, "reg-names", "pll1") >= 0) {
+ dss.video1_pll = dss_video_pll_init(pdev, 0, pll_regulator);
+ if (IS_ERR(dss.video1_pll))
+ return PTR_ERR(dss.video1_pll);
+ }
+
+ if (of_property_match_string(np, "reg-names", "pll2") >= 0) {
+ dss.video2_pll = dss_video_pll_init(pdev, 1, pll_regulator);
+ if (IS_ERR(dss.video2_pll)) {
+ dss_video_pll_uninit(dss.video1_pll);
+ return PTR_ERR(dss.video2_pll);
+ }
+ }
+
+ return 0;
+}
+
/* DSS HW IP initialisation */
-static int __init omap_dsshw_probe(struct platform_device *pdev)
+static int dss_bind(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct resource *dss_mem;
- struct device_node *np = pdev->dev.of_node;
u32 rev;
int r;
- struct regulator *pll_regulator;
dss.pdev = pdev;
@@ -1054,6 +1123,14 @@ static int __init omap_dsshw_probe(struct platform_device *pdev)
if (r)
goto err_setup_clocks;
+ r = dss_video_pll_probe(pdev);
+ if (r)
+ goto err_pll_init;
+
+ r = dss_init_ports(pdev);
+ if (r)
+ goto err_init_ports;
+
pm_runtime_enable(&pdev->dev);
r = dss_runtime_get();
@@ -1078,86 +1155,48 @@ static int __init omap_dsshw_probe(struct platform_device *pdev)
dss.lcd_clk_source[0] = OMAP_DSS_CLK_SRC_FCK;
dss.lcd_clk_source[1] = OMAP_DSS_CLK_SRC_FCK;
- dss_init_ports(pdev);
-
- if (np && of_property_read_bool(np, "syscon-pll-ctrl")) {
- dss.syscon_pll_ctrl = syscon_regmap_lookup_by_phandle(np,
- "syscon-pll-ctrl");
- if (IS_ERR(dss.syscon_pll_ctrl)) {
- dev_err(&pdev->dev,
- "failed to get syscon-pll-ctrl regmap\n");
- return PTR_ERR(dss.syscon_pll_ctrl);
- }
-
- if (of_property_read_u32_index(np, "syscon-pll-ctrl", 1,
- &dss.syscon_pll_ctrl_offset)) {
- dev_err(&pdev->dev,
- "failed to get syscon-pll-ctrl offset\n");
- return -EINVAL;
- }
- }
-
- pll_regulator = devm_regulator_get(&pdev->dev, "vdda_video");
- if (IS_ERR(pll_regulator)) {
- r = PTR_ERR(pll_regulator);
-
- switch (r) {
- case -ENOENT:
- pll_regulator = NULL;
- break;
-
- case -EPROBE_DEFER:
- return -EPROBE_DEFER;
-
- default:
- DSSERR("can't get DPLL VDDA regulator\n");
- return r;
- }
- }
-
- if (of_property_match_string(np, "reg-names", "pll1") >= 0) {
- dss.video1_pll = dss_video_pll_init(pdev, 0, pll_regulator);
- if (IS_ERR(dss.video1_pll)) {
- r = PTR_ERR(dss.video1_pll);
- goto err_pll_init;
- }
- }
-
- if (of_property_match_string(np, "reg-names", "pll2") >= 0) {
- dss.video2_pll = dss_video_pll_init(pdev, 1, pll_regulator);
- if (IS_ERR(dss.video2_pll)) {
- r = PTR_ERR(dss.video2_pll);
- goto err_pll_init;
- }
- }
-
rev = dss_read_reg(DSS_REVISION);
printk(KERN_INFO "OMAP DSS rev %d.%d\n",
FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
dss_runtime_put();
+ r = component_bind_all(&pdev->dev, NULL);
+ if (r)
+ goto err_component;
+
dss_debugfs_create_file("dss", dss_dump_regs);
pm_set_vt_switch(0);
+ dss_initialized = true;
+
return 0;
-err_pll_init:
+err_component:
+err_runtime_get:
+ pm_runtime_disable(&pdev->dev);
+ dss_uninit_ports(pdev);
+err_init_ports:
if (dss.video1_pll)
dss_video_pll_uninit(dss.video1_pll);
if (dss.video2_pll)
dss_video_pll_uninit(dss.video2_pll);
-err_runtime_get:
- pm_runtime_disable(&pdev->dev);
+err_pll_init:
err_setup_clocks:
dss_put_clocks();
return r;
}
-static int __exit omap_dsshw_remove(struct platform_device *pdev)
+static void dss_unbind(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ dss_initialized = false;
+
+ component_unbind_all(&pdev->dev, NULL);
+
if (dss.video1_pll)
dss_video_pll_uninit(dss.video1_pll);
@@ -1169,7 +1208,55 @@ static int __exit omap_dsshw_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
dss_put_clocks();
+}
+
+static const struct component_master_ops dss_component_ops = {
+ .bind = dss_bind,
+ .unbind = dss_unbind,
+};
+static int dss_component_compare(struct device *dev, void *data)
+{
+ struct device *child = data;
+ return dev == child;
+}
+
+static int dss_add_child_component(struct device *dev, void *data)
+{
+ struct component_match **match = data;
+
+ /*
+ * HACK
+ * We don't have a working driver for rfbi, so skip it here always.
+ * Otherwise dss will never get probed successfully, as it will wait
+ * for rfbi to get probed.
+ */
+ if (strstr(dev_name(dev), "rfbi"))
+ return 0;
+
+ component_match_add(dev->parent, match, dss_component_compare, dev);
+
+ return 0;
+}
+
+static int dss_probe(struct platform_device *pdev)
+{
+ struct component_match *match = NULL;
+ int r;
+
+ /* add all the child devices as components */
+ device_for_each_child(&pdev->dev, &match, dss_add_child_component);
+
+ r = component_master_add_with_match(&pdev->dev, &dss_component_ops, match);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static int dss_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &dss_component_ops);
return 0;
}
@@ -1215,7 +1302,8 @@ static const struct of_device_id dss_of_match[] = {
MODULE_DEVICE_TABLE(of, dss_of_match);
static struct platform_driver omap_dsshw_driver = {
- .remove = __exit_p(omap_dsshw_remove),
+ .probe = dss_probe,
+ .remove = dss_remove,
.driver = {
.name = "omapdss_dss",
.pm = &dss_pm_ops,
@@ -1226,7 +1314,7 @@ static struct platform_driver omap_dsshw_driver = {
int __init dss_init_platform_driver(void)
{
- return platform_driver_probe(&omap_dsshw_driver, omap_dsshw_probe);
+ return platform_driver_register(&omap_dsshw_driver);
}
void dss_uninit_platform_driver(void)