[PATCH 34/48] drm: omapdrm: sdi: Allocate the sdi private data structure dynamically
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Fri Oct 13 14:59:30 UTC 2017
The sdi private data structure is currently stored as a global
variable. While no platform with multiple SDI encoders currently exists
nor is planned, this doesn't comply with the kernel device model and
should thus be fixed.
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
drivers/gpu/drm/omapdrm/dss/sdi.c | 122 +++++++++++++++++++++-----------------
1 file changed, 69 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
index ac436826914a..a35dc51c5a6a 100644
--- a/drivers/gpu/drm/omapdrm/dss/sdi.c
+++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
@@ -31,7 +31,7 @@
#include "omapdss.h"
#include "dss.h"
-static struct {
+struct sdi_device {
struct platform_device *pdev;
struct dss_device *dss;
@@ -43,9 +43,9 @@ static struct {
int datapairs;
struct omap_dss_device output;
+};
- bool port_initialized;
-} sdi;
+#define dssdev_to_sdi(dssdev) container_of(dssdev, struct sdi_device, output)
struct sdi_clk_calc_ctx {
unsigned long pck_min, pck_max;
@@ -77,9 +77,9 @@ static bool dpi_calc_dss_cb(unsigned long fck, void *data)
dpi_calc_dispc_cb, ctx);
}
-static int sdi_calc_clock_div(unsigned long pclk,
- unsigned long *fck,
- struct dispc_clock_info *dispc_cinfo)
+static int sdi_calc_clock_div(struct sdi_device *sdi, unsigned long pclk,
+ unsigned long *fck,
+ struct dispc_clock_info *dispc_cinfo)
{
int i;
struct sdi_clk_calc_ctx ctx;
@@ -101,7 +101,7 @@ static int sdi_calc_clock_div(unsigned long pclk,
ctx.pck_min = 0;
ctx.pck_max = pclk + 1000 * i * i * i;
- ok = dss_div_calc(sdi.dss, pclk, ctx.pck_min,
+ ok = dss_div_calc(sdi->dss, pclk, ctx.pck_min,
dpi_calc_dss_cb, &ctx);
if (ok) {
*fck = ctx.fck;
@@ -113,26 +113,27 @@ static int sdi_calc_clock_div(unsigned long pclk,
return -EINVAL;
}
-static void sdi_config_lcd_manager(struct omap_dss_device *dssdev)
+static void sdi_config_lcd_manager(struct sdi_device *sdi)
{
- enum omap_channel channel = dssdev->dispc_channel;
+ enum omap_channel channel = sdi->output.dispc_channel;
- sdi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
+ sdi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
- sdi.mgr_config.stallmode = false;
- sdi.mgr_config.fifohandcheck = false;
+ sdi->mgr_config.stallmode = false;
+ sdi->mgr_config.fifohandcheck = false;
- sdi.mgr_config.video_port_width = 24;
- sdi.mgr_config.lcden_sig_polarity = 1;
+ sdi->mgr_config.video_port_width = 24;
+ sdi->mgr_config.lcden_sig_polarity = 1;
- dss_mgr_set_lcd_config(channel, &sdi.mgr_config);
+ dss_mgr_set_lcd_config(channel, &sdi->mgr_config);
}
static int sdi_display_enable(struct omap_dss_device *dssdev)
{
- struct omap_dss_device *out = &sdi.output;
+ struct sdi_device *sdi = dssdev_to_sdi(dssdev);
+ struct omap_dss_device *out = &sdi->output;
enum omap_channel channel = dssdev->dispc_channel;
- struct videomode *vm = &sdi.vm;
+ struct videomode *vm = &sdi->vm;
unsigned long fck;
struct dispc_clock_info dispc_cinfo;
unsigned long pck;
@@ -143,7 +144,7 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
return -ENODEV;
}
- r = regulator_enable(sdi.vdds_sdi_reg);
+ r = regulator_enable(sdi->vdds_sdi_reg);
if (r)
goto err_reg_enable;
@@ -154,11 +155,11 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
/* 15.5.9.1.2 */
vm->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE | DISPLAY_FLAGS_SYNC_POSEDGE;
- r = sdi_calc_clock_div(vm->pixelclock, &fck, &dispc_cinfo);
+ r = sdi_calc_clock_div(sdi, vm->pixelclock, &fck, &dispc_cinfo);
if (r)
goto err_calc_clock_div;
- sdi.mgr_config.clock_info = dispc_cinfo;
+ sdi->mgr_config.clock_info = dispc_cinfo;
pck = fck / dispc_cinfo.lck_div / dispc_cinfo.pck_div;
@@ -172,11 +173,11 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
dss_mgr_set_timings(channel, vm);
- r = dss_set_fck_rate(sdi.dss, fck);
+ r = dss_set_fck_rate(sdi->dss, fck);
if (r)
goto err_set_dss_clock_div;
- sdi_config_lcd_manager(dssdev);
+ sdi_config_lcd_manager(sdi);
/*
* LCLK and PCLK divisors are located in shadow registers, and we
@@ -189,10 +190,10 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
* need to care about the shadow register mechanism for pck-free. The
* exact reason for this is unknown.
*/
- dispc_mgr_set_clock_div(channel, &sdi.mgr_config.clock_info);
+ dispc_mgr_set_clock_div(channel, &sdi->mgr_config.clock_info);
- dss_sdi_init(sdi.dss, sdi.datapairs);
- r = dss_sdi_enable(sdi.dss);
+ dss_sdi_init(sdi->dss, sdi->datapairs);
+ r = dss_sdi_enable(sdi->dss);
if (r)
goto err_sdi_enable;
mdelay(2);
@@ -204,40 +205,45 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
return 0;
err_mgr_enable:
- dss_sdi_disable(sdi.dss);
+ dss_sdi_disable(sdi->dss);
err_sdi_enable:
err_set_dss_clock_div:
err_calc_clock_div:
dispc_runtime_put();
err_get_dispc:
- regulator_disable(sdi.vdds_sdi_reg);
+ regulator_disable(sdi->vdds_sdi_reg);
err_reg_enable:
return r;
}
static void sdi_display_disable(struct omap_dss_device *dssdev)
{
+ struct sdi_device *sdi = dssdev_to_sdi(dssdev);
enum omap_channel channel = dssdev->dispc_channel;
dss_mgr_disable(channel);
- dss_sdi_disable(sdi.dss);
+ dss_sdi_disable(sdi->dss);
dispc_runtime_put();
- regulator_disable(sdi.vdds_sdi_reg);
+ regulator_disable(sdi->vdds_sdi_reg);
}
static void sdi_set_timings(struct omap_dss_device *dssdev,
struct videomode *vm)
{
- sdi.vm = *vm;
+ struct sdi_device *sdi = dssdev_to_sdi(dssdev);
+
+ sdi->vm = *vm;
}
static void sdi_get_timings(struct omap_dss_device *dssdev,
struct videomode *vm)
{
- *vm = sdi.vm;
+ struct sdi_device *sdi = dssdev_to_sdi(dssdev);
+
+ *vm = sdi->vm;
}
static int sdi_check_timings(struct omap_dss_device *dssdev,
@@ -254,21 +260,21 @@ static int sdi_check_timings(struct omap_dss_device *dssdev,
return 0;
}
-static int sdi_init_regulator(void)
+static int sdi_init_regulator(struct sdi_device *sdi)
{
struct regulator *vdds_sdi;
- if (sdi.vdds_sdi_reg)
+ if (sdi->vdds_sdi_reg)
return 0;
- vdds_sdi = devm_regulator_get(&sdi.pdev->dev, "vdds_sdi");
+ vdds_sdi = devm_regulator_get(&sdi->pdev->dev, "vdds_sdi");
if (IS_ERR(vdds_sdi)) {
if (PTR_ERR(vdds_sdi) != -EPROBE_DEFER)
DSSERR("can't get VDDS_SDI regulator\n");
return PTR_ERR(vdds_sdi);
}
- sdi.vdds_sdi_reg = vdds_sdi;
+ sdi->vdds_sdi_reg = vdds_sdi;
return 0;
}
@@ -276,10 +282,11 @@ static int sdi_init_regulator(void)
static int sdi_connect(struct omap_dss_device *dssdev,
struct omap_dss_device *dst)
{
+ struct sdi_device *sdi = dssdev_to_sdi(dssdev);
enum omap_channel channel = dssdev->dispc_channel;
int r;
- r = sdi_init_regulator();
+ r = sdi_init_regulator(sdi);
if (r)
return r;
@@ -325,11 +332,11 @@ static const struct omapdss_sdi_ops sdi_ops = {
.get_timings = sdi_get_timings,
};
-static void sdi_init_output(struct platform_device *pdev)
+static void sdi_init_output(struct sdi_device *sdi)
{
- struct omap_dss_device *out = &sdi.output;
+ struct omap_dss_device *out = &sdi->output;
- out->dev = &pdev->dev;
+ out->dev = &sdi->pdev->dev;
out->id = OMAP_DSS_OUTPUT_SDI;
out->output_type = OMAP_DISPLAY_TYPE_SDI;
out->name = "sdi.0";
@@ -342,23 +349,28 @@ static void sdi_init_output(struct platform_device *pdev)
omapdss_register_output(out);
}
-static void sdi_uninit_output(struct platform_device *pdev)
+static void sdi_uninit_output(struct sdi_device *sdi)
{
- struct omap_dss_device *out = &sdi.output;
-
- omapdss_unregister_output(out);
+ omapdss_unregister_output(&sdi->output);
}
int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
struct device_node *port)
{
+ struct sdi_device *sdi;
struct device_node *ep;
u32 datapairs;
int r;
+ sdi = kzalloc(sizeof(*sdi), GFP_KERNEL);
+ if (!sdi)
+ return -ENOMEM;
+
ep = of_get_next_child(port, NULL);
- if (!ep)
- return 0;
+ if (!ep) {
+ r = 0;
+ goto err_free;
+ }
r = of_property_read_u32(ep, "datapairs", &datapairs);
if (r) {
@@ -366,29 +378,33 @@ int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
goto err_datapairs;
}
- sdi.datapairs = datapairs;
- sdi.dss = dss;
+ sdi->datapairs = datapairs;
+ sdi->dss = dss;
of_node_put(ep);
- sdi.pdev = pdev;
+ sdi->pdev = pdev;
+ port->data = sdi;
- sdi_init_output(pdev);
-
- sdi.port_initialized = true;
+ sdi_init_output(sdi);
return 0;
err_datapairs:
of_node_put(ep);
+err_free:
+ kfree(sdi);
return r;
}
void sdi_uninit_port(struct device_node *port)
{
- if (!sdi.port_initialized)
+ struct sdi_device *sdi = port->data;
+
+ if (!sdi)
return;
- sdi_uninit_output(sdi.pdev);
+ sdi_uninit_output(sdi);
+ kfree(sdi);
}
--
Regards,
Laurent Pinchart
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