[PATCH v2] davinci: vpbe: pass different platform names to handle different ip's

From: Prabhakar Lad
Date: Tue Nov 20 2012 - 06:30:36 EST

From: Lad, Prabhakar <prabhakar.lad@xxxxxx>

The vpbe driver can handle different platforms DM644X, DM36X and
DM355. To differentiate between this platforms venc_type/vpbe_type
was passed as part of platform data which was incorrect. The correct
way to differentiate to handle this case is by passing different
platform names.

This patch creates platform_device_id[] array supporting different
platforms and assigns id_table to the platform driver, and finally
in the probe gets the actual device by using platform_get_device_id()
and gets the appropriate driver data for that platform.

Taking this approach will also make the DT transition easier.

Signed-off-by: Lad, Prabhakar <prabhakar.lad@xxxxxx>
Signed-off-by: Manjunath Hadli <manjunath.hadli@xxxxxx>
Acked-by: Sekhar Nori <nsekhar@xxxxxx>
---
Changes for v2:
1: Fixed review comments pointed by Sekhar.

arch/arm/mach-davinci/board-dm644x-evm.c | 8 ++--
arch/arm/mach-davinci/dm644x.c | 10 +---
drivers/media/platform/davinci/vpbe.c | 4 +-
drivers/media/platform/davinci/vpbe_display.c | 2 +-
drivers/media/platform/davinci/vpbe_osd.c | 35 ++++++++++----
drivers/media/platform/davinci/vpbe_venc.c | 65 +++++++++++++++++--------
include/media/davinci/vpbe_osd.h | 5 +-
include/media/davinci/vpbe_venc.h | 5 +-
8 files changed, 84 insertions(+), 50 deletions(-)

diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index f22572ce..b00ade4 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -689,7 +689,7 @@ static struct vpbe_output dm644xevm_vpbe_outputs[] = {
.std = VENC_STD_ALL,
.capabilities = V4L2_OUT_CAP_STD,
},
- .subdev_name = VPBE_VENC_SUBDEV_NAME,
+ .subdev_name = DM644X_VPBE_VENC_SUBDEV_NAME,
.default_mode = "ntsc",
.num_modes = ARRAY_SIZE(dm644xevm_enc_std_timing),
.modes = dm644xevm_enc_std_timing,
@@ -701,7 +701,7 @@ static struct vpbe_output dm644xevm_vpbe_outputs[] = {
.type = V4L2_OUTPUT_TYPE_ANALOG,
.capabilities = V4L2_OUT_CAP_DV_TIMINGS,
},
- .subdev_name = VPBE_VENC_SUBDEV_NAME,
+ .subdev_name = DM644X_VPBE_VENC_SUBDEV_NAME,
.default_mode = "480p59_94",
.num_modes = ARRAY_SIZE(dm644xevm_enc_preset_timing),
.modes = dm644xevm_enc_preset_timing,
@@ -712,10 +712,10 @@ static struct vpbe_config dm644xevm_display_cfg = {
.module_name = "dm644x-vpbe-display",
.i2c_adapter_id = 1,
.osd = {
- .module_name = VPBE_OSD_SUBDEV_NAME,
+ .module_name = DM644X_VPBE_OSD_SUBDEV_NAME,
},
.venc = {
- .module_name = VPBE_VENC_SUBDEV_NAME,
+ .module_name = DM644X_VPBE_VENC_SUBDEV_NAME,
},
.num_outputs = ARRAY_SIZE(dm644xevm_vpbe_outputs),
.outputs = dm644xevm_vpbe_outputs,
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index cd0c8b1..98d79f1 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -669,19 +669,14 @@ static struct resource dm644x_osd_resources[] = {
},
};

-static struct osd_platform_data dm644x_osd_data = {
- .vpbe_type = VPBE_VERSION_1,
-};
-
static struct platform_device dm644x_osd_dev = {
- .name = VPBE_OSD_SUBDEV_NAME,
+ .name = DM644X_VPBE_OSD_SUBDEV_NAME,
.id = -1,
.num_resources = ARRAY_SIZE(dm644x_osd_resources),
.resource = dm644x_osd_resources,
.dev = {
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
- .platform_data = &dm644x_osd_data,
},
};

@@ -752,12 +747,11 @@ static struct platform_device dm644x_vpbe_display = {
};

static struct venc_platform_data dm644x_venc_pdata = {
- .venc_type = VPBE_VERSION_1,
.setup_clock = dm644x_venc_setup_clock,
};

static struct platform_device dm644x_venc_dev = {
- .name = VPBE_VENC_SUBDEV_NAME,
+ .name = DM644X_VPBE_VENC_SUBDEV_NAME,
.id = -1,
.num_resources = ARRAY_SIZE(dm644x_venc_resources),
.resource = dm644x_venc_resources,
diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
index 7f5cf9b..dd670cd 100644
--- a/drivers/media/platform/davinci/vpbe.c
+++ b/drivers/media/platform/davinci/vpbe.c
@@ -558,9 +558,9 @@ static int platform_device_get(struct device *dev, void *data)
struct platform_device *pdev = to_platform_device(dev);
struct vpbe_device *vpbe_dev = data;

- if (strcmp("vpbe-osd", pdev->name) == 0)
+ if (strstr(pdev->name, "vpbe-osd") != NULL)
vpbe_dev->osd_device = platform_get_drvdata(pdev);
- if (strcmp("vpbe-venc", pdev->name) == 0)
+ if (strstr(pdev->name, "vpbe-venc") != NULL)
vpbe_dev->venc_device = dev_get_platdata(&pdev->dev);

return 0;
diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c
index 2bfde79..3846890 100644
--- a/drivers/media/platform/davinci/vpbe_display.c
+++ b/drivers/media/platform/davinci/vpbe_display.c
@@ -1656,7 +1656,7 @@ static int vpbe_device_get(struct device *dev, void *data)
if (strcmp("vpbe_controller", pdev->name) == 0)
vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);

- if (strcmp("vpbe-osd", pdev->name) == 0)
+ if (strstr(pdev->name, "vpbe-osd") != NULL)
vpbe_disp->osd_device = platform_get_drvdata(pdev);

return 0;
diff --git a/drivers/media/platform/davinci/vpbe_osd.c b/drivers/media/platform/davinci/vpbe_osd.c
index 707f243..12ad17c 100644
--- a/drivers/media/platform/davinci/vpbe_osd.c
+++ b/drivers/media/platform/davinci/vpbe_osd.c
@@ -39,7 +39,22 @@
#include <linux/io.h>
#include "vpbe_osd_regs.h"

-#define MODULE_NAME VPBE_OSD_SUBDEV_NAME
+#define MODULE_NAME "davinci-vpbe-osd"
+
+static struct platform_device_id vpbe_osd_devtype[] = {
+ {
+ .name = DM644X_VPBE_OSD_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_1,
+ }, {
+ .name = DM365_VPBE_OSD_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_2,
+ }, {
+ .name = DM355_VPBE_OSD_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_3,
+ },
+};
+
+MODULE_DEVICE_TABLE(platform, vpbe_osd_devtype);

/* register access routines */
static inline u32 osd_read(struct osd_state *sd, u32 offset)
@@ -129,7 +144,7 @@ static int _osd_dm6446_vid0_pingpong(struct osd_state *sd,
struct osd_platform_data *pdata;

pdata = (struct osd_platform_data *)sd->dev->platform_data;
- if (pdata->field_inv_wa_enable) {
+ if (pdata != NULL && pdata->field_inv_wa_enable) {

if (!field_inversion || !lconfig->interlaced) {
osd_write(sd, fb_base_phys & ~0x1F, OSD_VIDWIN0ADR);
@@ -1526,7 +1541,7 @@ static const struct vpbe_osd_ops osd_ops = {

static int osd_probe(struct platform_device *pdev)
{
- struct osd_platform_data *pdata;
+ const struct platform_device_id *pdev_id;
struct osd_state *osd;
struct resource *res;
int ret = 0;
@@ -1535,16 +1550,15 @@ static int osd_probe(struct platform_device *pdev)
if (osd == NULL)
return -ENOMEM;

- osd->dev = &pdev->dev;
- pdata = (struct osd_platform_data *)pdev->dev.platform_data;
- osd->vpbe_type = (enum vpbe_version)pdata->vpbe_type;
- if (NULL == pdev->dev.platform_data) {
- dev_err(osd->dev, "No platform data defined for OSD"
- " sub device\n");
- ret = -ENOENT;
+ pdev_id = platform_get_device_id(pdev);
+ if (!pdev_id) {
+ ret = -EINVAL;
goto free_mem;
}

+ osd->dev = &pdev->dev;
+ osd->vpbe_type = pdev_id->driver_data;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(osd->dev, "Unable to get OSD register address map\n");
@@ -1595,6 +1609,7 @@ static struct platform_driver osd_driver = {
.name = MODULE_NAME,
.owner = THIS_MODULE,
},
+ .id_table = vpbe_osd_devtype
};

module_platform_driver(osd_driver);
diff --git a/drivers/media/platform/davinci/vpbe_venc.c b/drivers/media/platform/davinci/vpbe_venc.c
index aed7369..bdbebd5 100644
--- a/drivers/media/platform/davinci/vpbe_venc.c
+++ b/drivers/media/platform/davinci/vpbe_venc.c
@@ -38,7 +38,22 @@

#include "vpbe_venc_regs.h"

-#define MODULE_NAME VPBE_VENC_SUBDEV_NAME
+#define MODULE_NAME "davinci-vpbe-venc"
+
+static struct platform_device_id vpbe_venc_devtype[] = {
+ {
+ .name = DM644X_VPBE_VENC_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_1,
+ }, {
+ .name = DM365_VPBE_VENC_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_2,
+ }, {
+ .name = DM355_VPBE_VENC_SUBDEV_NAME,
+ .driver_data = VPBE_VERSION_3,
+ },
+};
+
+MODULE_DEVICE_TABLE(platform, vpbe_venc_devtype);

static int debug = 2;
module_param(debug, int, 0644);
@@ -54,6 +69,7 @@ struct venc_state {
spinlock_t lock;
void __iomem *venc_base;
void __iomem *vdaccfg_reg;
+ enum vpbe_version venc_type;
};

static inline struct venc_state *to_state(struct v4l2_subdev *sd)
@@ -127,7 +143,7 @@ static int venc_set_dac(struct v4l2_subdev *sd, u32 out_index)
static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
{
struct venc_state *venc = to_state(sd);
- struct venc_platform_data *pdata = venc->pdata;
+
v4l2_dbg(debug, 2, sd, "venc_enabledigitaloutput\n");

if (benable) {
@@ -159,7 +175,7 @@ static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)

/* Disable LCD output control (accepting default polarity) */
venc_write(sd, VENC_LCDOUT, 0);
- if (pdata->venc_type != VPBE_VERSION_3)
+ if (venc->venc_type != VPBE_VERSION_3)
venc_write(sd, VENC_CMPNT, 0x100);
venc_write(sd, VENC_HSPLS, 0);
venc_write(sd, VENC_HINT, 0);
@@ -203,11 +219,11 @@ static int venc_set_ntsc(struct v4l2_subdev *sd)

venc_enabledigitaloutput(sd, 0);

- if (pdata->venc_type == VPBE_VERSION_3) {
+ if (venc->venc_type == VPBE_VERSION_3) {
venc_write(sd, VENC_CLKCTL, 0x01);
venc_write(sd, VENC_VIDCTL, 0);
val = vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
- } else if (pdata->venc_type == VPBE_VERSION_2) {
+ } else if (venc->venc_type == VPBE_VERSION_2) {
venc_write(sd, VENC_CLKCTL, 0x01);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
@@ -238,7 +254,6 @@ static int venc_set_ntsc(struct v4l2_subdev *sd)
static int venc_set_pal(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
- struct venc_platform_data *pdata = venc->pdata;

v4l2_dbg(debug, 2, sd, "venc_set_pal\n");

@@ -249,11 +264,11 @@ static int venc_set_pal(struct v4l2_subdev *sd)

venc_enabledigitaloutput(sd, 0);

- if (pdata->venc_type == VPBE_VERSION_3) {
+ if (venc->venc_type == VPBE_VERSION_3) {
venc_write(sd, VENC_CLKCTL, 0x1);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
- } else if (pdata->venc_type == VPBE_VERSION_2) {
+ } else if (venc->venc_type == VPBE_VERSION_2) {
venc_write(sd, VENC_CLKCTL, 0x1);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
@@ -293,8 +308,8 @@ static int venc_set_480p59_94(struct v4l2_subdev *sd)
struct venc_platform_data *pdata = venc->pdata;

v4l2_dbg(debug, 2, sd, "venc_set_480p59_94\n");
- if ((pdata->venc_type != VPBE_VERSION_1) &&
- (pdata->venc_type != VPBE_VERSION_2))
+ if (venc->venc_type != VPBE_VERSION_1 &&
+ venc->venc_type != VPBE_VERSION_2)
return -EINVAL;

/* Setup clock at VPSS & VENC for SD */
@@ -303,12 +318,12 @@ static int venc_set_480p59_94(struct v4l2_subdev *sd)

venc_enabledigitaloutput(sd, 0);

- if (pdata->venc_type == VPBE_VERSION_2)
+ if (venc->venc_type == VPBE_VERSION_2)
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);

- if (pdata->venc_type == VPBE_VERSION_1) {
+ if (venc->venc_type == VPBE_VERSION_1) {
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
VENC_VDPRO_DAFRQ);
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
@@ -341,8 +356,8 @@ static int venc_set_576p50(struct v4l2_subdev *sd)

v4l2_dbg(debug, 2, sd, "venc_set_576p50\n");

- if ((pdata->venc_type != VPBE_VERSION_1) &&
- (pdata->venc_type != VPBE_VERSION_2))
+ if (venc->venc_type != VPBE_VERSION_1 &&
+ venc->venc_type != VPBE_VERSION_2)
return -EINVAL;
/* Setup clock at VPSS & VENC for SD */
if (pdata->setup_clock(VPBE_ENC_CUSTOM_TIMINGS, 27000000) < 0)
@@ -350,13 +365,13 @@ static int venc_set_576p50(struct v4l2_subdev *sd)

venc_enabledigitaloutput(sd, 0);

- if (pdata->venc_type == VPBE_VERSION_2)
+ if (venc->venc_type == VPBE_VERSION_2)
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);

venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);

- if (pdata->venc_type == VPBE_VERSION_1) {
+ if (venc->venc_type == VPBE_VERSION_1) {
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
VENC_VDPRO_DAFRQ);
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
@@ -460,14 +475,14 @@ static int venc_s_dv_timings(struct v4l2_subdev *sd,
else if (height == 480)
return venc_set_480p59_94(sd);
else if ((height == 720) &&
- (venc->pdata->venc_type == VPBE_VERSION_2)) {
+ (venc->venc_type == VPBE_VERSION_2)) {
/* TBD setup internal 720p mode here */
ret = venc_set_720p60_internal(sd);
/* for DM365 VPBE, there is DAC inside */
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
return ret;
} else if ((height == 1080) &&
- (venc->pdata->venc_type == VPBE_VERSION_2)) {
+ (venc->venc_type == VPBE_VERSION_2)) {
/* TBD setup internal 1080i mode here */
ret = venc_set_1080i30_internal(sd);
/* for DM365 VPBE, there is DAC inside */
@@ -556,7 +571,7 @@ static int venc_device_get(struct device *dev, void *data)
struct platform_device *pdev = to_platform_device(dev);
struct venc_state **venc = data;

- if (strcmp(MODULE_NAME, pdev->name) == 0)
+ if (strstr(pdev->name, "vpbe-venc") != NULL)
*venc = platform_get_drvdata(pdev);

return 0;
@@ -593,6 +608,7 @@ EXPORT_SYMBOL(venc_sub_dev_init);

static int venc_probe(struct platform_device *pdev)
{
+ const struct platform_device_id *pdev_id;
struct venc_state *venc;
struct resource *res;
int ret;
@@ -601,6 +617,12 @@ static int venc_probe(struct platform_device *pdev)
if (venc == NULL)
return -ENOMEM;

+ pdev_id = platform_get_device_id(pdev);
+ if (!pdev_id) {
+ ret = -EINVAL;
+ goto free_mem;
+ }
+ venc->venc_type = pdev_id->driver_data;
venc->pdev = &pdev->dev;
venc->pdata = pdev->dev.platform_data;
if (NULL == venc->pdata) {
@@ -630,7 +652,7 @@ static int venc_probe(struct platform_device *pdev)
goto release_venc_mem_region;
}

- if (venc->pdata->venc_type != VPBE_VERSION_1) {
+ if (venc->venc_type != VPBE_VERSION_1) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_err(venc->pdev,
@@ -681,7 +703,7 @@ static int venc_remove(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
iounmap((void *)venc->venc_base);
release_mem_region(res->start, resource_size(res));
- if (venc->pdata->venc_type != VPBE_VERSION_1) {
+ if (venc->venc_type != VPBE_VERSION_1) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
iounmap((void *)venc->vdaccfg_reg);
release_mem_region(res->start, resource_size(res));
@@ -698,6 +720,7 @@ static struct platform_driver venc_driver = {
.name = MODULE_NAME,
.owner = THIS_MODULE,
},
+ .id_table = vpbe_venc_devtype
};

module_platform_driver(venc_driver);
diff --git a/include/media/davinci/vpbe_osd.h b/include/media/davinci/vpbe_osd.h
index 5ab0d8d..42628fc 100644
--- a/include/media/davinci/vpbe_osd.h
+++ b/include/media/davinci/vpbe_osd.h
@@ -26,7 +26,9 @@

#include <media/davinci/vpbe_types.h>

-#define VPBE_OSD_SUBDEV_NAME "vpbe-osd"
+#define DM644X_VPBE_OSD_SUBDEV_NAME "dm644x,vpbe-osd"
+#define DM365_VPBE_OSD_SUBDEV_NAME "dm365,vpbe-osd"
+#define DM355_VPBE_OSD_SUBDEV_NAME "dm355,vpbe-osd"

/**
* enum osd_layer
@@ -387,7 +389,6 @@ struct osd_state {
};

struct osd_platform_data {
- enum vpbe_version vpbe_type;
int field_inv_wa_enable;
};

diff --git a/include/media/davinci/vpbe_venc.h b/include/media/davinci/vpbe_venc.h
index cc78c2e..476fafc 100644
--- a/include/media/davinci/vpbe_venc.h
+++ b/include/media/davinci/vpbe_venc.h
@@ -20,7 +20,9 @@
#include <media/v4l2-subdev.h>
#include <media/davinci/vpbe_types.h>

-#define VPBE_VENC_SUBDEV_NAME "vpbe-venc"
+#define DM644X_VPBE_VENC_SUBDEV_NAME "dm644x,vpbe-venc"
+#define DM365_VPBE_VENC_SUBDEV_NAME "dm365,vpbe-venc"
+#define DM355_VPBE_VENC_SUBDEV_NAME "dm355,vpbe-venc"

/* venc events */
#define VENC_END_OF_FRAME BIT(0)
@@ -28,7 +30,6 @@
#define VENC_SECOND_FIELD BIT(2)

struct venc_platform_data {
- enum vpbe_version venc_type;
int (*setup_pinmux)(enum v4l2_mbus_pixelcode if_type,
int field);
int (*setup_clock)(enum vpbe_enc_timings_type type,
--
1.7.4.1

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