[PATCH RFC 1/5] drm/i2c: tda998x: Move tda998x to a couple encoder/connector
From: Jean-Francois Moine
Date: Mon Mar 17 2014 - 05:55:35 EST
The 'slave encoder' structure of the tda998x driver asks for glue
between the DRM driver and the encoder/connector structures.
This patch changes the driver to a normal DRM encoder/connector
thanks to the infrastructure for componentised subsystems.
Signed-off-by: Jean-Francois Moine <moinejf@xxxxxxx>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 335 ++++++++++++++++++++------------------
1 file changed, 180 insertions(+), 155 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 48af5ca..1b5bbc5 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -20,11 +20,12 @@
#include <linux/hdmi.h>
#include <linux/module.h>
#include <linux/irq.h>
+#include <linux/of_platform.h>
+#include <linux/component.h>
#include <sound/asoundef.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
-#include <drm/drm_encoder_slave.h>
#include <drm/drm_edid.h>
#include <drm/i2c/tda998x.h>
@@ -44,10 +45,14 @@ struct tda998x_priv {
wait_queue_head_t wq_edid;
volatile int wq_edid_wait;
- struct drm_encoder *encoder;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
};
-#define to_tda998x_priv(x) ((struct tda998x_priv *)to_encoder_slave(x)->slave_priv)
+#define connector_priv(e) \
+ container_of(connector, struct tda998x_priv, connector)
+#define encoder_priv(e) \
+ container_of(encoder, struct tda998x_priv, encoder)
/* The TDA9988 series of devices use a paged register scheme.. to simplify
* things we encode the page # in upper bits of the register #. To read/
@@ -559,9 +564,8 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data)
if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) {
priv->wq_edid_wait = 0;
wake_up(&priv->wq_edid);
- } else if (cec != 0) { /* HPD change */
- if (priv->encoder && priv->encoder->dev)
- drm_helper_hpd_irq_event(priv->encoder->dev);
+ } else if (cec != 0&& priv->encoder.dev) { /* HPD change */
+ drm_helper_hpd_irq_event(priv->encoder.dev);
}
return IRQ_HANDLED;
}
@@ -731,31 +735,9 @@ tda998x_configure_audio(struct tda998x_priv *priv,
/* DRM encoder functions */
static void
-tda998x_encoder_set_config(struct drm_encoder *encoder, void *params)
-{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
- struct tda998x_encoder_params *p = params;
-
- priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) |
- (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) |
- VIP_CNTRL_0_SWAP_B(p->swap_b) |
- (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0);
- priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) |
- (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) |
- VIP_CNTRL_1_SWAP_D(p->swap_d) |
- (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0);
- priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) |
- (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) |
- VIP_CNTRL_2_SWAP_F(p->swap_f) |
- (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
-
- priv->params = *p;
-}
-
-static void
tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
+ struct tda998x_priv *priv = encoder_priv(encoder);
/* we only care about on or off: */
if (mode != DRM_MODE_DPMS_ON)
@@ -786,18 +768,6 @@ tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
priv->dpms = mode;
}
-static void
-tda998x_encoder_save(struct drm_encoder *encoder)
-{
- DBG("");
-}
-
-static void
-tda998x_encoder_restore(struct drm_encoder *encoder)
-{
- DBG("");
-}
-
static bool
tda998x_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
@@ -806,11 +776,14 @@ tda998x_encoder_mode_fixup(struct drm_encoder *encoder,
return true;
}
-static int
-tda998x_encoder_mode_valid(struct drm_encoder *encoder,
- struct drm_display_mode *mode)
+static void tda998x_encoder_prepare(struct drm_encoder *encoder)
{
- return MODE_OK;
+ tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
+}
+
+static void tda998x_encoder_commit(struct drm_encoder *encoder)
+{
+ tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
}
static void
@@ -818,7 +791,7 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
+ struct tda998x_priv *priv = encoder_priv(encoder);
uint16_t ref_pix, ref_line, n_pix, n_line;
uint16_t hs_pix_s, hs_pix_e;
uint16_t vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
@@ -1006,10 +979,9 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,
}
static enum drm_connector_status
-tda998x_encoder_detect(struct drm_encoder *encoder,
- struct drm_connector *connector)
+tda998x_connector_detect(struct drm_connector *connector, bool force)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
+ struct tda998x_priv *priv = connector_priv(connector);
uint8_t val = cec_read(priv, REG_CEC_RXSHPDLEV);
return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected :
@@ -1017,9 +989,8 @@ tda998x_encoder_detect(struct drm_encoder *encoder,
}
static int
-read_edid_block(struct drm_encoder *encoder, uint8_t *buf, int blk)
+read_edid_block(struct tda998x_priv *priv, uint8_t *buf, int blk)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
uint8_t offset, segptr;
int ret, i;
@@ -1073,10 +1044,8 @@ read_edid_block(struct drm_encoder *encoder, uint8_t *buf, int blk)
return 0;
}
-static uint8_t *
-do_get_edid(struct drm_encoder *encoder)
+static uint8_t *do_get_edid(struct tda998x_priv *priv)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
int j, valid_extensions = 0;
uint8_t *block, *new;
bool print_bad_edid = drm_debug & DRM_UT_KMS;
@@ -1088,7 +1057,7 @@ do_get_edid(struct drm_encoder *encoder)
reg_clear(priv, REG_TX4, TX4_PD_RAM);
/* base block fetch */
- if (read_edid_block(encoder, block, 0))
+ if (read_edid_block(priv, block, 0))
goto fail;
if (!drm_edid_block_valid(block, 0, print_bad_edid))
@@ -1105,7 +1074,7 @@ do_get_edid(struct drm_encoder *encoder)
for (j = 1; j <= block[0x7e]; j++) {
uint8_t *ext_block = block + (valid_extensions + 1) * EDID_LENGTH;
- if (read_edid_block(encoder, ext_block, j))
+ if (read_edid_block(priv, ext_block, j))
goto fail;
if (!drm_edid_block_valid(ext_block, j, print_bad_edid))
@@ -1137,12 +1106,28 @@ fail:
return NULL;
}
+/* DRM connector functions */
+
+static struct drm_encoder *
+tda998x_connector_best_encoder(struct drm_connector *connector)
+{
+ struct tda998x_priv *priv = connector_priv(connector);
+
+ return &priv->encoder;
+}
+
static int
-tda998x_encoder_get_modes(struct drm_encoder *encoder,
- struct drm_connector *connector)
+tda998x_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static int
+tda998x_connector_get_modes(struct drm_connector *connector)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
- struct edid *edid = (struct edid *)do_get_edid(encoder);
+ struct tda998x_priv *priv = connector_priv(connector);
+ struct edid *edid = (struct edid *) do_get_edid(priv);
int n = 0;
if (edid) {
@@ -1156,22 +1141,7 @@ tda998x_encoder_get_modes(struct drm_encoder *encoder,
}
static int
-tda998x_encoder_create_resources(struct drm_encoder *encoder,
- struct drm_connector *connector)
-{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
-
- if (priv->hdmi->irq)
- connector->polled = DRM_CONNECTOR_POLL_HPD;
- else
- connector->polled = DRM_CONNECTOR_POLL_CONNECT |
- DRM_CONNECTOR_POLL_DISCONNECT;
- return 0;
-}
-
-static int
-tda998x_encoder_set_property(struct drm_encoder *encoder,
- struct drm_connector *connector,
+tda998x_connector_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t val)
{
@@ -1179,56 +1149,117 @@ tda998x_encoder_set_property(struct drm_encoder *encoder,
return 0;
}
-static void
-tda998x_encoder_destroy(struct drm_encoder *encoder)
+static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
+ .dpms = tda998x_encoder_dpms,
+ .mode_fixup = tda998x_encoder_mode_fixup,
+ .prepare = tda998x_encoder_prepare,
+ .commit = tda998x_encoder_commit,
+ .mode_set = tda998x_encoder_mode_set,
+};
+
+static void tda998x_encoder_destroy(struct drm_encoder *encoder)
{
- struct tda998x_priv *priv = to_tda998x_priv(encoder);
- drm_i2c_encoder_destroy(encoder);
+ drm_encoder_cleanup(encoder);
+}
- /* disable all IRQs and free the IRQ handler */
- cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
- reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
- if (priv->hdmi->irq)
- free_irq(priv->hdmi->irq, priv);
+static const struct drm_encoder_funcs encoder_funcs = {
+ .destroy = tda998x_encoder_destroy,
+};
- if (priv->cec)
- i2c_unregister_device(priv->cec);
- kfree(priv);
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+ .get_modes = tda998x_connector_get_modes,
+ .mode_valid = tda998x_connector_mode_valid,
+ .best_encoder = tda998x_connector_best_encoder,
+};
+
+static void tda998x_connector_destroy(struct drm_connector *connector)
+{
+ if (!connector->dev)
+ return;
+ drm_sysfs_connector_remove(connector);
+ drm_connector_cleanup(connector);
}
-static struct drm_encoder_slave_funcs tda998x_encoder_funcs = {
- .set_config = tda998x_encoder_set_config,
- .destroy = tda998x_encoder_destroy,
- .dpms = tda998x_encoder_dpms,
- .save = tda998x_encoder_save,
- .restore = tda998x_encoder_restore,
- .mode_fixup = tda998x_encoder_mode_fixup,
- .mode_valid = tda998x_encoder_mode_valid,
- .mode_set = tda998x_encoder_mode_set,
- .detect = tda998x_encoder_detect,
- .get_modes = tda998x_encoder_get_modes,
- .create_resources = tda998x_encoder_create_resources,
- .set_property = tda998x_encoder_set_property,
+static const struct drm_connector_funcs connector_funcs = {
+ .detect = tda998x_connector_detect,
+ .set_property = tda998x_connector_set_property,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .dpms = drm_helper_connector_dpms,
+ .destroy = tda998x_connector_destroy,
};
/* I2C driver functions */
-static int
-tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int tda_bind(struct device *dev, struct device *master, void *data)
{
+ struct drm_device *drm = data;
+ struct i2c_client *i2c_client = to_i2c_client(dev);
+ struct tda998x_priv *priv = i2c_get_clientdata(i2c_client);
+ struct drm_connector *connector = &priv->connector;
+ struct drm_encoder *encoder = &priv->encoder;
+ int ret;
+
+ if (!try_module_get(THIS_MODULE)) {
+ dev_err(dev, "cannot get module %s\n", THIS_MODULE->name);
+ return -EINVAL;
+ }
+
+ ret = drm_connector_init(drm, connector,
+ &connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA);
+ if (ret < 0)
+ return ret;
+ drm_connector_helper_add(connector, &connector_helper_funcs);
+
+ ret = drm_encoder_init(drm, encoder,
+ &encoder_funcs,
+ DRM_MODE_ENCODER_TMDS);
+
+ encoder->possible_crtcs = 1; // 1 << lcd_num
+
+ if (ret < 0)
+ goto err;
+ drm_encoder_helper_add(encoder, &encoder_helper_funcs);
+
+ ret = drm_mode_connector_attach_encoder(connector, encoder);
+ if (ret < 0)
+ goto err;
+ connector->encoder = encoder;
+
+ drm_sysfs_connector_add(connector);
+
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ ret = drm_object_property_set_value(&connector->base,
+ drm->mode_config.dpms_property,
+ DRM_MODE_DPMS_OFF);
+
+ if (priv->hdmi->irq)
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ else
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
return 0;
+
+err:
+ if (encoder->dev)
+ drm_encoder_cleanup(encoder);
+ if (connector->dev)
+ drm_connector_cleanup(connector);
+ return ret;
}
-static int
-tda998x_remove(struct i2c_client *client)
+static void tda_unbind(struct device *dev, struct device *master, void *data)
{
- return 0;
+ module_put(THIS_MODULE);
}
+static const struct component_ops comp_ops = {
+ .bind = tda_bind,
+ .unbind = tda_unbind,
+};
+
static int
-tda998x_encoder_init(struct i2c_client *client,
- struct drm_device *dev,
- struct drm_encoder_slave *encoder_slave)
+tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct tda998x_priv *priv;
struct device_node *np = client->dev.of_node;
@@ -1239,6 +1270,8 @@ tda998x_encoder_init(struct i2c_client *client,
if (!priv)
return -ENOMEM;
+ i2c_set_clientdata(client, priv);
+
priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
@@ -1250,13 +1283,8 @@ tda998x_encoder_init(struct i2c_client *client,
kfree(priv);
return -ENODEV;
}
-
- priv->encoder = &encoder_slave->base;
priv->dpms = DRM_MODE_DPMS_OFF;
- encoder_slave->slave_priv = priv;
- encoder_slave->slave_funcs = &tda998x_encoder_funcs;
-
/* wake up the device: */
cec_write(priv, REG_CEC_ENAMODS,
CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
@@ -1340,31 +1368,48 @@ tda998x_encoder_init(struct i2c_client *client,
/* enable EDID read irq: */
reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
- if (!np)
- return 0; /* non-DT */
+ if (np) { /* if DT */
- /* get the optional video properties */
- ret = of_property_read_u32(np, "video-ports", &video);
- if (ret == 0) {
- priv->vip_cntrl_0 = video >> 16;
- priv->vip_cntrl_1 = video >> 8;
- priv->vip_cntrl_2 = video;
+ /* get the optional video properties */
+ ret = of_property_read_u32(np, "video-ports", &video);
+ if (ret == 0) {
+ priv->vip_cntrl_0 = video >> 16;
+ priv->vip_cntrl_1 = video >> 8;
+ priv->vip_cntrl_2 = video;
+ }
}
+ /* tda998x video component ready */
+ component_add(&client->dev, &comp_ops);
+
return 0;
fail:
- /* if encoder_init fails, the encoder slave is never registered,
- * so cleanup here:
- */
if (priv->cec)
i2c_unregister_device(priv->cec);
kfree(priv);
- encoder_slave->slave_priv = NULL;
- encoder_slave->slave_funcs = NULL;
return -ENXIO;
}
+static int
+tda998x_remove(struct i2c_client *client)
+{
+ struct tda998x_priv *priv = i2c_get_clientdata(client);
+
+ /* disable all IRQs and free the IRQ handler */
+ cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
+ reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
+ if (priv->hdmi->irq)
+ free_irq(priv->hdmi->irq, priv);
+
+ component_del(&client->dev, &comp_ops);
+
+ if (priv->cec)
+ i2c_unregister_device(priv->cec);
+ kfree(priv);
+ return 0;
+}
+
#ifdef CONFIG_OF
static const struct of_device_id tda998x_dt_ids[] = {
{ .compatible = "nxp,tda998x", },
@@ -1379,38 +1424,18 @@ static struct i2c_device_id tda998x_ids[] = {
};
MODULE_DEVICE_TABLE(i2c, tda998x_ids);
-static struct drm_i2c_encoder_driver tda998x_driver = {
- .i2c_driver = {
- .probe = tda998x_probe,
- .remove = tda998x_remove,
- .driver = {
- .name = "tda998x",
- .of_match_table = of_match_ptr(tda998x_dt_ids),
- },
- .id_table = tda998x_ids,
+static struct i2c_driver tda998x_driver = {
+ .probe = tda998x_probe,
+ .remove = tda998x_remove,
+ .driver = {
+ .name = "tda998x",
+ .of_match_table = of_match_ptr(tda998x_dt_ids),
},
- .encoder_init = tda998x_encoder_init,
+ .id_table = tda998x_ids,
};
-/* Module initialization */
-
-static int __init
-tda998x_init(void)
-{
- DBG("");
- return drm_i2c_encoder_register(THIS_MODULE, &tda998x_driver);
-}
-
-static void __exit
-tda998x_exit(void)
-{
- DBG("");
- drm_i2c_encoder_unregister(&tda998x_driver);
-}
+module_i2c_driver(tda998x_driver);
MODULE_AUTHOR("Rob Clark <robdclark@xxxxxxxxx");
MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder");
MODULE_LICENSE("GPL");
-
-module_init(tda998x_init);
-module_exit(tda998x_exit);
--
1.9.0
--
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