#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include <drm/drm_edid.h>
+ #include <drm/drm_of.h>
#include <drm/i2c/tda998x.h>
#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
struct tda998x_priv {
struct i2c_client *cec;
struct i2c_client *hdmi;
+ struct mutex mutex;
+ struct delayed_work dwork;
uint16_t rev;
uint8_t current_page;
int dpms;
};
int ret = i2c_master_send(client, buf, sizeof(buf));
if (ret < 0) {
- dev_err(&client->dev, "setpage %04x err %d\n",
+ dev_err(&client->dev, "%s %04x err %d\n", __func__,
reg, ret);
return ret;
}
uint8_t addr = REG2ADDR(reg);
int ret;
+ mutex_lock(&priv->mutex);
ret = set_page(priv, reg);
if (ret < 0)
- return ret;
+ goto out;
ret = i2c_master_send(client, &addr, sizeof(addr));
if (ret < 0)
if (ret < 0)
goto fail;
- return ret;
+ goto out;
fail:
dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg);
+out:
+ mutex_unlock(&priv->mutex);
return ret;
}
buf[0] = REG2ADDR(reg);
memcpy(&buf[1], p, cnt);
+ mutex_lock(&priv->mutex);
ret = set_page(priv, reg);
if (ret < 0)
- return;
+ goto out;
ret = i2c_master_send(client, buf, cnt + 1);
if (ret < 0)
dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
+out:
+ mutex_unlock(&priv->mutex);
}
static int
uint8_t buf[] = {REG2ADDR(reg), val};
int ret;
+ mutex_lock(&priv->mutex);
ret = set_page(priv, reg);
if (ret < 0)
- return;
+ goto out;
ret = i2c_master_send(client, buf, sizeof(buf));
if (ret < 0)
dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
+out:
+ mutex_unlock(&priv->mutex);
}
static void
uint8_t buf[] = {REG2ADDR(reg), val >> 8, val};
int ret;
+ mutex_lock(&priv->mutex);
ret = set_page(priv, reg);
if (ret < 0)
- return;
+ goto out;
ret = i2c_master_send(client, buf, sizeof(buf));
if (ret < 0)
dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
+out:
+ mutex_unlock(&priv->mutex);
}
static void
reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
}
+/* handle HDMI connect/disconnect */
+static void tda998x_hpd(struct work_struct *work)
+{
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct tda998x_priv *priv =
+ container_of(dwork, struct tda998x_priv, dwork);
+
+ if (priv->encoder && priv->encoder->dev)
+ drm_kms_helper_hotplug_event(priv->encoder->dev);
+}
+
/*
* only 2 interrupts may occur: screen plug/unplug and EDID read
*/
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);
+ schedule_delayed_work(&priv->dwork, HZ/10);
}
return IRQ_HANDLED;
}
connector_status_disconnected;
}
- static int read_edid_block(struct tda998x_priv *priv, uint8_t *buf, int blk)
+ static int read_edid_block(void *data, u8 *buf, unsigned int blk, size_t length)
{
+ struct tda998x_priv *priv = data;
uint8_t offset, segptr;
int ret, i;
return -ETIMEDOUT;
}
- ret = reg_read_range(priv, REG_EDID_DATA_0, buf, EDID_LENGTH);
- if (ret != EDID_LENGTH) {
+ ret = reg_read_range(priv, REG_EDID_DATA_0, buf, length);
+ if (ret != length) {
dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n",
blk, ret);
return ret;
return 0;
}
- static uint8_t *do_get_edid(struct tda998x_priv *priv)
+ static int
+ tda998x_encoder_get_modes(struct tda998x_priv *priv,
+ struct drm_connector *connector)
{
- int j, valid_extensions = 0;
- uint8_t *block, *new;
- bool print_bad_edid = drm_debug & DRM_UT_KMS;
-
- if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
- return NULL;
+ struct edid *edid;
+ int n;
if (priv->rev == TDA19988)
reg_clear(priv, REG_TX4, TX4_PD_RAM);
- /* base block fetch */
- if (read_edid_block(priv, block, 0))
- goto fail;
-
- if (!drm_edid_block_valid(block, 0, print_bad_edid))
- goto fail;
-
- /* if there's no extensions, we're done */
- if (block[0x7e] == 0)
- goto done;
-
- new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL);
- if (!new)
- goto fail;
- block = new;
-
- for (j = 1; j <= block[0x7e]; j++) {
- uint8_t *ext_block = block + (valid_extensions + 1) * EDID_LENGTH;
- if (read_edid_block(priv, ext_block, j))
- goto fail;
-
- if (!drm_edid_block_valid(ext_block, j, print_bad_edid))
- goto fail;
-
- valid_extensions++;
- }
-
- if (valid_extensions != block[0x7e]) {
- block[EDID_LENGTH-1] += block[0x7e] - valid_extensions;
- block[0x7e] = valid_extensions;
- new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);
- if (!new)
- goto fail;
- block = new;
- }
+ edid = drm_do_get_edid(connector, read_edid_block, priv);
- done:
if (priv->rev == TDA19988)
reg_set(priv, REG_TX4, TX4_PD_RAM);
- return block;
-
- fail:
- if (priv->rev == TDA19988)
- reg_set(priv, REG_TX4, TX4_PD_RAM);
- dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
- kfree(block);
- return NULL;
- }
-
- static int
- tda998x_encoder_get_modes(struct tda998x_priv *priv,
- struct drm_connector *connector)
- {
- struct edid *edid = (struct edid *)do_get_edid(priv);
- int n = 0;
-
- if (edid) {
- drm_mode_connector_update_edid_property(connector, edid);
- n = drm_add_edid_modes(connector, edid);
- priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
- kfree(edid);
+ if (!edid) {
+ dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
+ return 0;
}
+ drm_mode_connector_update_edid_property(connector, edid);
+ n = drm_add_edid_modes(connector, edid);
+ priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
+ kfree(edid);
+
return n;
}
/* 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)
+ if (priv->hdmi->irq) {
free_irq(priv->hdmi->irq, priv);
+ cancel_delayed_work_sync(&priv->dwork);
+ }
i2c_unregister_device(priv->cec);
}
struct device_node *np = client->dev.of_node;
u32 video;
int rev_lo, rev_hi, ret;
+ unsigned short cec_addr;
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->current_page = 0xff;
priv->hdmi = client;
- priv->cec = i2c_new_dummy(client->adapter, 0x34);
+ /* CEC I2C address bound to TDA998x I2C addr by configuration pins */
+ cec_addr = 0x34 + (client->addr & 0x03);
+ priv->cec = i2c_new_dummy(client->adapter, cec_addr);
if (!priv->cec)
return -ENODEV;
priv->dpms = DRM_MODE_DPMS_OFF;
+ mutex_init(&priv->mutex); /* protect the page access */
+
/* wake up the device: */
cec_write(priv, REG_CEC_ENAMODS,
CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
if (client->irq) {
int irqf_trigger;
- /* init read EDID waitqueue */
+ /* init read EDID waitqueue and HDP work */
init_waitqueue_head(&priv->wq_edid);
+ INIT_DELAYED_WORK(&priv->dwork, tda998x_hpd);
/* clear pending interrupts */
reg_read(priv, REG_INT_FLAGS_0);
struct i2c_client *client = to_i2c_client(dev);
struct drm_device *drm = data;
struct tda998x_priv2 *priv;
+ uint32_t crtcs = 0;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
dev_set_drvdata(dev, priv);
+ if (dev->of_node)
+ crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
+
+ /* If no CRTCs were found, fall back to our old behaviour */
+ if (crtcs == 0) {
+ dev_warn(dev, "Falling back to first CRTC\n");
+ crtcs = 1 << 0;
+ }
+
priv->base.encoder = &priv->encoder;
priv->connector.interlace_allowed = 1;
- priv->encoder.possible_crtcs = 1 << 0;
+ priv->encoder.possible_crtcs = crtcs;
ret = tda998x_create(client, &priv->base);
if (ret)
projects / cascardo / linux.git / commitdiff