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Subject[PATCH v2 1/2] drm: bridge: adv7511: enable CEC support for ADV7535
Date
From: Alvin Šipraga <alsi@bang-olufsen.dk>

Like the ADV7533, the ADV7535 has an offset for the CEC register map,
and it is the same value (ADV7533_REG_CEC_OFFSET = 0x70).

Rather than testing for numerous chip types in the offset calculations
throughout the driver, just compute it during driver probe and put it in
the private adv7511 data structure.

Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
---
drivers/gpu/drm/bridge/adv7511/adv7511.h | 1 +
drivers/gpu/drm/bridge/adv7511/adv7511_cec.c | 18 ++++++------------
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 5 +++--
3 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h
index 6a882891d91c..da6d8ee2cd84 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511.h
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h
@@ -335,6 +335,7 @@ struct adv7511 {

struct regmap *regmap;
struct regmap *regmap_cec;
+ unsigned int reg_cec_offset;
enum drm_connector_status status;
bool powered;

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
index 28d9becc939c..1f619389e201 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c
@@ -21,8 +21,7 @@

static void adv_cec_tx_raw_status(struct adv7511 *adv7511, u8 tx_raw_status)
{
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;
unsigned int val;

if (regmap_read(adv7511->regmap_cec,
@@ -73,8 +72,7 @@ static void adv_cec_tx_raw_status(struct adv7511 *adv7511, u8 tx_raw_status)

void adv7511_cec_irq_process(struct adv7511 *adv7511, unsigned int irq1)
{
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;
const u32 irq_tx_mask = ADV7511_INT1_CEC_TX_READY |
ADV7511_INT1_CEC_TX_ARBIT_LOST |
ADV7511_INT1_CEC_TX_RETRY_TIMEOUT;
@@ -118,8 +116,7 @@ void adv7511_cec_irq_process(struct adv7511 *adv7511, unsigned int irq1)
static int adv7511_cec_adap_enable(struct cec_adapter *adap, bool enable)
{
struct adv7511 *adv7511 = cec_get_drvdata(adap);
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;

if (adv7511->i2c_cec == NULL)
return -EIO;
@@ -165,8 +162,7 @@ static int adv7511_cec_adap_enable(struct cec_adapter *adap, bool enable)
static int adv7511_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
{
struct adv7511 *adv7511 = cec_get_drvdata(adap);
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;
unsigned int i, free_idx = ADV7511_MAX_ADDRS;

if (!adv7511->cec_enabled_adap)
@@ -235,8 +231,7 @@ static int adv7511_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg)
{
struct adv7511 *adv7511 = cec_get_drvdata(adap);
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;
u8 len = msg->len;
unsigned int i;

@@ -289,8 +284,7 @@ static int adv7511_cec_parse_dt(struct device *dev, struct adv7511 *adv7511)

int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
{
- unsigned int offset = adv7511->type == ADV7533 ?
- ADV7533_REG_CEC_OFFSET : 0;
+ unsigned int offset = adv7511->reg_cec_offset;
int ret = adv7511_cec_parse_dt(dev, adv7511);

if (ret)
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index b3f10c54e064..556ba1b447ba 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -1027,8 +1027,7 @@ static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
struct i2c_client *i2c = to_i2c_client(dev);
struct adv7511 *adv7511 = i2c_get_clientdata(i2c);

- if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
- reg -= ADV7533_REG_CEC_OFFSET;
+ reg -= adv7511->reg_cec_offset;

switch (reg) {
case ADV7511_REG_CEC_RX_FRAME_HDR:
@@ -1073,6 +1072,8 @@ static int adv7511_init_cec_regmap(struct adv7511 *adv)
ret = adv7533_patch_cec_registers(adv);
if (ret)
goto err;
+
+ adv->reg_cec_offset = ADV7533_REG_CEC_OFFSET;
}

return 0;
--
2.35.1
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