Re: [PATCH v4 2/6] drm/gma500: Make I2C terminology more inclusive

From: Thomas Zimmermann
Date: Mon Jul 29 2024 - 03:41:44 EST

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I merged this patch into drm-misc-next.

Am 11.07.24 um 07:27 schrieb Easwar Hariharan:

I2C v7, SMBus 3.2, and I3C 1.1.1 specifications have replaced "master/slave"
with more appropriate terms. Inspired by Wolfram's series to fix drivers/i2c/,
fix the terminology for users of I2C_ALGOBIT bitbanging interface, now that
the approved verbiage exists in the specification.

Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Signed-off-by: Easwar Hariharan <eahariha@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/gma500/cdv_intel_lvds.c | 2 +-
drivers/gpu/drm/gma500/intel_bios.c | 22 ++++++++++-----------
drivers/gpu/drm/gma500/intel_bios.h | 4 ++--
drivers/gpu/drm/gma500/intel_gmbus.c | 2 +-
drivers/gpu/drm/gma500/psb_drv.h | 2 +-
drivers/gpu/drm/gma500/psb_intel_drv.h | 2 +-
drivers/gpu/drm/gma500/psb_intel_lvds.c | 4 ++--
drivers/gpu/drm/gma500/psb_intel_sdvo.c | 26 ++++++++++++-------------
8 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
index f08a6803dc184..c7652a02b42ec 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
@@ -565,7 +565,7 @@ void cdv_intel_lvds_init(struct drm_device *dev,
dev->dev, "I2C bus registration failed.\n");
goto err_encoder_cleanup;
}
- gma_encoder->i2c_bus->slave_addr = 0x2C;
+ gma_encoder->i2c_bus->target_addr = 0x2C;
dev_priv->lvds_i2c_bus = gma_encoder->i2c_bus;
/*
diff --git a/drivers/gpu/drm/gma500/intel_bios.c b/drivers/gpu/drm/gma500/intel_bios.c
index 8245b5603d2c0..d5924ca3ed050 100644
--- a/drivers/gpu/drm/gma500/intel_bios.c
+++ b/drivers/gpu/drm/gma500/intel_bios.c
@@ -14,8 +14,8 @@
#include "psb_intel_drv.h"
#include "psb_intel_reg.h"
-#define SLAVE_ADDR1 0x70
-#define SLAVE_ADDR2 0x72
+#define TARGET_ADDR1 0x70
+#define TARGET_ADDR2 0x72
static void *find_section(struct bdb_header *bdb, int section_id)
{
@@ -357,10 +357,10 @@ parse_sdvo_device_mapping(struct drm_psb_private *dev_priv,
/* skip the device block if device type is invalid */
continue;
}
- if (p_child->slave_addr != SLAVE_ADDR1 &&
- p_child->slave_addr != SLAVE_ADDR2) {
+ if (p_child->target_addr != TARGET_ADDR1 &&
+ p_child->target_addr != TARGET_ADDR2) {
/*
- * If the slave address is neither 0x70 nor 0x72,
+ * If the target address is neither 0x70 nor 0x72,
* it is not a SDVO device. Skip it.
*/
continue;
@@ -371,22 +371,22 @@ parse_sdvo_device_mapping(struct drm_psb_private *dev_priv,
DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
continue;
}
- DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
+ DRM_DEBUG_KMS("the SDVO device with target addr %2x is found on"
" %s port\n",
- p_child->slave_addr,
+ p_child->target_addr,
(p_child->dvo_port == DEVICE_PORT_DVOB) ?
"SDVOB" : "SDVOC");
p_mapping = &(dev_priv->sdvo_mappings[p_child->dvo_port - 1]);
if (!p_mapping->initialized) {
p_mapping->dvo_port = p_child->dvo_port;
- p_mapping->slave_addr = p_child->slave_addr;
+ p_mapping->target_addr = p_child->target_addr;
p_mapping->dvo_wiring = p_child->dvo_wiring;
p_mapping->ddc_pin = p_child->ddc_pin;
p_mapping->i2c_pin = p_child->i2c_pin;
p_mapping->initialized = 1;
DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
p_mapping->dvo_port,
- p_mapping->slave_addr,
+ p_mapping->target_addr,
p_mapping->dvo_wiring,
p_mapping->ddc_pin,
p_mapping->i2c_pin);
@@ -394,10 +394,10 @@ parse_sdvo_device_mapping(struct drm_psb_private *dev_priv,
DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
"two SDVO device.\n");
}
- if (p_child->slave2_addr) {
+ if (p_child->target2_addr) {
/* Maybe this is a SDVO device with multiple inputs */
/* And the mapping info is not added */
- DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
+ DRM_DEBUG_KMS("there exists the target2_addr. Maybe this"
" is a SDVO device with multiple inputs.\n");
}
count++;
diff --git a/drivers/gpu/drm/gma500/intel_bios.h b/drivers/gpu/drm/gma500/intel_bios.h
index 0e6facf21e332..b5adea2a20c38 100644
--- a/drivers/gpu/drm/gma500/intel_bios.h
+++ b/drivers/gpu/drm/gma500/intel_bios.h
@@ -186,13 +186,13 @@ struct child_device_config {
u16 addin_offset;
u8 dvo_port; /* See Device_PORT_* above */
u8 i2c_pin;
- u8 slave_addr;
+ u8 target_addr;
u8 ddc_pin;
u16 edid_ptr;
u8 dvo_cfg; /* See DEVICE_CFG_* above */
u8 dvo2_port;
u8 i2c2_pin;
- u8 slave2_addr;
+ u8 target2_addr;
u8 ddc2_pin;
u8 capabilities;
u8 dvo_wiring;/* See DEVICE_WIRE_* above */
diff --git a/drivers/gpu/drm/gma500/intel_gmbus.c b/drivers/gpu/drm/gma500/intel_gmbus.c
index aa45509859f21..ee8b047587f25 100644
--- a/drivers/gpu/drm/gma500/intel_gmbus.c
+++ b/drivers/gpu/drm/gma500/intel_gmbus.c
@@ -333,7 +333,7 @@ gmbus_xfer(struct i2c_adapter *adapter,
clear_err:
/* Toggle the Software Clear Interrupt bit. This has the effect
* of resetting the GMBUS controller and so clearing the
- * BUS_ERROR raised by the slave's NAK.
+ * BUS_ERROR raised by the target's NAK.
*/
GMBUS_REG_WRITE(GMBUS1 + reg_offset, GMBUS_SW_CLR_INT);
GMBUS_REG_WRITE(GMBUS1 + reg_offset, 0);
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 83c17689c454f..bddf89b82fecc 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -202,7 +202,7 @@ struct psb_intel_opregion {
struct sdvo_device_mapping {
u8 initialized;
u8 dvo_port;
- u8 slave_addr;
+ u8 target_addr;
u8 dvo_wiring;
u8 i2c_pin;
u8 i2c_speed;
diff --git a/drivers/gpu/drm/gma500/psb_intel_drv.h b/drivers/gpu/drm/gma500/psb_intel_drv.h
index c111e933e1ed2..2499fd6a80c9d 100644
--- a/drivers/gpu/drm/gma500/psb_intel_drv.h
+++ b/drivers/gpu/drm/gma500/psb_intel_drv.h
@@ -80,7 +80,7 @@ struct psb_intel_mode_device {
struct gma_i2c_chan {
struct i2c_adapter base;
struct i2c_algo_bit_data algo;
- u8 slave_addr;
+ u8 target_addr;
/* for getting at dev. private (mmio etc.) */
struct drm_device *drm_dev;
diff --git a/drivers/gpu/drm/gma500/psb_intel_lvds.c b/drivers/gpu/drm/gma500/psb_intel_lvds.c
index 8486de230ec91..d1cd9a9403959 100644
--- a/drivers/gpu/drm/gma500/psb_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/psb_intel_lvds.c
@@ -97,7 +97,7 @@ static int psb_lvds_i2c_set_brightness(struct drm_device *dev,
struct i2c_msg msgs[] = {
{
- .addr = lvds_i2c_bus->slave_addr,
+ .addr = lvds_i2c_bus->target_addr,
.flags = 0,
.len = 2,
.buf = out_buf,
@@ -707,7 +707,7 @@ void psb_intel_lvds_init(struct drm_device *dev,
dev->dev, "I2C bus registration failed.\n");
goto err_encoder_cleanup;
}
- lvds_priv->i2c_bus->slave_addr = 0x2C;
+ lvds_priv->i2c_bus->target_addr = 0x2C;
dev_priv->lvds_i2c_bus = lvds_priv->i2c_bus;
/*
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
index e4f914decebae..8dafff963ca8b 100644
--- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
+++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
@@ -70,7 +70,7 @@ struct psb_intel_sdvo {
struct gma_encoder base;
struct i2c_adapter *i2c;
- u8 slave_addr;
+ u8 target_addr;
struct i2c_adapter ddc;
@@ -259,13 +259,13 @@ static bool psb_intel_sdvo_read_byte(struct psb_intel_sdvo *psb_intel_sdvo, u8 a
{
struct i2c_msg msgs[] = {
{
- .addr = psb_intel_sdvo->slave_addr,
+ .addr = psb_intel_sdvo->target_addr,
.flags = 0,
.len = 1,
.buf = &addr,
},
{
- .addr = psb_intel_sdvo->slave_addr,
+ .addr = psb_intel_sdvo->target_addr,
.flags = I2C_M_RD,
.len = 1,
.buf = ch,
@@ -463,14 +463,14 @@ static bool psb_intel_sdvo_write_cmd(struct psb_intel_sdvo *psb_intel_sdvo, u8 c
psb_intel_sdvo_debug_write(psb_intel_sdvo, cmd, args, args_len);
for (i = 0; i < args_len; i++) {
- msgs[i].addr = psb_intel_sdvo->slave_addr;
+ msgs[i].addr = psb_intel_sdvo->target_addr;
msgs[i].flags = 0;
msgs[i].len = 2;
msgs[i].buf = buf + 2 *i;
buf[2*i + 0] = SDVO_I2C_ARG_0 - i;
buf[2*i + 1] = ((u8*)args)[i];
}
- msgs[i].addr = psb_intel_sdvo->slave_addr;
+ msgs[i].addr = psb_intel_sdvo->target_addr;
msgs[i].flags = 0;
msgs[i].len = 2;
msgs[i].buf = buf + 2*i;
@@ -479,12 +479,12 @@ static bool psb_intel_sdvo_write_cmd(struct psb_intel_sdvo *psb_intel_sdvo, u8 c
/* the following two are to read the response */
status = SDVO_I2C_CMD_STATUS;
- msgs[i+1].addr = psb_intel_sdvo->slave_addr;
+ msgs[i+1].addr = psb_intel_sdvo->target_addr;
msgs[i+1].flags = 0;
msgs[i+1].len = 1;
msgs[i+1].buf = &status;
- msgs[i+2].addr = psb_intel_sdvo->slave_addr;
+ msgs[i+2].addr = psb_intel_sdvo->target_addr;
msgs[i+2].flags = I2C_M_RD;
msgs[i+2].len = 1;
msgs[i+2].buf = &status;
@@ -1899,7 +1899,7 @@ psb_intel_sdvo_is_hdmi_connector(struct psb_intel_sdvo *psb_intel_sdvo, int devi
}
static u8
-psb_intel_sdvo_get_slave_addr(struct drm_device *dev, int sdvo_reg)
+psb_intel_sdvo_get_target_addr(struct drm_device *dev, int sdvo_reg)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct sdvo_device_mapping *my_mapping, *other_mapping;
@@ -1913,14 +1913,14 @@ psb_intel_sdvo_get_slave_addr(struct drm_device *dev, int sdvo_reg)
}
/* If the BIOS described our SDVO device, take advantage of it. */
- if (my_mapping->slave_addr)
- return my_mapping->slave_addr;
+ if (my_mapping->target_addr)
+ return my_mapping->target_addr;
/* If the BIOS only described a different SDVO device, use the
* address that it isn't using.
*/
- if (other_mapping->slave_addr) {
- if (other_mapping->slave_addr == 0x70)
+ if (other_mapping->target_addr) {
+ if (other_mapping->target_addr == 0x70)
return 0x72;
else
return 0x70;
@@ -2446,7 +2446,7 @@ bool psb_intel_sdvo_init(struct drm_device *dev, int sdvo_reg)
return false;
psb_intel_sdvo->sdvo_reg = sdvo_reg;
- psb_intel_sdvo->slave_addr = psb_intel_sdvo_get_slave_addr(dev, sdvo_reg) >> 1;
+ psb_intel_sdvo->target_addr = psb_intel_sdvo_get_target_addr(dev, sdvo_reg) >> 1;
psb_intel_sdvo_select_i2c_bus(dev_priv, psb_intel_sdvo, sdvo_reg);
if (!psb_intel_sdvo_init_ddc_proxy(psb_intel_sdvo, dev)) {
kfree(psb_intel_sdvo);

--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

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