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Message-ID: <9f66671c-9b1e-44e0-a029-acb7f05f7af2@suse.de>
Date: Mon, 6 May 2024 11:22:17 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Easwar Hariharan <eahariha@...ux.microsoft.com>,
Florian Tobias Schandinat <FlorianSchandinat@....de>,
Helge Deller <deller@....de>,
"open list:VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER"
<linux-fbdev@...r.kernel.org>,
"open list:FRAMEBUFFER LAYER" <dri-devel@...ts.freedesktop.org>,
open list <linux-kernel@...r.kernel.org>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
"open list:RADEON and AMDGPU DRM DRIVERS" <amd-gfx@...ts.freedesktop.org>,
"open list:INTEL DRM DISPLAY FOR XE AND I915 DRIVERS"
<intel-gfx@...ts.freedesktop.org>,
"open list:INTEL DRM DISPLAY FOR XE AND I915 DRIVERS"
<intel-xe@...ts.freedesktop.org>,
"open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS"
<nouveau@...ts.freedesktop.org>,
"open list:I2C SUBSYSTEM HOST DRIVERS" <linux-i2c@...r.kernel.org>,
"open list:BTTV VIDEO4LINUX DRIVER" <linux-media@...r.kernel.org>
Subject: Re: [PATCH v2 12/12] fbdev/viafb: Make I2C terminology more inclusive
Am 03.05.24 um 20:13 schrieb Easwar Hariharan:
> I2C v7, SMBus 3.2, and I3C 1.1.1 specifications have replaced "master/slave"
> with more appropriate terms. Inspired by and following on to Wolfram's
> series to fix drivers/i2c/[1], fix the terminology for users of
> I2C_ALGOBIT bitbanging interface, now that the approved verbiage exists
> in the specification.
>
> Compile tested, no functionality changes intended
>
> [1]: https://lore.kernel.org/all/20240322132619.6389-1-wsa+renesas@sang-engineering.com/
>
> Signed-off-by: Easwar Hariharan <eahariha@...ux.microsoft.com>
Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
> ---
> drivers/video/fbdev/via/chip.h | 8 ++++----
> drivers/video/fbdev/via/dvi.c | 24 ++++++++++++------------
> drivers/video/fbdev/via/lcd.c | 6 +++---
> drivers/video/fbdev/via/via_aux.h | 2 +-
> drivers/video/fbdev/via/via_i2c.c | 12 ++++++------
> drivers/video/fbdev/via/vt1636.c | 6 +++---
> 6 files changed, 29 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/video/fbdev/via/chip.h b/drivers/video/fbdev/via/chip.h
> index f0a19cbcb9e5..f81af13630e2 100644
> --- a/drivers/video/fbdev/via/chip.h
> +++ b/drivers/video/fbdev/via/chip.h
> @@ -69,7 +69,7 @@
> #define VT1632_TMDS 0x01
> #define INTEGRATED_TMDS 0x42
>
> -/* Definition TMDS Trasmitter I2C Slave Address */
> +/* Definition TMDS Trasmitter I2C Target Address */
> #define VT1632_TMDS_I2C_ADDR 0x10
>
> /**************************************************/
> @@ -88,21 +88,21 @@
> #define TX_DATA_DDR_MODE 0x04
> #define TX_DATA_SDR_MODE 0x08
>
> -/* Definition LVDS Trasmitter I2C Slave Address */
> +/* Definition LVDS Trasmitter I2C Target Address */
> #define VT1631_LVDS_I2C_ADDR 0x70
> #define VT3271_LVDS_I2C_ADDR 0x80
> #define VT1636_LVDS_I2C_ADDR 0x80
>
> struct tmds_chip_information {
> int tmds_chip_name;
> - int tmds_chip_slave_addr;
> + int tmds_chip_target_addr;
> int output_interface;
> int i2c_port;
> };
>
> struct lvds_chip_information {
> int lvds_chip_name;
> - int lvds_chip_slave_addr;
> + int lvds_chip_target_addr;
> int output_interface;
> int i2c_port;
> };
> diff --git a/drivers/video/fbdev/via/dvi.c b/drivers/video/fbdev/via/dvi.c
> index 13147e3066eb..27990a73bfa3 100644
> --- a/drivers/video/fbdev/via/dvi.c
> +++ b/drivers/video/fbdev/via/dvi.c
> @@ -70,7 +70,7 @@ bool viafb_tmds_trasmitter_identify(void)
> /* Check for VT1632: */
> viaparinfo->chip_info->tmds_chip_info.tmds_chip_name = VT1632_TMDS;
> viaparinfo->chip_info->
> - tmds_chip_info.tmds_chip_slave_addr = VT1632_TMDS_I2C_ADDR;
> + tmds_chip_info.tmds_chip_target_addr = VT1632_TMDS_I2C_ADDR;
> viaparinfo->chip_info->tmds_chip_info.i2c_port = VIA_PORT_31;
> if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID)) {
> /*
> @@ -128,14 +128,14 @@ bool viafb_tmds_trasmitter_identify(void)
> viaparinfo->chip_info->
> tmds_chip_info.tmds_chip_name = NON_TMDS_TRANSMITTER;
> viaparinfo->chip_info->tmds_chip_info.
> - tmds_chip_slave_addr = VT1632_TMDS_I2C_ADDR;
> + tmds_chip_target_addr = VT1632_TMDS_I2C_ADDR;
> return false;
> }
>
> static void tmds_register_write(int index, u8 data)
> {
> viafb_i2c_writebyte(viaparinfo->chip_info->tmds_chip_info.i2c_port,
> - viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr,
> + viaparinfo->chip_info->tmds_chip_info.tmds_chip_target_addr,
> index, data);
> }
>
> @@ -144,7 +144,7 @@ static int tmds_register_read(int index)
> u8 data;
>
> viafb_i2c_readbyte(viaparinfo->chip_info->tmds_chip_info.i2c_port,
> - (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr,
> + (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_target_addr,
> (u8) index, &data);
> return data;
> }
> @@ -152,7 +152,7 @@ static int tmds_register_read(int index)
> static int tmds_register_read_bytes(int index, u8 *buff, int buff_len)
> {
> viafb_i2c_readbytes(viaparinfo->chip_info->tmds_chip_info.i2c_port,
> - (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr,
> + (u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_target_addr,
> (u8) index, buff, buff_len);
> return 0;
> }
> @@ -256,14 +256,14 @@ static int viafb_dvi_query_EDID(void)
>
> DEBUG_MSG(KERN_INFO "viafb_dvi_query_EDID!!\n");
>
> - restore = viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr;
> - viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr = 0xA0;
> + restore = viaparinfo->chip_info->tmds_chip_info.tmds_chip_target_addr;
> + viaparinfo->chip_info->tmds_chip_info.tmds_chip_target_addr = 0xA0;
>
> data0 = (u8) tmds_register_read(0x00);
> data1 = (u8) tmds_register_read(0x01);
> if ((data0 == 0) && (data1 == 0xFF)) {
> viaparinfo->chip_info->
> - tmds_chip_info.tmds_chip_slave_addr = restore;
> + tmds_chip_info.tmds_chip_target_addr = restore;
> return EDID_VERSION_1; /* Found EDID1 Table */
> }
>
> @@ -280,8 +280,8 @@ static void dvi_get_panel_size_from_DDCv1(
>
> DEBUG_MSG(KERN_INFO "\n dvi_get_panel_size_from_DDCv1 \n");
>
> - restore = tmds_chip->tmds_chip_slave_addr;
> - tmds_chip->tmds_chip_slave_addr = 0xA0;
> + restore = tmds_chip->tmds_chip_target_addr;
> + tmds_chip->tmds_chip_target_addr = 0xA0;
> for (i = 0x25; i < 0x6D; i++) {
> switch (i) {
> case 0x36:
> @@ -306,7 +306,7 @@ static void dvi_get_panel_size_from_DDCv1(
>
> DEBUG_MSG(KERN_INFO "DVI max pixelclock = %d\n",
> tmds_setting->max_pixel_clock);
> - tmds_chip->tmds_chip_slave_addr = restore;
> + tmds_chip->tmds_chip_target_addr = restore;
> }
>
> /* If Disable DVI, turn off pad */
> @@ -427,7 +427,7 @@ void viafb_dvi_enable(void)
> viafb_i2c_writebyte(viaparinfo->chip_info->
> tmds_chip_info.i2c_port,
> viaparinfo->chip_info->
> - tmds_chip_info.tmds_chip_slave_addr,
> + tmds_chip_info.tmds_chip_target_addr,
> 0x08, data);
> }
> }
> diff --git a/drivers/video/fbdev/via/lcd.c b/drivers/video/fbdev/via/lcd.c
> index beec5c8d4d08..8673fced8749 100644
> --- a/drivers/video/fbdev/via/lcd.c
> +++ b/drivers/video/fbdev/via/lcd.c
> @@ -147,7 +147,7 @@ bool viafb_lvds_trasmitter_identify(void)
> return true;
> /* Check for VT1631: */
> viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = VT1631_LVDS;
> - viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
> + viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr =
> VT1631_LVDS_I2C_ADDR;
>
> if (check_lvds_chip(VT1631_DEVICE_ID_REG, VT1631_DEVICE_ID)) {
> @@ -161,7 +161,7 @@ bool viafb_lvds_trasmitter_identify(void)
>
> viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
> NON_LVDS_TRANSMITTER;
> - viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
> + viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr =
> VT1631_LVDS_I2C_ADDR;
> return false;
> }
> @@ -327,7 +327,7 @@ static int lvds_register_read(int index)
> u8 data;
>
> viafb_i2c_readbyte(VIA_PORT_2C,
> - (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr,
> + (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr,
> (u8) index, &data);
> return data;
> }
> diff --git a/drivers/video/fbdev/via/via_aux.h b/drivers/video/fbdev/via/via_aux.h
> index 0933bbf20e58..464723fd514c 100644
> --- a/drivers/video/fbdev/via/via_aux.h
> +++ b/drivers/video/fbdev/via/via_aux.h
> @@ -24,7 +24,7 @@ struct via_aux_drv {
> struct list_head chain; /* chain to support multiple drivers */
>
> struct via_aux_bus *bus; /* the I2C bus used */
> - u8 addr; /* the I2C slave address */
> + u8 addr; /* the I2C target address */
>
> const char *name; /* human readable name of the driver */
> void *data; /* private data of this driver */
> diff --git a/drivers/video/fbdev/via/via_i2c.c b/drivers/video/fbdev/via/via_i2c.c
> index 582502810575..5edd3827ca27 100644
> --- a/drivers/video/fbdev/via/via_i2c.c
> +++ b/drivers/video/fbdev/via/via_i2c.c
> @@ -104,7 +104,7 @@ static void via_i2c_setsda(void *data, int state)
> spin_unlock_irqrestore(&i2c_vdev->reg_lock, flags);
> }
>
> -int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata)
> +int viafb_i2c_readbyte(u8 adap, u8 target_addr, u8 index, u8 *pdata)
> {
> int ret;
> u8 mm1[] = {0x00};
> @@ -115,7 +115,7 @@ int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata)
> *pdata = 0;
> msgs[0].flags = 0;
> msgs[1].flags = I2C_M_RD;
> - msgs[0].addr = msgs[1].addr = slave_addr / 2;
> + msgs[0].addr = msgs[1].addr = target_addr / 2;
> mm1[0] = index;
> msgs[0].len = 1; msgs[1].len = 1;
> msgs[0].buf = mm1; msgs[1].buf = pdata;
> @@ -128,7 +128,7 @@ int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata)
> return ret;
> }
>
> -int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data)
> +int viafb_i2c_writebyte(u8 adap, u8 target_addr, u8 index, u8 data)
> {
> int ret;
> u8 msg[2] = { index, data };
> @@ -137,7 +137,7 @@ int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data)
> if (!via_i2c_par[adap].is_active)
> return -ENODEV;
> msgs.flags = 0;
> - msgs.addr = slave_addr / 2;
> + msgs.addr = target_addr / 2;
> msgs.len = 2;
> msgs.buf = msg;
> ret = i2c_transfer(&via_i2c_par[adap].adapter, &msgs, 1);
> @@ -149,7 +149,7 @@ int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data)
> return ret;
> }
>
> -int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len)
> +int viafb_i2c_readbytes(u8 adap, u8 target_addr, u8 index, u8 *buff, int buff_len)
> {
> int ret;
> u8 mm1[] = {0x00};
> @@ -159,7 +159,7 @@ int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len
> return -ENODEV;
> msgs[0].flags = 0;
> msgs[1].flags = I2C_M_RD;
> - msgs[0].addr = msgs[1].addr = slave_addr / 2;
> + msgs[0].addr = msgs[1].addr = target_addr / 2;
> mm1[0] = index;
> msgs[0].len = 1; msgs[1].len = buff_len;
> msgs[0].buf = mm1; msgs[1].buf = buff;
> diff --git a/drivers/video/fbdev/via/vt1636.c b/drivers/video/fbdev/via/vt1636.c
> index 8d8cfdb05618..0d58ca144e19 100644
> --- a/drivers/video/fbdev/via/vt1636.c
> +++ b/drivers/video/fbdev/via/vt1636.c
> @@ -44,7 +44,7 @@ u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
> u8 data;
>
> viafb_i2c_readbyte(plvds_chip_info->i2c_port,
> - plvds_chip_info->lvds_chip_slave_addr, index, &data);
> + plvds_chip_info->lvds_chip_target_addr, index, &data);
> return data;
> }
>
> @@ -60,7 +60,7 @@ void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information
> data = (data & (~io_data.Mask)) | io_data.Data;
>
> viafb_i2c_writebyte(plvds_chip_info->i2c_port,
> - plvds_chip_info->lvds_chip_slave_addr, index, data);
> + plvds_chip_info->lvds_chip_target_addr, index, data);
> }
>
> void viafb_init_lvds_vt1636(struct lvds_setting_information
> @@ -113,7 +113,7 @@ bool viafb_lvds_identify_vt1636(u8 i2c_adapter)
> DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n");
>
> /* Sense VT1636 LVDS Transmiter */
> - viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
> + viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr =
> VT1636_LVDS_I2C_ADDR;
>
> /* Check vendor ID first: */
--
--
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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