diff options
Diffstat (limited to 'resources/libreboot/patch/kgpe-d16/0004-drivers-i2c-w83795-Add-option-to-use-auxiliary-SMBUS.patch')
| -rw-r--r-- | resources/libreboot/patch/kgpe-d16/0004-drivers-i2c-w83795-Add-option-to-use-auxiliary-SMBUS.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/resources/libreboot/patch/kgpe-d16/0004-drivers-i2c-w83795-Add-option-to-use-auxiliary-SMBUS.patch b/resources/libreboot/patch/kgpe-d16/0004-drivers-i2c-w83795-Add-option-to-use-auxiliary-SMBUS.patch new file mode 100644 index 00000000..ccb52ae5 --- /dev/null +++ b/resources/libreboot/patch/kgpe-d16/0004-drivers-i2c-w83795-Add-option-to-use-auxiliary-SMBUS.patch @@ -0,0 +1,68 @@ +From 8996dda2293b74ec84251cc2eefb7722acd6bd6b Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Sat, 17 Oct 2015 04:37:10 -0500 +Subject: [PATCH 004/143] drivers/i2c/w83795: Add option to use auxiliary + SMBUS controller + +Change-Id: I5a9b5eba992853b84b0cb6c3a1764edf42ac49b2 +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/drivers/i2c/w83795/chip.h | 7 +++++++ + src/drivers/i2c/w83795/w83795.c | 17 +++++++++++++++++ + 2 files changed, 24 insertions(+) + +diff --git a/src/drivers/i2c/w83795/chip.h b/src/drivers/i2c/w83795/chip.h +index c8a42ea..9a3f847 100644 +--- a/src/drivers/i2c/w83795/chip.h ++++ b/src/drivers/i2c/w83795/chip.h +@@ -139,4 +139,11 @@ struct drivers_i2c_w83795_config { + uint8_t fan6_duty; /* % of full speed (0-100) */ + uint8_t fan7_duty; /* % of full speed (0-100) */ + uint8_t fan8_duty; /* % of full speed (0-100) */ ++ ++ uint8_t smbus_aux; /* 0 == device located on primary SMBUS, ++ * 1 == device located on first auxiliary ++ * SMBUS channel, ++ * <n> == device located on <n> auxiliary ++ * SMBUS channel ++ */ + }; +diff --git a/src/drivers/i2c/w83795/w83795.c b/src/drivers/i2c/w83795/w83795.c +index 0af272f..0f82e1c 100644 +--- a/src/drivers/i2c/w83795/w83795.c ++++ b/src/drivers/i2c/w83795/w83795.c +@@ -141,7 +141,18 @@ static void w83795_init(struct device *dev, w83795_fan_mode_t mode, u8 dts_src) + uint8_t val; + uint16_t limit_value; + ++#if IS_ENABLED(CONFIG_SMBUS_HAS_AUX_CHANNELS) ++ uint8_t smbus_aux_channel_prev = smbus_current_aux_channel(); ++ smbus_switch_to_aux_channel(config->smbus_aux); ++ printk(BIOS_DEBUG, "Set SMBUS controller to channel %d\n", config->smbus_aux); ++#endif ++ + if (smbus_read_byte(dev, 0x00) < 0) { ++#if IS_ENABLED(CONFIG_SMBUS_HAS_AUX_CHANNELS) ++ /* Restore SMBUS channel setting */ ++ smbus_switch_to_aux_channel(smbus_aux_channel_prev); ++ printk(BIOS_DEBUG, "Set SMBUS controller to channel %d\n", smbus_aux_channel_prev); ++#endif + printk(BIOS_ERR, "W83795G/ADG Nuvoton H/W Monitor not found\n"); + return; + } +@@ -332,6 +343,12 @@ static void w83795_init(struct device *dev, w83795_fan_mode_t mode, u8 dts_src) + val = w83795_read(dev, W83795_REG_CONFIG); + val |= W83795_REG_CONFIG_START; + w83795_write(dev, W83795_REG_CONFIG, val); ++ ++#if IS_ENABLED(CONFIG_SMBUS_HAS_AUX_CHANNELS) ++ /* Restore SMBUS channel setting */ ++ smbus_switch_to_aux_channel(smbus_aux_channel_prev); ++ printk(BIOS_DEBUG, "Set SMBUS controller to channel %d\n", smbus_aux_channel_prev); ++#endif + } + + static void w83795_hwm_init(struct device *dev) +-- +1.7.9.5 + |