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Date: Wed, 19 Jun 2024 09:58:44 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Sky Huang <SkyLake.Huang@...iatek.com>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Daniel Golle <daniel@...rotopia.org>,
Qingfang Deng <dqfext@...il.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org,
Steven Liu <Steven.Liu@...iatek.com>
Subject: Re: [PATCH net-next v7 2/5] net: phy: mediatek: Move LED and
read/write page helper functions into mtk phy lib
On Thu, Jun 13, 2024 at 06:40:20PM +0800, Sky Huang wrote:
> @@ -342,7 +295,8 @@ static int cal_cycle(struct phy_device *phydev, int devad,
> ret = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
> MTK_PHY_RG_AD_CAL_CLK, reg_val,
> reg_val & MTK_PHY_DA_CAL_CLK, 500,
> - ANALOG_INTERNAL_OPERATION_MAX_US, false);
> + ANALOG_INTERNAL_OPERATION_MAX_US,
> + false);
Again, this patch is moving code around. There should be no extraneous
changes in such a patch - it should just move code around, fixing stuff
up for the code move. Any other change (such as reformatting) should be
done as a separate patch.
> if (ret) {
> phydev_err(phydev, "Calibration cycle timeout\n");
> return ret;
> @@ -351,7 +305,7 @@ static int cal_cycle(struct phy_device *phydev, int devad,
> phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CALIN,
> MTK_PHY_DA_CALIN_FLAG);
> ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CAL_COMP) >>
> - MTK_PHY_AD_CAL_COMP_OUT_SHIFT;
> + MTK_PHY_AD_CAL_COMP_OUT_SHIFT;
I don't see a reason for this change, and it goes against established
coding style.
> phydev_dbg(phydev, "cal_val: 0x%x, ret: %d\n", cal_val, ret);
>
> return ret;
> @@ -440,38 +394,46 @@ static int tx_amp_fill_result(struct phy_device *phydev, u16 *buf)
> }
>
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG,
> - MTK_PHY_DA_TX_I2MPB_A_GBE_MASK, (buf[0] + bias[0]) << 10);
> + MTK_PHY_DA_TX_I2MPB_A_GBE_MASK,
> + (buf[0] + bias[0]) << 10);
Likewise, this is an extraneous change to the primary purpose of this
patch which is to reorganise code to a new file.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG,
> MTK_PHY_DA_TX_I2MPB_A_TBT_MASK, buf[0] + bias[1]);
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_A2,
> - MTK_PHY_DA_TX_I2MPB_A_HBT_MASK, (buf[0] + bias[2]) << 10);
> + MTK_PHY_DA_TX_I2MPB_A_HBT_MASK,
> + (buf[0] + bias[2]) << 10);
Same again.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_A2,
> MTK_PHY_DA_TX_I2MPB_A_TST_MASK, buf[0] + bias[3]);
>
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B1,
> - MTK_PHY_DA_TX_I2MPB_B_GBE_MASK, (buf[1] + bias[4]) << 8);
> + MTK_PHY_DA_TX_I2MPB_B_GBE_MASK,
> + (buf[1] + bias[4]) << 8);
And here.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B1,
> MTK_PHY_DA_TX_I2MPB_B_TBT_MASK, buf[1] + bias[5]);
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B2,
> - MTK_PHY_DA_TX_I2MPB_B_HBT_MASK, (buf[1] + bias[6]) << 8);
> + MTK_PHY_DA_TX_I2MPB_B_HBT_MASK,
> + (buf[1] + bias[6]) << 8);
And here.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B2,
> MTK_PHY_DA_TX_I2MPB_B_TST_MASK, buf[1] + bias[7]);
>
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C1,
> - MTK_PHY_DA_TX_I2MPB_C_GBE_MASK, (buf[2] + bias[8]) << 8);
> + MTK_PHY_DA_TX_I2MPB_C_GBE_MASK,
> + (buf[2] + bias[8]) << 8);
Ditto.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C1,
> MTK_PHY_DA_TX_I2MPB_C_TBT_MASK, buf[2] + bias[9]);
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C2,
> - MTK_PHY_DA_TX_I2MPB_C_HBT_MASK, (buf[2] + bias[10]) << 8);
> + MTK_PHY_DA_TX_I2MPB_C_HBT_MASK,
> + (buf[2] + bias[10]) << 8);
Ditto.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C2,
> MTK_PHY_DA_TX_I2MPB_C_TST_MASK, buf[2] + bias[11]);
>
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D1,
> - MTK_PHY_DA_TX_I2MPB_D_GBE_MASK, (buf[3] + bias[12]) << 8);
> + MTK_PHY_DA_TX_I2MPB_D_GBE_MASK,
> + (buf[3] + bias[12]) << 8);
Ditto.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D1,
> MTK_PHY_DA_TX_I2MPB_D_TBT_MASK, buf[3] + bias[13]);
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D2,
> - MTK_PHY_DA_TX_I2MPB_D_HBT_MASK, (buf[3] + bias[14]) << 8);
> + MTK_PHY_DA_TX_I2MPB_D_HBT_MASK,
> + (buf[3] + bias[14]) << 8);
Ditto.
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D2,
> MTK_PHY_DA_TX_I2MPB_D_TST_MASK, buf[3] + bias[15]);
>
> @@ -662,7 +624,8 @@ static int tx_vcm_cal_sw(struct phy_device *phydev, u8 rg_txreserve_x)
> goto restore;
>
> /* We calibrate TX-VCM in different logic. Check upper index and then
> - * lower index. If this calibration is valid, apply lower index's result.
> + * lower index. If this calibration is valid, apply lower index's
> + * result.
Ditto.
> */
> ret = upper_ret - lower_ret;
> if (ret == 1) {
> @@ -691,7 +654,8 @@ static int tx_vcm_cal_sw(struct phy_device *phydev, u8 rg_txreserve_x)
> } else if (upper_idx == TXRESERVE_MAX && upper_ret == 0 &&
> lower_ret == 0) {
> ret = 0;
> - phydev_warn(phydev, "TX-VCM SW cal result at high margin 0x%x\n",
> + phydev_warn(phydev,
> + "TX-VCM SW cal result at high margin 0x%x\n",
Ditto.
> upper_idx);
> } else {
> ret = -EINVAL;
> @@ -795,7 +759,8 @@ static void mt7981_phy_finetune(struct phy_device *phydev)
>
> /* TR_OPEN_LOOP_EN = 1, lpf_x_average = 9 */
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG234,
> - MTK_PHY_TR_OPEN_LOOP_EN_MASK | MTK_PHY_LPF_X_AVERAGE_MASK,
> + MTK_PHY_TR_OPEN_LOOP_EN_MASK |
> + MTK_PHY_LPF_X_AVERAGE_MASK,
Ditto.
> BIT(0) | FIELD_PREP(MTK_PHY_LPF_X_AVERAGE_MASK, 0x9));
>
> /* rg_tr_lpf_cnt_val = 512 */
> @@ -864,7 +829,8 @@ static void mt7988_phy_finetune(struct phy_device *phydev)
>
> /* TR_OPEN_LOOP_EN = 1, lpf_x_average = 10 */
> phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG234,
> - MTK_PHY_TR_OPEN_LOOP_EN_MASK | MTK_PHY_LPF_X_AVERAGE_MASK,
> + MTK_PHY_TR_OPEN_LOOP_EN_MASK |
> + MTK_PHY_LPF_X_AVERAGE_MASK,
Ditto.
> BIT(0) | FIELD_PREP(MTK_PHY_LPF_X_AVERAGE_MASK, 0xa));
>
> /* rg_tr_lpf_cnt_val = 1023 */
> @@ -976,7 +942,8 @@ static void mt798x_phy_eee(struct phy_device *phydev)
> phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
>
> phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_3);
> - __phy_modify(phydev, MTK_PHY_LPI_REG_14, MTK_PHY_LPI_WAKE_TIMER_1000_MASK,
> + __phy_modify(phydev, MTK_PHY_LPI_REG_14,
> + MTK_PHY_LPI_WAKE_TIMER_1000_MASK,
> FIELD_PREP(MTK_PHY_LPI_WAKE_TIMER_1000_MASK, 0x19c));
Ditto.
>
> __phy_modify(phydev, MTK_PHY_LPI_REG_1c, MTK_PHY_SMI_DET_ON_THRESH_MASK,
> @@ -986,7 +953,8 @@ static void mt798x_phy_eee(struct phy_device *phydev)
> phy_modify_mmd(phydev, MDIO_MMD_VEND1,
> MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG122,
> MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK,
> - FIELD_PREP(MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK, 0xff));
> + FIELD_PREP(MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK,
> + 0xff));
Ditto.
> }
>
> static int cal_sw(struct phy_device *phydev, enum CAL_ITEM cal_item,
> @@ -1130,57 +1098,13 @@ static int mt798x_phy_config_init(struct phy_device *phydev)
> return mt798x_phy_calibration(phydev);
> }
>
> -static int mt798x_phy_hw_led_on_set(struct phy_device *phydev, u8 index,
> - bool on)
> -{
> - unsigned int bit_on = MTK_PHY_LED_STATE_FORCE_ON + (index ? 16 : 0);
> - struct mtk_socphy_priv *priv = phydev->priv;
> - bool changed;
> -
> - if (on)
> - changed = !test_and_set_bit(bit_on, &priv->led_state);
> - else
> - changed = !!test_and_clear_bit(bit_on, &priv->led_state);
> -
> - changed |= !!test_and_clear_bit(MTK_PHY_LED_STATE_NETDEV +
> - (index ? 16 : 0), &priv->led_state);
> - if (changed)
> - return phy_modify_mmd(phydev, MDIO_MMD_VEND2, index ?
> - MTK_PHY_LED1_ON_CTRL : MTK_PHY_LED0_ON_CTRL,
If you're moving this code, don't even correct this formatting in the
new file. If you correct the formatting in a patch _before_ this one,
then do the move, the formatting will then be correct in the new file
and the code move will be exactly that - just a code move.
> static int mt798x_phy_led_blink_set(struct phy_device *phydev, u8 index,
> unsigned long *delay_on,
> unsigned long *delay_off)
> {
> bool blinking = false;
> int err = 0;
> + struct mtk_socphy_priv *priv = phydev->priv;
Netdev wants reverse Christmas-tree. Longest local variable declaration
first, followed by next shorter and so on. So, in this case, it should
be priv, blinking, then err in that order.
> static int mt798x_phy_led_brightness_set(struct phy_device *phydev,
> u8 index, enum led_brightness value)
> {
> int err;
> + struct mtk_socphy_priv *priv = phydev->priv;
Reverse Christmas tree please.
> static int mt798x_phy_led_hw_control_set(struct phy_device *phydev, u8 index,
> unsigned long rules)
> {
> - unsigned int bit_netdev = MTK_PHY_LED_STATE_NETDEV + (index ? 16 : 0);
> struct mtk_socphy_priv *priv = phydev->priv;
> - u16 on = 0, blink = 0;
> - int ret;
> -
> - if (index > 1)
> - return -EINVAL;
> -
> - if (rules & BIT(TRIGGER_NETDEV_FULL_DUPLEX))
> - on |= MTK_PHY_LED_ON_FDX;
> -
> - if (rules & BIT(TRIGGER_NETDEV_HALF_DUPLEX))
> - on |= MTK_PHY_LED_ON_HDX;
> -
> - if (rules & (BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK)))
> - on |= MTK_PHY_LED_ON_LINK10;
> -
> - if (rules & (BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK)))
> - on |= MTK_PHY_LED_ON_LINK100;
> -
> - if (rules & (BIT(TRIGGER_NETDEV_LINK_1000) | BIT(TRIGGER_NETDEV_LINK)))
> - on |= MTK_PHY_LED_ON_LINK1000;
>
> - if (rules & BIT(TRIGGER_NETDEV_RX)) {
> - blink |= (on & MTK_PHY_LED_ON_LINK) ?
> - (((on & MTK_PHY_LED_ON_LINK10) ? MTK_PHY_LED_BLINK_10RX : 0) |
> - ((on & MTK_PHY_LED_ON_LINK100) ? MTK_PHY_LED_BLINK_100RX : 0) |
> - ((on & MTK_PHY_LED_ON_LINK1000) ? MTK_PHY_LED_BLINK_1000RX : 0)) :
> - MTK_PHY_LED_BLINK_RX;
Now for this mess - and it should've been caught earlier... far too many
parens. Too many parens make code unreadable. Also, we know "blink"
starts off with the bits clear. So:
if (rules & BIT(TRIGGER_NETDEV_RX)) {
if (on & MTK_PHY_LED_ON_LINK) {
if (on & MTK_PHY_LED_ON_LINK10)
blink |= MTK_PHY_LED_BLINK_10RX;
if (on & MTK_PHY_LED_ON_LINK100)
blink |= MTK_PHY_LED_BLINK_100RX;
if (on & MTK_PHY_LED_ON_LINK1000)
blink |= MTK_PHY_LED_BLINK_1000RX;
} else {
blink |= MTK_PHY_LED_BLINK_RX;
}
}
is a much nicer and easier to read formatting.
Thanks.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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