kernel/linux.git/drivers/net/phy/adin.c, branch linux-6.9.y

net: phy: adin: allow control of Fast Link Down

2023-11-30T03:49:38+00:00

Add support to allow Fast Link Down (aka "Enhanced link detection") to be controlled via the ETHTOOL_PHY_FAST_LINK_DOWN tunable. These PHYs have this feature enabled by default. Signed-off-by: Vincent Whitchurch Acked-by: Nuno Sa Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/20231127-adin-fld-v1-1-797f6423fd48@axis.com Signed-off-by: Jakub Kicinski

net: move from strlcpy with unused retval to strscpy

2022-08-31T21:11:07+00:00

Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Acked-by: Marc Kleine-Budde # for CAN Link: https://lore.kernel.org/r/20220830201457.7984-1-wsa+renesas@sang-engineering.com Signed-off-by: Jakub Kicinski

net: phy: adin: add support for clock output

2022-05-19T02:58:25+00:00

The ADIN1300 supports generating certain clocks on its GP_CLK pin, as well as providing the reference clock on CLK25_REF. Add support for selecting the clock via device-tree properties. Technically the phy also supports a recovered 125MHz clock for synchronous ethernet. SyncE should be configured dynamically at runtime, however Linux does not currently have a toggle for this, so support is explicitly omitted. Co-developed-by: Alvaro Karsz Signed-off-by: Alvaro Karsz Signed-off-by: Josua Mayer Signed-off-by: Jakub Kicinski

net: phy: Demote non-compliant kernel-doc headers

2021-05-17T21:12:39+00:00

Fixes the following W=1 kernel build warning(s): drivers/net/phy/adin.c:3: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/net/phy/rockchip.c:3: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Heiner Kallweit Cc: Russell King Signed-off-by: Yang Shen Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: phy: adin: remove the use of the .ack_interrupt()

2020-11-17T19:37:09+00:00

In preparation of removing the .ack_interrupt() callback, we must replace its occurrences (aka phy_clear_interrupt), from the 2 places where it is called from (phy_enable_interrupts and phy_disable_interrupts), with equivalent functionality. This means that clearing interrupts now becomes something that the PHY driver is responsible of doing, before enabling interrupts and after clearing them. Make this driver follow the new contract. Signed-off-by: Ioana Ciornei Acked-by: Alexandru Ardelean Signed-off-by: Jakub Kicinski

net: phy: adin: implement generic .handle_interrupt() callback

2020-11-17T19:37:05+00:00

In an attempt to actually support shared IRQs in phylib, we now move the responsibility of triggering the phylib state machine or just returning IRQ_NONE, based on the IRQ status register, to the PHY driver. Having 3 different IRQ handling callbacks (.handle_interrupt(), .did_interrupt() and .ack_interrupt() ) is confusing so let the PHY driver implement directly an IRQ handler like any other device driver. Make this driver follow the new convention. Signed-off-by: Ioana Ciornei Acked-by: Alexandru Ardelean Signed-off-by: Jakub Kicinski

net: phy: adin: implement cable-test support

2020-11-05T01:01:21+00:00

The ADIN1300/ADIN1200 support cable diagnostics using TDR. The cable fault detection is automatically run on all four pairs looking at all combinations of pair faults by first putting the PHY in standby (clear the LINK_EN bit, PHY_CTRL_3 register, Address 0x0017) and then enabling the diagnostic clock (set the DIAG_CLK_EN bit, PHY_CTRL_1 register, Address 0x0012). Cable diagnostics can then be run (set the CDIAG_RUN bit in the CDIAG_RUN register, Address 0xBA1B). The results are reported for each pair in the cable diagnostics results registers, CDIAG_DTLD_RSLTS_0, CDIAG_DTLD_RSLTS_1, CDIAG_DTLD_RSLTS_2, and CDIAG_DTLD_RSLTS_3, Address 0xBA1D to Address 0xBA20). The distance to the first fault for each pair is reported in the cable fault distance registers, CDIAG_FLT_DIST_0, CDIAG_FLT_DIST_1, CDIAG_FLT_DIST_2, and CDIAG_FLT_DIST_3, Address 0xBA21 to Address 0xBA24). This change implements support for this using phylib's cable-test support. Reviewed-by: Andrew Lunn Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201103074436.93790-2-alexandru.ardelean@analog.com Signed-off-by: Jakub Kicinski

net: phy: adin: disable diag clock & disable standby mode in config_aneg

2020-11-05T01:01:20+00:00

When the PHY powers up, the diagnostics clock isn't enabled (bit 2 in register PHY_CTRL_1 (0x0012)). Also, the PHY is not in standby mode, so bit 13 in PHY_CTRL_3 (0x0017) is always set at power up. The standby mode and the diagnostics clock are both meant to be for the cable diagnostics feature of the PHY (in phylib this would be equivalent to the cable-test support), and for the frame-generator feature of the PHY. In standby mode, the PHY doesn't negotiate links or manage links. To use the cable diagnostics/test (or frame-generator), the PHY must be first set in standby mode, so that the link operation doesn't interfere. Then, the diagnostics clock must be enabled. For the cable-test feature, when the operation finishes, the PHY goes into PHY_UP state, and the config_aneg hook is called. For the ADIN PHY, we need to make sure that during autonegotiation configuration/setup the PHY is removed from standby mode and the diagnostics clock is disabled, so that normal operation is resumed. This change does that by moving the set of the ADIN1300_LINKING_EN bit (2) in the config_aneg (to disable standby mode). Previously, this was set in the downshift setup, because the downshift retry value and the ADIN1300_LINKING_EN are in the same register. And the ADIN1300_DIAG_CLK_EN bit (13) is cleared, to disable the diagnostics clock. Reviewed-by: Andrew Lunn Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201103074436.93790-1-alexandru.ardelean@analog.com Signed-off-by: Jakub Kicinski

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

net: phy: Fixup parameters in kerneldoc

2020-07-07T19:47:10+00:00

Correct the kerneldoc for a few structure and function calls, as reported by C=1 W=1. Cc: Alexandru Ardelean Reviewed-by: Florian Fainelli Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller