Merge tag 'mute-led-rework' of https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound into asoc-5.13

ALSA: control - add generic LED API

This patchset tries to resolve the diversity in the audio LED
control among the ALSA drivers. A new control layer registration
is introduced which allows to run additional operations on
top of the elementary ALSA sound controls.

A new control access group (three bits in the access flags)
was introduced to carry the LED group information for
the sound controls. The low-level sound drivers can just
mark those controls using this access group. This information
is not exported to the user space, but user space can
manage the LED sound control associations through sysfs
(last patch) per Mark's request. It makes things fully
configurable in the kernel and user space (UCM).

The actual state ('route') evaluation is really easy
(the minimal value check for all channels / controls / cards).
If there's more complicated logic for a given hardware,
the card driver may eventually export a new read-only
sound control for the LED group and do the logic itself.

The new LED trigger control code is completely separated
and possibly optional (there's no symbol dependency).
The full code separation allows eventually to move this
LED trigger control to the user space in future.
Actually it replaces the already present functionality
in the kernel space (HDA drivers) and allows a quick adoption
for the recent hardware (ASoC codecs including SoundWire).

snd_ctl_led            24576  0

The sound driver implementation is really easy:

1) call snd_ctl_led_request() when control LED layer should be
   automatically activated
   / it calls module_request("snd-ctl-led") on demand /
2) mark all related kcontrols with
        SNDRV_CTL_ELEM_ACCESS_SPK_LED or
        SNDRV_CTL_ELEM_ACCESS_MIC_LED

Link: https://lore.kernel.org/r/20210317172945.842280-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 87 insertions, 17 deletions

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 515c5b29d7aa..224fc37a6757 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -190,7 +190,6 @@ static void enetc_pf_set_rx_mode(struct net_device *ndev)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
 	struct enetc_pf *pf = enetc_si_priv(priv->si);
-	char vlan_promisc_simap = pf->vlan_promisc_simap;
 	struct enetc_hw *hw = &priv->si->hw;
 	bool uprom = false, mprom = false;
 	struct enetc_mac_filter *filter;
@@ -203,16 +202,12 @@ static void enetc_pf_set_rx_mode(struct net_device *ndev)
 		psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0);
 		uprom = true;
 		mprom = true;
-		/* Enable VLAN promiscuous mode for SI0 (PF) */
-		vlan_promisc_simap |= BIT(0);
 	} else if (ndev->flags & IFF_ALLMULTI) {
 		/* enable multi cast promisc mode for SI0 (PF) */
 		psipmr = ENETC_PSIPMR_SET_MP(0);
 		mprom = true;
 	}
 
-	enetc_set_vlan_promisc(&pf->si->hw, vlan_promisc_simap);
-
 	/* first 2 filter entries belong to PF */
 	if (!uprom) {
 		/* Update unicast filters */
@@ -320,7 +315,7 @@ static void enetc_set_loopback(struct net_device *ndev, bool en)
 	u32 reg;
 
 	reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
-	if (reg & ENETC_PMO_IFM_RG) {
+	if (reg & ENETC_PM0_IFM_RG) {
 		/* RGMII mode */
 		reg = (reg & ~ENETC_PM0_IFM_RLP) |
 		      (en ? ENETC_PM0_IFM_RLP : 0);
@@ -495,17 +490,30 @@ static void enetc_configure_port_mac(struct enetc_hw *hw)
 
 	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
 		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC);
+
+	/* On LS1028A, the MAC RX FIFO defaults to 2, which is too high
+	 * and may lead to RX lock-up under traffic. Set it to 1 instead,
+	 * as recommended by the hardware team.
+	 */
+	enetc_port_wr(hw, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL);
 }
 
 static void enetc_mac_config(struct enetc_hw *hw, phy_interface_t phy_mode)
 {
-	/* set auto-speed for RGMII */
-	if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG ||
-	    phy_interface_mode_is_rgmii(phy_mode))
-		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO);
+	u32 val;
+
+	if (phy_interface_mode_is_rgmii(phy_mode)) {
+		val = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+		val &= ~ENETC_PM0_IFM_EN_AUTO;
+		val &= ENETC_PM0_IFM_IFMODE_MASK;
+		val |= ENETC_PM0_IFM_IFMODE_GMII | ENETC_PM0_IFM_RG;
+		enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+	}
 
-	if (phy_mode == PHY_INTERFACE_MODE_USXGMII)
-		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII);
+	if (phy_mode == PHY_INTERFACE_MODE_USXGMII) {
+		val = ENETC_PM0_IFM_FULL_DPX | ENETC_PM0_IFM_IFMODE_XGMII;
+		enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+	}
 }
 
 static void enetc_mac_enable(struct enetc_hw *hw, bool en)
@@ -937,6 +945,34 @@ static void enetc_pl_mac_config(struct phylink_config *config,
 		phylink_set_pcs(priv->phylink, &pf->pcs->pcs);
 }
 
+static void enetc_force_rgmii_mac(struct enetc_hw *hw, int speed, int duplex)
+{
+	u32 old_val, val;
+
+	old_val = val = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+
+	if (speed == SPEED_1000) {
+		val &= ~ENETC_PM0_IFM_SSP_MASK;
+		val |= ENETC_PM0_IFM_SSP_1000;
+	} else if (speed == SPEED_100) {
+		val &= ~ENETC_PM0_IFM_SSP_MASK;
+		val |= ENETC_PM0_IFM_SSP_100;
+	} else if (speed == SPEED_10) {
+		val &= ~ENETC_PM0_IFM_SSP_MASK;
+		val |= ENETC_PM0_IFM_SSP_10;
+	}
+
+	if (duplex == DUPLEX_FULL)
+		val |= ENETC_PM0_IFM_FULL_DPX;
+	else
+		val &= ~ENETC_PM0_IFM_FULL_DPX;
+
+	if (val == old_val)
+		return;
+
+	enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+}
+
 static void enetc_pl_mac_link_up(struct phylink_config *config,
 				 struct phy_device *phy, unsigned int mode,
 				 phy_interface_t interface, int speed,
@@ -949,6 +985,10 @@ static void enetc_pl_mac_link_up(struct phylink_config *config,
 	if (priv->active_offloads & ENETC_F_QBV)
 		enetc_sched_speed_set(priv, speed);
 
+	if (!phylink_autoneg_inband(mode) &&
+	    phy_interface_mode_is_rgmii(interface))
+		enetc_force_rgmii_mac(&pf->si->hw, speed, duplex);
+
 	enetc_mac_enable(&pf->si->hw, true);
 }
 
@@ -1041,6 +1081,26 @@ static int enetc_init_port_rss_memory(struct enetc_si *si)
 	return err;
 }
 
+static void enetc_init_unused_port(struct enetc_si *si)
+{
+	struct device *dev = &si->pdev->dev;
+	struct enetc_hw *hw = &si->hw;
+	int err;
+
+	si->cbd_ring.bd_count = ENETC_CBDR_DEFAULT_SIZE;
+	err = enetc_alloc_cbdr(dev, &si->cbd_ring);
+	if (err)
+		return;
+
+	enetc_setup_cbdr(hw, &si->cbd_ring);
+
+	enetc_init_port_rfs_memory(si);
+	enetc_init_port_rss_memory(si);
+
+	enetc_clear_cbdr(hw);
+	enetc_free_cbdr(dev, &si->cbd_ring);
+}
+
 static int enetc_pf_probe(struct pci_dev *pdev,
 			  const struct pci_device_id *ent)
 {
@@ -1051,11 +1111,6 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	struct enetc_pf *pf;
 	int err;
 
-	if (node && !of_device_is_available(node)) {
-		dev_info(&pdev->dev, "device is disabled, skipping\n");
-		return -ENODEV;
-	}
-
 	err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf));
 	if (err) {
 		dev_err(&pdev->dev, "PCI probing failed\n");
@@ -1069,6 +1124,13 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 		goto err_map_pf_space;
 	}
 
+	if (node && !of_device_is_available(node)) {
+		enetc_init_unused_port(si);
+		dev_info(&pdev->dev, "device is disabled, skipping\n");
+		err = -ENODEV;
+		goto err_device_disabled;
+	}
+
 	pf = enetc_si_priv(si);
 	pf->si = si;
 	pf->total_vfs = pci_sriov_get_totalvfs(pdev);
@@ -1108,6 +1170,12 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 		goto err_init_port_rss;
 	}
 
+	err = enetc_configure_si(priv);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to configure SI\n");
+		goto err_config_si;
+	}
+
 	err = enetc_alloc_msix(priv);
 	if (err) {
 		dev_err(&pdev->dev, "MSIX alloc failed\n");
@@ -1136,6 +1204,7 @@ err_phylink_create:
 	enetc_mdiobus_destroy(pf);
 err_mdiobus_create:
 	enetc_free_msix(priv);
+err_config_si:
 err_init_port_rss:
 err_init_port_rfs:
 err_alloc_msix:
@@ -1144,6 +1213,7 @@ err_alloc_si_res:
 	si->ndev = NULL;
 	free_netdev(ndev);
 err_alloc_netdev:
+err_device_disabled:
 err_map_pf_space:
 	enetc_pci_remove(pdev);