3  * Lynx PCS MDIO helpers
8 #include <linux/pcs-lynx.h>
11 #define SGMII_CLOCK_PERIOD_NS		8 /* PCS is clocked at 125 MHz */
24 	struct phylink_pcs pcs;  member
35 #define phylink_pcs_to_lynx(pl_pcs) container_of((pl_pcs), struct lynx_pcs, pcs)
36 #define lynx_to_phylink_pcs(lynx) (&(lynx)->pcs)
38 static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs,  in lynx_pcs_get_state_usxgmii()  argument
41 	struct mii_bus *bus = pcs->bus;  in lynx_pcs_get_state_usxgmii()
42 	int addr = pcs->addr;  in lynx_pcs_get_state_usxgmii()
61 static void lynx_pcs_get_state_2500basex(struct mdio_device *pcs,  in lynx_pcs_get_state_2500basex()  argument
66 	bmsr = mdiodev_read(pcs, MII_BMSR);  in lynx_pcs_get_state_2500basex()
82 static void lynx_pcs_get_state(struct phylink_pcs *pcs,  in lynx_pcs_get_state()  argument
85 	struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);  in lynx_pcs_get_state()
114 static int lynx_pcs_config_giga(struct mdio_device *pcs,  in lynx_pcs_config_giga()  argument
128 		mdiodev_write(pcs, LINK_TIMER_LO, link_timer & 0xffff);  in lynx_pcs_config_giga()
129 		mdiodev_write(pcs, LINK_TIMER_HI, link_timer >> 16);  in lynx_pcs_config_giga()
141 	err = mdiodev_modify(pcs, IF_MODE,  in lynx_pcs_config_giga()
147 	return phylink_mii_c22_pcs_config(pcs, interface, advertising,  in lynx_pcs_config_giga()
151 static int lynx_pcs_config_usxgmii(struct mdio_device *pcs,  in lynx_pcs_config_usxgmii()  argument
155 	struct mii_bus *bus = pcs->bus;  in lynx_pcs_config_usxgmii()
156 	int addr = pcs->addr;  in lynx_pcs_config_usxgmii()
159 		dev_err(&pcs->dev, "USXGMII only supports in-band AN for now\n");  in lynx_pcs_config_usxgmii()
170 static int lynx_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,  in lynx_pcs_config()  argument
174 	struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);  in lynx_pcs_config()
202 static void lynx_pcs_an_restart(struct phylink_pcs *pcs)  in lynx_pcs_an_restart()  argument
204 	struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);  in lynx_pcs_an_restart()
209 static void lynx_pcs_link_up_sgmii(struct mdio_device *pcs,  in lynx_pcs_link_up_sgmii()  argument
215 	/* The PCS needs to be configured manually only  in lynx_pcs_link_up_sgmii()
238 		dev_err(&pcs->dev, "Invalid PCS speed %d\n", speed);  in lynx_pcs_link_up_sgmii()
243 	mdiodev_modify(pcs, IF_MODE,  in lynx_pcs_link_up_sgmii()
264 static void lynx_pcs_link_up_2500basex(struct mdio_device *pcs,  in lynx_pcs_link_up_2500basex()  argument
271 		dev_err(&pcs->dev, "AN not supported for 2500BaseX\n");  in lynx_pcs_link_up_2500basex()
279 	mdiodev_modify(pcs, IF_MODE,  in lynx_pcs_link_up_2500basex()
284 static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,  in lynx_pcs_link_up()  argument
288 	struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);  in lynx_pcs_link_up()
325 	lynx->pcs.ops = &lynx_pcs_phylink_ops;  in lynx_pcs_create()
326 	lynx->pcs.neg_mode = true;  in lynx_pcs_create()
327 	lynx->pcs.poll = true;  in lynx_pcs_create()
335 	struct phylink_pcs *pcs;  in lynx_pcs_create_mdiodev()  local
341 	pcs = lynx_pcs_create(mdio);  in lynx_pcs_create_mdiodev()
351 	return pcs;  in lynx_pcs_create_mdiodev()
356  * lynx_pcs_create_fwnode() creates a lynx PCS instance from the fwnode
368 	struct phylink_pcs *pcs;  in lynx_pcs_create_fwnode()  local
377 	pcs = lynx_pcs_create(mdio);  in lynx_pcs_create_fwnode()
387 	return pcs;  in lynx_pcs_create_fwnode()
391 void lynx_pcs_destroy(struct phylink_pcs *pcs)  in lynx_pcs_destroy()  argument
393 	struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);  in lynx_pcs_destroy()
400 MODULE_DESCRIPTION("NXP Lynx PCS phylink library");