[PATCH net-next v4 1/5] net: ti: icssg-prueth: Enable PTP timestamping support for SR1.0 devices
From: Diogo Ivo <hidden>
Date: 2024-06-17 15:22:33
Also in:
linux-devicetree, lkml, netdev
Subsystem:
networking drivers, the rest, ti icssg ethernet driver (icssg) · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Enable PTP support for AM65x SR1.0 devices by registering with the IEP infrastructure in order to expose a PTP clock to userspace. Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Wojciech Drewek <redacted> Signed-off-by: Diogo Ivo <redacted> --- drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c | 51 +++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c b/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c
index 7b3304bbd7fc..fa98bdb11ece 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c@@ -1011,16 +1011,44 @@ static int prueth_probe(struct platform_device *pdev) dev_dbg(dev, "sram: pa %llx va %p size %zx\n", prueth->msmcram.pa, prueth->msmcram.va, prueth->msmcram.size); + prueth->iep0 = icss_iep_get_idx(np, 0); + if (IS_ERR(prueth->iep0)) { + ret = dev_err_probe(dev, PTR_ERR(prueth->iep0), + "iep0 get failed\n"); + goto free_pool; + } + + prueth->iep1 = icss_iep_get_idx(np, 1); + if (IS_ERR(prueth->iep1)) { + ret = dev_err_probe(dev, PTR_ERR(prueth->iep1), + "iep1 get failed\n"); + goto put_iep0; + } + + ret = icss_iep_init(prueth->iep0, NULL, NULL, 0); + if (ret) { + dev_err_probe(dev, ret, "failed to init iep0\n"); + goto put_iep; + } + + ret = icss_iep_init(prueth->iep1, NULL, NULL, 0); + if (ret) { + dev_err_probe(dev, ret, "failed to init iep1\n"); + goto exit_iep0; + } + if (eth0_node) { ret = prueth_netdev_init(prueth, eth0_node); if (ret) { dev_err_probe(dev, ret, "netdev init %s failed\n", eth0_node->name); - goto free_pool; + goto exit_iep; } if (of_find_property(eth0_node, "ti,half-duplex-capable", NULL)) prueth->emac[PRUETH_MAC0]->half_duplex = 1; + + prueth->emac[PRUETH_MAC0]->iep = prueth->iep0; } if (eth1_node) {
@@ -1033,6 +1061,8 @@ static int prueth_probe(struct platform_device *pdev) if (of_find_property(eth1_node, "ti,half-duplex-capable", NULL)) prueth->emac[PRUETH_MAC1]->half_duplex = 1; + + prueth->emac[PRUETH_MAC1]->iep = prueth->iep1; } /* register the network devices */
@@ -1091,6 +1121,19 @@ static int prueth_probe(struct platform_device *pdev) prueth_netdev_exit(prueth, eth_node); } +exit_iep: + icss_iep_exit(prueth->iep1); +exit_iep0: + icss_iep_exit(prueth->iep0); + +put_iep: + icss_iep_put(prueth->iep1); + +put_iep0: + icss_iep_put(prueth->iep0); + prueth->iep0 = NULL; + prueth->iep1 = NULL; + free_pool: gen_pool_free(prueth->sram_pool, (unsigned long)prueth->msmcram.va, msmc_ram_size);
@@ -1138,6 +1181,12 @@ static void prueth_remove(struct platform_device *pdev) prueth_netdev_exit(prueth, eth_node); } + icss_iep_exit(prueth->iep1); + icss_iep_exit(prueth->iep0); + + icss_iep_put(prueth->iep1); + icss_iep_put(prueth->iep0); + gen_pool_free(prueth->sram_pool, (unsigned long)prueth->msmcram.va, MSMC_RAM_SIZE_SR1);
--
2.45.2