net: ti: icssg-prueth: Enable PTP timestamping support for SR1.0 devices
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 <wojciech.drewek@intel.com> Signed-off-by: Diogo Ivo <diogo.ivo@siemens.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1011,16 +1011,44 @@ static int prueth_probe(struct platform_device *pdev)
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dev_dbg(dev, "sram: pa %llx va %p size %zx\n", prueth->msmcram.pa,
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prueth->msmcram.va, prueth->msmcram.size);
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prueth->iep0 = icss_iep_get_idx(np, 0);
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if (IS_ERR(prueth->iep0)) {
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ret = dev_err_probe(dev, PTR_ERR(prueth->iep0),
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"iep0 get failed\n");
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goto free_pool;
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}
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prueth->iep1 = icss_iep_get_idx(np, 1);
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if (IS_ERR(prueth->iep1)) {
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ret = dev_err_probe(dev, PTR_ERR(prueth->iep1),
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"iep1 get failed\n");
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goto put_iep0;
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}
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ret = icss_iep_init(prueth->iep0, NULL, NULL, 0);
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if (ret) {
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dev_err_probe(dev, ret, "failed to init iep0\n");
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goto put_iep;
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}
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ret = icss_iep_init(prueth->iep1, NULL, NULL, 0);
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if (ret) {
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dev_err_probe(dev, ret, "failed to init iep1\n");
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goto exit_iep0;
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}
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if (eth0_node) {
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ret = prueth_netdev_init(prueth, eth0_node);
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if (ret) {
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dev_err_probe(dev, ret, "netdev init %s failed\n",
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eth0_node->name);
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goto free_pool;
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goto exit_iep;
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}
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if (of_find_property(eth0_node, "ti,half-duplex-capable", NULL))
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prueth->emac[PRUETH_MAC0]->half_duplex = 1;
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prueth->emac[PRUETH_MAC0]->iep = prueth->iep0;
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}
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if (eth1_node) {
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@ -1033,6 +1061,8 @@ static int prueth_probe(struct platform_device *pdev)
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if (of_find_property(eth1_node, "ti,half-duplex-capable", NULL))
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prueth->emac[PRUETH_MAC1]->half_duplex = 1;
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prueth->emac[PRUETH_MAC1]->iep = prueth->iep1;
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}
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/* register the network devices */
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@ -1091,6 +1121,19 @@ netdev_exit:
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prueth_netdev_exit(prueth, eth_node);
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}
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exit_iep:
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icss_iep_exit(prueth->iep1);
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exit_iep0:
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icss_iep_exit(prueth->iep0);
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put_iep:
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icss_iep_put(prueth->iep1);
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put_iep0:
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icss_iep_put(prueth->iep0);
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prueth->iep0 = NULL;
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prueth->iep1 = NULL;
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free_pool:
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gen_pool_free(prueth->sram_pool,
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(unsigned long)prueth->msmcram.va, msmc_ram_size);
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@ -1138,6 +1181,12 @@ static void prueth_remove(struct platform_device *pdev)
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prueth_netdev_exit(prueth, eth_node);
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}
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icss_iep_exit(prueth->iep1);
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icss_iep_exit(prueth->iep0);
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icss_iep_put(prueth->iep1);
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icss_iep_put(prueth->iep0);
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gen_pool_free(prueth->sram_pool,
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(unsigned long)prueth->msmcram.va,
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MSMC_RAM_SIZE_SR1);
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