Merge tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver pull request for 4.2-rc1. Lots of mei, extcon, coresight, uio, mic, and other driver updates in here. Full details in the shortlog. All of these have been in linux-next for some time with no reported problems" * tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (176 commits) mei: me: wait for power gating exit confirmation mei: reset flow control on the last client disconnection MAINTAINERS: mei: add mei_cl_bus.h to maintained file list misc: sram: sort and clean up included headers misc: sram: move reserved block logic out of probe function misc: sram: add private struct device and virt_base members misc: sram: report correct SRAM pool size misc: sram: bump error message level on unclean driver unbinding misc: sram: fix device node reference leak on error misc: sram: fix enabled clock leak on error path misc: mic: Fix reported static checker warning misc: mic: Fix randconfig build error by including errno.h uio: pruss: Drop depends on ARCH_DAVINCI_DA850 from config uio: pruss: Add CONFIG_HAS_IOMEM dependence uio: pruss: Include <linux/sizes.h> extcon: Redefine the unique id of supported external connectors without 'enum extcon' type char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion parport: check exclusive access before register w1: use correct lock on error in w1_seq_show() ...
This commit is contained in:
Linus Torvalds
@@ -32,6 +32,51 @@ struct mei_nfc_hdr {
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u16 data_size;
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} __packed;
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struct mei_nfc_cmd {
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struct mei_nfc_hdr hdr;
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u8 sub_command;
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u8 data[];
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} __packed;
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struct mei_nfc_reply {
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struct mei_nfc_hdr hdr;
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u8 sub_command;
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u8 reply_status;
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u8 data[];
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} __packed;
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struct mei_nfc_if_version {
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u8 radio_version_sw[3];
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u8 reserved[3];
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u8 radio_version_hw[3];
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u8 i2c_addr;
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u8 fw_ivn;
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u8 vendor_id;
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u8 radio_type;
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} __packed;
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struct mei_nfc_connect {
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u8 fw_ivn;
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u8 vendor_id;
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} __packed;
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struct mei_nfc_connect_resp {
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u8 fw_ivn;
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u8 vendor_id;
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u16 me_major;
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u16 me_minor;
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u16 me_hotfix;
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u16 me_build;
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} __packed;
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#define MEI_NFC_CMD_MAINTENANCE 0x00
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#define MEI_NFC_CMD_HCI_SEND 0x01
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#define MEI_NFC_CMD_HCI_RECV 0x02
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#define MEI_NFC_SUBCMD_CONNECT 0x00
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#define MEI_NFC_SUBCMD_IF_VERSION 0x01
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#define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
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#define MEI_DUMP_SKB_IN(info, skb) \
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@@ -45,51 +90,169 @@ do { \
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do { \
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pr_debug("%s:\n", info); \
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print_hex_dump_debug("mei out: ", DUMP_PREFIX_OFFSET, \
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16, 1, (skb)->data, (skb)->len, false); \
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16, 1, (skb)->data, (skb)->len, false); \
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} while (0)
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int nfc_mei_phy_enable(void *phy_id)
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#define MEI_DUMP_NFC_HDR(info, _hdr) \
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do { \
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pr_debug("%s:\n", info); \
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pr_debug("cmd=%02d status=%d req_id=%d rsvd=%d size=%d\n", \
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(_hdr)->cmd, (_hdr)->status, (_hdr)->req_id, \
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(_hdr)->reserved, (_hdr)->data_size); \
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} while (0)
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static int mei_nfc_if_version(struct nfc_mei_phy *phy)
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{
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int r;
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struct nfc_mei_phy *phy = phy_id;
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struct mei_nfc_cmd cmd;
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struct mei_nfc_reply *reply = NULL;
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struct mei_nfc_if_version *version;
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size_t if_version_length;
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int bytes_recv, r;
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pr_info("%s\n", __func__);
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if (phy->powered == 1)
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return 0;
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memset(&cmd, 0, sizeof(struct mei_nfc_cmd));
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cmd.hdr.cmd = MEI_NFC_CMD_MAINTENANCE;
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cmd.hdr.data_size = 1;
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cmd.sub_command = MEI_NFC_SUBCMD_IF_VERSION;
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r = mei_cl_enable_device(phy->device);
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MEI_DUMP_NFC_HDR("version", &cmd.hdr);
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r = mei_cl_send(phy->device, (u8 *)&cmd, sizeof(struct mei_nfc_cmd));
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if (r < 0) {
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pr_err("Could not enable device\n");
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pr_err("Could not send IF version cmd\n");
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return r;
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}
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r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy);
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if (r) {
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pr_err("Event cb registration failed\n");
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mei_cl_disable_device(phy->device);
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phy->powered = 0;
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/* to be sure on the stack we alloc memory */
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if_version_length = sizeof(struct mei_nfc_reply) +
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sizeof(struct mei_nfc_if_version);
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return r;
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reply = kzalloc(if_version_length, GFP_KERNEL);
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if (!reply)
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return -ENOMEM;
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bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, if_version_length);
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if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) {
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pr_err("Could not read IF version\n");
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r = -EIO;
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goto err;
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}
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phy->powered = 1;
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version = (struct mei_nfc_if_version *)reply->data;
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return 0;
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phy->fw_ivn = version->fw_ivn;
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phy->vendor_id = version->vendor_id;
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phy->radio_type = version->radio_type;
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err:
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kfree(reply);
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return r;
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}
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EXPORT_SYMBOL_GPL(nfc_mei_phy_enable);
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void nfc_mei_phy_disable(void *phy_id)
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static int mei_nfc_connect(struct nfc_mei_phy *phy)
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{
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struct nfc_mei_phy *phy = phy_id;
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struct mei_nfc_cmd *cmd, *reply;
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struct mei_nfc_connect *connect;
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struct mei_nfc_connect_resp *connect_resp;
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size_t connect_length, connect_resp_length;
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int bytes_recv, r;
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pr_info("%s\n", __func__);
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mei_cl_disable_device(phy->device);
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connect_length = sizeof(struct mei_nfc_cmd) +
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sizeof(struct mei_nfc_connect);
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phy->powered = 0;
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connect_resp_length = sizeof(struct mei_nfc_cmd) +
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sizeof(struct mei_nfc_connect_resp);
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cmd = kzalloc(connect_length, GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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connect = (struct mei_nfc_connect *)cmd->data;
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reply = kzalloc(connect_resp_length, GFP_KERNEL);
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if (!reply) {
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kfree(cmd);
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return -ENOMEM;
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}
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connect_resp = (struct mei_nfc_connect_resp *)reply->data;
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cmd->hdr.cmd = MEI_NFC_CMD_MAINTENANCE;
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cmd->hdr.data_size = 3;
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cmd->sub_command = MEI_NFC_SUBCMD_CONNECT;
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connect->fw_ivn = phy->fw_ivn;
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connect->vendor_id = phy->vendor_id;
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MEI_DUMP_NFC_HDR("connect request", &cmd->hdr);
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r = mei_cl_send(phy->device, (u8 *)cmd, connect_length);
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if (r < 0) {
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pr_err("Could not send connect cmd %d\n", r);
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goto err;
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}
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bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, connect_resp_length);
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if (bytes_recv < 0) {
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r = bytes_recv;
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pr_err("Could not read connect response %d\n", r);
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goto err;
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}
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MEI_DUMP_NFC_HDR("connect reply", &reply->hdr);
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pr_info("IVN 0x%x Vendor ID 0x%x\n",
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connect_resp->fw_ivn, connect_resp->vendor_id);
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pr_info("ME FW %d.%d.%d.%d\n",
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connect_resp->me_major, connect_resp->me_minor,
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connect_resp->me_hotfix, connect_resp->me_build);
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r = 0;
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err:
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kfree(reply);
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kfree(cmd);
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return r;
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}
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static int mei_nfc_send(struct nfc_mei_phy *phy, u8 *buf, size_t length)
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{
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struct mei_nfc_hdr *hdr;
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u8 *mei_buf;
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int err;
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err = -ENOMEM;
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mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL);
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if (!mei_buf)
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goto out;
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hdr = (struct mei_nfc_hdr *)mei_buf;
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hdr->cmd = MEI_NFC_CMD_HCI_SEND;
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hdr->status = 0;
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hdr->req_id = phy->req_id;
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hdr->reserved = 0;
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hdr->data_size = length;
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MEI_DUMP_NFC_HDR("send", hdr);
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memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length);
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err = mei_cl_send(phy->device, mei_buf, length + MEI_NFC_HEADER_SIZE);
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if (err < 0)
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goto out;
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if (!wait_event_interruptible_timeout(phy->send_wq,
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phy->recv_req_id == phy->req_id, HZ)) {
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pr_err("NFC MEI command timeout\n");
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err = -ETIME;
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} else {
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phy->req_id++;
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}
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out:
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kfree(mei_buf);
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return err;
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}
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EXPORT_SYMBOL_GPL(nfc_mei_phy_disable);
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/*
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* Writing a frame must not return the number of written bytes.
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@@ -103,14 +266,38 @@ static int nfc_mei_phy_write(void *phy_id, struct sk_buff *skb)
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MEI_DUMP_SKB_OUT("mei frame sent", skb);
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r = mei_cl_send(phy->device, skb->data, skb->len);
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r = mei_nfc_send(phy, skb->data, skb->len);
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if (r > 0)
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r = 0;
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return r;
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}
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void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
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static int mei_nfc_recv(struct nfc_mei_phy *phy, u8 *buf, size_t length)
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{
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struct mei_nfc_hdr *hdr;
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int received_length;
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received_length = mei_cl_recv(phy->device, buf, length);
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if (received_length < 0)
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return received_length;
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hdr = (struct mei_nfc_hdr *) buf;
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MEI_DUMP_NFC_HDR("receive", hdr);
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if (hdr->cmd == MEI_NFC_CMD_HCI_SEND) {
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phy->recv_req_id = hdr->req_id;
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wake_up(&phy->send_wq);
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return 0;
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}
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return received_length;
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}
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static void nfc_mei_event_cb(struct mei_cl_device *device, u32 events,
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void *context)
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{
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struct nfc_mei_phy *phy = context;
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@@ -125,7 +312,7 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
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if (!skb)
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return;
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reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
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reply_size = mei_nfc_recv(phy, skb->data, MEI_NFC_MAX_READ);
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if (reply_size < MEI_NFC_HEADER_SIZE) {
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kfree_skb(skb);
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return;
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@@ -139,7 +326,61 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
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nfc_hci_recv_frame(phy->hdev, skb);
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}
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}
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EXPORT_SYMBOL_GPL(nfc_mei_event_cb);
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static int nfc_mei_phy_enable(void *phy_id)
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{
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||||
int r;
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struct nfc_mei_phy *phy = phy_id;
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pr_info("%s\n", __func__);
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||||
|
||||
if (phy->powered == 1)
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return 0;
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|
||||
r = mei_cl_enable_device(phy->device);
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||||
if (r < 0) {
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||||
pr_err("Could not enable device %d\n", r);
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||||
return r;
|
||||
}
|
||||
|
||||
r = mei_nfc_if_version(phy);
|
||||
if (r < 0) {
|
||||
pr_err("Could not enable device %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
r = mei_nfc_connect(phy);
|
||||
if (r < 0) {
|
||||
pr_err("Could not connect to device %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy);
|
||||
if (r) {
|
||||
pr_err("Event cb registration failed %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
phy->powered = 1;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
phy->powered = 0;
|
||||
mei_cl_disable_device(phy->device);
|
||||
return r;
|
||||
}
|
||||
|
||||
static void nfc_mei_phy_disable(void *phy_id)
|
||||
{
|
||||
struct nfc_mei_phy *phy = phy_id;
|
||||
|
||||
pr_info("%s\n", __func__);
|
||||
|
||||
mei_cl_disable_device(phy->device);
|
||||
|
||||
phy->powered = 0;
|
||||
}
|
||||
|
||||
struct nfc_phy_ops mei_phy_ops = {
|
||||
.write = nfc_mei_phy_write,
|
||||
@@ -157,6 +398,7 @@ struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device)
|
||||
return NULL;
|
||||
|
||||
phy->device = device;
|
||||
init_waitqueue_head(&phy->send_wq);
|
||||
mei_cl_set_drvdata(device, phy);
|
||||
|
||||
return phy;
|
||||
@@ -165,6 +407,7 @@ EXPORT_SYMBOL_GPL(nfc_mei_phy_alloc);
|
||||
|
||||
void nfc_mei_phy_free(struct nfc_mei_phy *phy)
|
||||
{
|
||||
mei_cl_disable_device(phy->device);
|
||||
kfree(phy);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfc_mei_phy_free);
|
||||
|
||||
@@ -3,27 +3,49 @@
|
||||
|
||||
#include <linux/mei_cl_bus.h>
|
||||
#include <net/nfc/hci.h>
|
||||
#include <linux/uuid.h>
|
||||
|
||||
#define MEI_NFC_UUID UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \
|
||||
0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
|
||||
#define MEI_NFC_HEADER_SIZE 10
|
||||
#define MEI_NFC_MAX_HCI_PAYLOAD 300
|
||||
|
||||
/**
|
||||
* struct nfc_mei_phy
|
||||
*
|
||||
* @device: mei device
|
||||
* @hdev: nfc hci device
|
||||
|
||||
* @send_wq: send completion wait queue
|
||||
* @fw_ivn: NFC Interface Version Number
|
||||
* @vendor_id: NFC manufacturer ID
|
||||
* @radio_type: NFC radio type
|
||||
* @reserved: reserved for alignment
|
||||
* @req_id: message counter
|
||||
* @recv_req_id: reception message counter
|
||||
* @powered: the device is in powered state
|
||||
* @hard_fault: < 0 if hardware error occurred
|
||||
* and prevents normal operation.
|
||||
*/
|
||||
struct nfc_mei_phy {
|
||||
struct mei_cl_device *device;
|
||||
struct nfc_hci_dev *hdev;
|
||||
|
||||
int powered;
|
||||
wait_queue_head_t send_wq;
|
||||
u8 fw_ivn;
|
||||
u8 vendor_id;
|
||||
u8 radio_type;
|
||||
u8 reserved;
|
||||
|
||||
int hard_fault; /*
|
||||
* < 0 if hardware error occured
|
||||
* and prevents normal operation.
|
||||
*/
|
||||
u16 req_id;
|
||||
u16 recv_req_id;
|
||||
|
||||
int powered;
|
||||
int hard_fault;
|
||||
};
|
||||
|
||||
extern struct nfc_phy_ops mei_phy_ops;
|
||||
|
||||
int nfc_mei_phy_enable(void *phy_id);
|
||||
void nfc_mei_phy_disable(void *phy_id);
|
||||
void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context);
|
||||
struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device);
|
||||
void nfc_mei_phy_free(struct nfc_mei_phy *phy);
|
||||
|
||||
|
||||
@@ -67,7 +67,7 @@ static int microread_mei_remove(struct mei_cl_device *device)
|
||||
}
|
||||
|
||||
static struct mei_cl_device_id microread_mei_tbl[] = {
|
||||
{ MICROREAD_DRIVER_NAME },
|
||||
{ MICROREAD_DRIVER_NAME, MEI_NFC_UUID},
|
||||
|
||||
/* required last entry */
|
||||
{ }
|
||||
|
||||
@@ -67,7 +67,7 @@ static int pn544_mei_remove(struct mei_cl_device *device)
|
||||
}
|
||||
|
||||
static struct mei_cl_device_id pn544_mei_tbl[] = {
|
||||
{ PN544_DRIVER_NAME },
|
||||
{ PN544_DRIVER_NAME, MEI_NFC_UUID},
|
||||
|
||||
/* required last entry */
|
||||
{ }
|
||||
|
||||
Reference in New Issue
Block a user