From: Pawel Laszczak <pawell@cadence.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<linux-usb@vger.kernel.org>, Felipe Balbi <balbi@kernel.org>,
<linux-kernel@vger.kernel.org>, <ltyrala@cadence.com>,
<adouglas@cadence.com>, <pawell@cadence.com>
Subject: [PATCH 29/31] usb: usbssp: added support for LPM.
Date: Thu, 19 Jul 2018 18:58:02 +0100 [thread overview]
Message-ID: <1532023084-28083-30-git-send-email-pawell@cadence.com> (raw)
In-Reply-To: <1532023084-28083-1-git-send-email-pawell@cadence.com>
Patch implements LPM functionality for port working in HS mode.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
---
drivers/usb/usbssp/gadget-port.c | 2 +-
drivers/usb/usbssp/gadget-ring.c | 11 +++++++
drivers/usb/usbssp/gadget.c | 49 ++++++++++++++++++++++++++++++++
drivers/usb/usbssp/gadget.h | 4 +++
4 files changed, 65 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/usbssp/gadget-port.c b/drivers/usb/usbssp/gadget-port.c
index 2c4d28070cab..05a4eb2fd8bf 100644
--- a/drivers/usb/usbssp/gadget-port.c
+++ b/drivers/usb/usbssp/gadget-port.c
@@ -10,9 +10,9 @@
* Origin: Copyright (C) 2008 Intel Corp
*/
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
-
#include "gadget-trace.h"
#include "gadget.h"
diff --git a/drivers/usb/usbssp/gadget-ring.c b/drivers/usb/usbssp/gadget-ring.c
index e7afd185d4ad..4abc2293f249 100644
--- a/drivers/usb/usbssp/gadget-ring.c
+++ b/drivers/usb/usbssp/gadget-ring.c
@@ -3018,6 +3018,17 @@ int usbssp_queue_ctrl_tx(struct usbssp_udc *usbssp_data,
USB_STATE_CONFIGURED);
}
+ if (usbssp_data->bos_event_detected) {
+ usbssp_data->bos_event_detected = 0;
+ usb_gadget_unmap_request_by_dev(usbssp_data->dev,
+ &req_priv->request,
+ dep->direction);
+ usbssp_set_usb2_hardware_lpm(usbssp_data,
+ &req_priv->request, 1);
+ ret = usb_gadget_map_request_by_dev(usbssp_data->dev,
+ &req_priv->request, dep->direction);
+ }
+
/* 1 TRB for data, 1 for status */
if (usbssp_data->three_stage_setup)
num_trbs = 2;
diff --git a/drivers/usb/usbssp/gadget.c b/drivers/usb/usbssp/gadget.c
index 378828d10a2e..029d6313d94c 100644
--- a/drivers/usb/usbssp/gadget.c
+++ b/drivers/usb/usbssp/gadget.c
@@ -1702,6 +1702,55 @@ int usbssp_enable_device(struct usbssp_udc *usbssp_data)
return usbssp_setup_device(usbssp_data, SETUP_CONTEXT_ONLY);
}
+int usbssp_set_usb2_hardware_lpm(struct usbssp_udc *usbssp_data,
+ struct usb_request *req, int enable)
+{
+ __le32 __iomem *pm_addr;
+ u32 pm_val, field;
+ int besl;
+
+ struct usb_ext_cap_descriptor *usb_ext = req->buf + USB_DT_BOS_SIZE;
+
+ if (usbssp_data->port_major_revision >= 3 ||
+ !usbssp_data->hw_lpm_support ||
+ !usbssp_data->gadget.lpm_capable)
+ return -EPERM;
+
+ if (usb_ext->bDescriptorType != USB_DT_DEVICE_CAPABILITY ||
+ usb_ext->bDevCapabilityType != USB_CAP_TYPE_EXT) {
+ return -EPERM;
+ }
+ pm_addr = usbssp_data->usb2_ports + PORTPMSC;
+ pm_val = readl(pm_addr);
+ field = le32_to_cpu(usb_ext->bmAttributes);
+
+ dev_dbg(usbssp_data->dev, "%s port %d USB2 hardware LPM\n",
+ enable ? "enable" : "disable", usbssp_data->devs.port_num);
+
+ if (enable) {
+ /*
+ * If device doesn't have a preferred BESL value use a
+ * default one . See USBSSP_DEFAULT_BESL definition in gadget.h
+ */
+ if ((field & USB_BESL_SUPPORT) &&
+ (field & USB_BESL_BASELINE_VALID))
+ besl = USB_GET_BESL_BASELINE(field);
+ else
+ besl = USBSSP_DEFAULT_BESL;
+
+ pm_val &= ~(PORT_BESL_MASK | PORT_HLE_MASK);
+ pm_val |= PORT_RBESL(besl) | PORT_HLE | 3 /*L1S set to 3*/;
+ pr_err("usbssp_set_usb2_hardware_lpm7 %08x\n", pm_val);
+ writel(pm_val, pm_addr);
+ /* flush write */
+ readl(pm_addr);
+ } else {
+ pm_val &= ~(PORT_HLE | PORT_BESL_MASK | PORT_L1S_MASK);
+ pm_val |= PORT_L1S_HLE0_STALL;
+ writel(pm_val, pm_addr);
+ }
+ return 0;
+}
int usbssp_get_frame(struct usbssp_udc *usbssp_data)
{
diff --git a/drivers/usb/usbssp/gadget.h b/drivers/usb/usbssp/gadget.h
index 3a223b89efe6..59d7ef573d96 100644
--- a/drivers/usb/usbssp/gadget.h
+++ b/drivers/usb/usbssp/gadget.h
@@ -1756,6 +1756,10 @@ int usbssp_alloc_dev(struct usbssp_udc *usbssp_data);
void usbssp_free_dev(struct usbssp_udc *usbssp_data);
int usbssp_address_device(struct usbssp_udc *usbssp_data);
int usbssp_enable_device(struct usbssp_udc *usbssp_data);
+
+int usbssp_set_usb2_hardware_lpm(struct usbssp_udc *usbsssp_data,
+ struct usb_request *req, int enable);
+
/* USBSSP ring, segment, TRB, and TD functions */
dma_addr_t usbssp_trb_virt_to_dma(struct usbssp_segment *seg,
union usbssp_trb *trb);
--
2.17.1
next prev parent reply other threads:[~2018-07-19 18:00 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-19 17:57 [PATCH 00/31] Introduced new Cadence USBSSP DRD Driver Pawel Laszczak
2018-07-19 17:57 ` [PATCH 01/31] usb: usbssp: Defined register maps and other useful structures Pawel Laszczak
2018-07-19 17:57 ` [PATCH 02/31] usb: usbssp: Added some decoding functions Pawel Laszczak
2018-09-10 18:18 ` Greg Kroah-Hartman
2018-09-11 5:48 ` Felipe Balbi
2018-09-11 8:12 ` Greg Kroah-Hartman
2018-09-11 9:01 ` Pawel Laszczak
2018-07-19 17:57 ` [PATCH 03/31] usb: usbssp: Add trace events used in driver Pawel Laszczak
2018-07-19 17:57 ` [PATCH 04/31] usb: usbssp: Added USBSSP platform driver Pawel Laszczak
2018-08-01 12:24 ` Roger Quadros
2018-08-02 6:25 ` Pawel Laszczak
2018-08-02 13:28 ` Roger Quadros
2018-07-19 17:57 ` [PATCH 05/31] usb: usbssp: Added first part of initialization sequence Pawel Laszczak
2018-08-03 10:17 ` Roger Quadros
2018-08-06 8:57 ` Pawel Laszczak
2018-08-06 10:33 ` Roger Quadros
2018-08-06 12:03 ` Pawel Laszczak
2018-07-19 17:57 ` [PATCH 06/31] usb: usbssp: added template functions used by upper layer Pawel Laszczak
2018-08-03 10:42 ` Roger Quadros
2018-08-04 6:37 ` Pawel Laszczak
2018-08-06 8:57 ` Roger Quadros
2018-08-06 11:40 ` Pawel Laszczak
2018-07-19 17:57 ` [PATCH 07/31] usb: usbssp: Initialization - added usbssp_mem_init Pawel Laszczak
2018-07-19 17:57 ` [PATCH 08/31] usb: usbssp: Added ring and segment handling functions Pawel Laszczak
2018-07-19 17:57 ` [PATCH 09/31] usb: usbssp: add implementation of usbssp_mem_cleanup Pawel Laszczak
2018-07-19 17:57 ` [PATCH 10/31] usb: usbssp: added usbssp_trb_in_td function Pawel Laszczak
2018-07-19 17:57 ` [PATCH 11/31] usb: usbssp: added function for stopping driver Pawel Laszczak
2018-07-19 17:57 ` [PATCH 12/31] usb: usbssp: added functions for queuing commands Pawel Laszczak
2018-07-19 17:57 ` [PATCH 13/31] usb: usbssp: addec procedure for handlin Port Status Change events Pawel Laszczak
2018-07-19 17:57 ` [PATCH 14/31] usb: usbssp: added procedure handling command completion events Pawel Laszczak
2018-07-19 17:57 ` [PATCH 15/31] usb: usbssp: added device controller error, transfer and SETUP completion event Pawel Laszczak
2018-07-19 17:57 ` [PATCH 16/31] usb: usbssp: added connect/disconnect procedures Pawel Laszczak
2018-07-19 17:57 ` [PATCH 17/31] usb: usbssp: added implementation of usbssp_halt_endpoint function Pawel Laszczak
2018-07-19 17:57 ` [PATCH 18/31] usb: usbssp: added handling of Port Reset event Pawel Laszczak
2018-07-19 17:57 ` [PATCH 19/31] usb: usbssp: added support for USB enumeration process Pawel Laszczak
2018-07-19 17:57 ` [PATCH 20/31] usb: usbssp: added queuing procedure for control transfer Pawel Laszczak
2018-07-19 17:57 ` [PATCH 21/31] usb: usbssp: added queuing procedure for BULK and INT transfer Pawel Laszczak
2018-07-19 17:57 ` [PATCH 22/31] usb: usbssp: added procedure removing request from transfer ring Pawel Laszczak
2018-07-19 17:57 ` [PATCH 23/31] usb: usbssp: added implementation of transfer events Pawel Laszczak
2018-07-19 17:57 ` [PATCH 24/31] usb: usbssp: added detecting command timeout Pawel Laszczak
2018-07-19 17:57 ` [PATCH 25/31] usb: usbssp: added implementation of usbssp interface Pawel Laszczak
2018-07-19 17:57 ` [PATCH 26/31] usb: usbssp: added endpoint configuration functionality Pawel Laszczak
2018-07-19 17:58 ` [PATCH 27/31] usb: usbssp: implements usbssp_gadget_ep_enable function Pawel Laszczak
2018-07-19 17:58 ` [PATCH 28/31] usb: usbssp: implemented usbssp_gadget_ep_disable function Pawel Laszczak
2018-07-19 17:58 ` Pawel Laszczak [this message]
2018-07-19 17:58 ` [PATCH 30/31] usb: usbssp: added support for TEST_MODE Pawel Laszczak
2018-07-19 17:58 ` [PATCH 31/31] usb: usbssp: add pci to platform driver wrapper Pawel Laszczak
2018-08-01 11:27 ` [PATCH 00/31] Introduced new Cadence USBSSP DRD Driver Roger Quadros
2018-08-02 4:26 ` Pawel Laszczak
2018-08-02 13:24 ` Roger Quadros
2018-09-10 18:21 ` Greg Kroah-Hartman
2018-08-17 21:05 ` Bin Liu
2018-08-21 14:50 ` Pawel Laszczak
2018-09-10 18:20 ` Greg Kroah-Hartman
2018-09-10 18:16 ` Greg Kroah-Hartman
-- strict thread matches above, loose matches on Subject: below --
2018-07-12 5:46 Pawel Laszczak
2018-07-12 5:47 ` [PATCH 29/31] usb: usbssp: added support for LPM Pawel Laszczak
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