From: Sevak Arakelyan <SEVAK.ARAKELYAN@synopsys.com>
To: John Youn <John.Youn@synopsys.com>,
Felipe Balbi <balbi@kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: Sevak Arakelyan <SEVAK.ARAKELYAN@synopsys.com>
Subject: [PATCH 2/9] usb: dwc2: Add core parameters for LPM support
Date: Fri, 28 Apr 2017 12:48:00 +0400 [thread overview]
Message-ID: <c61cd7fb0e7705c5756f2267dec77c467fcdc8a6.1493369198.git.sevaka@synopsys.com> (raw)
In-Reply-To: <cover.1493369198.git.sevaka@synopsys.com>
Add lpm, lpm_clock_gating, besl, hird_threshold_en and hird_threshold
core parameters. These will indicate LPM and LPM Errata support
as well as chosen L1 sleeping mode for the core and PHY.
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
---
drivers/usb/dwc2/core.h | 20 ++++++++++++++++++++
drivers/usb/dwc2/debugfs.c | 5 +++++
drivers/usb/dwc2/params.c | 13 +++++++++++++
3 files changed, 38 insertions(+)
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 8367d4f985c1..13e0cb643678 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -423,6 +423,19 @@ enum dwc2_ep0_state {
* needed.
* 0 - No (default)
* 1 - Yes
+ * @lpm: Enable LPM support.
+ * 0 - No (default)
+ * 1 - Yes
+ * @lpm_clock_gating: Enable core PHY clock gating.
+ * 0 - No (default)
+ * 1 - Yes
+ * @besl: Enable LPM Errata support.
+ * 0 - No (default)
+ * 1 - Yes
+ * @hird_threshold_en: HIRD or HIRD Threshold enable.
+ * 0 - No (default)
+ * 1 - Yes
+ * @hird_threshold: Value of BESL or HIRD Threshold.
* @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO
* register.
* 0 - Deactivate the transceiver (default)
@@ -481,6 +494,11 @@ struct dwc2_core_params {
bool uframe_sched;
bool external_id_pin_ctl;
bool hibernation;
+ bool lpm;
+ bool lpm_clock_gating;
+ bool besl;
+ bool hird_threshold_en;
+ u8 hird_threshold;
bool activate_stm_fs_transceiver;
u16 max_packet_count;
u32 max_transfer_size;
@@ -585,6 +603,7 @@ struct dwc2_hw_params {
unsigned total_fifo_size:16;
unsigned power_optimized:1;
unsigned utmi_phy_data_width:2;
+ unsigned lpm_mode:1;
u32 snpsid;
u32 dev_ep_dirs;
};
@@ -937,6 +956,7 @@ struct dwc2_hsotg {
/* DWC OTG HW Release versions */
#define DWC2_CORE_REV_2_71a 0x4f54271a
+#define DWC2_CORE_REV_2_80a 0x4f54280a
#define DWC2_CORE_REV_2_90a 0x4f54290a
#define DWC2_CORE_REV_2_91a 0x4f54291a
#define DWC2_CORE_REV_2_92a 0x4f54292a
diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c
index 794b959a7c8c..725bd256cd50 100644
--- a/drivers/usb/dwc2/debugfs.c
+++ b/drivers/usb/dwc2/debugfs.c
@@ -763,6 +763,11 @@ static int params_show(struct seq_file *seq, void *v)
print_param(seq, p, uframe_sched);
print_param(seq, p, external_id_pin_ctl);
print_param(seq, p, hibernation);
+ print_param(seq, p, lpm);
+ print_param(seq, p, lpm_clock_gating);
+ print_param(seq, p, besl);
+ print_param(seq, p, hird_threshold_en);
+ print_param(seq, p, hird_threshold);
print_param(seq, p, host_dma);
print_param(seq, p, g_dma);
print_param(seq, p, g_dma_desc);
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 9cd8722f24f6..b9310cd121a3 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -264,6 +264,11 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg)
p->uframe_sched = true;
p->external_id_pin_ctl = false;
p->hibernation = false;
+ p->lpm = false;
+ p->lpm_clock_gating = false;
+ p->besl = false;
+ p->hird_threshold_en = false;
+ p->hird_threshold = 0;
p->max_packet_count = hw->max_packet_count;
p->max_transfer_size = hw->max_transfer_size;
p->ahbcfg = GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT;
@@ -511,6 +516,13 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg)
CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo);
CHECK_BOOL(i2c_enable, hw->i2c_enable);
CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a));
+ CHECK_BOOL(lpm, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_80a));
+ CHECK_BOOL(lpm, hw->lpm_mode);
+ CHECK_BOOL(lpm_clock_gating, hsotg->params.lpm);
+ CHECK_BOOL(besl, hsotg->params.lpm);
+ CHECK_BOOL(besl, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a));
+ CHECK_BOOL(hird_threshold_en, hsotg->params.lpm);
+ CHECK_RANGE(hird_threshold, 0, hsotg->params.besl ? 12 : 7, 0);
CHECK_RANGE(max_packet_count,
15, hw->max_packet_count,
hw->max_packet_count);
@@ -689,6 +701,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
GHWCFG3_DFIFO_DEPTH_SHIFT;
+ hw->lpm_mode = !!(hwcfg3 & GHWCFG3_OTG_LPM_EN);
/* hwcfg4 */
hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
--
2.11.0
next prev parent reply other threads:[~2017-04-28 8:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-28 8:46 [PATCH 0/9] usb: dwc2: gadget: Add LPM functionality Sevak Arakelyan
2017-04-28 8:47 ` [PATCH 1/9] usb: dwc2: Fix GLPMCFG... definitions Sevak Arakelyan
2017-04-28 8:48 ` Sevak Arakelyan [this message]
2017-04-28 8:48 ` [PATCH 3/9] usb: dwc2: gadget: Add functionality to exit from LPM L1 state Sevak Arakelyan
2017-04-28 8:48 ` [PATCH 4/9] usb: dwc2: gadget: LPM interrupt handler Sevak Arakelyan
2017-04-28 8:55 ` [PATCH 5/9] usb: dwc2: Enable LPM Transaction Received interrupt Sevak Arakelyan
2017-04-28 8:55 ` [PATCH 6/9] usb: dwc2: gadget: Configure the core to enable LPM Sevak Arakelyan
2017-04-28 8:55 ` [PATCH 7/9] [HSLPM] usb: gadget: composite: Exclude SS Dev Cap Desc Sevak Arakelyan
2017-04-28 8:55 ` [PATCH 8/9] [HSLPM] usb: gadget: Allow a non-SuperSpeed gadget to support LPM Sevak Arakelyan
2017-04-28 8:56 ` [PATCH 9/9] [HSLPM] usb: dwc2: Enable LPM Sevak Arakelyan
2017-04-28 9:24 ` Greg Kroah-Hartman
2017-06-02 8:20 ` Felipe Balbi
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