diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-04 16:21:47 +0100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-04 16:21:47 +0100 |
commit | 5c904c66ed4e86c31ac7c033b64274cebed04e0e (patch) | |
tree | 769d366c5e61ffa45d5d8a99c61ae9d5ea39a0a0 /drivers/phy | |
parent | Merge tag 'staging-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
parent | comedi: dt9812: fix DMA buffers on stack (diff) | |
download | linux-5c904c66ed4e86c31ac7c033b64274cebed04e0e.tar.xz linux-5c904c66ed4e86c31ac7c033b64274cebed04e0e.zip |
Merge tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char and misc and other tiny driver subsystem
updates for 5.16-rc1.
Loads of things in here, all of which have been in linux-next for a
while with no reported problems (except for one called out below.)
Included are:
- habanana labs driver updates, including dma_buf usage, reviewed and
acked by the dma_buf maintainers
- iio driver update (going through this tree not staging as they
really do not belong going through that tree anymore)
- counter driver updates
- hwmon driver updates that the counter drivers needed, acked by the
hwmon maintainer
- xillybus driver updates
- binder driver updates
- extcon driver updates
- dma_buf module namespaces added (will cause a build error in arm64
for allmodconfig, but that change is on its way through the drm
tree)
- lkdtm driver updates
- pvpanic driver updates
- phy driver updates
- virt acrn and nitr_enclaves driver updates
- smaller char and misc driver updates"
* tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (386 commits)
comedi: dt9812: fix DMA buffers on stack
comedi: ni_usb6501: fix NULL-deref in command paths
arm64: errata: Enable TRBE workaround for write to out-of-range address
arm64: errata: Enable workaround for TRBE overwrite in FILL mode
coresight: trbe: Work around write to out of range
coresight: trbe: Make sure we have enough space
coresight: trbe: Add a helper to determine the minimum buffer size
coresight: trbe: Workaround TRBE errata overwrite in FILL mode
coresight: trbe: Add infrastructure for Errata handling
coresight: trbe: Allow driver to choose a different alignment
coresight: trbe: Decouple buffer base from the hardware base
coresight: trbe: Add a helper to pad a given buffer area
coresight: trbe: Add a helper to calculate the trace generated
coresight: trbe: Defer the probe on offline CPUs
coresight: trbe: Fix incorrect access of the sink specific data
coresight: etm4x: Add ETM PID for Kryo-5XX
coresight: trbe: Prohibit trace before disabling TRBE
coresight: trbe: End the AUX handle on truncation
coresight: trbe: Do not truncate buffer on IRQ
coresight: trbe: Fix handling of spurious interrupts
...
Diffstat (limited to 'drivers/phy')
-rw-r--r-- | drivers/phy/broadcom/Kconfig | 4 | ||||
-rw-r--r-- | drivers/phy/cadence/phy-cadence-torrent.c | 316 | ||||
-rw-r--r-- | drivers/phy/hisilicon/Kconfig | 10 | ||||
-rw-r--r-- | drivers/phy/hisilicon/Makefile | 1 | ||||
-rw-r--r-- | drivers/phy/hisilicon/phy-hi3670-pcie.c | 845 | ||||
-rw-r--r-- | drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 10 | ||||
-rw-r--r-- | drivers/phy/microchip/sparx5_serdes.c | 4 | ||||
-rw-r--r-- | drivers/phy/qualcomm/phy-qcom-qmp.c | 157 | ||||
-rw-r--r-- | drivers/phy/qualcomm/phy-qcom-qmp.h | 2 | ||||
-rw-r--r-- | drivers/phy/qualcomm/phy-qcom-qusb2.c | 21 | ||||
-rw-r--r-- | drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 2 | ||||
-rw-r--r-- | drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 11 | ||||
-rw-r--r-- | drivers/phy/samsung/Kconfig | 16 | ||||
-rw-r--r-- | drivers/phy/st/phy-stm32-usbphyc.c | 203 | ||||
-rw-r--r-- | drivers/phy/ti/phy-gmii-sel.c | 2 |
15 files changed, 1532 insertions, 72 deletions
diff --git a/drivers/phy/broadcom/Kconfig b/drivers/phy/broadcom/Kconfig index fd92b73b7109..f81e23742079 100644 --- a/drivers/phy/broadcom/Kconfig +++ b/drivers/phy/broadcom/Kconfig @@ -2,6 +2,8 @@ # # Phy drivers for Broadcom platforms # +menu "PHY drivers for Broadcom platforms" + config PHY_BCM63XX_USBH tristate "BCM63xx USBH PHY driver" depends on BMIPS_GENERIC || COMPILE_TEST @@ -112,3 +114,5 @@ config PHY_BCM_SR_PCIE help Enable this to support the Broadcom Stingray PCIe PHY If unsure, say N. + +endmenu diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c index 415ace64adc5..5786166133d3 100644 --- a/drivers/phy/cadence/phy-cadence-torrent.c +++ b/drivers/phy/cadence/phy-cadence-torrent.c @@ -235,8 +235,12 @@ #define PHY_PMA_CMN_CTRL2 0x0001U #define PHY_PMA_PLL_RAW_CTRL 0x0003U +#define CDNS_TORRENT_OUTPUT_CLOCKS 3 + static const char * const clk_names[] = { [CDNS_TORRENT_REFCLK_DRIVER] = "refclk-driver", + [CDNS_TORRENT_DERIVED_REFCLK] = "refclk-der", + [CDNS_TORRENT_RECEIVED_REFCLK] = "refclk-rec", }; static const struct reg_field phy_pll_cfg = @@ -259,10 +263,12 @@ static const struct reg_field phy_pcs_iso_link_ctrl_1 = static const struct reg_field phy_pipe_cmn_ctrl1_0 = REG_FIELD(PHY_PIPE_CMN_CTRL1, 0, 0); -#define REFCLK_OUT_NUM_CMN_CONFIG 5 +static const struct reg_field cmn_cdiag_refclk_ovrd_4 = + REG_FIELD(CMN_CDIAG_REFCLK_OVRD, 4, 4); + +#define REFCLK_OUT_NUM_CMN_CONFIG 4 enum cdns_torrent_refclk_out_cmn { - CMN_CDIAG_REFCLK_OVRD_4, CMN_CDIAG_REFCLK_DRV0_CTRL_1, CMN_CDIAG_REFCLK_DRV0_CTRL_4, CMN_CDIAG_REFCLK_DRV0_CTRL_5, @@ -270,13 +276,19 @@ enum cdns_torrent_refclk_out_cmn { }; static const struct reg_field refclk_out_cmn_cfg[] = { - [CMN_CDIAG_REFCLK_OVRD_4] = REG_FIELD(CMN_CDIAG_REFCLK_OVRD, 4, 4), [CMN_CDIAG_REFCLK_DRV0_CTRL_1] = REG_FIELD(CMN_CDIAG_REFCLK_DRV0_CTRL, 1, 1), [CMN_CDIAG_REFCLK_DRV0_CTRL_4] = REG_FIELD(CMN_CDIAG_REFCLK_DRV0_CTRL, 4, 4), [CMN_CDIAG_REFCLK_DRV0_CTRL_5] = REG_FIELD(CMN_CDIAG_REFCLK_DRV0_CTRL, 5, 5), [CMN_CDIAG_REFCLK_DRV0_CTRL_6] = REG_FIELD(CMN_CDIAG_REFCLK_DRV0_CTRL, 6, 6), }; +static const int refclk_driver_parent_index[] = { + CDNS_TORRENT_DERIVED_REFCLK, + CDNS_TORRENT_RECEIVED_REFCLK +}; + +static u32 cdns_torrent_refclk_driver_mux_table[] = { 1, 0 }; + enum cdns_torrent_phy_type { TYPE_NONE, TYPE_DP, @@ -328,13 +340,14 @@ struct cdns_torrent_phy { struct regmap *regmap_phy_pcs_lane_cdb[MAX_NUM_LANES]; struct regmap *regmap_dptx_phy_reg; struct regmap_field *phy_pll_cfg; + struct regmap_field *phy_pipe_cmn_ctrl1_0; + struct regmap_field *cmn_cdiag_refclk_ovrd_4; struct regmap_field *phy_pma_cmn_ctrl_1; struct regmap_field *phy_pma_cmn_ctrl_2; struct regmap_field *phy_pma_pll_raw_ctrl; struct regmap_field *phy_reset_ctrl; struct regmap_field *phy_pcs_iso_link_ctrl_1[MAX_NUM_LANES]; - struct clk *clks[CDNS_TORRENT_REFCLK_DRIVER + 1]; - struct clk_onecell_data clk_data; + struct clk_hw_onecell_data *clk_hw_data; }; enum phy_powerstate { @@ -344,16 +357,35 @@ enum phy_powerstate { POWERSTATE_A3 = 3, }; +struct cdns_torrent_refclk_driver { + struct clk_hw hw; + struct regmap_field *cmn_fields[REFCLK_OUT_NUM_CMN_CONFIG]; + struct clk_init_data clk_data; +}; + +#define to_cdns_torrent_refclk_driver(_hw) \ + container_of(_hw, struct cdns_torrent_refclk_driver, hw) + struct cdns_torrent_derived_refclk { struct clk_hw hw; struct regmap_field *phy_pipe_cmn_ctrl1_0; - struct regmap_field *cmn_fields[REFCLK_OUT_NUM_CMN_CONFIG]; + struct regmap_field *cmn_cdiag_refclk_ovrd_4; struct clk_init_data clk_data; }; #define to_cdns_torrent_derived_refclk(_hw) \ container_of(_hw, struct cdns_torrent_derived_refclk, hw) +struct cdns_torrent_received_refclk { + struct clk_hw hw; + struct regmap_field *phy_pipe_cmn_ctrl1_0; + struct regmap_field *cmn_cdiag_refclk_ovrd_4; + struct clk_init_data clk_data; +}; + +#define to_cdns_torrent_received_refclk(_hw) \ + container_of(_hw, struct cdns_torrent_received_refclk, hw) + struct cdns_reg_pairs { u32 val; u32 off; @@ -1617,11 +1649,7 @@ static int cdns_torrent_derived_refclk_enable(struct clk_hw *hw) { struct cdns_torrent_derived_refclk *derived_refclk = to_cdns_torrent_derived_refclk(hw); - regmap_field_write(derived_refclk->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_6], 0); - regmap_field_write(derived_refclk->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_4], 1); - regmap_field_write(derived_refclk->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_5], 1); - regmap_field_write(derived_refclk->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_1], 0); - regmap_field_write(derived_refclk->cmn_fields[CMN_CDIAG_REFCLK_OVRD_4], 1); + regmap_field_write(derived_refclk->cmn_cdiag_refclk_ovrd_4, 1); regmap_field_write(derived_refclk->phy_pipe_cmn_ctrl1_0, 1); return 0; @@ -1632,6 +1660,7 @@ static void cdns_torrent_derived_refclk_disable(struct clk_hw *hw) struct cdns_torrent_derived_refclk *derived_refclk = to_cdns_torrent_derived_refclk(hw); regmap_field_write(derived_refclk->phy_pipe_cmn_ctrl1_0, 0); + regmap_field_write(derived_refclk->cmn_cdiag_refclk_ovrd_4, 0); } static int cdns_torrent_derived_refclk_is_enabled(struct clk_hw *hw) @@ -1639,7 +1668,7 @@ static int cdns_torrent_derived_refclk_is_enabled(struct clk_hw *hw) struct cdns_torrent_derived_refclk *derived_refclk = to_cdns_torrent_derived_refclk(hw); int val; - regmap_field_read(derived_refclk->phy_pipe_cmn_ctrl1_0, &val); + regmap_field_read(derived_refclk->cmn_cdiag_refclk_ovrd_4, &val); return !!val; } @@ -1654,20 +1683,19 @@ static int cdns_torrent_derived_refclk_register(struct cdns_torrent_phy *cdns_ph { struct cdns_torrent_derived_refclk *derived_refclk; struct device *dev = cdns_phy->dev; - struct regmap_field *field; struct clk_init_data *init; const char *parent_name; - struct regmap *regmap; char clk_name[100]; + struct clk_hw *hw; struct clk *clk; - int i; + int ret; derived_refclk = devm_kzalloc(dev, sizeof(*derived_refclk), GFP_KERNEL); if (!derived_refclk) return -ENOMEM; snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev), - clk_names[CDNS_TORRENT_REFCLK_DRIVER]); + clk_names[CDNS_TORRENT_DERIVED_REFCLK]); clk = devm_clk_get_optional(dev, "phy_en_refclk"); if (IS_ERR(clk)) { @@ -1686,31 +1714,222 @@ static int cdns_torrent_derived_refclk_register(struct cdns_torrent_phy *cdns_ph init->flags = 0; init->name = clk_name; - regmap = cdns_phy->regmap_phy_pcs_common_cdb; - field = devm_regmap_field_alloc(dev, regmap, phy_pipe_cmn_ctrl1_0); - if (IS_ERR(field)) { - dev_err(dev, "phy_pipe_cmn_ctrl1_0 reg field init failed\n"); - return PTR_ERR(field); + derived_refclk->phy_pipe_cmn_ctrl1_0 = cdns_phy->phy_pipe_cmn_ctrl1_0; + derived_refclk->cmn_cdiag_refclk_ovrd_4 = cdns_phy->cmn_cdiag_refclk_ovrd_4; + + derived_refclk->hw.init = init; + + hw = &derived_refclk->hw; + ret = devm_clk_hw_register(dev, hw); + if (ret) + return ret; + + cdns_phy->clk_hw_data->hws[CDNS_TORRENT_DERIVED_REFCLK] = hw; + + return 0; +} + +static int cdns_torrent_received_refclk_enable(struct clk_hw *hw) +{ + struct cdns_torrent_received_refclk *received_refclk = to_cdns_torrent_received_refclk(hw); + + regmap_field_write(received_refclk->phy_pipe_cmn_ctrl1_0, 1); + + return 0; +} + +static void cdns_torrent_received_refclk_disable(struct clk_hw *hw) +{ + struct cdns_torrent_received_refclk *received_refclk = to_cdns_torrent_received_refclk(hw); + + regmap_field_write(received_refclk->phy_pipe_cmn_ctrl1_0, 0); +} + +static int cdns_torrent_received_refclk_is_enabled(struct clk_hw *hw) +{ + struct cdns_torrent_received_refclk *received_refclk = to_cdns_torrent_received_refclk(hw); + int val, cmn_val; + + regmap_field_read(received_refclk->phy_pipe_cmn_ctrl1_0, &val); + regmap_field_read(received_refclk->cmn_cdiag_refclk_ovrd_4, &cmn_val); + + return val && !cmn_val; +} + +static const struct clk_ops cdns_torrent_received_refclk_ops = { + .enable = cdns_torrent_received_refclk_enable, + .disable = cdns_torrent_received_refclk_disable, + .is_enabled = cdns_torrent_received_refclk_is_enabled, +}; + +static int cdns_torrent_received_refclk_register(struct cdns_torrent_phy *cdns_phy) +{ + struct cdns_torrent_received_refclk *received_refclk; + struct device *dev = cdns_phy->dev; + struct clk_init_data *init; + const char *parent_name; + char clk_name[100]; + struct clk_hw *hw; + struct clk *clk; + int ret; + + received_refclk = devm_kzalloc(dev, sizeof(*received_refclk), GFP_KERNEL); + if (!received_refclk) + return -ENOMEM; + + snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev), + clk_names[CDNS_TORRENT_RECEIVED_REFCLK]); + + clk = devm_clk_get_optional(dev, "phy_en_refclk"); + if (IS_ERR(clk)) { + dev_err(dev, "No parent clock for received_refclk\n"); + return PTR_ERR(clk); + } + + init = &received_refclk->clk_data; + + if (clk) { + parent_name = __clk_get_name(clk); + init->parent_names = &parent_name; + init->num_parents = 1; } - derived_refclk->phy_pipe_cmn_ctrl1_0 = field; + init->ops = &cdns_torrent_received_refclk_ops; + init->flags = 0; + init->name = clk_name; + + received_refclk->phy_pipe_cmn_ctrl1_0 = cdns_phy->phy_pipe_cmn_ctrl1_0; + received_refclk->cmn_cdiag_refclk_ovrd_4 = cdns_phy->cmn_cdiag_refclk_ovrd_4; + + received_refclk->hw.init = init; + + hw = &received_refclk->hw; + ret = devm_clk_hw_register(dev, hw); + if (ret) + return ret; + + cdns_phy->clk_hw_data->hws[CDNS_TORRENT_RECEIVED_REFCLK] = hw; + + return 0; +} + +static int cdns_torrent_refclk_driver_enable(struct clk_hw *hw) +{ + struct cdns_torrent_refclk_driver *refclk_driver = to_cdns_torrent_refclk_driver(hw); + + regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_6], 0); + regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_5], 1); + regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_1], 0); + + return 0; +} + +static void cdns_torrent_refclk_driver_disable(struct clk_hw *hw) +{ + struct cdns_torrent_refclk_driver *refclk_driver = to_cdns_torrent_refclk_driver(hw); + + regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_1], 1); +} + +static int cdns_torrent_refclk_driver_is_enabled(struct clk_hw *hw) +{ + struct cdns_torrent_refclk_driver *refclk_driver = to_cdns_torrent_refclk_driver(hw); + int val; + + regmap_field_read(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_1], &val); + + return !val; +} + +static u8 cdns_torrent_refclk_driver_get_parent(struct clk_hw *hw) +{ + struct cdns_torrent_refclk_driver *refclk_driver = to_cdns_torrent_refclk_driver(hw); + unsigned int val; + + regmap_field_read(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_4], &val); + return clk_mux_val_to_index(hw, cdns_torrent_refclk_driver_mux_table, 0, val); +} + +static int cdns_torrent_refclk_driver_set_parent(struct clk_hw *hw, u8 index) +{ + struct cdns_torrent_refclk_driver *refclk_driver = to_cdns_torrent_refclk_driver(hw); + unsigned int val; + + val = cdns_torrent_refclk_driver_mux_table[index]; + return regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_4], val); +} + +static const struct clk_ops cdns_torrent_refclk_driver_ops = { + .enable = cdns_torrent_refclk_driver_enable, + .disable = cdns_torrent_refclk_driver_disable, + .is_enabled = cdns_torrent_refclk_driver_is_enabled, + .set_parent = cdns_torrent_refclk_driver_set_parent, + .get_parent = cdns_torrent_refclk_driver_get_parent, +}; + +static int cdns_torrent_refclk_driver_register(struct cdns_torrent_phy *cdns_phy) +{ + struct cdns_torrent_refclk_driver *refclk_driver; + struct device *dev = cdns_phy->dev; + struct regmap_field *field; + struct clk_init_data *init; + const char **parent_names; + unsigned int num_parents; + struct regmap *regmap; + char clk_name[100]; + struct clk_hw *hw; + int i, ret; + + refclk_driver = devm_kzalloc(dev, sizeof(*refclk_driver), GFP_KERNEL); + if (!refclk_driver) + return -ENOMEM; + + num_parents = ARRAY_SIZE(refclk_driver_parent_index); + parent_names = devm_kzalloc(dev, (sizeof(char *) * num_parents), GFP_KERNEL); + if (!parent_names) + return -ENOMEM; + + for (i = 0; i < num_parents; i++) { + hw = cdns_phy->clk_hw_data->hws[refclk_driver_parent_index[i]]; + if (IS_ERR_OR_NULL(hw)) { + dev_err(dev, "No parent clock for refclk driver clock\n"); + return IS_ERR(hw) ? PTR_ERR(hw) : -ENOENT; + } + parent_names[i] = clk_hw_get_name(hw); + } + + snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev), + clk_names[CDNS_TORRENT_REFCLK_DRIVER]); + + init = &refclk_driver->clk_data; + + init->ops = &cdns_torrent_refclk_driver_ops; + init->flags = CLK_SET_RATE_NO_REPARENT; + init->parent_names = parent_names; + init->num_parents = num_parents; + init->name = clk_name; regmap = cdns_phy->regmap_common_cdb; + for (i = 0; i < REFCLK_OUT_NUM_CMN_CONFIG; i++) { field = devm_regmap_field_alloc(dev, regmap, refclk_out_cmn_cfg[i]); if (IS_ERR(field)) { - dev_err(dev, "CMN reg field init failed\n"); + dev_err(dev, "Refclk driver CMN reg field init failed\n"); return PTR_ERR(field); } - derived_refclk->cmn_fields[i] = field; + refclk_driver->cmn_fields[i] = field; } - derived_refclk->hw.init = init; + /* Enable Derived reference clock as default */ + regmap_field_write(refclk_driver->cmn_fields[CMN_CDIAG_REFCLK_DRV0_CTRL_4], 1); - clk = devm_clk_register(dev, &derived_refclk->hw); - if (IS_ERR(clk)) - return PTR_ERR(clk); + refclk_driver->hw.init = init; + + hw = &refclk_driver->hw; + ret = devm_clk_hw_register(dev, hw); + if (ret) + return ret; - cdns_phy->clks[CDNS_TORRENT_REFCLK_DRIVER] = clk; + cdns_phy->clk_hw_data->hws[CDNS_TORRENT_REFCLK_DRIVER] = hw; return 0; } @@ -1765,6 +1984,22 @@ static int cdns_torrent_regfield_init(struct cdns_torrent_phy *cdns_phy) } cdns_phy->phy_pll_cfg = field; + regmap = cdns_phy->regmap_phy_pcs_common_cdb; + field = devm_regmap_field_alloc(dev, regmap, phy_pipe_cmn_ctrl1_0); + if (IS_ERR(field)) { + dev_err(dev, "phy_pipe_cmn_ctrl1_0 reg field init failed\n"); + return PTR_ERR(field); + } + cdns_phy->phy_pipe_cmn_ctrl1_0 = field; + + regmap = cdns_phy->regmap_common_cdb; + field = devm_regmap_field_alloc(dev, regmap, cmn_cdiag_refclk_ovrd_4); + if (IS_ERR(field)) { + dev_err(dev, "cmn_cdiag_refclk_ovrd_4 reg field init failed\n"); + return PTR_ERR(field); + } + cdns_phy->cmn_cdiag_refclk_ovrd_4 = field; + regmap = cdns_phy->regmap_phy_pma_common_cdb; field = devm_regmap_field_alloc(dev, regmap, phy_pma_cmn_ctrl_1); if (IS_ERR(field)) { @@ -2188,18 +2423,35 @@ static int cdns_torrent_clk_register(struct cdns_torrent_phy *cdns_phy) { struct device *dev = cdns_phy->dev; struct device_node *node = dev->of_node; + struct clk_hw_onecell_data *data; int ret; + data = devm_kzalloc(dev, struct_size(data, hws, CDNS_TORRENT_OUTPUT_CLOCKS), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->num = CDNS_TORRENT_OUTPUT_CLOCKS; + cdns_phy->clk_hw_data = data; + ret = cdns_torrent_derived_refclk_register(cdns_phy); if (ret) { dev_err(dev, "failed to register derived refclk\n"); return ret; } - cdns_phy->clk_data.clks = cdns_phy->clks; - cdns_phy->clk_data.clk_num = CDNS_TORRENT_REFCLK_DRIVER + 1; + ret = cdns_torrent_received_refclk_register(cdns_phy); + if (ret) { + dev_err(dev, "failed to register received refclk\n"); + return ret; + } + + ret = cdns_torrent_refclk_driver_register(cdns_phy); + if (ret) { + dev_err(dev, "failed to register refclk driver\n"); + return ret; + } - ret = of_clk_add_provider(node, of_clk_src_onecell_get, &cdns_phy->clk_data); + ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, data); if (ret) { dev_err(dev, "Failed to add clock provider: %s\n", node->name); return ret; diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index 4d008cfc279c..d3b92c288554 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -33,6 +33,16 @@ config PHY_HI3670_USB To compile this driver as a module, choose M here. +config PHY_HI3670_PCIE + tristate "hi3670 PCIe PHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST + select GENERIC_PHY + select MFD_SYSCON + help + Enable this to support the HiSilicon hi3670 PCIe PHY. + + To compile this driver as a module, choose M here. + config PHY_HISTB_COMBPHY tristate "HiSilicon STB SoCs COMBPHY support" depends on (ARCH_HISI && ARM64) || COMPILE_TEST diff --git a/drivers/phy/hisilicon/Makefile b/drivers/phy/hisilicon/Makefile index 51729868145b..4029d3813b1e 100644 --- a/drivers/phy/hisilicon/Makefile +++ b/drivers/phy/hisilicon/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o obj-$(CONFIG_PHY_HI3660_USB) += phy-hi3660-usb3.o obj-$(CONFIG_PHY_HI3670_USB) += phy-hi3670-usb3.o +obj-$(CONFIG_PHY_HI3670_PCIE) += phy-hi3670-pcie.o obj-$(CONFIG_PHY_HISTB_COMBPHY) += phy-histb-combphy.o obj-$(CONFIG_PHY_HISI_INNO_USB2) += phy-hisi-inno-usb2.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o diff --git a/drivers/phy/hisilicon/phy-hi3670-pcie.c b/drivers/phy/hisilicon/phy-hi3670-pcie.c new file mode 100644 index 000000000000..c64c6679b1b9 --- /dev/null +++ b/drivers/phy/hisilicon/phy-hi3670-pcie.c @@ -0,0 +1,845 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PCIe phy driver for Kirin 970 + * + * Copyright (C) 2017 HiSilicon Electronics Co., Ltd. + * https://www.huawei.com + * Copyright (C) 2021 Huawei Technologies Co., Ltd. + * https://www.huawei.com + * + * Authors: + * Mauro Carvalho Chehab <mchehab+huawei@kernel.org> + * Manivannan Sadhasivam <mani@kernel.org> + * + * Based on: + * https://lore.kernel.org/lkml/4c9d6581478aa966698758c0420933f5defab4dd.1612335031.git.mchehab+huawei@kernel.org/ + */ + +#include <linux/bitfield.h> +#include <linux/clk.h> +#include <linux/gpio.h> +#include <linux/kernel.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/of_gpio.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define AXI_CLK_FREQ 207500000 +#define REF_CLK_FREQ 100000000 + +/* PCIe CTRL registers */ +#define SOC_PCIECTRL_CTRL7_ADDR 0x01c +#define SOC_PCIECTRL_CTRL12_ADDR 0x030 +#define SOC_PCIECTRL_CTRL20_ADDR 0x050 +#define SOC_PCIECTRL_CTRL21_ADDR 0x054 + +#define PCIE_OUTPUT_PULL_BITS GENMASK(3, 0) +#define SOC_PCIECTRL_CTRL20_2P_MEM_CTRL 0x02605550 +#define SOC_PCIECTRL_CTRL21_DEFAULT 0x20000070 +#define PCIE_PULL_UP_SYS_AUX_PWR_DET BIT(10) +#define PCIE_OUTPUT_PULL_DOWN BIT(1) + +/* PCIe PHY registers */ +#define SOC_PCIEPHY_CTRL0_ADDR 0x000 +#define SOC_PCIEPHY_CTRL1_ADDR 0x004 +#define SOC_PCIEPHY_CTRL38_ADDR 0x0098 +#define SOC_PCIEPHY_STATE0_ADDR 0x400 + +#define RAWLANEN_DIG_PCS_XF_TX_OVRD_IN_1 0xc004 +#define SUP_DIG_LVL_OVRD_IN 0x003c +#define LANEN_DIG_ASIC_TX_OVRD_IN_1 0x4008 +#define LANEN_DIG_ASIC_TX_OVRD_IN_2 0x400c + +#define PCIEPHY_RESET_BIT BIT(17) +#define PCIEPHY_PIPE_LINE0_RESET_BIT BIT(19) +#define PCIE_TXDETECT_RX_FAIL BIT(2) +#define PCIE_CLK_SOURCE BIT(8) +#define PCIE_IS_CLOCK_STABLE BIT(19) +#define PCIE_PULL_DOWN_PHY_TEST_POWERDOWN BIT(22) +#define PCIE_DEASSERT_CONTROLLER_PERST BIT(2) + +#define EYEPARAM_NOCFG 0xffffffff +#define EYE_PARM0_MASK GENMASK(8, 6) +#define EYE_PARM1_MASK GENMASK(11, 8) +#define EYE_PARM2_MASK GENMASK(5, 0) +#define EYE_PARM3_MASK GENMASK(12, 7) +#define EYE_PARM4_MASK GENMASK(14, 9) +#define EYE_PARM0_EN BIT(9) +#define EYE_PARM1_EN BIT(12) +#define EYE_PARM2_EN BIT(6) +#define EYE_PARM3_EN BIT(13) +#define EYE_PARM4_EN BIT(15) + +/* hi3670 pciephy register */ +#define APB_PHY_START_ADDR 0x40000 +#define SOC_PCIEPHY_MMC1PLL_CTRL1 0xc04 +#define SOC_PCIEPHY_MMC1PLL_CTRL16 0xC40 +#define SOC_PCIEPHY_MMC1PLL_CTRL17 0xC44 +#define SOC_PCIEPHY_MMC1PLL_CTRL20 0xC50 +#define SOC_PCIEPHY_MMC1PLL_CTRL21 0xC54 +#define SOC_PCIEPHY_MMC1PLL_STAT0 0xE00 + +#define CRGPERIPH_PEREN12 0x470 +#define CRGPERIPH_PERDIS12 0x474 +#define CRGPERIPH_PCIECTRL0 0x800 + +#define PCIE_FNPLL_FBDIV_MASK GENMASK(27, 16) +#define PCIE_FNPLL_FRACDIV_MASK GENMASK(23, 0) +#define PCIE_FNPLL_POSTDIV1_MASK GENMASK(10, 8) +#define PCIE_FNPLL_POSTDIV2_MASK GENMASK(14, 12) +#define PCIE_FNPLL_PLL_MODE_MASK BIT(25) + +#define PCIE_FNPLL_DLL_EN BIT(27) +#define PCIE_FNPLL_FBDIV 0xd0 +#define PCIE_FNPLL_FRACDIV 0x555555 +#define PCIE_FNPLL_POSTDIV1 0x5 +#define PCIE_FNPLL_POSTDIV2 0x4 +#define PCIE_FNPLL_PLL_MODE 0x0 + +#define PCIE_PHY_MMC1PLL 0x20 +#define PCIE_PHY_CHOOSE_FNPLL BIT(27) +#define PCIE_PHY_MMC1PLL_DISABLE BIT(0) +#define PCIE_PHY_PCIEPL_BP BIT(16) + +/* define ie,oe cfg */ +#define IO_OE_HARD_GT_MODE BIT(1) +#define IO_IE_EN_HARD_BYPASS BIT(27) +#define IO_OE_EN_HARD_BYPASS BIT(11) +#define IO_HARD_CTRL_DEBOUNCE_BYPASS BIT(10) +#define IO_OE_GT_MODE BIT(8) +#define DEBOUNCE_WAITCFG_IN GENMASK(23, 20) +#define DEBOUNCE_WAITCFG_OUT GENMASK(16, 13) + +#define IO_HP_DEBOUNCE_GT (BIT(12) | BIT(15)) +#define IO_PHYREF_SOFT_GT_MODE BIT(14) +#define IO_REF_SOFT_GT_MODE BIT(13) +#define IO_REF_HARD_GT_MODE BIT(0) + +/* noc power domain */ +#define NOC_POWER_IDLEREQ_1 0x38c +#define NOC_POWER_IDLE_1 0x394 +#define NOC_PW_MASK 0x10000 +#define NOC_PW_SET_BIT 0x1 + +#define NUM_EYEPARAM 5 + +/* info located in sysctrl */ +#define SCTRL_PCIE_CMOS_OFFSET 0x60 +#define SCTRL_PCIE_CMOS_BIT 0x10 +#define SCTRL_PCIE_ISO_OFFSET 0x44 +#define SCTRL_PCIE_ISO_BIT 0x30 +#define SCTRL_PCIE_HPCLK_OFFSET 0x190 +#define SCTRL_PCIE_HPCLK_BIT 0x184000 +#define SCTRL_PCIE_OE_OFFSET 0x14a +#define PCIE_DEBOUNCE_PARAM 0xf0f400 +#define PCIE_OE_BYPASS GENMASK(29, 28) + +/* peri_crg ctrl */ +#define CRGCTRL_PCIE_ASSERT_OFFSET 0x88 +#define CRGCTRL_PCIE_ASSERT_BIT 0x8c000000 + +#define FNPLL_HAS_LOCKED BIT(4) + +/* Time for delay */ +#define TIME_CMOS_MIN 100 +#define TIME_CMOS_MAX 105 +#define PIPE_CLK_STABLE_TIME 100 +#define PLL_CTRL_WAIT_TIME 200 +#define NOC_POWER_TIME 100 + +struct hi3670_pcie_phy { + struct device *dev; + void __iomem *base; + struct regmap *apb; + struct regmap *crgctrl; + struct regmap *sysctrl; + struct regmap *pmctrl; + struct clk *apb_sys_clk; + struct clk *apb_phy_clk; + struct clk *phy_ref_clk; + struct clk *aclk; + struct clk *aux_clk; + u32 eye_param[NUM_EYEPARAM]; +}; + +/* Registers in PCIePHY */ +static inline void hi3670_apb_phy_writel(struct hi3670_pcie_phy *phy, u32 val, + u32 reg) +{ + writel(val, phy->base + APB_PHY_START_ADDR + reg); +} + +static inline u32 hi3670_apb_phy_readl(struct hi3670_pcie_phy *phy, u32 reg) +{ + return readl(phy->base + APB_PHY_START_ADDR + reg); +} + +static inline void hi3670_apb_phy_updatel(struct hi3670_pcie_phy *phy, + u32 val, u32 mask, u32 reg) +{ + u32 regval; + + regval = hi3670_apb_phy_readl(phy, reg); + regval &= ~mask; + regval |= val; + hi3670_apb_phy_writel(phy, regval, reg); +} + +static inline void kirin_apb_natural_phy_writel(struct hi3670_pcie_phy *phy, + u32 val, u32 reg) +{ + writel(val, phy->base + reg); +} + +static inline u32 kirin_apb_natural_phy_readl(struct hi3670_pcie_phy *phy, + u32 reg) +{ + return readl(phy->base + reg); +} + +static void hi3670_pcie_phy_oe_enable(struct hi3670_pcie_phy *phy, bool enable) +{ + u32 val; + + regmap_read(phy->sysctrl, SCTRL_PCIE_OE_OFFSET, &val); + val |= PCIE_DEBOUNCE_PARAM; + if (enable) + val &= ~PCIE_OE_BYPASS; + else + val |= PCIE_OE_BYPASS; + regmap_write(phy->sysctrl, SCTRL_PCIE_OE_OFFSET, val); +} + +static void hi3670_pcie_get_eyeparam(struct hi3670_pcie_phy *phy) +{ + struct device *dev = phy->dev; + struct device_node *np; + int ret, i; + + np = dev->of_node; + + ret = of_property_read_u32_array(np, "hisilicon,eye-diagram-param", + phy->eye_param, NUM_EYEPARAM); + if (!ret) + return; + + /* There's no optional eye_param property. Set array to default */ + for (i = 0; i < NUM_EYEPARAM; i++) + phy->eye_param[i] = EYEPARAM_NOCFG; +} + +static void hi3670_pcie_set_eyeparam(struct hi3670_pcie_phy *phy) +{ + u32 val; + + val = kirin_apb_natural_phy_readl(phy, RAWLANEN_DIG_PCS_XF_TX_OVRD_IN_1); + + if (phy->eye_param[1] != EYEPARAM_NOCFG) { + val &= ~EYE_PARM1_MASK; + val |= FIELD_PREP(EYE_PARM1_MASK, phy->eye_param[1]); + val |= EYE_PARM1_EN; + } + kirin_apb_natural_phy_writel(phy, val, + RAWLANEN_DIG_PCS_XF_TX_OVRD_IN_1); + + val = kirin_apb_natural_phy_readl(phy, LANEN_DIG_ASIC_TX_OVRD_IN_2); + val &= ~(EYE_PARM2_MASK | EYE_PARM3_MASK); + if (phy->eye_param[2] != EYEPARAM_NOCFG) { + val |= FIELD_PREP(EYE_PARM2_MASK, phy->eye_param[2]); + val |= EYE_PARM2_EN; + } + + if (phy->eye_param[3] != EYEPARAM_NOCFG) { + val |= FIELD_PREP(EYE_PARM3_MASK, phy->eye_param[3]); + val |= EYE_PARM3_EN; + } + + kirin_apb_natural_phy_writel(phy, val, LANEN_DIG_ASIC_TX_OVRD_IN_2); + + val = kirin_apb_natural_phy_readl(phy, SUP_DIG_LVL_OVRD_IN); + if (phy->eye_param[0] != EYEPARAM_NOCFG) { + val &= ~EYE_PARM0_MASK; + val |= FIELD_PREP(EYE_PARM0_MASK, phy->eye_param[0]); + val |= EYE_PARM0_EN; + } + kirin_apb_natural_phy_writel(phy, val, SUP_DIG_LVL_OVRD_IN); + + val = kirin_apb_natural_phy_readl(phy, LANEN_DIG_ASIC_TX_OVRD_IN_1); + if (phy->eye_param[4] != EYEPARAM_NOCFG) { + val &= ~EYE_PARM4_MASK; + val |= FIELD_PREP(EYE_PARM4_MASK, phy->eye_param[4]); + val |= EYE_PARM4_EN; + } + kirin_apb_natural_phy_writel(phy, val, LANEN_DIG_ASIC_TX_OVRD_IN_1); +} + +static void hi3670_pcie_natural_cfg(struct hi3670_pcie_phy *phy) +{ + u32 val; + + /* change 2p mem_ctrl */ + regmap_write(phy->apb, SOC_PCIECTRL_CTRL20_ADDR, + SOC_PCIECTRL_CTRL20_2P_MEM_CTRL); + + regmap_read(phy->apb, SOC_PCIECTRL_CTRL7_ADDR, &val); + val |= PCIE_PULL_UP_SYS_AUX_PWR_DET; + regmap_write(phy->apb, SOC_PCIECTRL_CTRL7_ADDR, val); + + /* output, pull down */ + regmap_read(phy->apb, SOC_PCIECTRL_CTRL12_ADDR, &val); + val &= ~PCIE_OUTPUT_PULL_BITS; + val |= PCIE_OUTPUT_PULL_DOWN; + regmap_write(phy->apb, SOC_PCIECTRL_CTRL12_ADDR, val); + + /* Handle phy_reset and lane0_reset to HW */ + hi3670_apb_phy_updatel(phy, PCIEPHY_RESET_BIT, + PCIEPHY_PIPE_LINE0_RESET_BIT | PCIEPHY_RESET_BIT, + SOC_PCIEPHY_CTRL1_ADDR); + + /* fix chip bug: TxDetectRx fail */ + hi3670_apb_phy_updatel(phy, PCIE_TXDETECT_RX_FAIL, PCIE_TXDETECT_RX_FAIL, + SOC_PCIEPHY_CTRL38_ADDR); +} + +static void hi3670_pcie_pll_init(struct hi3670_pcie_phy *phy) +{ + hi3670_apb_phy_updatel(phy, PCIE_PHY_CHOOSE_FNPLL, PCIE_PHY_CHOOSE_FNPLL, + SOC_PCIEPHY_MMC1PLL_CTRL1); + + hi3670_apb_phy_updatel(phy, + FIELD_PREP(PCIE_FNPLL_FBDIV_MASK, PCIE_FNPLL_FBDIV), + PCIE_FNPLL_FBDIV_MASK, + SOC_PCIEPHY_MMC1PLL_CTRL16); + + hi3670_apb_phy_updatel(phy, + FIELD_PREP(PCIE_FNPLL_FRACDIV_MASK, PCIE_FNPLL_FRACDIV), + PCIE_FNPLL_FRACDIV_MASK, SOC_PCIEPHY_MMC1PLL_CTRL17); + + hi3670_apb_phy_updatel(phy, + PCIE_FNPLL_DLL_EN | + FIELD_PREP(PCIE_FNPLL_POSTDIV1_MASK, PCIE_FNPLL_POSTDIV1) | + FIELD_PREP(PCIE_FNPLL_POSTDIV2_MASK, PCIE_FNPLL_POSTDIV2) | + FIELD_PREP(PCIE_FNPLL_PLL_MODE_MASK, PCIE_FNPLL_PLL_MODE), + PCIE_FNPLL_POSTDIV1_MASK | + PCIE_FNPLL_POSTDIV2_MASK | + PCIE_FNPLL_PLL_MODE_MASK | PCIE_FNPLL_DLL_EN, + SOC_PCIEPHY_MMC1PLL_CTRL20); + + hi3670_apb_phy_writel(phy, PCIE_PHY_MMC1PLL, + SOC_PCIEPHY_MMC1PLL_CTRL21); +} + +static int hi3670_pcie_pll_ctrl(struct hi3670_pcie_phy *phy, bool enable) +{ + struct device *dev = phy->dev; + u32 val; + int time = PLL_CTRL_WAIT_TIME; + + if (enable) { + /* pd = 0 */ + hi3670_apb_phy_updatel(phy, 0, PCIE_PHY_MMC1PLL_DISABLE, + SOC_PCIEPHY_MMC1PLL_CTRL16); + + /* choose FNPLL */ + val = hi3670_apb_phy_readl(phy, SOC_PCIEPHY_MMC1PLL_STAT0); + while (!(val & FNPLL_HAS_LOCKED)) { + if (!time) { + dev_err(dev, "wait for pll_lock timeout\n"); + return -EINVAL; + } + time--; + udelay(1); + val = hi3670_apb_phy_readl(phy, SOC_PCIEPHY_MMC1PLL_STAT0); + } + + hi3670_apb_phy_updatel(phy, 0, PCIE_PHY_PCIEPL_BP, + SOC_PCIEPHY_MMC1PLL_CTRL20); + + } else { + hi3670_apb_phy_updatel(phy, + PCIE_PHY_MMC1PLL_DISABLE, + PCIE_PHY_MMC1PLL_DISABLE, + SOC_PCIEPHY_MMC1PLL_CTRL16); + + hi3670_apb_phy_updatel(phy, PCIE_PHY_PCIEPL_BP, + PCIE_PHY_PCIEPL_BP, + SOC_PCIEPHY_MMC1PLL_CTRL20); + } + + return 0; +} + +static void hi3670_pcie_hp_debounce_gt(struct hi3670_pcie_phy *phy, bool open) +{ + if (open) + /* gt_clk_pcie_hp/gt_clk_pcie_debounce open */ + regmap_write(phy->crgctrl, CRGPERIPH_PEREN12, + IO_HP_DEBOUNCE_GT); + else + /* gt_clk_pcie_hp/gt_clk_pcie_debounce close */ + regmap_write(phy->crgctrl, CRGPERIPH_PERDIS12, + IO_HP_DEBOUNCE_GT); +} + +static void hi3670_pcie_phyref_gt(struct hi3670_pcie_phy *phy, bool open) +{ + unsigned int val; + + regmap_read(phy->crgctrl, CRGPERIPH_PCIECTRL0, &val); + + if (open) + val &= ~IO_OE_HARD_GT_MODE; /* enable hard gt mode */ + else + val |= IO_OE_HARD_GT_MODE; /* disable hard gt mode */ + + regmap_write(phy->crgctrl, CRGPERIPH_PCIECTRL0, val); + + /* disable soft gt mode */ + regmap_write(phy->crgctrl, CRGPERIPH_PERDIS12, IO_PHYREF_SOFT_GT_MODE); +} + +static void hi3670_pcie_oe_ctrl(struct hi3670_pcie_phy *phy, bool en_flag) +{ + unsigned int val; + + regmap_read(phy->crgctrl, CRGPERIPH_PCIECTRL0, &val); + + /* set ie cfg */ + val |= IO_IE_EN_HARD_BYPASS; + + /* set oe cfg */ + val &= ~IO_HARD_CTRL_DEBOUNCE_BYPASS; + + /* set phy_debounce in&out time */ + val |= (DEBOUNCE_WAITCFG_IN | DEBOUNCE_WAITCFG_OUT); + + /* select oe_gt_mode */ + val |= IO_OE_GT_MODE; + + if (en_flag) + val &= ~IO_OE_EN_HARD_BYPASS; + else + val |= IO_OE_EN_HARD_BYPASS; + + regmap_write(phy->crgctrl, CRGPERIPH_PCIECTRL0, val); +} + +static void hi3670_pcie_ioref_gt(struct hi3670_pcie_phy *phy, bool open) +{ + unsigned int val; + + if (open) { + regmap_write(phy->apb, SOC_PCIECTRL_CTRL21_ADDR, + SOC_PCIECTRL_CTRL21_DEFAULT); + + hi3670_pcie_oe_ctrl(phy, true); + + /* en hard gt mode */ + regmap_read(phy->crgctrl, CRGPERIPH_PCIECTRL0, &val); + val &= ~IO_REF_HARD_GT_MODE; + regmap_write(phy->crgctrl, CRGPERIPH_PCIECTRL0, val); + + /* disable soft gt mode */ + regmap_write(phy->crgctrl, CRGPERIPH_PERDIS12, + IO_REF_SOFT_GT_MODE); + + } else { + /* disable hard gt mode */ + regmap_read(phy->crgctrl, CRGPERIPH_PCIECTRL0, &val); + val |= IO_REF_HARD_GT_MODE; + regmap_write(phy->crgctrl, CRGPERIPH_PCIECTRL0, val); + + /* disable soft gt mode */ + regmap_write(phy->crgctrl, CRGPERIPH_PERDIS12, + IO_REF_SOFT_GT_MODE); + + hi3670_pcie_oe_ctrl(phy, false); + } +} + +static int hi3670_pcie_allclk_ctrl(struct hi3670_pcie_phy *phy, bool clk_on) +{ + struct device *dev = phy->dev; + int ret = 0; + + if (!clk_on) + goto close_clocks; + + /* choose 100MHz clk src: Bit[8]==1 pad, Bit[8]==0 pll */ + hi3670_apb_phy_updatel(phy, 0, PCIE_CLK_SOURCE, + SOC_PCIEPHY_CTRL1_ADDR); + + hi3670_pcie_pll_init(phy); + + ret = hi3670_pcie_pll_ctrl(phy, true); + if (ret) { + dev_err(dev, "Failed to enable pll\n"); + return -EINVAL; + } + hi3670_pcie_hp_debounce_gt(phy, true); + hi3670_pcie_phyref_gt(phy, true); + hi3670_pcie_ioref_gt(phy, true); + + ret = clk_set_rate(phy->aclk, AXI_CLK_FREQ); + if (ret) { + dev_err(dev, "Failed to set rate\n"); + goto close_clocks; + } + + return 0; + +close_clocks: + hi3670_pcie_ioref_gt(phy, false); + hi3670_pcie_phyref_gt(phy, false); + hi3670_pcie_hp_debounce_gt(phy, false); + + hi3670_pcie_pll_ctrl(phy, false); + + return ret; +} + +static bool is_pipe_clk_stable(struct hi3670_pcie_phy *phy) +{ + struct device *dev = phy->dev; + u32 val; + u32 time = PIPE_CLK_STABLE_TIME; + u32 pipe_clk_stable = PCIE_IS_CLOCK_STABLE; + + val = hi3670_apb_phy_readl(phy, SOC_PCIEPHY_STATE0_ADDR); + while (val & pipe_clk_stable) { + mdelay(1); + if (!time) { + dev_err(dev, "PIPE clk is not stable\n"); + return false; + } + time--; + val = hi3670_apb_phy_readl(phy, SOC_PCIEPHY_STATE0_ADDR); + } + + return true; +} + +static int hi3670_pcie_noc_power(struct hi3670_pcie_phy *phy, bool enable) +{ + struct device *dev = phy->dev; + u32 time = NOC_POWER_TIME; + unsigned int val = NOC_PW_MASK; + int rst; + + if (enable) + val = NOC_PW_MASK | NOC_PW_SET_BIT; + else + val = NOC_PW_MASK; + rst = enable ? 1 : 0; + + regmap_write(phy->pmctrl, NOC_POWER_IDLEREQ_1, val); + + time = NOC_POWER_TIME; + regmap_read(phy->pmctrl, NOC_POWER_IDLE_1, &val); + while ((val & NOC_PW_SET_BIT) != rst) { + udelay(10); + if (!time) { + dev_err(dev, "Failed to reverse noc power-status\n"); + return -EINVAL; + } + time--; + regmap_read(phy->pmctrl, NOC_POWER_IDLE_1, &val); + } + + return 0; +} + +static int hi3670_pcie_get_resources_from_pcie(struct hi3670_pcie_phy *phy) +{ + struct device_node *pcie_port; + struct device *dev = phy->dev; + struct device *pcie_dev; + + pcie_port = of_get_child_by_name(dev->parent->of_node, "pcie"); + if (!pcie_port) { + dev_err(dev, "no pcie node found in %s\n", + dev->parent->of_node->full_name); + return -ENODEV; + } + + pcie_dev = bus_find_device_by_of_node(&platform_bus_type, pcie_port); + if (!pcie_dev) { + dev_err(dev, "Didn't find pcie device\n"); + return -ENODEV; + } + + /* + * We might just use NULL instead of the APB name, as the + * pcie-kirin currently registers directly just one regmap (although + * the DWC driver register other regmaps). + * + * Yet, it sounds safer to warrant that it will be accessing the + * right regmap. So, let's use the named version. + */ + phy->apb = dev_get_regmap(pcie_dev, "kirin_pcie_apb"); + if (!phy->apb) { + dev_err(dev, "Failed to get APB regmap\n"); + return -ENODEV; + } + + return 0; +} + +static int kirin_pcie_clk_ctrl(struct hi3670_pcie_phy *phy, bool enable) +{ + int ret = 0; + + if (!enable) + goto close_clk; + + ret = clk_set_rate(phy->phy_ref_clk, REF_CLK_FREQ); + if (ret) + return ret; + + ret = clk_prepare_enable(phy->phy_ref_clk); + if (ret) + return ret; + + ret = clk_prepare_enable(phy->apb_sys_clk); + if (ret) + goto apb_sys_fail; + + ret = clk_prepare_enable(phy->apb_phy_clk); + if (ret) + goto apb_phy_fail; + + ret = clk_prepare_enable(phy->aclk); + if (ret) + goto aclk_fail; + + ret = clk_prepare_enable(phy->aux_clk); + if (ret) + goto aux_clk_fail; + + return 0; + +close_clk: + clk_disable_unprepare(phy->aux_clk); +aux_clk_fail: + clk_disable_unprepare(phy->aclk); +aclk_fail: + clk_disable_unprepare(phy->apb_phy_clk); +apb_phy_fail: + clk_disable_unprepare(phy->apb_sys_clk); +apb_sys_fail: + clk_disable_unprepare(phy->phy_ref_clk); + + return ret; +} + +static int hi3670_pcie_phy_init(struct phy *generic_phy) +{ + struct hi3670_pcie_phy *phy = phy_get_drvdata(generic_phy); + int ret; + + /* + * The code under hi3670_pcie_get_resources_from_pcie() need to + * access the reset-gpios and the APB registers, both from the + * pcie-kirin driver. + * + * The APB is obtained via the pcie driver's regmap + * Such kind of resource can only be obtained during the PCIe + * power_on sequence, as the code inside pcie-kirin needs to + * be already probed, as it needs to register the APB regmap. + */ + + ret = hi3670_pcie_get_resources_from_pcie(phy); + if (ret) + return ret; + + return 0; +} + +static int hi3670_pcie_phy_power_on(struct phy *generic_phy) +{ + struct hi3670_pcie_phy *phy = phy_get_drvdata(generic_phy); + int val, ret; + + /* Power supply for Host */ + regmap_write(phy->sysctrl, SCTRL_PCIE_CMOS_OFFSET, SCTRL_PCIE_CMOS_BIT); + usleep_range(TIME_CMOS_MIN, TIME_CMOS_MAX); + + hi3670_pcie_phy_oe_enable(phy, true); + + ret = kirin_pcie_clk_ctrl(phy, true); + if (ret) + return ret; + + /* ISO disable, PCIeCtrl, PHY assert and clk gate clear */ + regmap_write(phy->sysctrl, SCTRL_PCIE_ISO_OFFSET, SCTRL_PCIE_ISO_BIT); + regmap_write(phy->crgctrl, CRGCTRL_PCIE_ASSERT_OFFSET, + CRGCTRL_PCIE_ASSERT_BIT); + regmap_write(phy->sysctrl, SCTRL_PCIE_HPCLK_OFFSET, + SCTRL_PCIE_HPCLK_BIT); + + hi3670_pcie_natural_cfg(phy); + + ret = hi3670_pcie_allclk_ctrl(phy, true); + if (ret) + goto disable_clks; + + /* pull down phy_test_powerdown signal */ + hi3670_apb_phy_updatel(phy, 0, PCIE_PULL_DOWN_PHY_TEST_POWERDOWN, + SOC_PCIEPHY_CTRL0_ADDR); + + /* deassert controller perst_n */ + regmap_read(phy->apb, SOC_PCIECTRL_CTRL12_ADDR, &val); + val |= PCIE_DEASSERT_CONTROLLER_PERST; + regmap_write(phy->apb, SOC_PCIECTRL_CTRL12_ADDR, val); + udelay(10); + + ret = is_pipe_clk_stable(phy); + if (!ret) + goto disable_clks; + + hi3670_pcie_set_eyeparam(phy); + + ret = hi3670_pcie_noc_power(phy, false); + if (ret) + goto disable_clks; + + return 0; + +disable_clks: + kirin_pcie_clk_ctrl(phy, false); + return ret; +} + +static int hi3670_pcie_phy_power_off(struct phy *generic_phy) +{ + struct hi3670_pcie_phy *phy = phy_get_drvdata(generic_phy); + + hi3670_pcie_phy_oe_enable(phy, false); + + hi3670_pcie_allclk_ctrl(phy, false); + + /* Drop power supply for Host */ + regmap_write(phy->sysctrl, SCTRL_PCIE_CMOS_OFFSET, 0); + + /* + * FIXME: The enabled clocks should be disabled here by calling + * kirin_pcie_clk_ctrl(phy, false); + * However, some clocks used at Kirin 970 should be marked as + * CLK_IS_CRITICAL at clk-hi3670 driver, as powering such clocks off + * cause an Asynchronous SError interrupt, which produces panic(). + * While clk-hi3670 is not fixed, we cannot risk disabling clocks here. + */ + + return 0; +} + +static const struct phy_ops hi3670_phy_ops = { + .init = hi3670_pcie_phy_init, + .power_on = hi3670_pcie_phy_power_on, + .power_off = hi3670_pcie_phy_power_off, + .owner = THIS_MODULE, +}; + +static int hi3670_pcie_phy_get_resources(struct hi3670_pcie_phy *phy, + struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + /* syscon */ + phy->crgctrl = syscon_regmap_lookup_by_compatible("hisilicon,hi3670-crgctrl"); + if (IS_ERR(phy->crgctrl)) + return PTR_ERR(phy->crgctrl); + + phy->sysctrl = syscon_regmap_lookup_by_compatible("hisilicon,hi3670-sctrl"); + if (IS_ERR(phy->sysctrl)) + return PTR_ERR(phy->sysctrl); + + phy->pmctrl = syscon_regmap_lookup_by_compatible("hisilicon,hi3670-pmctrl"); + if (IS_ERR(phy->sysctrl)) + return PTR_ERR(phy->sysctrl); + + /* clocks */ + phy->phy_ref_clk = devm_clk_get(dev, "phy_ref"); + if (IS_ERR(phy->phy_ref_clk)) + return PTR_ERR(phy->phy_ref_clk); + + phy->aux_clk = devm_clk_get(dev, "aux"); + if (IS_ERR(phy->aux_clk)) + return PTR_ERR(phy->aux_clk); + + phy->apb_phy_clk = devm_clk_get(dev, "apb_phy"); + if (IS_ERR(phy->apb_phy_clk)) + return PTR_ERR(phy->apb_phy_clk); + + phy->apb_sys_clk = devm_clk_get(dev, "apb_sys"); + if (IS_ERR(phy->apb_sys_clk)) + return PTR_ERR(phy->apb_sys_clk); + + phy->aclk = devm_clk_get(dev, "aclk"); + if (IS_ERR(phy->aclk)) + return PTR_ERR(phy->aclk); + + /* registers */ + phy->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(phy->base)) + return PTR_ERR(phy->base); + + hi3670_pcie_get_eyeparam(phy); + + return 0; +} + +static int hi3670_pcie_phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct hi3670_pcie_phy *phy; + struct phy *generic_phy; + int ret; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->dev = dev; + + ret = hi3670_pcie_phy_get_resources(phy, pdev); + if (ret) + return ret; + + generic_phy = devm_phy_create(dev, dev->of_node, &hi3670_phy_ops); + if (IS_ERR(generic_phy)) { + dev_err(dev, "failed to create PHY\n"); + return PTR_ERR(generic_phy); + } + + phy_set_drvdata(generic_phy, phy); + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id hi3670_pcie_phy_match[] = { + { + .compatible = "hisilicon,hi970-pcie-phy", + }, + {}, +}; + +static struct platform_driver hi3670_pcie_phy_driver = { + .probe = hi3670_pcie_phy_probe, + .driver = { + .of_match_table = hi3670_pcie_phy_match, + .name = "hi3670_pcie_phy", + .suppress_bind_attrs = true, + } +}; +builtin_platform_driver(hi3670_pcie_phy_driver); + +MODULE_DEVICE_TABLE(of, hi3670_pcie_phy_match); +MODULE_DESCRIPTION("PCIe phy driver for Kirin 970"); +MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>"); +MODULE_AUTHOR("Manivannan Sadhasivam <mani@kernel.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c index 34a6a9a1ceb2..b133ae06757a 100644 --- a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c +++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c @@ -140,14 +140,19 @@ static int hisi_inno_phy_probe(struct platform_device *pdev) struct phy *phy; rst = of_reset_control_get_exclusive(child, NULL); - if (IS_ERR(rst)) + if (IS_ERR(rst)) { + of_node_put(child); return PTR_ERR(rst); + } + priv->ports[i].utmi_rst = rst; priv->ports[i].priv = priv; phy = devm_phy_create(dev, child, &hisi_inno_phy_ops); - if (IS_ERR(phy)) + if (IS_ERR(phy)) { + of_node_put(child); return PTR_ERR(phy); + } phy_set_bus_width(phy, 8); phy_set_drvdata(phy, &priv->ports[i]); @@ -155,6 +160,7 @@ static int hisi_inno_phy_probe(struct platform_device *pdev) if (i > INNO_PHY_PORT_NUM) { dev_warn(dev, "Support %d ports in maximum\n", i); + of_node_put(child); break; } } diff --git a/drivers/phy/microchip/sparx5_serdes.c b/drivers/phy/microchip/sparx5_serdes.c index 4076580fc2cd..ab1b0986aa67 100644 --- a/drivers/phy/microchip/sparx5_serdes.c +++ b/drivers/phy/microchip/sparx5_serdes.c @@ -2475,10 +2475,10 @@ static int sparx5_serdes_probe(struct platform_device *pdev) return -EINVAL; } iomem = devm_ioremap(priv->dev, iores->start, resource_size(iores)); - if (IS_ERR(iomem)) { + if (!iomem) { dev_err(priv->dev, "Unable to get serdes registers: %s\n", iores->name); - return PTR_ERR(iomem); + return -ENOMEM; } for (idx = 0; idx < ARRAY_SIZE(sparx5_serdes_iomap); idx++) { struct sparx5_serdes_io_resource *iomap = &sparx5_serdes_iomap[idx]; diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index f14032170b1c..456a59d8c7d0 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -135,6 +135,8 @@ enum qphy_reg_layout { QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR, QPHY_PCS_LFPS_RXTERM_IRQ_STATUS, QPHY_PCS_POWER_DOWN_CONTROL, + /* PCS_MISC registers */ + QPHY_PCS_MISC_TYPEC_CTRL, /* Keep last to ensure regs_layout arrays are properly initialized */ QPHY_LAYOUT_SIZE }; @@ -229,6 +231,16 @@ static const unsigned int sm8350_usb3_uniphy_regs_layout[QPHY_LAYOUT_SIZE] = { [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x1014, }; +static const unsigned int qcm2290_usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = { + [QPHY_SW_RESET] = 0x00, + [QPHY_PCS_POWER_DOWN_CONTROL] = 0x04, + [QPHY_START_CTRL] = 0x08, + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0xd8, + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0xdc, + [QPHY_PCS_STATUS] = 0x174, + [QPHY_PCS_MISC_TYPEC_CTRL] = 0x00, +}; + static const unsigned int sdm845_ufsphy_regs_layout[QPHY_LAYOUT_SIZE] = { [QPHY_START_CTRL] = 0x00, [QPHY_PCS_READY_STATUS] = 0x160, @@ -2761,6 +2773,99 @@ static const struct qmp_phy_init_tbl sm8350_usb3_uniphy_pcs_tbl[] = { QMP_PHY_INIT_CFG(QPHY_V4_PCS_REFGEN_REQ_CONFIG1, 0x21), }; +static const struct qmp_phy_init_tbl qcm2290_usb3_serdes_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x14), + QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x30), + QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x06), + QMP_PHY_INIT_CFG(QSERDES_COM_RESETSM_CNTRL, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_RESETSM_CNTRL2, 0x08), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03), + QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_CORECLK_DIV, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x15), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x34), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_CFG, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0xde), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x07), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_INITVAL, 0x80), + QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CTRL_BY_PSM, 0x01), +}; + +static const struct qmp_phy_init_tbl qcm2290_usb3_tx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_TX_HIGHZ_DRVR_EN, 0x10), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RCV_DETECT_LVL_2, 0x12), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_LANE_MODE_1, 0xc6), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX, 0x00), +}; + +static const struct qmp_phy_init_tbl qcm2290_usb3_rx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_PI_CONTROLS, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FO_GAIN, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_GAIN, 0x06), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x75), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2, 0x02), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4e), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4, 0x18), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_VGA_CAL_CNTRL2, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_CNTRL, 0x03), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_ENABLES, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_MODE_00, 0x00), +}; + +static const struct qmp_phy_init_tbl qcm2290_usb3_pcs_tbl[] = { + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V0, 0x9f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V0, 0x17), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0, 0x0f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL2, 0x83), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL1, 0x02), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_L, 0x09), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_H_TOL, 0xa2), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_MAN_CODE, 0x85), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG1, 0xd1), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG2, 0x1f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG3, 0x47), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME, 0x75), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_RUN_TIME, 0x13), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK, 0x86), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TSYNC_RSYNC_TIME, 0x44), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L, 0xe7), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H, 0x03), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L, 0x40), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H, 0x00), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0x88), +}; + struct qmp_phy; /* struct qmp_phy_cfg - per-PHY initialization config */ @@ -2995,6 +3100,10 @@ static const char * const qmp_v4_sdx55_usbphy_clk_l[] = { "aux", "cfg_ahb", "ref" }; +static const char * const qcm2290_usb3phy_clk_l[] = { + "cfg_ahb", "ref", "com_aux", +}; + /* list of resets */ static const char * const msm8996_pciephy_reset_l[] = { "phy", "common", "cfg", @@ -3008,6 +3117,10 @@ static const char * const sc7180_usb3phy_reset_l[] = { "phy", }; +static const char * const qcm2290_usb3phy_reset_l[] = { + "phy_phy", "phy", +}; + static const char * const sdm845_pciephy_reset_l[] = { "phy", }; @@ -3632,7 +3745,7 @@ static const struct qmp_phy_cfg sc8180x_pciephy_cfg = { .nlanes = 1, .serdes_tbl = sc8180x_qmp_pcie_serdes_tbl, - .serdes_tbl_num = ARRAY_SIZE(sm8250_qmp_pcie_serdes_tbl), + .serdes_tbl_num = ARRAY_SIZE(sc8180x_qmp_pcie_serdes_tbl), .tx_tbl = sc8180x_qmp_pcie_tx_tbl, .tx_tbl_num = ARRAY_SIZE(sc8180x_qmp_pcie_tx_tbl), .rx_tbl = sc8180x_qmp_pcie_rx_tbl, @@ -3974,6 +4087,33 @@ static const struct qmp_phy_cfg sm8350_usb3_uniphy_cfg = { .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX, }; +static const struct qmp_phy_cfg qcm2290_usb3phy_cfg = { + .type = PHY_TYPE_USB3, + .nlanes = 1, + + .serdes_tbl = qcm2290_usb3_serdes_tbl, + .serdes_tbl_num = ARRAY_SIZE(qcm2290_usb3_serdes_tbl), + .tx_tbl = qcm2290_usb3_tx_tbl, + .tx_tbl_num = ARRAY_SIZE(qcm2290_usb3_tx_tbl), + .rx_tbl = qcm2290_usb3_rx_tbl, + .rx_tbl_num = ARRAY_SIZE(qcm2290_usb3_rx_tbl), + .pcs_tbl = qcm2290_usb3_pcs_tbl, + .pcs_tbl_num = ARRAY_SIZE(qcm2290_usb3_pcs_tbl), + .clk_list = qcm2290_usb3phy_clk_l, + .num_clks = ARRAY_SIZE(qcm2290_usb3phy_clk_l), + .reset_list = qcm2290_usb3phy_reset_l, + .num_resets = ARRAY_SIZE(qcm2290_usb3phy_reset_l), + .vreg_list = qmp_phy_vreg_l, + .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l), + .regs = qcm2290_usb3phy_regs_layout, + + .start_ctrl = SERDES_START | PCS_START, + .pwrdn_ctrl = SW_PWRDN, + .phy_status = PHYSTATUS, + + .is_dual_lane_phy = true, +}; + static void qcom_qmp_phy_configure_lane(void __iomem *base, const unsigned int *regs, const struct qmp_phy_init_tbl tbl[], @@ -5154,11 +5294,7 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np) * Roll a devm action because the clock provider is the child node, but * the child node is not actually a device. */ - ret = devm_add_action(qmp->dev, phy_clk_release_provider, np); - if (ret) - phy_clk_release_provider(np); - - return ret; + return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np); } /* @@ -5350,11 +5486,7 @@ static int phy_dp_clks_register(struct qcom_qmp *qmp, struct qmp_phy *qphy, * Roll a devm action because the clock provider is the child node, but * the child node is not actually a device. */ - ret = devm_add_action(qmp->dev, phy_clk_release_provider, np); - if (ret) - phy_clk_release_provider(np); - - return ret; + return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np); } static const struct phy_ops qcom_qmp_phy_gen_ops = { @@ -5613,6 +5745,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = { }, { .compatible = "qcom,sm8350-qmp-usb3-uni-phy", .data = &sm8350_usb3_uniphy_cfg, + }, { + .compatible = "qcom,qcm2290-qmp-usb3-phy", + .data = &qcm2290_usb3phy_cfg, }, { }, }; diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h index bebeac2c091c..e15f461065bb 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.h +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -169,6 +169,7 @@ #define QSERDES_COM_BIAS_EN_CTRL_BY_PSM 0x0a8 #define QSERDES_COM_SYSCLK_EN_SEL 0x0ac #define QSERDES_COM_RESETSM_CNTRL 0x0b4 +#define QSERDES_COM_RESETSM_CNTRL2 0x0b8 #define QSERDES_COM_RESTRIM_CTRL 0x0bc #define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 #define QSERDES_COM_LOCK_CMP_EN 0x0c8 @@ -181,6 +182,7 @@ #define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 #define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec #define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 +#define QSERDES_COM_INTEGLOOP_INITVAL 0x100 #define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 #define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c #define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 3c1d3b71c825..032d02bf50c5 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -371,7 +371,7 @@ static const struct qusb2_phy_cfg sm6115_phy_cfg = { }; static const char * const qusb2_phy_vreg_names[] = { - "vdda-pll", "vdda-phy-dpdm", + "vdd", "vdda-pll", "vdda-phy-dpdm", }; #define QUSB2_NUM_VREGS ARRAY_SIZE(qusb2_phy_vreg_names) @@ -561,7 +561,7 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) { struct device *dev = &qphy->phy->dev; const struct qusb2_phy_cfg *cfg = qphy->cfg; - u8 *val; + u8 *val, hstx_trim; /* efuse register is optional */ if (!qphy->cell) @@ -575,7 +575,13 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) * set while configuring the phy. */ val = nvmem_cell_read(qphy->cell, NULL); - if (IS_ERR(val) || !val[0]) { + if (IS_ERR(val)) { + dev_dbg(dev, "failed to read a valid hs-tx trim value\n"); + return; + } + hstx_trim = val[0]; + kfree(val); + if (!hstx_trim) { dev_dbg(dev, "failed to read a valid hs-tx trim value\n"); return; } @@ -583,12 +589,10 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) /* Fused TUNE1/2 value is the higher nibble only */ if (cfg->update_tune1_with_efuse) qusb2_write_mask(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE1], - val[0] << HSTX_TRIM_SHIFT, - HSTX_TRIM_MASK); + hstx_trim << HSTX_TRIM_SHIFT, HSTX_TRIM_MASK); else qusb2_write_mask(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE2], - val[0] << HSTX_TRIM_SHIFT, - HSTX_TRIM_MASK); + hstx_trim << HSTX_TRIM_SHIFT, HSTX_TRIM_MASK); } static int qusb2_phy_set_mode(struct phy *phy, @@ -914,6 +918,9 @@ static const struct of_device_id qusb2_phy_of_match_table[] = { .compatible = "qcom,msm8998-qusb2-phy", .data = &msm8998_phy_cfg, }, { + .compatible = "qcom,qcm2290-qusb2-phy", + .data = &sm6115_phy_cfg, + }, { .compatible = "qcom,sdm660-qusb2-phy", .data = &sdm660_phy_cfg, }, { diff --git a/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c b/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c index ae4bac024c7b..7e61202aa234 100644 --- a/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c +++ b/drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c @@ -33,7 +33,7 @@ #define USB2_PHY_USB_PHY_HS_PHY_CTRL_COMMON0 (0x54) #define RETENABLEN BIT(3) -#define FSEL_MASK GENMASK(7, 5) +#define FSEL_MASK GENMASK(6, 4) #define FSEL_DEFAULT (0x3 << 4) #define USB2_PHY_USB_PHY_HS_PHY_CTRL_COMMON1 (0x58) diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c index 4f569d9307b9..1938365abbb3 100644 --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c @@ -321,7 +321,7 @@ rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy) struct device_node *node = rphy->dev->of_node; struct clk_init_data init; const char *clk_name; - int ret; + int ret = 0; init.flags = 0; init.name = "clk_usbphy_480m"; @@ -352,15 +352,8 @@ rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy) if (ret < 0) goto err_clk_provider; - ret = devm_add_action(rphy->dev, rockchip_usb2phy_clk480m_unregister, - rphy); - if (ret < 0) - goto err_unreg_action; - - return 0; + return devm_add_action_or_reset(rphy->dev, rockchip_usb2phy_clk480m_unregister, rphy); -err_unreg_action: - of_clk_del_provider(node); err_clk_provider: clk_unregister(rphy->clk480m); err_ret: diff --git a/drivers/phy/samsung/Kconfig b/drivers/phy/samsung/Kconfig index e20d2fcc9fe7..3ccaabf2850a 100644 --- a/drivers/phy/samsung/Kconfig +++ b/drivers/phy/samsung/Kconfig @@ -30,16 +30,16 @@ config PHY_EXYNOS_PCIE This driver provides PHY interface for Exynos PCIe controller. config PHY_SAMSUNG_UFS - tristate "SAMSUNG SoC series UFS PHY driver" + tristate "Exynos SoC series UFS PHY driver" depends on OF && (ARCH_EXYNOS || COMPILE_TEST) select GENERIC_PHY help - Enable this to support the Samsung UFS PHY driver for - Samsung SoCs. This driver provides the interface for UFS - host controller to do PHY related programming. + Enable this to support the Samsung Exynos SoC UFS PHY driver for + Samsung Exynos SoCs. This driver provides the interface for UFS host + controller to do PHY related programming. config PHY_SAMSUNG_USB2 - tristate "Samsung USB 2.0 PHY driver" + tristate "S5P/Exynos SoC series USB 2.0 PHY driver" depends on HAS_IOMEM depends on USB_EHCI_EXYNOS || USB_OHCI_EXYNOS || USB_DWC2 || COMPILE_TEST select GENERIC_PHY @@ -47,9 +47,9 @@ config PHY_SAMSUNG_USB2 default ARCH_EXYNOS help Enable this to support the Samsung USB 2.0 PHY driver for Samsung - SoCs. This driver provides the interface for USB 2.0 PHY. Support - for particular PHYs will be enabled based on the SoC type in addition - to this driver. + S5Pv210 and Exynos SoCs. This driver provides the interface for USB + 2.0 PHY. Support for particular PHYs will be enabled based on the SoC + type in addition to this driver. config PHY_EXYNOS4210_USB2 bool diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c index 937a14fa7448..7df6a63ad37b 100644 --- a/drivers/phy/st/phy-stm32-usbphyc.c +++ b/drivers/phy/st/phy-stm32-usbphyc.c @@ -20,6 +20,7 @@ #define STM32_USBPHYC_PLL 0x0 #define STM32_USBPHYC_MISC 0x8 #define STM32_USBPHYC_MONITOR(X) (0x108 + ((X) * 0x100)) +#define STM32_USBPHYC_TUNE(X) (0x10C + ((X) * 0x100)) #define STM32_USBPHYC_VERSION 0x3F4 /* STM32_USBPHYC_PLL bit fields */ @@ -41,6 +42,83 @@ #define STM32_USBPHYC_MON_SEL_LOCKP 0x1F #define STM32_USBPHYC_MON_OUT_LOCKP BIT(3) +/* STM32_USBPHYC_TUNE bit fields */ +#define INCURREN BIT(0) +#define INCURRINT BIT(1) +#define LFSCAPEN BIT(2) +#define HSDRVSLEW BIT(3) +#define HSDRVDCCUR BIT(4) +#define HSDRVDCLEV BIT(5) +#define HSDRVCURINCR BIT(6) +#define FSDRVRFADJ BIT(7) +#define HSDRVRFRED BIT(8) +#define HSDRVCHKITRM GENMASK(12, 9) +#define HSDRVCHKZTRM GENMASK(14, 13) +#define OTPCOMP GENMASK(19, 15) +#define SQLCHCTL GENMASK(21, 20) +#define HDRXGNEQEN BIT(22) +#define HSRXOFF GENMASK(24, 23) +#define HSFALLPREEM BIT(25) +#define SHTCCTCTLPROT BIT(26) +#define STAGSEL BIT(27) + +enum boosting_vals { + BOOST_1000_UA = 1000, + BOOST_2000_UA = 2000, +}; + +enum dc_level_vals { + DC_NOMINAL, + DC_PLUS_5_TO_7_MV, + DC_PLUS_10_TO_14_MV, + DC_MINUS_5_TO_7_MV, + DC_MAX, +}; + +enum current_trim { + CUR_NOMINAL, + CUR_PLUS_1_56_PCT, + CUR_PLUS_3_12_PCT, + CUR_PLUS_4_68_PCT, + CUR_PLUS_6_24_PCT, + CUR_PLUS_7_8_PCT, + CUR_PLUS_9_36_PCT, + CUR_PLUS_10_92_PCT, + CUR_PLUS_12_48_PCT, + CUR_PLUS_14_04_PCT, + CUR_PLUS_15_6_PCT, + CUR_PLUS_17_16_PCT, + CUR_PLUS_19_01_PCT, + CUR_PLUS_20_58_PCT, + CUR_PLUS_22_16_PCT, + CUR_PLUS_23_73_PCT, + CUR_MAX, +}; + +enum impedance_trim { + IMP_NOMINAL, + IMP_MINUS_2_OHMS, + IMP_MINUS_4_OMHS, + IMP_MINUS_6_OHMS, + IMP_MAX, +}; + +enum squelch_level { + SQLCH_NOMINAL, + SQLCH_PLUS_7_MV, + SQLCH_MINUS_5_MV, + SQLCH_PLUS_14_MV, + SQLCH_MAX, +}; + +enum rx_offset { + NO_RX_OFFSET, + RX_OFFSET_PLUS_5_MV, + RX_OFFSET_PLUS_10_MV, + RX_OFFSET_MINUS_5_MV, + RX_OFFSET_MAX, +}; + /* STM32_USBPHYC_VERSION bit fields */ #define MINREV GENMASK(3, 0) #define MAJREV GENMASK(7, 4) @@ -60,6 +138,7 @@ struct stm32_usbphyc_phy { struct regulator *vbus; u32 index; bool active; + u32 tune; }; struct stm32_usbphyc { @@ -375,6 +454,107 @@ static int stm32_usbphyc_clk48_register(struct stm32_usbphyc *usbphyc) return ret; } +static void stm32_usbphyc_phy_tuning(struct stm32_usbphyc *usbphyc, + struct device_node *np, u32 index) +{ + struct stm32_usbphyc_phy *usbphyc_phy = usbphyc->phys[index]; + u32 reg = STM32_USBPHYC_TUNE(index); + u32 otpcomp, val; + int ret; + + /* Backup OTP compensation code */ + otpcomp = FIELD_GET(OTPCOMP, readl_relaxed(usbphyc->base + reg)); + + ret = of_property_read_u32(np, "st,current-boost-microamp", &val); + if (ret != -EINVAL) { + if (!ret && (val == BOOST_1000_UA || val == BOOST_2000_UA)) { + val = (val == BOOST_2000_UA) ? 1 : 0; + usbphyc_phy->tune |= INCURREN | FIELD_PREP(INCURRINT, val); + } else { + dev_warn(usbphyc->dev, "phy%d: invalid st,current-boost-microamp\n", index); + } + } + + if (!of_property_read_bool(np, "st,no-lsfs-fb-cap")) + usbphyc_phy->tune |= LFSCAPEN; + + if (of_property_read_bool(np, "st,slow-hs-slew-rate")) + usbphyc_phy->tune |= HSDRVSLEW; + + ret = of_property_read_u32(np, "st,tune-hs-dc-level", &val); + if (ret != -EINVAL) { + if (!ret && val < DC_MAX) { + if (val == DC_MINUS_5_TO_7_MV) {/* Decreases HS driver DC level */ + usbphyc_phy->tune |= HSDRVDCCUR; + } else if (val > 0) { /* Increases HS driver DC level */ + val = (val == DC_PLUS_10_TO_14_MV) ? 1 : 0; + usbphyc_phy->tune |= HSDRVCURINCR | FIELD_PREP(HSDRVDCLEV, val); + } + } else { + dev_warn(usbphyc->dev, "phy%d: invalid st,tune-hs-dc-level\n", index); + } + } + + if (of_property_read_bool(np, "st,enable-fs-rftime-tuning")) + usbphyc_phy->tune |= FSDRVRFADJ; + + if (of_property_read_bool(np, "st,enable-hs-rftime-reduction")) + usbphyc_phy->tune |= HSDRVRFRED; + + ret = of_property_read_u32(np, "st,trim-hs-current", &val); + if (ret != -EINVAL) { + if (!ret && val < CUR_MAX) + usbphyc_phy->tune |= FIELD_PREP(HSDRVCHKITRM, val); + else + dev_warn(usbphyc->dev, "phy%d: invalid st,trim-hs-current\n", index); + } + + ret = of_property_read_u32(np, "st,trim-hs-impedance", &val); + if (ret != -EINVAL) { + if (!ret && val < IMP_MAX) + usbphyc_phy->tune |= FIELD_PREP(HSDRVCHKZTRM, val); + else + dev_warn(usbphyc->dev, "phy%d: invalid st,trim-hs-impedance\n", index); + } + + ret = of_property_read_u32(np, "st,tune-squelch-level", &val); + if (ret != -EINVAL) { + if (!ret && val < SQLCH_MAX) + usbphyc_phy->tune |= FIELD_PREP(SQLCHCTL, val); + else + dev_warn(usbphyc->dev, "phy%d: invalid st,tune-squelch\n", index); + } + + if (of_property_read_bool(np, "st,enable-hs-rx-gain-eq")) + usbphyc_phy->tune |= HDRXGNEQEN; + + ret = of_property_read_u32(np, "st,tune-hs-rx-offset", &val); + if (ret != -EINVAL) { + if (!ret && val < RX_OFFSET_MAX) + usbphyc_phy->tune |= FIELD_PREP(HSRXOFF, val); + else + dev_warn(usbphyc->dev, "phy%d: invalid st,tune-hs-rx-offset\n", index); + } + + if (of_property_read_bool(np, "st,no-hs-ftime-ctrl")) + usbphyc_phy->tune |= HSFALLPREEM; + + if (!of_property_read_bool(np, "st,no-lsfs-sc")) + usbphyc_phy->tune |= SHTCCTCTLPROT; + + if (of_property_read_bool(np, "st,enable-hs-tx-staggering")) + usbphyc_phy->tune |= STAGSEL; + + /* Restore OTP compensation code */ + usbphyc_phy->tune |= FIELD_PREP(OTPCOMP, otpcomp); + + /* + * By default, if no st,xxx tuning property is used, usbphyc_phy->tune is equal to + * STM32_USBPHYC_TUNE reset value (LFSCAPEN | SHTCCTCTLPROT | OTPCOMP). + */ + writel_relaxed(usbphyc_phy->tune, usbphyc->base + reg); +} + static void stm32_usbphyc_switch_setup(struct stm32_usbphyc *usbphyc, u32 utmi_switch) { @@ -550,6 +730,9 @@ static int stm32_usbphyc_probe(struct platform_device *pdev) usbphyc->phys[port]->vbus = NULL; } + /* Configure phy tuning */ + stm32_usbphyc_phy_tuning(usbphyc, child, index); + port++; } @@ -598,6 +781,25 @@ static int stm32_usbphyc_remove(struct platform_device *pdev) return 0; } +static int __maybe_unused stm32_usbphyc_resume(struct device *dev) +{ + struct stm32_usbphyc *usbphyc = dev_get_drvdata(dev); + struct stm32_usbphyc_phy *usbphyc_phy; + int port; + + if (usbphyc->switch_setup >= 0) + stm32_usbphyc_switch_setup(usbphyc, usbphyc->switch_setup); + + for (port = 0; port < usbphyc->nphys; port++) { + usbphyc_phy = usbphyc->phys[port]; + writel_relaxed(usbphyc_phy->tune, usbphyc->base + STM32_USBPHYC_TUNE(port)); + } + + return 0; +} + +static SIMPLE_DEV_PM_OPS(stm32_usbphyc_pm_ops, NULL, stm32_usbphyc_resume); + static const struct of_device_id stm32_usbphyc_of_match[] = { { .compatible = "st,stm32mp1-usbphyc", }, { }, @@ -610,6 +812,7 @@ static struct platform_driver stm32_usbphyc_driver = { .driver = { .of_match_table = stm32_usbphyc_of_match, .name = "stm32-usbphyc", + .pm = &stm32_usbphyc_pm_ops, } }; module_platform_driver(stm32_usbphyc_driver); diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c index 5fd2e8a08bfc..d0ab69750c6b 100644 --- a/drivers/phy/ti/phy-gmii-sel.c +++ b/drivers/phy/ti/phy-gmii-sel.c @@ -320,6 +320,8 @@ static int phy_gmii_sel_init_ports(struct phy_gmii_sel_priv *priv) u64 size; offset = of_get_address(dev->of_node, 0, &size, NULL); + if (!offset) + return -EINVAL; priv->num_ports = size / sizeof(u32); if (!priv->num_ports) return -EINVAL; |