diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-30 09:22:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-30 09:22:00 -0700 |
| commit | 034dd340b08be1f2f0477ad16131d609f9dbd53c (patch) | |
| tree | 2536f4b2d7893ccd916b5abdf3c454ad6edc03c2 /drivers/phy/qualcomm/phy-qcom-edp.c | |
| download | linux-stable-034dd340b08be1f2f0477ad16131d609f9dbd53c.tar.gz linux-stable-034dd340b08be1f2f0477ad16131d609f9dbd53c.zip | |
Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted
Pull tracing fixes from Steven Rostedt:
- Fix error output of boot instance creation failure
Currently if a boot instance creation fails, instead of printing out
the name of the instance that failed, it prints "(null)". That is
because it prints "cur_str" that had already been processed by
strsep(). Print the saved name instead.
While at it, print the error code of the failure.
- Fix use-after-free for same named historgrams
Histograms can be named so that they can be used in multiple events.
But if the named histogram has a variable attached, the second event
that uses the named histogram which duplicates it and needs to free
the original after duplication leaves the old variable in place and
still visible. If another histogram uses than variable, it will use
the stale one which will try to reference the freed duplicate
histogram and crash the kernel.
Free the duplicate variables along with the duplicated histogram
data.
- Check return value of kthread_run() in event self test
The events self tests uses a kthread for testing but does not check
if it succeeded in creating a kthread. If the kthread creation were
to fail, the code will still try to call kthread_stop() on the error
returned.
- Fix race between reading trace_pipe and updating subbuffer size
If a user is reading the trace_pipe file at the same time they update
the ring buffer sub-buffer size, can cause the trace_pipe read to
read stale data. Add trace_access_lock() around updating the ring
buffer sub-buffer size.
- Fix eventfs_inode on failure path in creation of the events directory
In the creation of the "events" directory, if after allocating the
eventfs_inode a failure is detected, it calls cleanup_ei() which
calls free_ei(). The free_ei() will test if eventfs_inode being freed
has no children. It is a bug if it does. But on the failure case of
the creation of the "events" directory, the children lists have not
yet been initialized and the free will trigger a warning because
list_empty() on an uninitialized list returns false.
Move the initialization into init_ei() where it makes more sense and
makes sure that a created eventfs_inode has its lists initialized
upon creation.
- Check return value of kthread_run() in ftrace direct sample code
The sample code that shows how to use the ftrace direct calls does
not test the return of kthread_run() to see if it succeeds. Return a
failure if the kthread_run() doesn't succeed.
- Clear user events state on fork in case of alloc failure
On fork, the child gets a pointer to the parent's user events state.
It makes a copy of it then updates the child's pointer to it. But if
the allocation fails, the duplication function leaves the child with
a pointer to its parent's descriptor. When the child cleans up its
data, it will free the parent's descriptor while the parent is still
using it.
In the duplication function, set the child's user_event_mm to NULL
before testing if the allocation succeeded, and when it exits it will
not free the parent's descriptor.
- Fix retry exhaustion in simple ring buffer reader swap
simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
post-decrements it only after a failed link replacement. On the final
attempt, a successful replacement leaves retry at zero, while a
failed replacement leaves it at -1.
But the check for success expects the retry value to be non-zero and
exits with an error on zero. This is the opposite result. Fix it.
- Fail nicely when the remote swap_reader_page() returns an error
Currently, if the swap_reader_page() of a remote buffer fails, it
triggers a WARN_ON_ONCE() and continues normally. Instead, have it
exit with an error and a pr_warn() print instead of a full WARNING.
* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Stop remote reader update when page swap fails
tracing: Fix retry exhaustion in simple ring buffer reader swap
tracing/user_events: Clear copied tracing state before fork duplication
samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
eventfs: Initialize ei->children and ei->list in init_ei()
tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
tracing: Fix crash passing ERR_PTR to kthread_stop()
tracing: Fix use-after-free with same-name named triggers
tracing: Fix logged instance name on creation failure
Diffstat (limited to 'drivers/phy/qualcomm/phy-qcom-edp.c')
| -rw-r--r-- | drivers/phy/qualcomm/phy-qcom-edp.c | 1508 |
1 files changed, 1508 insertions, 0 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c new file mode 100644 index 000000000..a3c893f72 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -0,0 +1,1508 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2017, 2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2021, Linaro Ltd. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/phy/phy-dp.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/reset.h> +#include <linux/slab.h> + +#include <dt-bindings/phy/phy.h> + +#include "phy-qcom-qmp-dp-phy.h" +#include "phy-qcom-qmp-qserdes-com-v4.h" +#include "phy-qcom-qmp-qserdes-com-v6.h" + +#include "phy-qcom-qmp-qserdes-dp-com-v8.h" + +/* EDP_PHY registers */ +#define DP_PHY_CFG 0x0010 +#define DP_PHY_CFG_1 0x0014 +#define DP_PHY_PD_CTL 0x001c +#define DP_PHY_MODE 0x0020 + +#define DP_AUX_CFG_SIZE 13 +#define DP_PHY_AUX_CFG(n) (0x24 + (0x04 * (n))) + +#define DP_PHY_AUX_INTERRUPT_MASK 0x0058 + +#define DP_PHY_VCO_DIV 0x0074 +#define DP_PHY_TX0_TX1_LANE_CTL 0x007c +#define DP_PHY_TX2_TX3_LANE_CTL 0x00a0 + +#define DP_PHY_STATUS 0x00e0 + +/* LANE_TXn registers */ +#define TXn_CLKBUF_ENABLE 0x0000 +#define TXn_TX_EMP_POST1_LVL 0x0004 + +#define TXn_TX_DRV_LVL 0x0014 +#define TXn_TX_DRV_LVL_OFFSET 0x0018 +#define TXn_RESET_TSYNC_EN 0x001c +#define TXn_LDO_CONFIG 0x0084 +#define TXn_TX_BAND 0x0028 + +#define TXn_RES_CODE_LANE_OFFSET_TX0 0x0044 +#define TXn_RES_CODE_LANE_OFFSET_TX1 0x0048 + +#define TXn_TRANSCEIVER_BIAS_EN 0x0054 +#define TXn_HIGHZ_DRVR_EN 0x0058 +#define TXn_TX_POL_INV 0x005c +#define TXn_LANE_MODE_1 0x0064 + +#define TXn_TRAN_DRVR_EMP_EN 0x0078 + +struct qcom_edp_swing_pre_emph_cfg { + const u8 (*swing_hbr_rbr)[4][4]; + const u8 (*swing_hbr3_hbr2)[4][4]; + const u8 (*pre_emphasis_hbr_rbr)[4][4]; + const u8 (*pre_emphasis_hbr3_hbr2)[4][4]; +}; + +struct qcom_edp; + +struct phy_ver_ops { + int (*com_power_on)(const struct qcom_edp *edp); + int (*com_resetsm_cntrl)(const struct qcom_edp *edp); + int (*com_bias_en_clkbuflr)(const struct qcom_edp *edp); + int (*com_clk_fwd_cfg)(const struct qcom_edp *edp); + int (*com_configure_pll)(const struct qcom_edp *edp); + int (*com_configure_ssc)(const struct qcom_edp *edp); + int (*com_ldo_config)(const struct qcom_edp *edp); +}; + +struct qcom_edp_phy_cfg { + bool is_edp; + const u8 *aux_cfg; + const u8 *vco_div_cfg; + const struct qcom_edp_swing_pre_emph_cfg *dp_swing_pre_emph_cfg; + const struct qcom_edp_swing_pre_emph_cfg *edp_swing_pre_emph_cfg; + const struct phy_ver_ops *ver_ops; +}; + +struct qcom_edp { + struct device *dev; + const struct qcom_edp_phy_cfg *cfg; + + struct phy *phy; + + void __iomem *edp; + void __iomem *tx0; + void __iomem *tx1; + void __iomem *pll; + + struct clk_hw dp_link_hw; + struct clk_hw dp_pixel_hw; + + struct phy_configure_opts_dp dp_opts; + + struct clk_bulk_data *clks; + int num_clks; + + struct regulator_bulk_data supplies[2]; + + bool is_edp; +}; + +static const u8 dp_swing_hbr_rbr[4][4] = { + { 0x07, 0x0f, 0x16, 0x1f }, + { 0x11, 0x1e, 0x1f, 0xff }, + { 0x16, 0x1f, 0xff, 0xff }, + { 0x1f, 0xff, 0xff, 0xff } +}; + +static const u8 dp_pre_emp_hbr_rbr[4][4] = { + { 0x00, 0x0e, 0x15, 0x1a }, + { 0x00, 0x0e, 0x15, 0xff }, + { 0x00, 0x0e, 0xff, 0xff }, + { 0x04, 0xff, 0xff, 0xff } +}; + +static const u8 dp_swing_hbr2_hbr3[4][4] = { + { 0x02, 0x12, 0x16, 0x1a }, + { 0x09, 0x19, 0x1f, 0xff }, + { 0x10, 0x1f, 0xff, 0xff }, + { 0x1f, 0xff, 0xff, 0xff } +}; + +static const u8 dp_pre_emp_hbr2_hbr3[4][4] = { + { 0x00, 0x0c, 0x15, 0x1b }, + { 0x02, 0x0e, 0x16, 0xff }, + { 0x02, 0x11, 0xff, 0xff }, + { 0x04, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg = { + .swing_hbr_rbr = &dp_swing_hbr_rbr, + .swing_hbr3_hbr2 = &dp_swing_hbr2_hbr3, + .pre_emphasis_hbr_rbr = &dp_pre_emp_hbr_rbr, + .pre_emphasis_hbr3_hbr2 = &dp_pre_emp_hbr2_hbr3, +}; + +static const u8 dp_pre_emp_hbr_rbr_v8[4][4] = { + { 0x00, 0x0e, 0x15, 0x1a }, + { 0x00, 0x0e, 0x15, 0xff }, + { 0x00, 0x0e, 0xff, 0xff }, + { 0x00, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg_v8 = { + .swing_hbr_rbr = &dp_swing_hbr_rbr, + .swing_hbr3_hbr2 = &dp_swing_hbr2_hbr3, + .pre_emphasis_hbr_rbr = &dp_pre_emp_hbr_rbr_v8, + .pre_emphasis_hbr3_hbr2 = &dp_pre_emp_hbr2_hbr3, +}; + +static const u8 dp_swing_hbr2_hbr3_v2[4][4] = { + { 0x27, 0x2f, 0x36, 0xff }, + { 0x31, 0x3e, 0x3f, 0xff }, + { 0x3a, 0x3f, 0xff, 0xff }, + { 0xff, 0xff, 0xff, 0xff } +}; + +static const u8 dp_pre_emp_hbr2_hbr3_v2[4][4] = { + { 0x20, 0x2e, 0x35, 0xff }, + { 0x20, 0x2e, 0x35, 0xff }, + { 0x20, 0x2e, 0xff, 0xff }, + { 0xff, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg dp_phy_swing_pre_emph_cfg_v2 = { + /* + * NOTE: The HPG does not specify a separate swing_hbr_rbr table. + * Reuse the HBR2/HBR3 table for now. + * + * TODO: Update this once the HPG explicitly defines RBR/HBR swing values. + */ + .swing_hbr_rbr = &dp_swing_hbr2_hbr3_v2, + .swing_hbr3_hbr2 = &dp_swing_hbr2_hbr3_v2, + .pre_emphasis_hbr_rbr = &dp_pre_emp_hbr2_hbr3_v2, + .pre_emphasis_hbr3_hbr2 = &dp_pre_emp_hbr2_hbr3_v2, +}; + +static const u8 edp_swing_hbr_rbr[4][4] = { + { 0x07, 0x0f, 0x16, 0x1f }, + { 0x0d, 0x16, 0x1e, 0xff }, + { 0x11, 0x1b, 0xff, 0xff }, + { 0x16, 0xff, 0xff, 0xff } +}; + +static const u8 edp_pre_emp_hbr_rbr[4][4] = { + { 0x05, 0x11, 0x17, 0x1d }, + { 0x05, 0x11, 0x18, 0xff }, + { 0x06, 0x11, 0xff, 0xff }, + { 0x00, 0xff, 0xff, 0xff } +}; + +static const u8 edp_swing_hbr2_hbr3[4][4] = { + { 0x0b, 0x11, 0x17, 0x1c }, + { 0x10, 0x19, 0x1f, 0xff }, + { 0x19, 0x1f, 0xff, 0xff }, + { 0x1f, 0xff, 0xff, 0xff } +}; + +static const u8 edp_pre_emp_hbr2_hbr3[4][4] = { + { 0x0c, 0x15, 0x19, 0x1e }, + { 0x0b, 0x15, 0x19, 0xff }, + { 0x0e, 0x14, 0xff, 0xff }, + { 0x0d, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg = { + .swing_hbr_rbr = &edp_swing_hbr_rbr, + .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3, + .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr, + .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3, +}; + +static const u8 edp_phy_aux_cfg_v4[DP_AUX_CFG_SIZE] = { + 0x00, 0x13, 0x24, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03, 0x02, 0x02, 0x00, +}; + +static const u8 edp_phy_vco_div_cfg_v4[4] = { + 0x01, 0x01, 0x02, 0x00, +}; + +static const u8 edp_pre_emp_hbr_rbr_v2[4][4] = { + { 0x05, 0x12, 0x17, 0x1d }, + { 0x05, 0x11, 0x18, 0xff }, + { 0x06, 0x11, 0xff, 0xff }, + { 0x00, 0xff, 0xff, 0xff } +}; + +static const u8 edp_pre_emp_hbr2_hbr3_v2[4][4] = { + { 0x0c, 0x15, 0x19, 0x1e }, + { 0x08, 0x15, 0x19, 0xff }, + { 0x0e, 0x14, 0xff, 0xff }, + { 0x0d, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg_v2 = { + .swing_hbr_rbr = &edp_swing_hbr_rbr, + .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3, + .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr_v2, + .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3_v2, +}; + +static const u8 edp_swing_hbr2_hbr3_v3[4][4] = { + { 0x06, 0x11, 0x16, 0x1b }, + { 0x0b, 0x19, 0x1f, 0xff }, + { 0x18, 0x1f, 0xff, 0xff }, + { 0x1f, 0xff, 0xff, 0xff } +}; + +static const u8 edp_pre_emp_hbr2_hbr3_v3[4][4] = { + { 0x0c, 0x15, 0x19, 0x1e }, + { 0x09, 0x14, 0x19, 0xff }, + { 0x0f, 0x14, 0xff, 0xff }, + { 0x0d, 0xff, 0xff, 0xff } +}; + +static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg_v3 = { + .swing_hbr_rbr = &edp_swing_hbr_rbr, + .swing_hbr3_hbr2 = &edp_swing_hbr2_hbr3_v3, + .pre_emphasis_hbr_rbr = &edp_pre_emp_hbr_rbr, + .pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3_v3, +}; + +static const u8 edp_phy_aux_cfg_v5[DP_AUX_CFG_SIZE] = { + 0x00, 0x13, 0xa4, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03, 0x02, 0x02, 0x00, +}; + +static const u8 edp_phy_aux_cfg_v8[DP_AUX_CFG_SIZE] = { + 0x00, 0x00, 0xa0, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03, 0x02, 0x02, 0x04, +}; + +static const u8 edp_phy_vco_div_cfg_v8[4] = { + 0x00, 0x00, 0x02, 0x01, +}; + +static int qcom_edp_phy_init(struct phy *phy) +{ + struct qcom_edp *edp = phy_get_drvdata(phy); + u8 aux_cfg[DP_AUX_CFG_SIZE]; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies); + if (ret) + return ret; + + ret = clk_bulk_prepare_enable(edp->num_clks, edp->clks); + if (ret) + goto out_disable_supplies; + + memcpy(aux_cfg, edp->cfg->aux_cfg, sizeof(aux_cfg)); + + ret = edp->cfg->ver_ops->com_clk_fwd_cfg(edp); + if (ret) + return ret; + + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | + DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, + edp->edp + DP_PHY_PD_CTL); + + ret = edp->cfg->ver_ops->com_bias_en_clkbuflr(edp); + if (ret) + return ret; + + writel(DP_PHY_PD_CTL_PSR_PWRDN, edp->edp + DP_PHY_PD_CTL); + msleep(20); + + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | + DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | + DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, + edp->edp + DP_PHY_PD_CTL); + + if (!edp->is_edp) + aux_cfg[8] = 0xb7; + + writel(0xfc, edp->edp + DP_PHY_MODE); + + for (int i = 0; i < DP_AUX_CFG_SIZE; i++) + writel(aux_cfg[i], edp->edp + DP_PHY_AUX_CFG(i)); + + writel(PHY_AUX_STOP_ERR_MASK | PHY_AUX_DEC_ERR_MASK | + PHY_AUX_SYNC_ERR_MASK | PHY_AUX_ALIGN_ERR_MASK | + PHY_AUX_REQ_ERR_MASK, edp->edp + DP_PHY_AUX_INTERRUPT_MASK); + + msleep(20); + + return 0; + +out_disable_supplies: + regulator_bulk_disable(ARRAY_SIZE(edp->supplies), edp->supplies); + + return ret; +} + +static int qcom_edp_set_voltages(struct qcom_edp *edp, const struct phy_configure_opts_dp *dp_opts) +{ + const struct qcom_edp_swing_pre_emph_cfg *cfg; + unsigned int v_level = 0; + unsigned int p_level = 0; + int ret; + u8 swing; + u8 emph; + int i; + + if (edp->is_edp) + cfg = edp->cfg->edp_swing_pre_emph_cfg; + else + cfg = edp->cfg->dp_swing_pre_emph_cfg; + + for (i = 0; i < dp_opts->lanes; i++) { + v_level = max(v_level, dp_opts->voltage[i]); + p_level = max(p_level, dp_opts->pre[i]); + } + + if (dp_opts->link_rate <= 2700) { + swing = (*cfg->swing_hbr_rbr)[v_level][p_level]; + emph = (*cfg->pre_emphasis_hbr_rbr)[v_level][p_level]; + } else { + swing = (*cfg->swing_hbr3_hbr2)[v_level][p_level]; + emph = (*cfg->pre_emphasis_hbr3_hbr2)[v_level][p_level]; + } + + if (swing == 0xff || emph == 0xff) + return -EINVAL; + + ret = edp->cfg->ver_ops->com_ldo_config(edp); + if (ret) + return ret; + + writel(swing, edp->tx0 + TXn_TX_DRV_LVL); + writel(emph, edp->tx0 + TXn_TX_EMP_POST1_LVL); + + writel(swing, edp->tx1 + TXn_TX_DRV_LVL); + writel(emph, edp->tx1 + TXn_TX_EMP_POST1_LVL); + + return 0; +} + +static int qcom_edp_phy_configure(struct phy *phy, union phy_configure_opts *opts) +{ + const struct phy_configure_opts_dp *dp_opts = &opts->dp; + struct qcom_edp *edp = phy_get_drvdata(phy); + int ret = 0; + + memcpy(&edp->dp_opts, dp_opts, sizeof(*dp_opts)); + + if (dp_opts->set_voltages) + ret = qcom_edp_set_voltages(edp, dp_opts); + + return ret; +} + +static int qcom_edp_configure_ssc(const struct qcom_edp *edp) +{ + return edp->cfg->ver_ops->com_configure_ssc(edp); +} + +static int qcom_edp_configure_pll(const struct qcom_edp *edp) +{ + return edp->cfg->ver_ops->com_configure_pll(edp); +} + +static int qcom_edp_set_vco_div(const struct qcom_edp *edp, unsigned long *pixel_freq) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 vco_div; + + switch (dp_opts->link_rate) { + case 1620: + vco_div = edp->cfg->vco_div_cfg[0]; + *pixel_freq = 1620000000UL / 2; + break; + + case 2700: + vco_div = edp->cfg->vco_div_cfg[1]; + *pixel_freq = 2700000000UL / 2; + break; + + case 5400: + vco_div = edp->cfg->vco_div_cfg[2]; + *pixel_freq = 5400000000UL / 4; + break; + + case 8100: + vco_div = edp->cfg->vco_div_cfg[3]; + *pixel_freq = 8100000000UL / 6; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(vco_div, edp->edp + DP_PHY_VCO_DIV); + + return 0; +} + +static int qcom_edp_phy_power_on_v4(const struct qcom_edp *edp) +{ + u32 val; + + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | + DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | + DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, + edp->edp + DP_PHY_PD_CTL); + writel(0xfc, edp->edp + DP_PHY_MODE); + + return readl_poll_timeout(edp->pll + QSERDES_V4_COM_CMN_STATUS, + val, val & BIT(7), 5, 200); +} + +static int qcom_edp_phy_com_resetsm_cntrl_v4(const struct qcom_edp *edp) +{ + u32 val; + + writel(0x20, edp->pll + QSERDES_V4_COM_RESETSM_CNTRL); + + return readl_poll_timeout(edp->pll + QSERDES_V4_COM_C_READY_STATUS, + val, val & BIT(0), 500, 10000); +} + +static int qcom_edp_com_clk_fwd_cfg_v4(const struct qcom_edp *edp) +{ + return 0; +} + +static int qcom_edp_com_bias_en_clkbuflr_v4(const struct qcom_edp *edp) +{ + /* Turn on BIAS current for PHY/PLL */ + writel(0x17, edp->pll + QSERDES_V4_COM_BIAS_EN_CLKBUFLR_EN); + + return 0; +} + +static int qcom_edp_com_configure_ssc_v4(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 step1; + u32 step2; + + switch (dp_opts->link_rate) { + case 1620: + case 2700: + case 8100: + step1 = 0x45; + step2 = 0x06; + break; + + case 5400: + step1 = 0x5c; + step2 = 0x08; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + QSERDES_V4_COM_SSC_EN_CENTER); + writel(0x00, edp->pll + QSERDES_V4_COM_SSC_ADJ_PER1); + writel(0x36, edp->pll + QSERDES_V4_COM_SSC_PER1); + writel(0x01, edp->pll + QSERDES_V4_COM_SSC_PER2); + writel(step1, edp->pll + QSERDES_V4_COM_SSC_STEP_SIZE1_MODE0); + writel(step2, edp->pll + QSERDES_V4_COM_SSC_STEP_SIZE2_MODE0); + + return 0; +} + +static int qcom_edp_com_configure_pll_v4(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 div_frac_start2_mode0; + u32 div_frac_start3_mode0; + u32 dec_start_mode0; + u32 lock_cmp1_mode0; + u32 lock_cmp2_mode0; + u32 hsclk_sel; + + switch (dp_opts->link_rate) { + case 1620: + hsclk_sel = 0x5; + dec_start_mode0 = 0x69; + div_frac_start2_mode0 = 0x80; + div_frac_start3_mode0 = 0x07; + lock_cmp1_mode0 = 0x6f; + lock_cmp2_mode0 = 0x08; + break; + + case 2700: + hsclk_sel = 0x3; + dec_start_mode0 = 0x69; + div_frac_start2_mode0 = 0x80; + div_frac_start3_mode0 = 0x07; + lock_cmp1_mode0 = 0x0f; + lock_cmp2_mode0 = 0x0e; + break; + + case 5400: + hsclk_sel = 0x1; + dec_start_mode0 = 0x8c; + div_frac_start2_mode0 = 0x00; + div_frac_start3_mode0 = 0x0a; + lock_cmp1_mode0 = 0x1f; + lock_cmp2_mode0 = 0x1c; + break; + + case 8100: + hsclk_sel = 0x0; + dec_start_mode0 = 0x69; + div_frac_start2_mode0 = 0x80; + div_frac_start3_mode0 = 0x07; + lock_cmp1_mode0 = 0x2f; + lock_cmp2_mode0 = 0x2a; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + QSERDES_V4_COM_SVS_MODE_CLK_SEL); + writel(0x0b, edp->pll + QSERDES_V4_COM_SYSCLK_EN_SEL); + writel(0x02, edp->pll + QSERDES_V4_COM_SYS_CLK_CTRL); + writel(0x0c, edp->pll + QSERDES_V4_COM_CLK_ENABLE1); + writel(0x06, edp->pll + QSERDES_V4_COM_SYSCLK_BUF_ENABLE); + writel(0x30, edp->pll + QSERDES_V4_COM_CLK_SELECT); + writel(hsclk_sel, edp->pll + QSERDES_V4_COM_HSCLK_SEL); + writel(0x0f, edp->pll + QSERDES_V4_COM_PLL_IVCO); + writel(0x08, edp->pll + QSERDES_V4_COM_LOCK_CMP_EN); + writel(0x36, edp->pll + QSERDES_V4_COM_PLL_CCTRL_MODE0); + writel(0x16, edp->pll + QSERDES_V4_COM_PLL_RCTRL_MODE0); + writel(0x06, edp->pll + QSERDES_V4_COM_CP_CTRL_MODE0); + writel(dec_start_mode0, edp->pll + QSERDES_V4_COM_DEC_START_MODE0); + writel(0x00, edp->pll + QSERDES_V4_COM_DIV_FRAC_START1_MODE0); + writel(div_frac_start2_mode0, edp->pll + QSERDES_V4_COM_DIV_FRAC_START2_MODE0); + writel(div_frac_start3_mode0, edp->pll + QSERDES_V4_COM_DIV_FRAC_START3_MODE0); + writel(0x02, edp->pll + QSERDES_V4_COM_CMN_CONFIG); + writel(0x3f, edp->pll + QSERDES_V4_COM_INTEGLOOP_GAIN0_MODE0); + writel(0x00, edp->pll + QSERDES_V4_COM_INTEGLOOP_GAIN1_MODE0); + writel(0x00, edp->pll + QSERDES_V4_COM_VCO_TUNE_MAP); + writel(lock_cmp1_mode0, edp->pll + QSERDES_V4_COM_LOCK_CMP1_MODE0); + writel(lock_cmp2_mode0, edp->pll + QSERDES_V4_COM_LOCK_CMP2_MODE0); + + writel(0x0a, edp->pll + QSERDES_V4_COM_BG_TIMER); + writel(0x14, edp->pll + QSERDES_V4_COM_CORECLK_DIV_MODE0); + writel(0x00, edp->pll + QSERDES_V4_COM_VCO_TUNE_CTRL); + writel(0x17, edp->pll + QSERDES_V4_COM_BIAS_EN_CLKBUFLR_EN); + writel(0x0f, edp->pll + QSERDES_V4_COM_CORE_CLK_EN); + writel(0xa0, edp->pll + QSERDES_V4_COM_VCO_TUNE1_MODE0); + writel(0x03, edp->pll + QSERDES_V4_COM_VCO_TUNE2_MODE0); + + return 0; +} + +static int qcom_edp_ldo_config_v3(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 ldo_config; + + if (!edp->is_edp) + ldo_config = 0x0; + else if (dp_opts->link_rate <= 2700) + ldo_config = 0x81; + else + ldo_config = 0x41; + + writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); + writel(dp_opts->lanes > 2 ? ldo_config : 0x00, edp->tx1 + TXn_LDO_CONFIG); + + return 0; +} + +static int qcom_edp_ldo_config_v4(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 ldo_config; + + if (!edp->is_edp) + ldo_config = 0x0; + else if (dp_opts->link_rate <= 2700) + ldo_config = 0xc1; + else + ldo_config = 0x81; + + writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); + writel(dp_opts->lanes > 2 ? ldo_config : 0x00, edp->tx1 + TXn_LDO_CONFIG); + + return 0; +} + +static const struct phy_ver_ops qcom_edp_phy_ops_v3 = { + .com_power_on = qcom_edp_phy_power_on_v4, + .com_resetsm_cntrl = qcom_edp_phy_com_resetsm_cntrl_v4, + .com_bias_en_clkbuflr = qcom_edp_com_bias_en_clkbuflr_v4, + .com_clk_fwd_cfg = qcom_edp_com_clk_fwd_cfg_v4, + .com_configure_pll = qcom_edp_com_configure_pll_v4, + .com_configure_ssc = qcom_edp_com_configure_ssc_v4, + .com_ldo_config = qcom_edp_ldo_config_v3, +}; + +static const struct phy_ver_ops qcom_edp_phy_ops_v4 = { + .com_power_on = qcom_edp_phy_power_on_v4, + .com_resetsm_cntrl = qcom_edp_phy_com_resetsm_cntrl_v4, + .com_bias_en_clkbuflr = qcom_edp_com_bias_en_clkbuflr_v4, + .com_clk_fwd_cfg = qcom_edp_com_clk_fwd_cfg_v4, + .com_configure_pll = qcom_edp_com_configure_pll_v4, + .com_configure_ssc = qcom_edp_com_configure_ssc_v4, + .com_ldo_config = qcom_edp_ldo_config_v4, +}; + +static const struct qcom_edp_phy_cfg sa8775p_dp_phy_cfg = { + .is_edp = false, + .aux_cfg = edp_phy_aux_cfg_v5, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, + .ver_ops = &qcom_edp_phy_ops_v4, +}; + +static const struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = { + .aux_cfg = edp_phy_aux_cfg_v4, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg_v3, + .ver_ops = &qcom_edp_phy_ops_v3, +}; + +static const struct qcom_edp_phy_cfg sc8180x_dp_phy_cfg = { + .aux_cfg = edp_phy_aux_cfg_v4, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg_v2, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg_v2, + .ver_ops = &qcom_edp_phy_ops_v3, +}; + +static const struct qcom_edp_phy_cfg sc8280xp_dp_phy_cfg = { + .aux_cfg = edp_phy_aux_cfg_v4, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, + .ver_ops = &qcom_edp_phy_ops_v4, +}; + +static const struct qcom_edp_phy_cfg sc8280xp_edp_phy_cfg = { + .is_edp = true, + .aux_cfg = edp_phy_aux_cfg_v4, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, + .ver_ops = &qcom_edp_phy_ops_v4, +}; + +static int qcom_edp_phy_power_on_v6(const struct qcom_edp *edp) +{ + u32 val; + + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | + DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | + DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, + edp->edp + DP_PHY_PD_CTL); + writel(0xfc, edp->edp + DP_PHY_MODE); + + return readl_poll_timeout(edp->pll + QSERDES_V6_COM_CMN_STATUS, + val, val & BIT(7), 5, 200); +} + +static int qcom_edp_phy_com_resetsm_cntrl_v6(const struct qcom_edp *edp) +{ + u32 val; + + writel(0x20, edp->pll + QSERDES_V6_COM_RESETSM_CNTRL); + + return readl_poll_timeout(edp->pll + QSERDES_V6_COM_C_READY_STATUS, + val, val & BIT(0), 500, 10000); +} + +static int qcom_edp_com_bias_en_clkbuflr_v6(const struct qcom_edp *edp) +{ + /* Turn on BIAS current for PHY/PLL */ + writel(0x1f, edp->pll + QSERDES_V6_COM_PLL_BIAS_EN_CLK_BUFLR_EN); + + return 0; +} + +static int qcom_edp_com_configure_ssc_v6(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 step1; + u32 step2; + + switch (dp_opts->link_rate) { + case 1620: + case 2700: + case 8100: + step1 = 0x92; + step2 = 0x01; + break; + + case 5400: + step1 = 0x18; + step2 = 0x02; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + QSERDES_V6_COM_SSC_EN_CENTER); + writel(0x00, edp->pll + QSERDES_V6_COM_SSC_ADJ_PER1); + writel(0x36, edp->pll + QSERDES_V6_COM_SSC_PER1); + writel(0x01, edp->pll + QSERDES_V6_COM_SSC_PER2); + writel(step1, edp->pll + QSERDES_V6_COM_SSC_STEP_SIZE1_MODE0); + writel(step2, edp->pll + QSERDES_V6_COM_SSC_STEP_SIZE2_MODE0); + + return 0; +} + +static int qcom_edp_com_configure_pll_v6(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 div_frac_start2_mode0; + u32 div_frac_start3_mode0; + u32 dec_start_mode0; + u32 lock_cmp1_mode0; + u32 lock_cmp2_mode0; + u32 code1_mode0; + u32 code2_mode0; + u32 hsclk_sel; + + switch (dp_opts->link_rate) { + case 1620: + hsclk_sel = 0x5; + dec_start_mode0 = 0x34; + div_frac_start2_mode0 = 0xc0; + div_frac_start3_mode0 = 0x0b; + lock_cmp1_mode0 = 0x37; + lock_cmp2_mode0 = 0x04; + code1_mode0 = 0x71; + code2_mode0 = 0x0c; + break; + + case 2700: + hsclk_sel = 0x3; + dec_start_mode0 = 0x34; + div_frac_start2_mode0 = 0xc0; + div_frac_start3_mode0 = 0x0b; + lock_cmp1_mode0 = 0x07; + lock_cmp2_mode0 = 0x07; + code1_mode0 = 0x71; + code2_mode0 = 0x0c; + break; + + case 5400: + hsclk_sel = 0x1; + dec_start_mode0 = 0x46; + div_frac_start2_mode0 = 0x00; + div_frac_start3_mode0 = 0x05; + lock_cmp1_mode0 = 0x0f; + lock_cmp2_mode0 = 0x0e; + code1_mode0 = 0x97; + code2_mode0 = 0x10; + break; + + case 8100: + hsclk_sel = 0x0; + dec_start_mode0 = 0x34; + div_frac_start2_mode0 = 0xc0; + div_frac_start3_mode0 = 0x0b; + lock_cmp1_mode0 = 0x17; + lock_cmp2_mode0 = 0x15; + code1_mode0 = 0x71; + code2_mode0 = 0x0c; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + QSERDES_V6_COM_SVS_MODE_CLK_SEL); + writel(0x0b, edp->pll + QSERDES_V6_COM_SYSCLK_EN_SEL); + writel(0x02, edp->pll + QSERDES_V6_COM_SYS_CLK_CTRL); + writel(0x0c, edp->pll + QSERDES_V6_COM_CLK_ENABLE1); + writel(0x06, edp->pll + QSERDES_V6_COM_SYSCLK_BUF_ENABLE); + writel(0x30, edp->pll + QSERDES_V6_COM_CLK_SELECT); + writel(hsclk_sel, edp->pll + QSERDES_V6_COM_HSCLK_SEL_1); + writel(0x07, edp->pll + QSERDES_V6_COM_PLL_IVCO); + writel(0x08, edp->pll + QSERDES_V6_COM_LOCK_CMP_EN); + writel(0x36, edp->pll + QSERDES_V6_COM_PLL_CCTRL_MODE0); + writel(0x16, edp->pll + QSERDES_V6_COM_PLL_RCTRL_MODE0); + writel(0x06, edp->pll + QSERDES_V6_COM_CP_CTRL_MODE0); + writel(dec_start_mode0, edp->pll + QSERDES_V6_COM_DEC_START_MODE0); + writel(0x00, edp->pll + QSERDES_V6_COM_DIV_FRAC_START1_MODE0); + writel(div_frac_start2_mode0, edp->pll + QSERDES_V6_COM_DIV_FRAC_START2_MODE0); + writel(div_frac_start3_mode0, edp->pll + QSERDES_V6_COM_DIV_FRAC_START3_MODE0); + writel(0x12, edp->pll + QSERDES_V6_COM_CMN_CONFIG_1); + writel(0x3f, edp->pll + QSERDES_V6_COM_INTEGLOOP_GAIN0_MODE0); + writel(0x00, edp->pll + QSERDES_V6_COM_INTEGLOOP_GAIN1_MODE0); + writel(0x00, edp->pll + QSERDES_V6_COM_VCO_TUNE_MAP); + writel(lock_cmp1_mode0, edp->pll + QSERDES_V6_COM_LOCK_CMP1_MODE0); + writel(lock_cmp2_mode0, edp->pll + QSERDES_V6_COM_LOCK_CMP2_MODE0); + + writel(0x0a, edp->pll + QSERDES_V6_COM_BG_TIMER); + writel(0x14, edp->pll + QSERDES_V6_COM_PLL_CORE_CLK_DIV_MODE0); + writel(0x00, edp->pll + QSERDES_V6_COM_VCO_TUNE_CTRL); + writel(0x1f, edp->pll + QSERDES_V6_COM_PLL_BIAS_EN_CLK_BUFLR_EN); + writel(0x0f, edp->pll + QSERDES_V6_COM_CORE_CLK_EN); + writel(0xa0, edp->pll + QSERDES_V6_COM_VCO_TUNE1_MODE0); + writel(0x03, edp->pll + QSERDES_V6_COM_VCO_TUNE2_MODE0); + + writel(code1_mode0, edp->pll + QSERDES_V6_COM_BIN_VCOCAL_CMP_CODE1_MODE0); + writel(code2_mode0, edp->pll + QSERDES_V6_COM_BIN_VCOCAL_CMP_CODE2_MODE0); + + return 0; +} + +static int qcom_edp_ldo_config_v6(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 ldo_config; + + if (!edp->is_edp) + ldo_config = 0x0; + else if (dp_opts->link_rate <= 2700) + ldo_config = 0x51; + else + ldo_config = 0x91; + + writel(ldo_config, edp->tx0 + TXn_LDO_CONFIG); + writel(dp_opts->lanes > 2 ? ldo_config : 0x00, edp->tx1 + TXn_LDO_CONFIG); + + return 0; +} + +static const struct phy_ver_ops qcom_edp_phy_ops_v6 = { + .com_power_on = qcom_edp_phy_power_on_v6, + .com_resetsm_cntrl = qcom_edp_phy_com_resetsm_cntrl_v6, + .com_bias_en_clkbuflr = qcom_edp_com_bias_en_clkbuflr_v6, + .com_clk_fwd_cfg = qcom_edp_com_clk_fwd_cfg_v4, + .com_configure_pll = qcom_edp_com_configure_pll_v6, + .com_configure_ssc = qcom_edp_com_configure_ssc_v6, + .com_ldo_config = qcom_edp_ldo_config_v6, +}; + +static struct qcom_edp_phy_cfg x1e80100_phy_cfg = { + .aux_cfg = edp_phy_aux_cfg_v4, + .vco_div_cfg = edp_phy_vco_div_cfg_v4, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, + .ver_ops = &qcom_edp_phy_ops_v6, +}; + +static int qcom_edp_com_configure_ssc_v8(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 step1; + u32 step2; + + switch (dp_opts->link_rate) { + case 1620: + case 2700: + case 8100: + step1 = 0x5b; + step2 = 0x02; + break; + + case 5400: + step1 = 0x5b; + step2 = 0x02; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + DP_QSERDES_V8_COM_SSC_EN_CENTER); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_SSC_ADJ_PER1); + writel(0x6b, edp->pll + DP_QSERDES_V8_COM_SSC_PER1); + writel(0x02, edp->pll + DP_QSERDES_V8_COM_SSC_PER2); + writel(step1, edp->pll + DP_QSERDES_V8_COM_SSC_STEP_SIZE1_MODE0); + writel(step2, edp->pll + DP_QSERDES_V8_COM_SSC_STEP_SIZE2_MODE0); + + return 0; +} + +static int qcom_edp_com_configure_pll_v8(const struct qcom_edp *edp) +{ + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + u32 div_frac_start2_mode0; + u32 div_frac_start3_mode0; + u32 dec_start_mode0; + u32 lock_cmp1_mode0; + u32 lock_cmp2_mode0; + u32 code1_mode0; + u32 code2_mode0; + u32 hsclk_sel; + + switch (dp_opts->link_rate) { + case 1620: + hsclk_sel = 0x5; + dec_start_mode0 = 0x34; + div_frac_start2_mode0 = 0xc0; + div_frac_start3_mode0 = 0x0b; + lock_cmp1_mode0 = 0x37; + lock_cmp2_mode0 = 0x04; + code1_mode0 = 0x71; + code2_mode0 = 0x0c; + break; + + case 2700: + hsclk_sel = 0x3; + dec_start_mode0 = 0x34; + div_frac_start2_mode0 = 0xc0; + div_frac_start3_mode0 = 0x0b; + lock_cmp1_mode0 = 0x07; + lock_cmp2_mode0 = 0x07; + code1_mode0 = 0x71; + code2_mode0 = 0x0c; + break; + + case 5400: + case 8100: + hsclk_sel = 0x2; + dec_start_mode0 = 0x4f; + div_frac_start2_mode0 = 0xa0; + div_frac_start3_mode0 = 0x01; + lock_cmp1_mode0 = 0x18; + lock_cmp2_mode0 = 0x15; + code1_mode0 = 0x14; + code2_mode0 = 0x25; + break; + + default: + /* Other link rates aren't supported */ + return -EINVAL; + } + + writel(0x01, edp->pll + DP_QSERDES_V8_COM_SVS_MODE_CLK_SEL); + writel(0x3b, edp->pll + DP_QSERDES_V8_COM_SYSCLK_EN_SEL); + writel(0x02, edp->pll + DP_QSERDES_V8_COM_SYS_CLK_CTRL); + writel(0x0c, edp->pll + DP_QSERDES_V8_COM_CLK_ENABLE1); + writel(0x06, edp->pll + DP_QSERDES_V8_COM_SYSCLK_BUF_ENABLE); + writel(0x30, edp->pll + DP_QSERDES_V8_COM_CLK_SELECT); + writel(hsclk_sel, edp->pll + DP_QSERDES_V8_COM_HSCLK_SEL_1); + writel(0x07, edp->pll + DP_QSERDES_V8_COM_PLL_IVCO); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_LOCK_CMP_EN); + writel(0x36, edp->pll + DP_QSERDES_V8_COM_PLL_CCTRL_MODE0); + writel(0x16, edp->pll + DP_QSERDES_V8_COM_PLL_RCTRL_MODE0); + writel(0x06, edp->pll + DP_QSERDES_V8_COM_CP_CTRL_MODE0); + writel(dec_start_mode0, edp->pll + DP_QSERDES_V8_COM_DEC_START_MODE0); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_DIV_FRAC_START1_MODE0); + writel(div_frac_start2_mode0, edp->pll + DP_QSERDES_V8_COM_DIV_FRAC_START2_MODE0); + writel(div_frac_start3_mode0, edp->pll + DP_QSERDES_V8_COM_DIV_FRAC_START3_MODE0); + writel(0x96, edp->pll + DP_QSERDES_V8_COM_CMN_CONFIG_1); + writel(0x3f, edp->pll + DP_QSERDES_V8_COM_INTEGLOOP_GAIN0_MODE0); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_INTEGLOOP_GAIN1_MODE0); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_VCO_TUNE_MAP); + writel(lock_cmp1_mode0, edp->pll + DP_QSERDES_V8_COM_LOCK_CMP1_MODE0); + writel(lock_cmp2_mode0, edp->pll + DP_QSERDES_V8_COM_LOCK_CMP2_MODE0); + + writel(0x0a, edp->pll + DP_QSERDES_V8_COM_BG_TIMER); + writel(0x0a, edp->pll + DP_QSERDES_V8_COM_CORECLK_DIV_MODE0); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_VCO_TUNE_CTRL); + writel(0x1f, edp->pll + DP_QSERDES_V8_COM_BIAS_EN_CLKBUFLR_EN); + writel(0x00, edp->pll + DP_QSERDES_V8_COM_CORE_CLK_EN); + writel(0xa0, edp->pll + DP_QSERDES_V8_COM_VCO_TUNE1_MODE0); + writel(0x01, edp->pll + DP_QSERDES_V8_COM_VCO_TUNE2_MODE0); + + writel(code1_mode0, edp->pll + DP_QSERDES_V8_COM_BIN_VCOCAL_CMP_CODE1_MODE0); + writel(code2_mode0, edp->pll + DP_QSERDES_V8_COM_BIN_VCOCAL_CMP_CODE2_MODE0); + + return 0; +} + + +static int qcom_edp_phy_com_resetsm_cntrl_v8(const struct qcom_edp *edp) +{ + u32 val; + + writel(0x20, edp->pll + DP_QSERDES_V8_COM_RESETSM_CNTRL); + + return readl_poll_timeout(edp->pll + DP_QSERDES_V8_COM_C_READY_STATUS, + val, val & BIT(0), 500, 10000); +} + +static int qcom_edp_com_clk_fwd_cfg_v8(const struct qcom_edp *edp) +{ + writel(0x3f, edp->pll + DP_QSERDES_V8_COM_CLK_FWD_CONFIG_1); + + return 0; +} + +static int qcom_edp_com_bias_en_clkbuflr_v8(const struct qcom_edp *edp) +{ + /* Turn on BIAS current for PHY/PLL */ + writel(0x1f, edp->pll + DP_QSERDES_V8_COM_BIAS_EN_CLKBUFLR_EN); + + return 0; +} + +static int qcom_edp_phy_power_on_v8(const struct qcom_edp *edp) +{ + u32 val; + + writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | + DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | + DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN, + edp->edp + DP_PHY_PD_CTL); + writel(0xfc, edp->edp + DP_PHY_MODE); + + return readl_poll_timeout(edp->pll + DP_QSERDES_V8_COM_CMN_STATUS, + val, val & BIT(7), 5, 200); +} + +static const struct phy_ver_ops qcom_edp_phy_ops_v8 = { + .com_power_on = qcom_edp_phy_power_on_v8, + .com_resetsm_cntrl = qcom_edp_phy_com_resetsm_cntrl_v8, + .com_bias_en_clkbuflr = qcom_edp_com_bias_en_clkbuflr_v8, + .com_clk_fwd_cfg = qcom_edp_com_clk_fwd_cfg_v8, + .com_configure_pll = qcom_edp_com_configure_pll_v8, + .com_configure_ssc = qcom_edp_com_configure_ssc_v8, + .com_ldo_config = qcom_edp_ldo_config_v6, +}; + +static struct qcom_edp_phy_cfg glymur_phy_cfg = { + .aux_cfg = edp_phy_aux_cfg_v8, + .vco_div_cfg = edp_phy_vco_div_cfg_v8, + .dp_swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg_v8, + .edp_swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg, + .ver_ops = &qcom_edp_phy_ops_v8, +}; + +static int qcom_edp_phy_power_on(struct phy *phy) +{ + const struct qcom_edp *edp = phy_get_drvdata(phy); + u32 bias0_en, drvr0_en, bias1_en, drvr1_en; + unsigned long pixel_freq; + int ret; + u32 val; + u8 cfg1; + + ret = edp->cfg->ver_ops->com_power_on(edp); + if (ret) + return ret; + + ret = edp->cfg->ver_ops->com_ldo_config(edp); + if (ret) + return ret; + + writel(0x00, edp->tx0 + TXn_LANE_MODE_1); + writel(0x00, edp->tx1 + TXn_LANE_MODE_1); + + if (edp->dp_opts.ssc) { + ret = qcom_edp_configure_ssc(edp); + if (ret) + return ret; + } + + ret = qcom_edp_configure_pll(edp); + if (ret) + return ret; + + /* TX Lane configuration */ + writel(0x05, edp->edp + DP_PHY_TX0_TX1_LANE_CTL); + writel(0x05, edp->edp + DP_PHY_TX2_TX3_LANE_CTL); + + /* TX-0 register configuration */ + writel(0x03, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); + writel(0x0f, edp->tx0 + TXn_CLKBUF_ENABLE); + writel(0x03, edp->tx0 + TXn_RESET_TSYNC_EN); + writel(0x01, edp->tx0 + TXn_TRAN_DRVR_EMP_EN); + writel(0x04, edp->tx0 + TXn_TX_BAND); + + /* TX-1 register configuration */ + writel(0x03, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); + writel(0x0f, edp->tx1 + TXn_CLKBUF_ENABLE); + writel(0x03, edp->tx1 + TXn_RESET_TSYNC_EN); + writel(0x01, edp->tx1 + TXn_TRAN_DRVR_EMP_EN); + writel(0x04, edp->tx1 + TXn_TX_BAND); + + ret = qcom_edp_set_vco_div(edp, &pixel_freq); + if (ret) + return ret; + + writel(0x01, edp->edp + DP_PHY_CFG); + writel(0x05, edp->edp + DP_PHY_CFG); + writel(0x01, edp->edp + DP_PHY_CFG); + writel(0x09, edp->edp + DP_PHY_CFG); + + ret = edp->cfg->ver_ops->com_resetsm_cntrl(edp); + if (ret) + return ret; + + writel(0x19, edp->edp + DP_PHY_CFG); + writel(0x1f, edp->tx0 + TXn_HIGHZ_DRVR_EN); + writel(0x04, edp->tx0 + TXn_HIGHZ_DRVR_EN); + writel(0x00, edp->tx0 + TXn_TX_POL_INV); + writel(0x1f, edp->tx1 + TXn_HIGHZ_DRVR_EN); + writel(0x04, edp->tx1 + TXn_HIGHZ_DRVR_EN); + writel(0x00, edp->tx1 + TXn_TX_POL_INV); + writel(0x10, edp->tx0 + TXn_TX_DRV_LVL_OFFSET); + writel(0x10, edp->tx1 + TXn_TX_DRV_LVL_OFFSET); + writel(0x11, edp->tx0 + TXn_RES_CODE_LANE_OFFSET_TX0); + writel(0x11, edp->tx0 + TXn_RES_CODE_LANE_OFFSET_TX1); + writel(0x11, edp->tx1 + TXn_RES_CODE_LANE_OFFSET_TX0); + writel(0x11, edp->tx1 + TXn_RES_CODE_LANE_OFFSET_TX1); + + writel(0x10, edp->tx0 + TXn_TX_EMP_POST1_LVL); + writel(0x10, edp->tx1 + TXn_TX_EMP_POST1_LVL); + writel(0x1f, edp->tx0 + TXn_TX_DRV_LVL); + writel(0x1f, edp->tx1 + TXn_TX_DRV_LVL); + + if (edp->dp_opts.lanes == 1) { + bias0_en = 0x01; + bias1_en = 0x00; + drvr0_en = 0x06; + drvr1_en = 0x07; + cfg1 = 0x1; + } else if (edp->dp_opts.lanes == 2) { + bias0_en = 0x03; + bias1_en = 0x00; + drvr0_en = 0x04; + drvr1_en = 0x07; + cfg1 = 0x3; + } else { + bias0_en = 0x03; + bias1_en = 0x03; + drvr0_en = 0x04; + drvr1_en = 0x04; + cfg1 = 0xf; + } + + writel(drvr0_en, edp->tx0 + TXn_HIGHZ_DRVR_EN); + writel(bias0_en, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); + writel(drvr1_en, edp->tx1 + TXn_HIGHZ_DRVR_EN); + writel(bias1_en, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); + writel(cfg1, edp->edp + DP_PHY_CFG_1); + + writel(0x18, edp->edp + DP_PHY_CFG); + usleep_range(100, 1000); + + writel(0x19, edp->edp + DP_PHY_CFG); + + ret = readl_poll_timeout(edp->edp + DP_PHY_STATUS, + val, val & BIT(1), 500, 10000); + if (ret) + return ret; + + clk_set_rate(edp->dp_link_hw.clk, edp->dp_opts.link_rate * 100000); + clk_set_rate(edp->dp_pixel_hw.clk, pixel_freq); + + return 0; +} + +static int qcom_edp_phy_power_off(struct phy *phy) +{ + const struct qcom_edp *edp = phy_get_drvdata(phy); + + writel(DP_PHY_PD_CTL_PSR_PWRDN, edp->edp + DP_PHY_PD_CTL); + + return 0; +} + +static int qcom_edp_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct qcom_edp *edp = phy_get_drvdata(phy); + + if (mode != PHY_MODE_DP) + return -EINVAL; + + edp->is_edp = submode == PHY_SUBMODE_EDP; + + return 0; +} + +static int qcom_edp_phy_exit(struct phy *phy) +{ + struct qcom_edp *edp = phy_get_drvdata(phy); + + clk_bulk_disable_unprepare(edp->num_clks, edp->clks); + regulator_bulk_disable(ARRAY_SIZE(edp->supplies), edp->supplies); + + return 0; +} + +static const struct phy_ops qcom_edp_ops = { + .init = qcom_edp_phy_init, + .configure = qcom_edp_phy_configure, + .power_on = qcom_edp_phy_power_on, + .power_off = qcom_edp_phy_power_off, + .set_mode = qcom_edp_phy_set_mode, + .exit = qcom_edp_phy_exit, + .owner = THIS_MODULE, +}; + +/* + * Embedded Display Port PLL driver block diagram for branch clocks + * + * +------------------------------+ + * | EDP_VCO_CLK | + * | | + * | +-------------------+ | + * | | (EDP PLL/VCO) | | + * | +---------+---------+ | + * | v | + * | +----------+-----------+ | + * | | hsclk_divsel_clk_src | | + * | +----------+-----------+ | + * +------------------------------+ + * | + * +---------<---------v------------>----------+ + * | | + * +--------v----------------+ | + * | edp_phy_pll_link_clk | | + * | link_clk | | + * +--------+----------------+ | + * | | + * | | + * v v + * Input to DISPCC block | + * for link clk, crypto clk | + * and interface clock | + * | + * | + * +--------<------------+-----------------+---<---+ + * | | | + * +----v---------+ +--------v-----+ +--------v------+ + * | vco_divided | | vco_divided | | vco_divided | + * | _clk_src | | _clk_src | | _clk_src | + * | | | | | | + * |divsel_six | | divsel_two | | divsel_four | + * +-------+------+ +-----+--------+ +--------+------+ + * | | | + * v---->----------v-------------<------v + * | + * +----------+-----------------+ + * | edp_phy_pll_vco_div_clk | + * +---------+------------------+ + * | + * v + * Input to DISPCC block + * for EDP pixel clock + * + */ +static int qcom_edp_dp_pixel_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + switch (req->rate) { + case 1620000000UL / 2: + case 2700000000UL / 2: + /* 5.4 and 8.1 GHz are same link rate as 2.7GHz, i.e. div 4 and div 6 */ + return 0; + + default: + return -EINVAL; + } +} + +static unsigned long +qcom_edp_dp_pixel_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) +{ + const struct qcom_edp *edp = container_of(hw, struct qcom_edp, dp_pixel_hw); + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + + switch (dp_opts->link_rate) { + case 1620: + return 1620000000UL / 2; + case 2700: + return 2700000000UL / 2; + case 5400: + return 5400000000UL / 4; + case 8100: + return 8100000000UL / 6; + default: + return 0; + } +} + +static const struct clk_ops qcom_edp_dp_pixel_clk_ops = { + .determine_rate = qcom_edp_dp_pixel_clk_determine_rate, + .recalc_rate = qcom_edp_dp_pixel_clk_recalc_rate, +}; + +static int qcom_edp_dp_link_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + switch (req->rate) { + case 162000000: + case 270000000: + case 540000000: + case 810000000: + return 0; + + default: + return -EINVAL; + } +} + +static unsigned long +qcom_edp_dp_link_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) +{ + const struct qcom_edp *edp = container_of(hw, struct qcom_edp, dp_link_hw); + const struct phy_configure_opts_dp *dp_opts = &edp->dp_opts; + + switch (dp_opts->link_rate) { + case 1620: + case 2700: + case 5400: + case 8100: + return dp_opts->link_rate * 100000; + + default: + return 0; + } +} + +static const struct clk_ops qcom_edp_dp_link_clk_ops = { + .determine_rate = qcom_edp_dp_link_clk_determine_rate, + .recalc_rate = qcom_edp_dp_link_clk_recalc_rate, +}; + +static int qcom_edp_clks_register(struct qcom_edp *edp, struct device_node *np) +{ + struct clk_hw_onecell_data *data; + struct clk_init_data init = { }; + char name[64]; + int ret; + + data = devm_kzalloc(edp->dev, struct_size(data, hws, 2), GFP_KERNEL); + if (!data) + return -ENOMEM; + data->num = 2; + + snprintf(name, sizeof(name), "%s::link_clk", dev_name(edp->dev)); + init.ops = &qcom_edp_dp_link_clk_ops; + init.name = name; + edp->dp_link_hw.init = &init; + ret = devm_clk_hw_register(edp->dev, &edp->dp_link_hw); + if (ret) + return ret; + + snprintf(name, sizeof(name), "%s::vco_div_clk", dev_name(edp->dev)); + init.ops = &qcom_edp_dp_pixel_clk_ops; + init.name = name; + edp->dp_pixel_hw.init = &init; + ret = devm_clk_hw_register(edp->dev, &edp->dp_pixel_hw); + if (ret) + return ret; + + data->hws[0] = &edp->dp_link_hw; + data->hws[1] = &edp->dp_pixel_hw; + + return devm_of_clk_add_hw_provider(edp->dev, of_clk_hw_onecell_get, data); +} + +static int qcom_edp_phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct qcom_edp *edp; + int ret; + + edp = devm_kzalloc(dev, sizeof(*edp), GFP_KERNEL); + if (!edp) + return -ENOMEM; + + edp->dev = dev; + edp->cfg = of_device_get_match_data(&pdev->dev); + edp->is_edp = edp->cfg->is_edp; + + edp->edp = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(edp->edp)) + return PTR_ERR(edp->edp); + + edp->tx0 = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(edp->tx0)) + return PTR_ERR(edp->tx0); + + edp->tx1 = devm_platform_ioremap_resource(pdev, 2); + if (IS_ERR(edp->tx1)) + return PTR_ERR(edp->tx1); + + edp->pll = devm_platform_ioremap_resource(pdev, 3); + if (IS_ERR(edp->pll)) + return PTR_ERR(edp->pll); + + edp->num_clks = devm_clk_bulk_get_all(dev, &edp->clks); + if (edp->num_clks < 0) + return dev_err_probe(dev, edp->num_clks, "failed to get clocks\n"); + + edp->supplies[0].supply = "vdda-phy"; + edp->supplies[1].supply = "vdda-pll"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(edp->supplies), edp->supplies); + if (ret) + return ret; + + ret = regulator_set_load(edp->supplies[0].consumer, 21800); /* 1.2 V vdda-phy */ + if (ret) { + dev_err(dev, "failed to set load at %s\n", edp->supplies[0].supply); + return ret; + } + + ret = regulator_set_load(edp->supplies[1].consumer, 36000); /* 0.9 V vdda-pll */ + if (ret) { + dev_err(dev, "failed to set load at %s\n", edp->supplies[1].supply); + return ret; + } + + ret = qcom_edp_clks_register(edp, pdev->dev.of_node); + if (ret) + return ret; + + edp->phy = devm_phy_create(dev, pdev->dev.of_node, &qcom_edp_ops); + if (IS_ERR(edp->phy)) { + dev_err(dev, "failed to register phy\n"); + return PTR_ERR(edp->phy); + } + + phy_set_drvdata(edp->phy, edp); + + 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 qcom_edp_phy_match_table[] = { + { .compatible = "qcom,glymur-dp-phy", .data = &glymur_phy_cfg, }, + { .compatible = "qcom,sa8775p-edp-phy", .data = &sa8775p_dp_phy_cfg, }, + { .compatible = "qcom,sc7280-edp-phy", .data = &sc7280_dp_phy_cfg, }, + { .compatible = "qcom,sc8180x-edp-phy", .data = &sc8180x_dp_phy_cfg, }, + { .compatible = "qcom,sc8280xp-dp-phy", .data = &sc8280xp_dp_phy_cfg, }, + { .compatible = "qcom,sc8280xp-edp-phy", .data = &sc8280xp_edp_phy_cfg, }, + { .compatible = "qcom,x1e80100-dp-phy", .data = &x1e80100_phy_cfg, }, + { } +}; +MODULE_DEVICE_TABLE(of, qcom_edp_phy_match_table); + +static struct platform_driver qcom_edp_phy_driver = { + .probe = qcom_edp_phy_probe, + .driver = { + .name = "qcom-edp-phy", + .of_match_table = qcom_edp_phy_match_table, + }, +}; + +module_platform_driver(qcom_edp_phy_driver); + +MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@linaro.org>"); +MODULE_DESCRIPTION("Qualcomm eDP QMP PHY driver"); +MODULE_LICENSE("GPL v2"); |
