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phy: qcom-qmp-combo: Introduce orientation variable 

In multiple places throughout the driver code has been written in
prepration for handling of orientation switching.

Introduce a typec_orientation in qmp_combo and fill out the various
"placeholders" with the associated logic. By initializing the
orientation to "normal" this change has no functional impact, but
reduces the size of the upcoming introduction of dynamic orientation
switching.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Abel Vesa <abel.vesa@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on HDK8450
Tested-by: Johan Hovold <johan+linaro@kernel.org>	# X13s
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20230515032743.400170-5-quic_bjorande@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bjorn Andersson 2023-05-14 20:27:39 -07:00 committed by Vinod Koul
parent 77cbca3a12
commit 815891eee6
1 changed files with 30 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
drivers/phy/qualcomm/phy-qcom-qmp-combo.c
View File

@ -19,6 +19,7 @@
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/usb/typec.h>
#include <dt-bindings/phy/phy-qcom-qmp.h>
@ -63,6 +64,10 @@
/* QPHY_V3_PCS_MISC_CLAMP_ENABLE register bits */
#define CLAMP_EN BIT(0) /* enables i/o clamp_n */
/* QPHY_V3_DP_COM_TYPEC_CTRL register bits */
#define SW_PORTSELECT_VAL BIT(0)
#define SW_PORTSELECT_MUX BIT(1)
#define PHY_INIT_COMPLETE_TIMEOUT 10000
struct qmp_phy_init_tbl {
@ -1323,6 +1328,8 @@ struct qmp_combo {
struct clk_fixed_rate pipe_clk_fixed;
struct clk_hw dp_link_hw;
struct clk_hw dp_pixel_hw;
enum typec_orientation orientation;
};
static void qmp_v3_dp_aux_init(struct qmp_combo *qmp);
@ -1954,30 +1961,24 @@ static void qmp_v3_configure_dp_tx(struct qmp_combo *qmp)
static bool qmp_combo_configure_dp_mode(struct qmp_combo *qmp)
{
bool reverse = (qmp->orientation == TYPEC_ORIENTATION_REVERSE);
const struct phy_configure_opts_dp *dp_opts = &qmp->dp_opts;
u32 val;
bool reverse = false;
val = DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN |
DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN;
/*
* TODO: Assume orientation is CC1 for now and two lanes, need to
* use type-c connector to understand orientation and lanes.
*
* Otherwise val changes to be like below if this code understood
* the orientation of the type-c cable.
*
* if (lane_cnt == 4 || orientation == ORIENTATION_CC2)
* val |= DP_PHY_PD_CTL_LANE_0_1_PWRDN;
* if (lane_cnt == 4 || orientation == ORIENTATION_CC1)
* val |= DP_PHY_PD_CTL_LANE_2_3_PWRDN;
* if (orientation == ORIENTATION_CC2)
* writel(0x4c, qmp->dp_dp_phy + QSERDES_V3_DP_PHY_MODE);
*/
val |= DP_PHY_PD_CTL_LANE_2_3_PWRDN;
if (dp_opts->lanes == 4 || reverse)
val |= DP_PHY_PD_CTL_LANE_0_1_PWRDN;
if (dp_opts->lanes == 4 || !reverse)
val |= DP_PHY_PD_CTL_LANE_2_3_PWRDN;
writel(val, qmp->dp_dp_phy + QSERDES_DP_PHY_PD_CTL);
writel(0x5c, qmp->dp_dp_phy + QSERDES_DP_PHY_MODE);
if (reverse)
writel(0x4c, qmp->pcs + QSERDES_DP_PHY_MODE);
else
writel(0x5c, qmp->pcs + QSERDES_DP_PHY_MODE);
return reverse;
}
@ -2233,9 +2234,9 @@ static int qmp_v456_configure_dp_phy(struct qmp_combo *qmp,
static int qmp_v4_configure_dp_phy(struct qmp_combo *qmp)
{
bool reverse = (qmp->orientation == TYPEC_ORIENTATION_REVERSE);
const struct phy_configure_opts_dp *dp_opts = &qmp->dp_opts;
u32 bias0_en, drvr0_en, bias1_en, drvr1_en;
bool reverse = false;
u32 status;
int ret;
@ -2297,9 +2298,9 @@ static int qmp_v4_configure_dp_phy(struct qmp_combo *qmp)
static int qmp_v5_configure_dp_phy(struct qmp_combo *qmp)
{
bool reverse = (qmp->orientation == TYPEC_ORIENTATION_REVERSE);
const struct phy_configure_opts_dp *dp_opts = &qmp->dp_opts;
u32 bias0_en, drvr0_en, bias1_en, drvr1_en;
bool reverse = false;
u32 status;
int ret;
@ -2356,9 +2357,9 @@ static int qmp_v5_configure_dp_phy(struct qmp_combo *qmp)
static int qmp_v6_configure_dp_phy(struct qmp_combo *qmp)
{
bool reverse = (qmp->orientation == TYPEC_ORIENTATION_REVERSE);
const struct phy_configure_opts_dp *dp_opts = &qmp->dp_opts;
u32 bias0_en, drvr0_en, bias1_en, drvr1_en;
bool reverse = false;
u32 status;
int ret;
@ -2471,6 +2472,7 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
const struct qmp_phy_cfg *cfg = qmp->cfg;
void __iomem *com = qmp->com;
int ret;
u32 val;
if (qmp->init_count++)
return 0;
@ -2504,10 +2506,12 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
SW_DPPHY_RESET_MUX | SW_DPPHY_RESET |
SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET);
/* Default type-c orientation, i.e CC1 */
qphy_setbits(com, QPHY_V3_DP_COM_TYPEC_CTRL, 0x02);
qphy_setbits(com, QPHY_V3_DP_COM_PHY_MODE_CTRL, USB3_MODE | DP_MODE);
/* Use software based port select and switch on typec orientation */
val = SW_PORTSELECT_MUX;
if (qmp->orientation == TYPEC_ORIENTATION_REVERSE)
val |= SW_PORTSELECT_VAL;
writel(val, com + QPHY_V3_DP_COM_TYPEC_CTRL);
writel(USB3_MODE | DP_MODE, com + QPHY_V3_DP_COM_PHY_MODE_CTRL);
/* bring both QMP USB and QMP DP PHYs PCS block out of reset */
qphy_clrbits(com, QPHY_V3_DP_COM_RESET_OVRD_CTRL,
@ -3379,6 +3383,8 @@ static int qmp_combo_probe(struct platform_device *pdev)
qmp->dev = dev;
qmp->orientation = TYPEC_ORIENTATION_NORMAL;
qmp->cfg = of_device_get_match_data(dev);
if (!qmp->cfg)
return -EINVAL;