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path: root/drivers/gpu/drm/i915/intel_combo_phy.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_combo_phy.c')
-rw-r--r--drivers/gpu/drm/i915/intel_combo_phy.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/drivers/gpu/drm/i915/intel_combo_phy.c b/drivers/gpu/drm/i915/intel_combo_phy.c
deleted file mode 100644
index 3d0271cebf99..000000000000
--- a/drivers/gpu/drm/i915/intel_combo_phy.c
+++ /dev/null
@@ -1,254 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2018 Intel Corporation
- */
-
-#include "intel_drv.h"
-
-#define for_each_combo_port(__dev_priv, __port) \
- for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++) \
- for_each_if(intel_port_is_combophy(__dev_priv, __port))
-
-#define for_each_combo_port_reverse(__dev_priv, __port) \
- for ((__port) = I915_MAX_PORTS; (__port)-- > PORT_A;) \
- for_each_if(intel_port_is_combophy(__dev_priv, __port))
-
-enum {
- PROCMON_0_85V_DOT_0,
- PROCMON_0_95V_DOT_0,
- PROCMON_0_95V_DOT_1,
- PROCMON_1_05V_DOT_0,
- PROCMON_1_05V_DOT_1,
-};
-
-static const struct cnl_procmon {
- u32 dw1, dw9, dw10;
-} cnl_procmon_values[] = {
- [PROCMON_0_85V_DOT_0] =
- { .dw1 = 0x00000000, .dw9 = 0x62AB67BB, .dw10 = 0x51914F96, },
- [PROCMON_0_95V_DOT_0] =
- { .dw1 = 0x00000000, .dw9 = 0x86E172C7, .dw10 = 0x77CA5EAB, },
- [PROCMON_0_95V_DOT_1] =
- { .dw1 = 0x00000000, .dw9 = 0x93F87FE1, .dw10 = 0x8AE871C5, },
- [PROCMON_1_05V_DOT_0] =
- { .dw1 = 0x00000000, .dw9 = 0x98FA82DD, .dw10 = 0x89E46DC1, },
- [PROCMON_1_05V_DOT_1] =
- { .dw1 = 0x00440000, .dw9 = 0x9A00AB25, .dw10 = 0x8AE38FF1, },
-};
-
-/*
- * CNL has just one set of registers, while ICL has two sets: one for port A and
- * the other for port B. The CNL registers are equivalent to the ICL port A
- * registers, that's why we call the ICL macros even though the function has CNL
- * on its name.
- */
-static const struct cnl_procmon *
-cnl_get_procmon_ref_values(struct drm_i915_private *dev_priv, enum port port)
-{
- const struct cnl_procmon *procmon;
- u32 val;
-
- val = I915_READ(ICL_PORT_COMP_DW3(port));
- switch (val & (PROCESS_INFO_MASK | VOLTAGE_INFO_MASK)) {
- default:
- MISSING_CASE(val);
- /* fall through */
- case VOLTAGE_INFO_0_85V | PROCESS_INFO_DOT_0:
- procmon = &cnl_procmon_values[PROCMON_0_85V_DOT_0];
- break;
- case VOLTAGE_INFO_0_95V | PROCESS_INFO_DOT_0:
- procmon = &cnl_procmon_values[PROCMON_0_95V_DOT_0];
- break;
- case VOLTAGE_INFO_0_95V | PROCESS_INFO_DOT_1:
- procmon = &cnl_procmon_values[PROCMON_0_95V_DOT_1];
- break;
- case VOLTAGE_INFO_1_05V | PROCESS_INFO_DOT_0:
- procmon = &cnl_procmon_values[PROCMON_1_05V_DOT_0];
- break;
- case VOLTAGE_INFO_1_05V | PROCESS_INFO_DOT_1:
- procmon = &cnl_procmon_values[PROCMON_1_05V_DOT_1];
- break;
- }
-
- return procmon;
-}
-
-static void cnl_set_procmon_ref_values(struct drm_i915_private *dev_priv,
- enum port port)
-{
- const struct cnl_procmon *procmon;
- u32 val;
-
- procmon = cnl_get_procmon_ref_values(dev_priv, port);
-
- val = I915_READ(ICL_PORT_COMP_DW1(port));
- val &= ~((0xff << 16) | 0xff);
- val |= procmon->dw1;
- I915_WRITE(ICL_PORT_COMP_DW1(port), val);
-
- I915_WRITE(ICL_PORT_COMP_DW9(port), procmon->dw9);
- I915_WRITE(ICL_PORT_COMP_DW10(port), procmon->dw10);
-}
-
-static bool check_phy_reg(struct drm_i915_private *dev_priv,
- enum port port, i915_reg_t reg, u32 mask,
- u32 expected_val)
-{
- u32 val = I915_READ(reg);
-
- if ((val & mask) != expected_val) {
- DRM_DEBUG_DRIVER("Port %c combo PHY reg %08x state mismatch: "
- "current %08x mask %08x expected %08x\n",
- port_name(port),
- reg.reg, val, mask, expected_val);
- return false;
- }
-
- return true;
-}
-
-static bool cnl_verify_procmon_ref_values(struct drm_i915_private *dev_priv,
- enum port port)
-{
- const struct cnl_procmon *procmon;
- bool ret;
-
- procmon = cnl_get_procmon_ref_values(dev_priv, port);
-
- ret = check_phy_reg(dev_priv, port, ICL_PORT_COMP_DW1(port),
- (0xff << 16) | 0xff, procmon->dw1);
- ret &= check_phy_reg(dev_priv, port, ICL_PORT_COMP_DW9(port),
- -1U, procmon->dw9);
- ret &= check_phy_reg(dev_priv, port, ICL_PORT_COMP_DW10(port),
- -1U, procmon->dw10);
-
- return ret;
-}
-
-static bool cnl_combo_phy_enabled(struct drm_i915_private *dev_priv)
-{
- return !(I915_READ(CHICKEN_MISC_2) & CNL_COMP_PWR_DOWN) &&
- (I915_READ(CNL_PORT_COMP_DW0) & COMP_INIT);
-}
-
-static bool cnl_combo_phy_verify_state(struct drm_i915_private *dev_priv)
-{
- enum port port = PORT_A;
- bool ret;
-
- if (!cnl_combo_phy_enabled(dev_priv))
- return false;
-
- ret = cnl_verify_procmon_ref_values(dev_priv, port);
-
- ret &= check_phy_reg(dev_priv, port, CNL_PORT_CL1CM_DW5,
- CL_POWER_DOWN_ENABLE, CL_POWER_DOWN_ENABLE);
-
- return ret;
-}
-
-void cnl_combo_phys_init(struct drm_i915_private *dev_priv)
-{
- u32 val;
-
- val = I915_READ(CHICKEN_MISC_2);
- val &= ~CNL_COMP_PWR_DOWN;
- I915_WRITE(CHICKEN_MISC_2, val);
-
- /* Dummy PORT_A to get the correct CNL register from the ICL macro */
- cnl_set_procmon_ref_values(dev_priv, PORT_A);
-
- val = I915_READ(CNL_PORT_COMP_DW0);
- val |= COMP_INIT;
- I915_WRITE(CNL_PORT_COMP_DW0, val);
-
- val = I915_READ(CNL_PORT_CL1CM_DW5);
- val |= CL_POWER_DOWN_ENABLE;
- I915_WRITE(CNL_PORT_CL1CM_DW5, val);
-}
-
-void cnl_combo_phys_uninit(struct drm_i915_private *dev_priv)
-{
- u32 val;
-
- if (!cnl_combo_phy_verify_state(dev_priv))
- DRM_WARN("Combo PHY HW state changed unexpectedly.\n");
-
- val = I915_READ(CHICKEN_MISC_2);
- val |= CNL_COMP_PWR_DOWN;
- I915_WRITE(CHICKEN_MISC_2, val);
-}
-
-static bool icl_combo_phy_enabled(struct drm_i915_private *dev_priv,
- enum port port)
-{
- return !(I915_READ(ICL_PHY_MISC(port)) &
- ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN) &&
- (I915_READ(ICL_PORT_COMP_DW0(port)) & COMP_INIT);
-}
-
-static bool icl_combo_phy_verify_state(struct drm_i915_private *dev_priv,
- enum port port)
-{
- bool ret;
-
- if (!icl_combo_phy_enabled(dev_priv, port))
- return false;
-
- ret = cnl_verify_procmon_ref_values(dev_priv, port);
-
- ret &= check_phy_reg(dev_priv, port, ICL_PORT_CL_DW5(port),
- CL_POWER_DOWN_ENABLE, CL_POWER_DOWN_ENABLE);
-
- return ret;
-}
-
-void icl_combo_phys_init(struct drm_i915_private *dev_priv)
-{
- enum port port;
-
- for_each_combo_port(dev_priv, port) {
- u32 val;
-
- if (icl_combo_phy_verify_state(dev_priv, port)) {
- DRM_DEBUG_DRIVER("Port %c combo PHY already enabled, won't reprogram it.\n",
- port_name(port));
- continue;
- }
-
- val = I915_READ(ICL_PHY_MISC(port));
- val &= ~ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
- I915_WRITE(ICL_PHY_MISC(port), val);
-
- cnl_set_procmon_ref_values(dev_priv, port);
-
- val = I915_READ(ICL_PORT_COMP_DW0(port));
- val |= COMP_INIT;
- I915_WRITE(ICL_PORT_COMP_DW0(port), val);
-
- val = I915_READ(ICL_PORT_CL_DW5(port));
- val |= CL_POWER_DOWN_ENABLE;
- I915_WRITE(ICL_PORT_CL_DW5(port), val);
- }
-}
-
-void icl_combo_phys_uninit(struct drm_i915_private *dev_priv)
-{
- enum port port;
-
- for_each_combo_port_reverse(dev_priv, port) {
- u32 val;
-
- if (!icl_combo_phy_verify_state(dev_priv, port))
- DRM_WARN("Port %c combo PHY HW state changed unexpectedly\n",
- port_name(port));
-
- val = I915_READ(ICL_PHY_MISC(port));
- val |= ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
- I915_WRITE(ICL_PHY_MISC(port), val);
-
- val = I915_READ(ICL_PORT_COMP_DW0(port));
- val &= ~COMP_INIT;
- I915_WRITE(ICL_PORT_COMP_DW0(port), val);
- }
-}
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