ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/msm
-ccflags-$(CONFIG_DRM_MSM_DSI_PLL) += -Idrivers/gpu/drm/msm/dsi
+ccflags-$(CONFIG_DRM_MSM_DSI) += -Idrivers/gpu/drm/msm/dsi
msm-y := \
adreno/adreno_device.o \
msm-$(CONFIG_DRM_MSM_DSI) += dsi/dsi.o \
dsi/dsi_host.o \
dsi/dsi_manager.o \
- dsi/dsi_phy.o \
+ dsi/phy/dsi_phy.o \
+ dsi/phy/dsi_phy_20nm.o \
+ dsi/phy/dsi_phy_28nm.o \
mdp/mdp5/mdp5_cmd_encoder.o
msm-$(CONFIG_DRM_MSM_DSI_PLL) += dsi/pll/dsi_pll.o \
+++ /dev/null
-/*
- * Copyright (c) 2015, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-
-#include "dsi.h"
-#include "dsi.xml.h"
-
-#define dsi_phy_read(offset) msm_readl((offset))
-#define dsi_phy_write(offset, data) msm_writel((data), (offset))
-
-struct dsi_phy_ops {
- int (*enable)(struct msm_dsi_phy *phy, int src_pll_id,
- const unsigned long bit_rate, const unsigned long esc_rate);
- void (*disable)(struct msm_dsi_phy *phy);
-};
-
-struct dsi_phy_cfg {
- enum msm_dsi_phy_type type;
- struct dsi_reg_config reg_cfg;
- struct dsi_phy_ops ops;
-
- /* Each cell {phy_id, pll_id} of the truth table indicates
- * if the source PLL is on the right side of the PHY.
- * Fill default H/W values in illegal cells, eg. cell {0, 1}.
- */
- bool src_pll_truthtable[DSI_MAX][DSI_MAX];
-};
-
-struct dsi_dphy_timing {
- u32 clk_pre;
- u32 clk_post;
- u32 clk_zero;
- u32 clk_trail;
- u32 clk_prepare;
- u32 hs_exit;
- u32 hs_zero;
- u32 hs_prepare;
- u32 hs_trail;
- u32 hs_rqst;
- u32 ta_go;
- u32 ta_sure;
- u32 ta_get;
-};
-
-struct msm_dsi_phy {
- struct platform_device *pdev;
- void __iomem *base;
- void __iomem *reg_base;
- int id;
-
- struct clk *ahb_clk;
- struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
-
- struct dsi_dphy_timing timing;
- const struct dsi_phy_cfg *cfg;
-
- bool regulator_ldo_mode;
-
- struct msm_dsi_pll *pll;
-};
-
-static int dsi_phy_regulator_init(struct msm_dsi_phy *phy)
-{
- struct regulator_bulk_data *s = phy->supplies;
- const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
- struct device *dev = &phy->pdev->dev;
- int num = phy->cfg->reg_cfg.num;
- int i, ret;
-
- for (i = 0; i < num; i++)
- s[i].supply = regs[i].name;
-
- ret = devm_regulator_bulk_get(&phy->pdev->dev, num, s);
- if (ret < 0) {
- dev_err(dev, "%s: failed to init regulator, ret=%d\n",
- __func__, ret);
- return ret;
- }
-
- for (i = 0; i < num; i++) {
- if ((regs[i].min_voltage >= 0) && (regs[i].max_voltage >= 0)) {
- ret = regulator_set_voltage(s[i].consumer,
- regs[i].min_voltage, regs[i].max_voltage);
- if (ret < 0) {
- dev_err(dev,
- "regulator %d set voltage failed, %d\n",
- i, ret);
- return ret;
- }
- }
- }
-
- return 0;
-}
-
-static void dsi_phy_regulator_disable(struct msm_dsi_phy *phy)
-{
- struct regulator_bulk_data *s = phy->supplies;
- const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
- int num = phy->cfg->reg_cfg.num;
- int i;
-
- DBG("");
- for (i = num - 1; i >= 0; i--)
- if (regs[i].disable_load >= 0)
- regulator_set_load(s[i].consumer,
- regs[i].disable_load);
-
- regulator_bulk_disable(num, s);
-}
-
-static int dsi_phy_regulator_enable(struct msm_dsi_phy *phy)
-{
- struct regulator_bulk_data *s = phy->supplies;
- const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
- struct device *dev = &phy->pdev->dev;
- int num = phy->cfg->reg_cfg.num;
- int ret, i;
-
- DBG("");
- for (i = 0; i < num; i++) {
- if (regs[i].enable_load >= 0) {
- ret = regulator_set_load(s[i].consumer,
- regs[i].enable_load);
- if (ret < 0) {
- dev_err(dev,
- "regulator %d set op mode failed, %d\n",
- i, ret);
- goto fail;
- }
- }
- }
-
- ret = regulator_bulk_enable(num, s);
- if (ret < 0) {
- dev_err(dev, "regulator enable failed, %d\n", ret);
- goto fail;
- }
-
- return 0;
-
-fail:
- for (i--; i >= 0; i--)
- regulator_set_load(s[i].consumer, regs[i].disable_load);
- return ret;
-}
-
-static void dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
- u32 bit_mask)
-{
- int phy_id = phy->id;
- u32 val;
-
- if ((phy_id >= DSI_MAX) || (pll_id >= DSI_MAX))
- return;
-
- val = dsi_phy_read(phy->base + reg);
-
- if (phy->cfg->src_pll_truthtable[phy_id][pll_id])
- dsi_phy_write(phy->base + reg, val | bit_mask);
- else
- dsi_phy_write(phy->base + reg, val & (~bit_mask));
-}
-
-#define S_DIV_ROUND_UP(n, d) \
- (((n) >= 0) ? (((n) + (d) - 1) / (d)) : (((n) - (d) + 1) / (d)))
-
-static inline s32 linear_inter(s32 tmax, s32 tmin, s32 percent,
- s32 min_result, bool even)
-{
- s32 v;
- v = (tmax - tmin) * percent;
- v = S_DIV_ROUND_UP(v, 100) + tmin;
- if (even && (v & 0x1))
- return max_t(s32, min_result, v - 1);
- else
- return max_t(s32, min_result, v);
-}
-
-static void dsi_dphy_timing_calc_clk_zero(struct dsi_dphy_timing *timing,
- s32 ui, s32 coeff, s32 pcnt)
-{
- s32 tmax, tmin, clk_z;
- s32 temp;
-
- /* reset */
- temp = 300 * coeff - ((timing->clk_prepare >> 1) + 1) * 2 * ui;
- tmin = S_DIV_ROUND_UP(temp, ui) - 2;
- if (tmin > 255) {
- tmax = 511;
- clk_z = linear_inter(2 * tmin, tmin, pcnt, 0, true);
- } else {
- tmax = 255;
- clk_z = linear_inter(tmax, tmin, pcnt, 0, true);
- }
-
- /* adjust */
- temp = (timing->hs_rqst + timing->clk_prepare + clk_z) & 0x7;
- timing->clk_zero = clk_z + 8 - temp;
-}
-
-static int dsi_dphy_timing_calc(struct dsi_dphy_timing *timing,
- const unsigned long bit_rate, const unsigned long esc_rate)
-{
- s32 ui, lpx;
- s32 tmax, tmin;
- s32 pcnt0 = 10;
- s32 pcnt1 = (bit_rate > 1200000000) ? 15 : 10;
- s32 pcnt2 = 10;
- s32 pcnt3 = (bit_rate > 180000000) ? 10 : 40;
- s32 coeff = 1000; /* Precision, should avoid overflow */
- s32 temp;
-
- if (!bit_rate || !esc_rate)
- return -EINVAL;
-
- ui = mult_frac(NSEC_PER_MSEC, coeff, bit_rate / 1000);
- lpx = mult_frac(NSEC_PER_MSEC, coeff, esc_rate / 1000);
-
- tmax = S_DIV_ROUND_UP(95 * coeff, ui) - 2;
- tmin = S_DIV_ROUND_UP(38 * coeff, ui) - 2;
- timing->clk_prepare = linear_inter(tmax, tmin, pcnt0, 0, true);
-
- temp = lpx / ui;
- if (temp & 0x1)
- timing->hs_rqst = temp;
- else
- timing->hs_rqst = max_t(s32, 0, temp - 2);
-
- /* Calculate clk_zero after clk_prepare and hs_rqst */
- dsi_dphy_timing_calc_clk_zero(timing, ui, coeff, pcnt2);
-
- temp = 105 * coeff + 12 * ui - 20 * coeff;
- tmax = S_DIV_ROUND_UP(temp, ui) - 2;
- tmin = S_DIV_ROUND_UP(60 * coeff, ui) - 2;
- timing->clk_trail = linear_inter(tmax, tmin, pcnt3, 0, true);
-
- temp = 85 * coeff + 6 * ui;
- tmax = S_DIV_ROUND_UP(temp, ui) - 2;
- temp = 40 * coeff + 4 * ui;
- tmin = S_DIV_ROUND_UP(temp, ui) - 2;
- timing->hs_prepare = linear_inter(tmax, tmin, pcnt1, 0, true);
-
- tmax = 255;
- temp = ((timing->hs_prepare >> 1) + 1) * 2 * ui + 2 * ui;
- temp = 145 * coeff + 10 * ui - temp;
- tmin = S_DIV_ROUND_UP(temp, ui) - 2;
- timing->hs_zero = linear_inter(tmax, tmin, pcnt2, 24, true);
-
- temp = 105 * coeff + 12 * ui - 20 * coeff;
- tmax = S_DIV_ROUND_UP(temp, ui) - 2;
- temp = 60 * coeff + 4 * ui;
- tmin = DIV_ROUND_UP(temp, ui) - 2;
- timing->hs_trail = linear_inter(tmax, tmin, pcnt3, 0, true);
-
- tmax = 255;
- tmin = S_DIV_ROUND_UP(100 * coeff, ui) - 2;
- timing->hs_exit = linear_inter(tmax, tmin, pcnt2, 0, true);
-
- tmax = 63;
- temp = ((timing->hs_exit >> 1) + 1) * 2 * ui;
- temp = 60 * coeff + 52 * ui - 24 * ui - temp;
- tmin = S_DIV_ROUND_UP(temp, 8 * ui) - 1;
- timing->clk_post = linear_inter(tmax, tmin, pcnt2, 0, false);
-
- tmax = 63;
- temp = ((timing->clk_prepare >> 1) + 1) * 2 * ui;
- temp += ((timing->clk_zero >> 1) + 1) * 2 * ui;
- temp += 8 * ui + lpx;
- tmin = S_DIV_ROUND_UP(temp, 8 * ui) - 1;
- if (tmin > tmax) {
- temp = linear_inter(2 * tmax, tmin, pcnt2, 0, false) >> 1;
- timing->clk_pre = temp >> 1;
- temp = (2 * tmax - tmin) * pcnt2;
- } else {
- timing->clk_pre = linear_inter(tmax, tmin, pcnt2, 0, false);
- }
-
- timing->ta_go = 3;
- timing->ta_sure = 0;
- timing->ta_get = 4;
-
- DBG("PHY timings: %d, %d, %d, %d, %d, %d, %d, %d, %d, %d",
- timing->clk_pre, timing->clk_post, timing->clk_zero,
- timing->clk_trail, timing->clk_prepare, timing->hs_exit,
- timing->hs_zero, timing->hs_prepare, timing->hs_trail,
- timing->hs_rqst);
-
- return 0;
-}
-
-static void dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
-{
- void __iomem *base = phy->reg_base;
-
- if (!enable) {
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
- return;
- }
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 1);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_5, 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_3, 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_2, 0x3);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_1, 0x9);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x7);
- dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_4, 0x20);
-}
-
-static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
- const unsigned long bit_rate, const unsigned long esc_rate)
-{
- struct dsi_dphy_timing *timing = &phy->timing;
- int i;
- void __iomem *base = phy->base;
-
- DBG("");
-
- if (dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
- pr_err("%s: D-PHY timing calculation failed\n", __func__);
- return -EINVAL;
- }
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_0, 0xff);
-
- dsi_28nm_phy_regulator_ctrl(phy, true);
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_LDO_CNTRL, 0x00);
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_0,
- DSI_28nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_1,
- DSI_28nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_2,
- DSI_28nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
- if (timing->clk_zero & BIT(8))
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_3,
- DSI_28nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_4,
- DSI_28nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_5,
- DSI_28nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_6,
- DSI_28nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_7,
- DSI_28nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_8,
- DSI_28nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_9,
- DSI_28nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
- DSI_28nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_10,
- DSI_28nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
- dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_11,
- DSI_28nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_1, 0x00);
- dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_1, 0x6);
-
- for (i = 0; i < 4; i++) {
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_0(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_1(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_2(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_3(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_DATAPATH(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_DEBUG_SEL(i), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_0(i), 0x1);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_1(i), 0x97);
- }
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(0), 0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(1), 0x5);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(2), 0xa);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(3), 0xf);
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_CFG_1, 0xc0);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR0, 0x1);
- dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR1, 0xbb);
-
- dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
-
- dsi_phy_set_src_pll(phy, src_pll_id, REG_DSI_28nm_PHY_GLBL_TEST_CTRL,
- DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
-
- return 0;
-}
-
-static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
-{
- dsi_phy_write(phy->base + REG_DSI_28nm_PHY_CTRL_0, 0);
- dsi_28nm_phy_regulator_ctrl(phy, false);
-
- /*
- * Wait for the registers writes to complete in order to
- * ensure that the phy is completely disabled
- */
- wmb();
-}
-
-static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
-{
- void __iomem *base = phy->reg_base;
-
- if (!enable) {
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
- return;
- }
-
- if (phy->regulator_ldo_mode) {
- dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x1d);
- return;
- }
-
- /* non LDO mode */
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_1, 0x03);
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_2, 0x03);
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_3, 0x00);
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_4, 0x20);
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0x01);
- dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x00);
- dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03);
-}
-
-static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
- const unsigned long bit_rate, const unsigned long esc_rate)
-{
- struct dsi_dphy_timing *timing = &phy->timing;
- int i;
- void __iomem *base = phy->base;
- u32 cfg_4[4] = {0x20, 0x40, 0x20, 0x00};
-
- DBG("");
-
- if (dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
- pr_err("%s: D-PHY timing calculation failed\n", __func__);
- return -EINVAL;
- }
-
- dsi_20nm_phy_regulator_ctrl(phy, true);
-
- dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff);
-
- dsi_phy_set_src_pll(phy, src_pll_id, REG_DSI_20nm_PHY_GLBL_TEST_CTRL,
- DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
-
- for (i = 0; i < 4; i++) {
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_3(i),
- (i >> 1) * 0x40);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_0(i), 0x01);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_1(i), 0x46);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_0(i), 0x02);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_1(i), 0xa0);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_4(i), cfg_4[i]);
- }
-
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_3, 0x80);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR0, 0x01);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR1, 0x46);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_0, 0x00);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_1, 0xa0);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_2, 0x00);
- dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_4, 0x00);
-
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_0,
- DSI_20nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_1,
- DSI_20nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_2,
- DSI_20nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
- if (timing->clk_zero & BIT(8))
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_3,
- DSI_20nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_4,
- DSI_20nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_5,
- DSI_20nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_6,
- DSI_20nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_7,
- DSI_20nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_8,
- DSI_20nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_9,
- DSI_20nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
- DSI_20nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_10,
- DSI_20nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
- dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_11,
- DSI_20nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
-
- dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_1, 0x00);
-
- dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_1, 0x06);
-
- /* make sure everything is written before enable */
- wmb();
- dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_0, 0x7f);
-
- return 0;
-}
-
-static void dsi_20nm_phy_disable(struct msm_dsi_phy *phy)
-{
- dsi_phy_write(phy->base + REG_DSI_20nm_PHY_CTRL_0, 0);
- dsi_20nm_phy_regulator_ctrl(phy, false);
-}
-
-static int dsi_phy_enable_resource(struct msm_dsi_phy *phy)
-{
- int ret;
-
- pm_runtime_get_sync(&phy->pdev->dev);
-
- ret = clk_prepare_enable(phy->ahb_clk);
- if (ret) {
- pr_err("%s: can't enable ahb clk, %d\n", __func__, ret);
- pm_runtime_put_sync(&phy->pdev->dev);
- }
-
- return ret;
-}
-
-static void dsi_phy_disable_resource(struct msm_dsi_phy *phy)
-{
- clk_disable_unprepare(phy->ahb_clk);
- pm_runtime_put_sync(&phy->pdev->dev);
-}
-
-static const struct dsi_phy_cfg dsi_phy_cfgs[MSM_DSI_PHY_MAX] = {
- [MSM_DSI_PHY_28NM_HPM] = {
- .type = MSM_DSI_PHY_28NM_HPM,
- .src_pll_truthtable = { {true, true}, {false, true} },
- .reg_cfg = {
- .num = 1,
- .regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
- },
- },
- .ops = {
- .enable = dsi_28nm_phy_enable,
- .disable = dsi_28nm_phy_disable,
- }
- },
- [MSM_DSI_PHY_28NM_LP] = {
- .type = MSM_DSI_PHY_28NM_LP,
- .src_pll_truthtable = { {true, true}, {true, true} },
- .reg_cfg = {
- .num = 1,
- .regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
- },
- },
- .ops = {
- .enable = dsi_28nm_phy_enable,
- .disable = dsi_28nm_phy_disable,
- }
- },
- [MSM_DSI_PHY_20NM] = {
- .type = MSM_DSI_PHY_20NM,
- .src_pll_truthtable = { {false, true}, {false, true} },
- .reg_cfg = {
- .num = 2,
- .regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
- {"vcca", 1000000, 1000000, 10000, 100},
- },
- },
- .ops = {
- .enable = dsi_20nm_phy_enable,
- .disable = dsi_20nm_phy_disable,
- }
- },
-};
-
-static const struct of_device_id dsi_phy_dt_match[] = {
- { .compatible = "qcom,dsi-phy-28nm-hpm",
- .data = &dsi_phy_cfgs[MSM_DSI_PHY_28NM_HPM],},
- { .compatible = "qcom,dsi-phy-28nm-lp",
- .data = &dsi_phy_cfgs[MSM_DSI_PHY_28NM_LP],},
- { .compatible = "qcom,dsi-phy-20nm",
- .data = &dsi_phy_cfgs[MSM_DSI_PHY_20NM],},
- {}
-};
-
-static int dsi_phy_driver_probe(struct platform_device *pdev)
-{
- struct msm_dsi_phy *phy;
- const struct of_device_id *match;
- int ret;
-
- phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
- if (!phy)
- return -ENOMEM;
-
- match = of_match_node(dsi_phy_dt_match, pdev->dev.of_node);
- if (!match)
- return -ENODEV;
-
- phy->cfg = match->data;
- phy->pdev = pdev;
-
- ret = of_property_read_u32(pdev->dev.of_node,
- "qcom,dsi-phy-index", &phy->id);
- if (ret) {
- dev_err(&pdev->dev,
- "%s: PHY index not specified, ret=%d\n",
- __func__, ret);
- goto fail;
- }
-
- phy->regulator_ldo_mode = of_property_read_bool(pdev->dev.of_node,
- "qcom,dsi-phy-regulator-ldo-mode");
-
- phy->base = msm_ioremap(pdev, "dsi_phy", "DSI_PHY");
- if (IS_ERR(phy->base)) {
- dev_err(&pdev->dev, "%s: failed to map phy base\n", __func__);
- ret = -ENOMEM;
- goto fail;
- }
- phy->reg_base = msm_ioremap(pdev, "dsi_phy_regulator", "DSI_PHY_REG");
- if (IS_ERR(phy->reg_base)) {
- dev_err(&pdev->dev,
- "%s: failed to map phy regulator base\n", __func__);
- ret = -ENOMEM;
- goto fail;
- }
-
- ret = dsi_phy_regulator_init(phy);
- if (ret) {
- dev_err(&pdev->dev, "%s: failed to init regulator\n", __func__);
- goto fail;
- }
-
- phy->ahb_clk = devm_clk_get(&pdev->dev, "iface_clk");
- if (IS_ERR(phy->ahb_clk)) {
- pr_err("%s: Unable to get ahb clk\n", __func__);
- ret = PTR_ERR(phy->ahb_clk);
- goto fail;
- }
-
- /* PLL init will call into clk_register which requires
- * register access, so we need to enable power and ahb clock.
- */
- ret = dsi_phy_enable_resource(phy);
- if (ret)
- goto fail;
-
- phy->pll = msm_dsi_pll_init(pdev, phy->cfg->type, phy->id);
- if (!phy->pll)
- dev_info(&pdev->dev,
- "%s: pll init failed, need separate pll clk driver\n",
- __func__);
-
- dsi_phy_disable_resource(phy);
-
- platform_set_drvdata(pdev, phy);
-
- return 0;
-
-fail:
- return ret;
-}
-
-static int dsi_phy_driver_remove(struct platform_device *pdev)
-{
- struct msm_dsi_phy *phy = platform_get_drvdata(pdev);
-
- if (phy && phy->pll) {
- msm_dsi_pll_destroy(phy->pll);
- phy->pll = NULL;
- }
-
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-static struct platform_driver dsi_phy_platform_driver = {
- .probe = dsi_phy_driver_probe,
- .remove = dsi_phy_driver_remove,
- .driver = {
- .name = "msm_dsi_phy",
- .of_match_table = dsi_phy_dt_match,
- },
-};
-
-void __init msm_dsi_phy_driver_register(void)
-{
- platform_driver_register(&dsi_phy_platform_driver);
-}
-
-void __exit msm_dsi_phy_driver_unregister(void)
-{
- platform_driver_unregister(&dsi_phy_platform_driver);
-}
-
-int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
- const unsigned long bit_rate, const unsigned long esc_rate)
-{
- int ret;
-
- if (!phy || !phy->cfg->ops.enable)
- return -EINVAL;
-
- ret = dsi_phy_regulator_enable(phy);
- if (ret) {
- dev_err(&phy->pdev->dev, "%s: regulator enable failed, %d\n",
- __func__, ret);
- return ret;
- }
-
- return phy->cfg->ops.enable(phy, src_pll_id, bit_rate, esc_rate);
-}
-
-void msm_dsi_phy_disable(struct msm_dsi_phy *phy)
-{
- if (!phy || !phy->cfg->ops.disable)
- return;
-
- phy->cfg->ops.disable(phy);
- dsi_phy_regulator_disable(phy);
-}
-
-void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy,
- u32 *clk_pre, u32 *clk_post)
-{
- if (!phy)
- return;
- if (clk_pre)
- *clk_pre = phy->timing.clk_pre;
- if (clk_post)
- *clk_post = phy->timing.clk_post;
-}
-
-struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy)
-{
- if (!phy)
- return NULL;
-
- return phy->pll;
-}
-
--- /dev/null
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/platform_device.h>
+
+#include "dsi_phy.h"
+
+#define S_DIV_ROUND_UP(n, d) \
+ (((n) >= 0) ? (((n) + (d) - 1) / (d)) : (((n) - (d) + 1) / (d)))
+
+static inline s32 linear_inter(s32 tmax, s32 tmin, s32 percent,
+ s32 min_result, bool even)
+{
+ s32 v;
+
+ v = (tmax - tmin) * percent;
+ v = S_DIV_ROUND_UP(v, 100) + tmin;
+ if (even && (v & 0x1))
+ return max_t(s32, min_result, v - 1);
+ else
+ return max_t(s32, min_result, v);
+}
+
+static void dsi_dphy_timing_calc_clk_zero(struct msm_dsi_dphy_timing *timing,
+ s32 ui, s32 coeff, s32 pcnt)
+{
+ s32 tmax, tmin, clk_z;
+ s32 temp;
+
+ /* reset */
+ temp = 300 * coeff - ((timing->clk_prepare >> 1) + 1) * 2 * ui;
+ tmin = S_DIV_ROUND_UP(temp, ui) - 2;
+ if (tmin > 255) {
+ tmax = 511;
+ clk_z = linear_inter(2 * tmin, tmin, pcnt, 0, true);
+ } else {
+ tmax = 255;
+ clk_z = linear_inter(tmax, tmin, pcnt, 0, true);
+ }
+
+ /* adjust */
+ temp = (timing->hs_rqst + timing->clk_prepare + clk_z) & 0x7;
+ timing->clk_zero = clk_z + 8 - temp;
+}
+
+int msm_dsi_dphy_timing_calc(struct msm_dsi_dphy_timing *timing,
+ const unsigned long bit_rate, const unsigned long esc_rate)
+{
+ s32 ui, lpx;
+ s32 tmax, tmin;
+ s32 pcnt0 = 10;
+ s32 pcnt1 = (bit_rate > 1200000000) ? 15 : 10;
+ s32 pcnt2 = 10;
+ s32 pcnt3 = (bit_rate > 180000000) ? 10 : 40;
+ s32 coeff = 1000; /* Precision, should avoid overflow */
+ s32 temp;
+
+ if (!bit_rate || !esc_rate)
+ return -EINVAL;
+
+ ui = mult_frac(NSEC_PER_MSEC, coeff, bit_rate / 1000);
+ lpx = mult_frac(NSEC_PER_MSEC, coeff, esc_rate / 1000);
+
+ tmax = S_DIV_ROUND_UP(95 * coeff, ui) - 2;
+ tmin = S_DIV_ROUND_UP(38 * coeff, ui) - 2;
+ timing->clk_prepare = linear_inter(tmax, tmin, pcnt0, 0, true);
+
+ temp = lpx / ui;
+ if (temp & 0x1)
+ timing->hs_rqst = temp;
+ else
+ timing->hs_rqst = max_t(s32, 0, temp - 2);
+
+ /* Calculate clk_zero after clk_prepare and hs_rqst */
+ dsi_dphy_timing_calc_clk_zero(timing, ui, coeff, pcnt2);
+
+ temp = 105 * coeff + 12 * ui - 20 * coeff;
+ tmax = S_DIV_ROUND_UP(temp, ui) - 2;
+ tmin = S_DIV_ROUND_UP(60 * coeff, ui) - 2;
+ timing->clk_trail = linear_inter(tmax, tmin, pcnt3, 0, true);
+
+ temp = 85 * coeff + 6 * ui;
+ tmax = S_DIV_ROUND_UP(temp, ui) - 2;
+ temp = 40 * coeff + 4 * ui;
+ tmin = S_DIV_ROUND_UP(temp, ui) - 2;
+ timing->hs_prepare = linear_inter(tmax, tmin, pcnt1, 0, true);
+
+ tmax = 255;
+ temp = ((timing->hs_prepare >> 1) + 1) * 2 * ui + 2 * ui;
+ temp = 145 * coeff + 10 * ui - temp;
+ tmin = S_DIV_ROUND_UP(temp, ui) - 2;
+ timing->hs_zero = linear_inter(tmax, tmin, pcnt2, 24, true);
+
+ temp = 105 * coeff + 12 * ui - 20 * coeff;
+ tmax = S_DIV_ROUND_UP(temp, ui) - 2;
+ temp = 60 * coeff + 4 * ui;
+ tmin = DIV_ROUND_UP(temp, ui) - 2;
+ timing->hs_trail = linear_inter(tmax, tmin, pcnt3, 0, true);
+
+ tmax = 255;
+ tmin = S_DIV_ROUND_UP(100 * coeff, ui) - 2;
+ timing->hs_exit = linear_inter(tmax, tmin, pcnt2, 0, true);
+
+ tmax = 63;
+ temp = ((timing->hs_exit >> 1) + 1) * 2 * ui;
+ temp = 60 * coeff + 52 * ui - 24 * ui - temp;
+ tmin = S_DIV_ROUND_UP(temp, 8 * ui) - 1;
+ timing->clk_post = linear_inter(tmax, tmin, pcnt2, 0, false);
+
+ tmax = 63;
+ temp = ((timing->clk_prepare >> 1) + 1) * 2 * ui;
+ temp += ((timing->clk_zero >> 1) + 1) * 2 * ui;
+ temp += 8 * ui + lpx;
+ tmin = S_DIV_ROUND_UP(temp, 8 * ui) - 1;
+ if (tmin > tmax) {
+ temp = linear_inter(2 * tmax, tmin, pcnt2, 0, false);
+ timing->clk_pre = temp >> 1;
+ } else {
+ timing->clk_pre = linear_inter(tmax, tmin, pcnt2, 0, false);
+ }
+
+ timing->ta_go = 3;
+ timing->ta_sure = 0;
+ timing->ta_get = 4;
+
+ DBG("PHY timings: %d, %d, %d, %d, %d, %d, %d, %d, %d, %d",
+ timing->clk_pre, timing->clk_post, timing->clk_zero,
+ timing->clk_trail, timing->clk_prepare, timing->hs_exit,
+ timing->hs_zero, timing->hs_prepare, timing->hs_trail,
+ timing->hs_rqst);
+
+ return 0;
+}
+
+void msm_dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
+ u32 bit_mask)
+{
+ int phy_id = phy->id;
+ u32 val;
+
+ if ((phy_id >= DSI_MAX) || (pll_id >= DSI_MAX))
+ return;
+
+ val = dsi_phy_read(phy->base + reg);
+
+ if (phy->cfg->src_pll_truthtable[phy_id][pll_id])
+ dsi_phy_write(phy->base + reg, val | bit_mask);
+ else
+ dsi_phy_write(phy->base + reg, val & (~bit_mask));
+}
+
+static int dsi_phy_regulator_init(struct msm_dsi_phy *phy)
+{
+ struct regulator_bulk_data *s = phy->supplies;
+ const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
+ struct device *dev = &phy->pdev->dev;
+ int num = phy->cfg->reg_cfg.num;
+ int i, ret;
+
+ for (i = 0; i < num; i++)
+ s[i].supply = regs[i].name;
+
+ ret = devm_regulator_bulk_get(dev, num, s);
+ if (ret < 0) {
+ dev_err(dev, "%s: failed to init regulator, ret=%d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ for (i = 0; i < num; i++) {
+ if ((regs[i].min_voltage >= 0) && (regs[i].max_voltage >= 0)) {
+ ret = regulator_set_voltage(s[i].consumer,
+ regs[i].min_voltage, regs[i].max_voltage);
+ if (ret < 0) {
+ dev_err(dev,
+ "regulator %d set voltage failed, %d\n",
+ i, ret);
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static void dsi_phy_regulator_disable(struct msm_dsi_phy *phy)
+{
+ struct regulator_bulk_data *s = phy->supplies;
+ const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
+ int num = phy->cfg->reg_cfg.num;
+ int i;
+
+ DBG("");
+ for (i = num - 1; i >= 0; i--)
+ if (regs[i].disable_load >= 0)
+ regulator_set_load(s[i].consumer, regs[i].disable_load);
+
+ regulator_bulk_disable(num, s);
+}
+
+static int dsi_phy_regulator_enable(struct msm_dsi_phy *phy)
+{
+ struct regulator_bulk_data *s = phy->supplies;
+ const struct dsi_reg_entry *regs = phy->cfg->reg_cfg.regs;
+ struct device *dev = &phy->pdev->dev;
+ int num = phy->cfg->reg_cfg.num;
+ int ret, i;
+
+ DBG("");
+ for (i = 0; i < num; i++) {
+ if (regs[i].enable_load >= 0) {
+ ret = regulator_set_load(s[i].consumer,
+ regs[i].enable_load);
+ if (ret < 0) {
+ dev_err(dev,
+ "regulator %d set op mode failed, %d\n",
+ i, ret);
+ goto fail;
+ }
+ }
+ }
+
+ ret = regulator_bulk_enable(num, s);
+ if (ret < 0) {
+ dev_err(dev, "regulator enable failed, %d\n", ret);
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ for (i--; i >= 0; i--)
+ regulator_set_load(s[i].consumer, regs[i].disable_load);
+ return ret;
+}
+
+static int dsi_phy_enable_resource(struct msm_dsi_phy *phy)
+{
+ struct device *dev = &phy->pdev->dev;
+ int ret;
+
+ pm_runtime_get_sync(dev);
+
+ ret = clk_prepare_enable(phy->ahb_clk);
+ if (ret) {
+ dev_err(dev, "%s: can't enable ahb clk, %d\n", __func__, ret);
+ pm_runtime_put_sync(dev);
+ }
+
+ return ret;
+}
+
+static void dsi_phy_disable_resource(struct msm_dsi_phy *phy)
+{
+ clk_disable_unprepare(phy->ahb_clk);
+ pm_runtime_put_sync(&phy->pdev->dev);
+}
+
+static const struct of_device_id dsi_phy_dt_match[] = {
+ { .compatible = "qcom,dsi-phy-28nm-hpm",
+ .data = &dsi_phy_28nm_hpm_cfgs },
+ { .compatible = "qcom,dsi-phy-28nm-lp",
+ .data = &dsi_phy_28nm_lp_cfgs },
+ { .compatible = "qcom,dsi-phy-20nm",
+ .data = &dsi_phy_20nm_cfgs },
+ {}
+};
+
+static int dsi_phy_driver_probe(struct platform_device *pdev)
+{
+ struct msm_dsi_phy *phy;
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ int ret;
+
+ phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
+ if (!phy)
+ return -ENOMEM;
+
+ match = of_match_node(dsi_phy_dt_match, dev->of_node);
+ if (!match)
+ return -ENODEV;
+
+ phy->cfg = match->data;
+ phy->pdev = pdev;
+
+ ret = of_property_read_u32(dev->of_node,
+ "qcom,dsi-phy-index", &phy->id);
+ if (ret) {
+ dev_err(dev, "%s: PHY index not specified, %d\n",
+ __func__, ret);
+ goto fail;
+ }
+
+ phy->regulator_ldo_mode = of_property_read_bool(dev->of_node,
+ "qcom,dsi-phy-regulator-ldo-mode");
+
+ phy->base = msm_ioremap(pdev, "dsi_phy", "DSI_PHY");
+ if (IS_ERR(phy->base)) {
+ dev_err(dev, "%s: failed to map phy base\n", __func__);
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ phy->reg_base = msm_ioremap(pdev, "dsi_phy_regulator",
+ "DSI_PHY_REG");
+ if (IS_ERR(phy->reg_base)) {
+ dev_err(dev, "%s: failed to map phy regulator base\n",
+ __func__);
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ ret = dsi_phy_regulator_init(phy);
+ if (ret) {
+ dev_err(dev, "%s: failed to init regulator\n", __func__);
+ goto fail;
+ }
+
+ phy->ahb_clk = devm_clk_get(dev, "iface_clk");
+ if (IS_ERR(phy->ahb_clk)) {
+ dev_err(dev, "%s: Unable to get ahb clk\n", __func__);
+ ret = PTR_ERR(phy->ahb_clk);
+ goto fail;
+ }
+
+ /* PLL init will call into clk_register which requires
+ * register access, so we need to enable power and ahb clock.
+ */
+ ret = dsi_phy_enable_resource(phy);
+ if (ret)
+ goto fail;
+
+ phy->pll = msm_dsi_pll_init(pdev, phy->cfg->type, phy->id);
+ if (!phy->pll)
+ dev_info(dev,
+ "%s: pll init failed, need separate pll clk driver\n",
+ __func__);
+
+ dsi_phy_disable_resource(phy);
+
+ platform_set_drvdata(pdev, phy);
+
+ return 0;
+
+fail:
+ return ret;
+}
+
+static int dsi_phy_driver_remove(struct platform_device *pdev)
+{
+ struct msm_dsi_phy *phy = platform_get_drvdata(pdev);
+
+ if (phy && phy->pll) {
+ msm_dsi_pll_destroy(phy->pll);
+ phy->pll = NULL;
+ }
+
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver dsi_phy_platform_driver = {
+ .probe = dsi_phy_driver_probe,
+ .remove = dsi_phy_driver_remove,
+ .driver = {
+ .name = "msm_dsi_phy",
+ .of_match_table = dsi_phy_dt_match,
+ },
+};
+
+void __init msm_dsi_phy_driver_register(void)
+{
+ platform_driver_register(&dsi_phy_platform_driver);
+}
+
+void __exit msm_dsi_phy_driver_unregister(void)
+{
+ platform_driver_unregister(&dsi_phy_platform_driver);
+}
+
+int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
+ const unsigned long bit_rate, const unsigned long esc_rate)
+{
+ struct device *dev = &phy->pdev->dev;
+ int ret;
+
+ if (!phy || !phy->cfg->ops.enable)
+ return -EINVAL;
+
+ ret = dsi_phy_regulator_enable(phy);
+ if (ret) {
+ dev_err(dev, "%s: regulator enable failed, %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = phy->cfg->ops.enable(phy, src_pll_id, bit_rate, esc_rate);
+ if (ret) {
+ dev_err(dev, "%s: phy enable failed, %d\n", __func__, ret);
+ dsi_phy_regulator_disable(phy);
+ return ret;
+ }
+
+ return 0;
+}
+
+void msm_dsi_phy_disable(struct msm_dsi_phy *phy)
+{
+ if (!phy || !phy->cfg->ops.disable)
+ return;
+
+ phy->cfg->ops.disable(phy);
+
+ dsi_phy_regulator_disable(phy);
+}
+
+void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy,
+ u32 *clk_pre, u32 *clk_post)
+{
+ if (!phy)
+ return;
+
+ if (clk_pre)
+ *clk_pre = phy->timing.clk_pre;
+ if (clk_post)
+ *clk_post = phy->timing.clk_post;
+}
+
+struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy)
+{
+ if (!phy)
+ return NULL;
+
+ return phy->pll;
+}
+
--- /dev/null
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __DSI_PHY_H__
+#define __DSI_PHY_H__
+
+#include <linux/regulator/consumer.h>
+
+#include "dsi.h"
+
+#define dsi_phy_read(offset) msm_readl((offset))
+#define dsi_phy_write(offset, data) msm_writel((data), (offset))
+
+struct msm_dsi_phy_ops {
+ int (*enable)(struct msm_dsi_phy *phy, int src_pll_id,
+ const unsigned long bit_rate, const unsigned long esc_rate);
+ void (*disable)(struct msm_dsi_phy *phy);
+};
+
+struct msm_dsi_phy_cfg {
+ enum msm_dsi_phy_type type;
+ struct dsi_reg_config reg_cfg;
+ struct msm_dsi_phy_ops ops;
+
+ /*
+ * Each cell {phy_id, pll_id} of the truth table indicates
+ * if the source PLL selection bit should be set for each PHY.
+ * Fill default H/W values in illegal cells, eg. cell {0, 1}.
+ */
+ bool src_pll_truthtable[DSI_MAX][DSI_MAX];
+};
+
+extern const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs;
+extern const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs;
+extern const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs;
+
+struct msm_dsi_dphy_timing {
+ u32 clk_pre;
+ u32 clk_post;
+ u32 clk_zero;
+ u32 clk_trail;
+ u32 clk_prepare;
+ u32 hs_exit;
+ u32 hs_zero;
+ u32 hs_prepare;
+ u32 hs_trail;
+ u32 hs_rqst;
+ u32 ta_go;
+ u32 ta_sure;
+ u32 ta_get;
+};
+
+struct msm_dsi_phy {
+ struct platform_device *pdev;
+ void __iomem *base;
+ void __iomem *reg_base;
+ int id;
+
+ struct clk *ahb_clk;
+ struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
+
+ struct msm_dsi_dphy_timing timing;
+ const struct msm_dsi_phy_cfg *cfg;
+
+ bool regulator_ldo_mode;
+
+ struct msm_dsi_pll *pll;
+};
+
+/*
+ * PHY internal functions
+ */
+int msm_dsi_dphy_timing_calc(struct msm_dsi_dphy_timing *timing,
+ const unsigned long bit_rate, const unsigned long esc_rate);
+void msm_dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
+ u32 bit_mask);
+
+#endif /* __DSI_PHY_H__ */
+
--- /dev/null
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "dsi_phy.h"
+#include "dsi.xml.h"
+
+static void dsi_20nm_dphy_set_timing(struct msm_dsi_phy *phy,
+ struct msm_dsi_dphy_timing *timing)
+{
+ void __iomem *base = phy->base;
+
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_0,
+ DSI_20nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_1,
+ DSI_20nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_2,
+ DSI_20nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
+ if (timing->clk_zero & BIT(8))
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_3,
+ DSI_20nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_4,
+ DSI_20nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_5,
+ DSI_20nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_6,
+ DSI_20nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_7,
+ DSI_20nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_8,
+ DSI_20nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_9,
+ DSI_20nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
+ DSI_20nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_10,
+ DSI_20nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
+ dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_11,
+ DSI_20nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
+}
+
+static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
+{
+ void __iomem *base = phy->reg_base;
+
+ if (!enable) {
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
+ return;
+ }
+
+ if (phy->regulator_ldo_mode) {
+ dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x1d);
+ return;
+ }
+
+ /* non LDO mode */
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_1, 0x03);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_2, 0x03);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_3, 0x00);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_4, 0x20);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0x01);
+ dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x00);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03);
+}
+
+static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
+ const unsigned long bit_rate, const unsigned long esc_rate)
+{
+ struct msm_dsi_dphy_timing *timing = &phy->timing;
+ int i;
+ void __iomem *base = phy->base;
+ u32 cfg_4[4] = {0x20, 0x40, 0x20, 0x00};
+
+ DBG("");
+
+ if (msm_dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
+ dev_err(&phy->pdev->dev,
+ "%s: D-PHY timing calculation failed\n", __func__);
+ return -EINVAL;
+ }
+
+ dsi_20nm_phy_regulator_ctrl(phy, true);
+
+ dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff);
+
+ msm_dsi_phy_set_src_pll(phy, src_pll_id,
+ REG_DSI_20nm_PHY_GLBL_TEST_CTRL,
+ DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
+
+ for (i = 0; i < 4; i++) {
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_3(i),
+ (i >> 1) * 0x40);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_0(i), 0x01);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_1(i), 0x46);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_0(i), 0x02);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_1(i), 0xa0);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_4(i), cfg_4[i]);
+ }
+
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_3, 0x80);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR0, 0x01);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR1, 0x46);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_0, 0x00);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_1, 0xa0);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_2, 0x00);
+ dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_4, 0x00);
+
+ dsi_20nm_dphy_set_timing(phy, timing);
+
+ dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_1, 0x00);
+
+ dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_1, 0x06);
+
+ /* make sure everything is written before enable */
+ wmb();
+ dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_0, 0x7f);
+
+ return 0;
+}
+
+static void dsi_20nm_phy_disable(struct msm_dsi_phy *phy)
+{
+ dsi_phy_write(phy->base + REG_DSI_20nm_PHY_CTRL_0, 0);
+ dsi_20nm_phy_regulator_ctrl(phy, false);
+}
+
+const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs = {
+ .type = MSM_DSI_PHY_20NM,
+ .src_pll_truthtable = { {false, true}, {false, true} },
+ .reg_cfg = {
+ .num = 2,
+ .regs = {
+ {"vddio", 1800000, 1800000, 100000, 100},
+ {"vcca", 1000000, 1000000, 10000, 100},
+ },
+ },
+ .ops = {
+ .enable = dsi_20nm_phy_enable,
+ .disable = dsi_20nm_phy_disable,
+ }
+};
+
--- /dev/null
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "dsi_phy.h"
+#include "dsi.xml.h"
+
+static void dsi_28nm_dphy_set_timing(struct msm_dsi_phy *phy,
+ struct msm_dsi_dphy_timing *timing)
+{
+ void __iomem *base = phy->base;
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_0,
+ DSI_28nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_1,
+ DSI_28nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_2,
+ DSI_28nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
+ if (timing->clk_zero & BIT(8))
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_3,
+ DSI_28nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_4,
+ DSI_28nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_5,
+ DSI_28nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_6,
+ DSI_28nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_7,
+ DSI_28nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_8,
+ DSI_28nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_9,
+ DSI_28nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
+ DSI_28nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_10,
+ DSI_28nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_11,
+ DSI_28nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
+}
+
+static void dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
+{
+ void __iomem *base = phy->reg_base;
+
+ if (!enable) {
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
+ return;
+ }
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_5, 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_3, 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_2, 0x3);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_1, 0x9);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x7);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_4, 0x20);
+}
+
+static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
+ const unsigned long bit_rate, const unsigned long esc_rate)
+{
+ struct msm_dsi_dphy_timing *timing = &phy->timing;
+ int i;
+ void __iomem *base = phy->base;
+
+ DBG("");
+
+ if (msm_dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
+ dev_err(&phy->pdev->dev,
+ "%s: D-PHY timing calculation failed\n", __func__);
+ return -EINVAL;
+ }
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_0, 0xff);
+
+ dsi_28nm_phy_regulator_ctrl(phy, true);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LDO_CNTRL, 0x00);
+
+ dsi_28nm_dphy_set_timing(phy, timing);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_1, 0x00);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_1, 0x6);
+
+ for (i = 0; i < 4; i++) {
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_0(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_1(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_2(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_3(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_DATAPATH(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_DEBUG_SEL(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_0(i), 0x1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_1(i), 0x97);
+ }
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(0), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(1), 0x5);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(2), 0xa);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(3), 0xf);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_CFG_1, 0xc0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR0, 0x1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR1, 0xbb);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
+
+ msm_dsi_phy_set_src_pll(phy, src_pll_id,
+ REG_DSI_28nm_PHY_GLBL_TEST_CTRL,
+ DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
+
+ return 0;
+}
+
+static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
+{
+ dsi_phy_write(phy->base + REG_DSI_28nm_PHY_CTRL_0, 0);
+ dsi_28nm_phy_regulator_ctrl(phy, false);
+
+ /*
+ * Wait for the registers writes to complete in order to
+ * ensure that the phy is completely disabled
+ */
+ wmb();
+}
+
+const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs = {
+ .type = MSM_DSI_PHY_28NM_HPM,
+ .src_pll_truthtable = { {true, true}, {false, true} },
+ .reg_cfg = {
+ .num = 1,
+ .regs = {
+ {"vddio", 1800000, 1800000, 100000, 100},
+ },
+ },
+ .ops = {
+ .enable = dsi_28nm_phy_enable,
+ .disable = dsi_28nm_phy_disable,
+ },
+};
+
+const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = {
+ .type = MSM_DSI_PHY_28NM_LP,
+ .src_pll_truthtable = { {true, true}, {true, true} },
+ .reg_cfg = {
+ .num = 1,
+ .regs = {
+ {"vddio", 1800000, 1800000, 100000, 100},
+ },
+ },
+ .ops = {
+ .enable = dsi_28nm_phy_enable,
+ .disable = dsi_28nm_phy_disable,
+ },
+};
+
projects / karo-tx-linux.git / commitdiff