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/*
* 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_CFG_4(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_LNCK_CFG_4, 0);
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", 100000, 100},
},
},
.ops = {
.enable = dsi_28nm_phy_enable,
.disable = dsi_28nm_phy_disable,
},
.io_start = { 0xfd922b00, 0xfd923100 },
.num_dsi_phy = 2,
};
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", 100000, 100}, /* 1.8 V */
},
},
.ops = {
.enable = dsi_28nm_phy_enable,
.disable = dsi_28nm_phy_disable,
},
.io_start = { 0x1a98500 },
.num_dsi_phy = 1,
};
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