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drm/mediatek: separate mipi_tx to different file 

Different IC has different mipi_tx setting of dsi.
This patch separates the mipi_tx hardware relate part for mt8173.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Jitao Shi 2019-08-07 16:46:44 +08:00 коммит произвёл CK Hu
Родитель f92013259d
Коммит 78e01a8d0f
4 изменённых файлов: 358 добавлений и 315 удалений
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1
drivers/gpu/drm/mediatek/Makefile
Просмотреть файл

@ -12,6 +12,7 @@ mediatek-drm-y := mtk_disp_color.o \
mtk_drm_plane.o \ mtk_drm_plane.o \
mtk_dsi.o \ mtk_dsi.o \
mtk_mipi_tx.o \ mtk_mipi_tx.o \
mtk_mt8173_mipi_tx.o \
mtk_dpi.o mtk_dpi.o
obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o

336
drivers/gpu/drm/mediatek/mtk_mipi_tx.c
Просмотреть файл

@ -3,292 +3,39 @@
* Copyright (c) 2015 MediaTek Inc. * Copyright (c) 2015 MediaTek Inc.
*/ */
#include <linux/clk.h> #include "mtk_mipi_tx.h"
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#define MIPITX_DSI_CON 0x00 inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw)
#define RG_DSI_LDOCORE_EN BIT(0)
#define RG_DSI_CKG_LDOOUT_EN BIT(1)
#define RG_DSI_BCLK_SEL (3 << 2)
#define RG_DSI_LD_IDX_SEL (7 << 4)
#define RG_DSI_PHYCLK_SEL (2 << 8)
#define RG_DSI_DSICLK_FREQ_SEL BIT(10)
#define RG_DSI_LPTX_CLMP_EN BIT(11)
#define MIPITX_DSI_CLOCK_LANE 0x04
#define MIPITX_DSI_DATA_LANE0 0x08
#define MIPITX_DSI_DATA_LANE1 0x0c
#define MIPITX_DSI_DATA_LANE2 0x10
#define MIPITX_DSI_DATA_LANE3 0x14
#define RG_DSI_LNTx_LDOOUT_EN BIT(0)
#define RG_DSI_LNTx_CKLANE_EN BIT(1)
#define RG_DSI_LNTx_LPTX_IPLUS1 BIT(2)
#define RG_DSI_LNTx_LPTX_IPLUS2 BIT(3)
#define RG_DSI_LNTx_LPTX_IMINUS BIT(4)
#define RG_DSI_LNTx_LPCD_IPLUS BIT(5)
#define RG_DSI_LNTx_LPCD_IMINUS BIT(6)
#define RG_DSI_LNTx_RT_CODE (0xf << 8)
#define MIPITX_DSI_TOP_CON 0x40
#define RG_DSI_LNT_INTR_EN BIT(0)
#define RG_DSI_LNT_HS_BIAS_EN BIT(1)
#define RG_DSI_LNT_IMP_CAL_EN BIT(2)
#define RG_DSI_LNT_TESTMODE_EN BIT(3)
#define RG_DSI_LNT_IMP_CAL_CODE (0xf << 4)
#define RG_DSI_LNT_AIO_SEL (7 << 8)
#define RG_DSI_PAD_TIE_LOW_EN BIT(11)
#define RG_DSI_DEBUG_INPUT_EN BIT(12)
#define RG_DSI_PRESERVE (7 << 13)
#define MIPITX_DSI_BG_CON 0x44
#define RG_DSI_BG_CORE_EN BIT(0)
#define RG_DSI_BG_CKEN BIT(1)
#define RG_DSI_BG_DIV (0x3 << 2)
#define RG_DSI_BG_FAST_CHARGE BIT(4)
#define RG_DSI_VOUT_MSK (0x3ffff << 5)
#define RG_DSI_V12_SEL (7 << 5)
#define RG_DSI_V10_SEL (7 << 8)
#define RG_DSI_V072_SEL (7 << 11)
#define RG_DSI_V04_SEL (7 << 14)
#define RG_DSI_V032_SEL (7 << 17)
#define RG_DSI_V02_SEL (7 << 20)
#define RG_DSI_BG_R1_TRIM (0xf << 24)
#define RG_DSI_BG_R2_TRIM (0xf << 28)
#define MIPITX_DSI_PLL_CON0 0x50
#define RG_DSI_MPPLL_PLL_EN BIT(0)
#define RG_DSI_MPPLL_DIV_MSK (0x1ff << 1)
#define RG_DSI_MPPLL_PREDIV (3 << 1)
#define RG_DSI_MPPLL_TXDIV0 (3 << 3)
#define RG_DSI_MPPLL_TXDIV1 (3 << 5)
#define RG_DSI_MPPLL_POSDIV (7 << 7)
#define RG_DSI_MPPLL_MONVC_EN BIT(10)
#define RG_DSI_MPPLL_MONREF_EN BIT(11)
#define RG_DSI_MPPLL_VOD_EN BIT(12)
#define MIPITX_DSI_PLL_CON1 0x54
#define RG_DSI_MPPLL_SDM_FRA_EN BIT(0)
#define RG_DSI_MPPLL_SDM_SSC_PH_INIT BIT(1)
#define RG_DSI_MPPLL_SDM_SSC_EN BIT(2)
#define RG_DSI_MPPLL_SDM_SSC_PRD (0xffff << 16)
#define MIPITX_DSI_PLL_CON2 0x58
#define MIPITX_DSI_PLL_TOP 0x64
#define RG_DSI_MPPLL_PRESERVE (0xff << 8)
#define MIPITX_DSI_PLL_PWR 0x68
#define RG_DSI_MPPLL_SDM_PWR_ON BIT(0)
#define RG_DSI_MPPLL_SDM_ISO_EN BIT(1)
#define RG_DSI_MPPLL_SDM_PWR_ACK BIT(8)
#define MIPITX_DSI_SW_CTRL 0x80
#define SW_CTRL_EN BIT(0)
#define MIPITX_DSI_SW_CTRL_CON0 0x84
#define SW_LNTC_LPTX_PRE_OE BIT(0)
#define SW_LNTC_LPTX_OE BIT(1)
#define SW_LNTC_LPTX_P BIT(2)
#define SW_LNTC_LPTX_N BIT(3)
#define SW_LNTC_HSTX_PRE_OE BIT(4)
#define SW_LNTC_HSTX_OE BIT(5)
#define SW_LNTC_HSTX_ZEROCLK BIT(6)
#define SW_LNT0_LPTX_PRE_OE BIT(7)
#define SW_LNT0_LPTX_OE BIT(8)
#define SW_LNT0_LPTX_P BIT(9)
#define SW_LNT0_LPTX_N BIT(10)
#define SW_LNT0_HSTX_PRE_OE BIT(11)
#define SW_LNT0_HSTX_OE BIT(12)
#define SW_LNT0_LPRX_EN BIT(13)
#define SW_LNT1_LPTX_PRE_OE BIT(14)
#define SW_LNT1_LPTX_OE BIT(15)
#define SW_LNT1_LPTX_P BIT(16)
#define SW_LNT1_LPTX_N BIT(17)
#define SW_LNT1_HSTX_PRE_OE BIT(18)
#define SW_LNT1_HSTX_OE BIT(19)
#define SW_LNT2_LPTX_PRE_OE BIT(20)
#define SW_LNT2_LPTX_OE BIT(21)
#define SW_LNT2_LPTX_P BIT(22)
#define SW_LNT2_LPTX_N BIT(23)
#define SW_LNT2_HSTX_PRE_OE BIT(24)
#define SW_LNT2_HSTX_OE BIT(25)
struct mtk_mipitx_data {
const u32 mppll_preserve;
};
struct mtk_mipi_tx {
struct device *dev;
void __iomem *regs;
u32 data_rate;
const struct mtk_mipitx_data *driver_data;
struct clk_hw pll_hw;
struct clk *pll;
};
static inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw)
{ {
return container_of(hw, struct mtk_mipi_tx, pll_hw); return container_of(hw, struct mtk_mipi_tx, pll_hw);
} }
static void mtk_mipi_tx_clear_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, void mtk_mipi_tx_clear_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
u32 bits) u32 bits)
{ {
u32 temp = readl(mipi_tx->regs + offset); u32 temp = readl(mipi_tx->regs + offset);
writel(temp & ~bits, mipi_tx->regs + offset); writel(temp & ~bits, mipi_tx->regs + offset);
} }
static void mtk_mipi_tx_set_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, void mtk_mipi_tx_set_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
u32 bits) u32 bits)
{ {
u32 temp = readl(mipi_tx->regs + offset); u32 temp = readl(mipi_tx->regs + offset);
writel(temp | bits, mipi_tx->regs + offset); writel(temp | bits, mipi_tx->regs + offset);
} }
static void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
u32 mask, u32 data) u32 mask, u32 data)
{ {
u32 temp = readl(mipi_tx->regs + offset); u32 temp = readl(mipi_tx->regs + offset);
writel((temp & ~mask) | (data & mask), mipi_tx->regs + offset); writel((temp & ~mask) | (data & mask), mipi_tx->regs + offset);
} }
static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
{ unsigned long parent_rate)
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
u8 txdiv, txdiv0, txdiv1;
u64 pcw;
dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate);
if (mipi_tx->data_rate >= 500000000) {
txdiv = 1;
txdiv0 = 0;
txdiv1 = 0;
} else if (mipi_tx->data_rate >= 250000000) {
txdiv = 2;
txdiv0 = 1;
txdiv1 = 0;
} else if (mipi_tx->data_rate >= 125000000) {
txdiv = 4;
txdiv0 = 2;
txdiv1 = 0;
} else if (mipi_tx->data_rate > 62000000) {
txdiv = 8;
txdiv0 = 2;
txdiv1 = 1;
} else if (mipi_tx->data_rate >= 50000000) {
txdiv = 16;
txdiv0 = 2;
txdiv1 = 2;
} else {
return -EINVAL;
}
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON,
RG_DSI_VOUT_MSK |
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN,
(4 << 20) | (4 << 17) | (4 << 14) |
(4 << 11) | (4 << 8) | (4 << 5) |
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN);
usleep_range(30, 100);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
(8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_CON,
RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
RG_DSI_MPPLL_SDM_PWR_ON |
RG_DSI_MPPLL_SDM_ISO_EN,
RG_DSI_MPPLL_SDM_PWR_ON);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_PLL_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 |
RG_DSI_MPPLL_PREDIV,
(txdiv0 << 3) | (txdiv1 << 5));
/*
* PLL PCW config
* PCW bit 24~30 = integer part of pcw
* PCW bit 0~23 = fractional part of pcw
* pcw = data_Rate*4*txdiv/(Ref_clk*2);
* Post DIV =4, so need data_Rate*4
* Ref_clk is 26MHz
*/
pcw = div_u64(((u64)mipi_tx->data_rate * 2 * txdiv) << 24,
26000000);
writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
RG_DSI_MPPLL_SDM_FRA_EN);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN);
usleep_range(20, 100);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
RG_DSI_MPPLL_SDM_SSC_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
RG_DSI_MPPLL_PRESERVE,
mipi_tx->driver_data->mppll_preserve);
return 0;
}
static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
{
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
dev_dbg(mipi_tx->dev, "unprepare\n");
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_PLL_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
RG_DSI_MPPLL_PRESERVE, 0);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
RG_DSI_MPPLL_SDM_ISO_EN |
RG_DSI_MPPLL_SDM_PWR_ON,
RG_DSI_MPPLL_SDM_ISO_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_LNT_HS_BIAS_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_CON,
RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_BG_CON,
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_DIV_MSK);
}
static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
return clamp_val(rate, 50000000, 1250000000);
}
static int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{ {
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw); struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
@ -299,37 +46,14 @@ static int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
return 0; return 0;
} }
static unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw, unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate) unsigned long parent_rate)
{ {
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw); struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
return mipi_tx->data_rate; return mipi_tx->data_rate;
} }
static const struct clk_ops mtk_mipi_tx_pll_ops = {
.prepare = mtk_mipi_tx_pll_prepare,
.unprepare = mtk_mipi_tx_pll_unprepare,
.round_rate = mtk_mipi_tx_pll_round_rate,
.set_rate = mtk_mipi_tx_pll_set_rate,
.recalc_rate = mtk_mipi_tx_pll_recalc_rate,
};
static int mtk_mipi_tx_power_on_signal(struct phy *phy)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
u32 reg;
for (reg = MIPITX_DSI_CLOCK_LANE;
reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
mtk_mipi_tx_set_bits(mipi_tx, reg, RG_DSI_LNTx_LDOOUT_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_PAD_TIE_LOW_EN);
return 0;
}
static int mtk_mipi_tx_power_on(struct phy *phy) static int mtk_mipi_tx_power_on(struct phy *phy)
{ {
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy); struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
@ -341,30 +65,16 @@ static int mtk_mipi_tx_power_on(struct phy *phy)
return ret; return ret;
/* Enable DSI Lane LDO outputs, disable pad tie low */ /* Enable DSI Lane LDO outputs, disable pad tie low */
mtk_mipi_tx_power_on_signal(phy); mipi_tx->driver_data->mipi_tx_enable_signal(phy);
return 0; return 0;
} }
static void mtk_mipi_tx_power_off_signal(struct phy *phy)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
u32 reg;
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_PAD_TIE_LOW_EN);
for (reg = MIPITX_DSI_CLOCK_LANE;
reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
mtk_mipi_tx_clear_bits(mipi_tx, reg, RG_DSI_LNTx_LDOOUT_EN);
}
static int mtk_mipi_tx_power_off(struct phy *phy) static int mtk_mipi_tx_power_off(struct phy *phy)
{ {
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy); struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
/* Enable pad tie low, disable DSI Lane LDO outputs */ /* Enable pad tie low, disable DSI Lane LDO outputs */
mtk_mipi_tx_power_off_signal(phy); mipi_tx->driver_data->mipi_tx_disable_signal(phy);
/* Disable PLL and power down core */ /* Disable PLL and power down core */
clk_disable_unprepare(mipi_tx->pll); clk_disable_unprepare(mipi_tx->pll);
@ -383,10 +93,9 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct mtk_mipi_tx *mipi_tx; struct mtk_mipi_tx *mipi_tx;
struct resource *mem; struct resource *mem;
struct clk *ref_clk;
const char *ref_clk_name; const char *ref_clk_name;
struct clk *ref_clk;
struct clk_init_data clk_init = { struct clk_init_data clk_init = {
.ops = &mtk_mipi_tx_pll_ops,
.num_parents = 1, .num_parents = 1,
.parent_names = (const char * const *)&ref_clk_name, .parent_names = (const char * const *)&ref_clk_name,
.flags = CLK_SET_RATE_GATE, .flags = CLK_SET_RATE_GATE,
@ -400,6 +109,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
return -ENOMEM; return -ENOMEM;
mipi_tx->driver_data = of_device_get_match_data(dev); mipi_tx->driver_data = of_device_get_match_data(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mipi_tx->regs = devm_ioremap_resource(dev, mem); mipi_tx->regs = devm_ioremap_resource(dev, mem);
if (IS_ERR(mipi_tx->regs)) { if (IS_ERR(mipi_tx->regs)) {
@ -414,6 +124,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
dev_err(dev, "Failed to get reference clock: %d\n", ret); dev_err(dev, "Failed to get reference clock: %d\n", ret);
return ret; return ret;
} }
ref_clk_name = __clk_get_name(ref_clk); ref_clk_name = __clk_get_name(ref_clk);
ret = of_property_read_string(dev->of_node, "clock-output-names", ret = of_property_read_string(dev->of_node, "clock-output-names",
@ -423,6 +134,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
return ret; return ret;
} }
clk_init.ops = mipi_tx->driver_data->mipi_tx_clk_ops;
mipi_tx->pll_hw.init = &clk_init; mipi_tx->pll_hw.init = &clk_init;
mipi_tx->pll = devm_clk_register(dev, &mipi_tx->pll_hw); mipi_tx->pll = devm_clk_register(dev, &mipi_tx->pll_hw);
if (IS_ERR(mipi_tx->pll)) { if (IS_ERR(mipi_tx->pll)) {
@ -457,20 +170,12 @@ static int mtk_mipi_tx_remove(struct platform_device *pdev)
return 0; return 0;
} }
static const struct mtk_mipitx_data mt2701_mipitx_data = {
.mppll_preserve = (3 << 8)
};
static const struct mtk_mipitx_data mt8173_mipitx_data = {
.mppll_preserve = (0 << 8)
};
static const struct of_device_id mtk_mipi_tx_match[] = { static const struct of_device_id mtk_mipi_tx_match[] = {
{ .compatible = "mediatek,mt2701-mipi-tx", { .compatible = "mediatek,mt2701-mipi-tx",
.data = &mt2701_mipitx_data }, .data = &mt2701_mipitx_data },
{ .compatible = "mediatek,mt8173-mipi-tx", { .compatible = "mediatek,mt8173-mipi-tx",
.data = &mt8173_mipitx_data }, .data = &mt8173_mipitx_data },
{}, { },
}; };
struct platform_driver mtk_mipi_tx_driver = { struct platform_driver mtk_mipi_tx_driver = {
@ -481,3 +186,4 @@ struct platform_driver mtk_mipi_tx_driver = {
.of_match_table = mtk_mipi_tx_match, .of_match_table = mtk_mipi_tx_match,
}, },
}; };

48
drivers/gpu/drm/mediatek/mtk_mipi_tx.h Normal file
Просмотреть файл

@ -0,0 +1,48 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2019 MediaTek Inc.
* Author: Jitao Shi <jitao.shi@mediatek.com>
*/
#ifndef _MTK_MIPI_TX_H
#define _MTK_MIPI_TX_H
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
struct mtk_mipitx_data {
const u32 mppll_preserve;
const struct clk_ops *mipi_tx_clk_ops;
void (*mipi_tx_enable_signal)(struct phy *phy);
void (*mipi_tx_disable_signal)(struct phy *phy);
};
struct mtk_mipi_tx {
struct device *dev;
void __iomem *regs;
u32 data_rate;
const struct mtk_mipitx_data *driver_data;
struct clk_hw pll_hw;
struct clk *pll;
};
struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw);
void mtk_mipi_tx_clear_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, u32 bits);
void mtk_mipi_tx_set_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, u32 bits);
void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset, u32 mask,
u32 data);
int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate);
unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate);
extern const struct mtk_mipitx_data mt2701_mipitx_data;
extern const struct mtk_mipitx_data mt8173_mipitx_data;
#endif

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drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c Normal file
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 MediaTek Inc.
* Author: jitao.shi <jitao.shi@mediatek.com>
*/
#include "mtk_mipi_tx.h"
#define MIPITX_DSI_CON 0x00
#define RG_DSI_LDOCORE_EN BIT(0)
#define RG_DSI_CKG_LDOOUT_EN BIT(1)
#define RG_DSI_BCLK_SEL (3 << 2)
#define RG_DSI_LD_IDX_SEL (7 << 4)
#define RG_DSI_PHYCLK_SEL (2 << 8)
#define RG_DSI_DSICLK_FREQ_SEL BIT(10)
#define RG_DSI_LPTX_CLMP_EN BIT(11)
#define MIPITX_DSI_CLOCK_LANE 0x04
#define MIPITX_DSI_DATA_LANE0 0x08
#define MIPITX_DSI_DATA_LANE1 0x0c
#define MIPITX_DSI_DATA_LANE2 0x10
#define MIPITX_DSI_DATA_LANE3 0x14
#define RG_DSI_LNTx_LDOOUT_EN BIT(0)
#define RG_DSI_LNTx_CKLANE_EN BIT(1)
#define RG_DSI_LNTx_LPTX_IPLUS1 BIT(2)
#define RG_DSI_LNTx_LPTX_IPLUS2 BIT(3)
#define RG_DSI_LNTx_LPTX_IMINUS BIT(4)
#define RG_DSI_LNTx_LPCD_IPLUS BIT(5)
#define RG_DSI_LNTx_LPCD_IMINUS BIT(6)
#define RG_DSI_LNTx_RT_CODE (0xf << 8)
#define MIPITX_DSI_TOP_CON 0x40
#define RG_DSI_LNT_INTR_EN BIT(0)
#define RG_DSI_LNT_HS_BIAS_EN BIT(1)
#define RG_DSI_LNT_IMP_CAL_EN BIT(2)
#define RG_DSI_LNT_TESTMODE_EN BIT(3)
#define RG_DSI_LNT_IMP_CAL_CODE (0xf << 4)
#define RG_DSI_LNT_AIO_SEL (7 << 8)
#define RG_DSI_PAD_TIE_LOW_EN BIT(11)
#define RG_DSI_DEBUG_INPUT_EN BIT(12)
#define RG_DSI_PRESERVE (7 << 13)
#define MIPITX_DSI_BG_CON 0x44
#define RG_DSI_BG_CORE_EN BIT(0)
#define RG_DSI_BG_CKEN BIT(1)
#define RG_DSI_BG_DIV (0x3 << 2)
#define RG_DSI_BG_FAST_CHARGE BIT(4)
#define RG_DSI_VOUT_MSK (0x3ffff << 5)
#define RG_DSI_V12_SEL (7 << 5)
#define RG_DSI_V10_SEL (7 << 8)
#define RG_DSI_V072_SEL (7 << 11)
#define RG_DSI_V04_SEL (7 << 14)
#define RG_DSI_V032_SEL (7 << 17)
#define RG_DSI_V02_SEL (7 << 20)
#define RG_DSI_BG_R1_TRIM (0xf << 24)
#define RG_DSI_BG_R2_TRIM (0xf << 28)
#define MIPITX_DSI_PLL_CON0 0x50
#define RG_DSI_MPPLL_PLL_EN BIT(0)
#define RG_DSI_MPPLL_DIV_MSK (0x1ff << 1)
#define RG_DSI_MPPLL_PREDIV (3 << 1)
#define RG_DSI_MPPLL_TXDIV0 (3 << 3)
#define RG_DSI_MPPLL_TXDIV1 (3 << 5)
#define RG_DSI_MPPLL_POSDIV (7 << 7)
#define RG_DSI_MPPLL_MONVC_EN BIT(10)
#define RG_DSI_MPPLL_MONREF_EN BIT(11)
#define RG_DSI_MPPLL_VOD_EN BIT(12)
#define MIPITX_DSI_PLL_CON1 0x54
#define RG_DSI_MPPLL_SDM_FRA_EN BIT(0)
#define RG_DSI_MPPLL_SDM_SSC_PH_INIT BIT(1)
#define RG_DSI_MPPLL_SDM_SSC_EN BIT(2)
#define RG_DSI_MPPLL_SDM_SSC_PRD (0xffff << 16)
#define MIPITX_DSI_PLL_CON2 0x58
#define MIPITX_DSI_PLL_TOP 0x64
#define RG_DSI_MPPLL_PRESERVE (0xff << 8)
#define MIPITX_DSI_PLL_PWR 0x68
#define RG_DSI_MPPLL_SDM_PWR_ON BIT(0)
#define RG_DSI_MPPLL_SDM_ISO_EN BIT(1)
#define RG_DSI_MPPLL_SDM_PWR_ACK BIT(8)
#define MIPITX_DSI_SW_CTRL 0x80
#define SW_CTRL_EN BIT(0)
#define MIPITX_DSI_SW_CTRL_CON0 0x84
#define SW_LNTC_LPTX_PRE_OE BIT(0)
#define SW_LNTC_LPTX_OE BIT(1)
#define SW_LNTC_LPTX_P BIT(2)
#define SW_LNTC_LPTX_N BIT(3)
#define SW_LNTC_HSTX_PRE_OE BIT(4)
#define SW_LNTC_HSTX_OE BIT(5)
#define SW_LNTC_HSTX_ZEROCLK BIT(6)
#define SW_LNT0_LPTX_PRE_OE BIT(7)
#define SW_LNT0_LPTX_OE BIT(8)
#define SW_LNT0_LPTX_P BIT(9)
#define SW_LNT0_LPTX_N BIT(10)
#define SW_LNT0_HSTX_PRE_OE BIT(11)
#define SW_LNT0_HSTX_OE BIT(12)
#define SW_LNT0_LPRX_EN BIT(13)
#define SW_LNT1_LPTX_PRE_OE BIT(14)
#define SW_LNT1_LPTX_OE BIT(15)
#define SW_LNT1_LPTX_P BIT(16)
#define SW_LNT1_LPTX_N BIT(17)
#define SW_LNT1_HSTX_PRE_OE BIT(18)
#define SW_LNT1_HSTX_OE BIT(19)
#define SW_LNT2_LPTX_PRE_OE BIT(20)
#define SW_LNT2_LPTX_OE BIT(21)
#define SW_LNT2_LPTX_P BIT(22)
#define SW_LNT2_LPTX_N BIT(23)
#define SW_LNT2_HSTX_PRE_OE BIT(24)
#define SW_LNT2_HSTX_OE BIT(25)
static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
{
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
u8 txdiv, txdiv0, txdiv1;
u64 pcw;
dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate);
if (mipi_tx->data_rate >= 500000000) {
txdiv = 1;
txdiv0 = 0;
txdiv1 = 0;
} else if (mipi_tx->data_rate >= 250000000) {
txdiv = 2;
txdiv0 = 1;
txdiv1 = 0;
} else if (mipi_tx->data_rate >= 125000000) {
txdiv = 4;
txdiv0 = 2;
txdiv1 = 0;
} else if (mipi_tx->data_rate > 62000000) {
txdiv = 8;
txdiv0 = 2;
txdiv1 = 1;
} else if (mipi_tx->data_rate >= 50000000) {
txdiv = 16;
txdiv0 = 2;
txdiv1 = 2;
} else {
return -EINVAL;
}
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON,
RG_DSI_VOUT_MSK |
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN,
(4 << 20) | (4 << 17) | (4 << 14) |
(4 << 11) | (4 << 8) | (4 << 5) |
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN);
usleep_range(30, 100);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
(8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_CON,
RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
RG_DSI_MPPLL_SDM_PWR_ON |
RG_DSI_MPPLL_SDM_ISO_EN,
RG_DSI_MPPLL_SDM_PWR_ON);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_PLL_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 |
RG_DSI_MPPLL_PREDIV,
(txdiv0 << 3) | (txdiv1 << 5));
/*
* PLL PCW config
* PCW bit 24~30 = integer part of pcw
* PCW bit 0~23 = fractional part of pcw
* pcw = data_Rate*4*txdiv/(Ref_clk*2);
* Post DIV =4, so need data_Rate*4
* Ref_clk is 26MHz
*/
pcw = div_u64(((u64)mipi_tx->data_rate * 2 * txdiv) << 24,
26000000);
writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
RG_DSI_MPPLL_SDM_FRA_EN);
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN);
usleep_range(20, 100);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
RG_DSI_MPPLL_SDM_SSC_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
RG_DSI_MPPLL_PRESERVE,
mipi_tx->driver_data->mppll_preserve);
return 0;
}
static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
{
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
dev_dbg(mipi_tx->dev, "unprepare\n");
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_PLL_EN);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
RG_DSI_MPPLL_PRESERVE, 0);
mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
RG_DSI_MPPLL_SDM_ISO_EN |
RG_DSI_MPPLL_SDM_PWR_ON,
RG_DSI_MPPLL_SDM_ISO_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_LNT_HS_BIAS_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_CON,
RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_BG_CON,
RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
RG_DSI_MPPLL_DIV_MSK);
}
static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
return clamp_val(rate, 50000000, 1250000000);
}
static const struct clk_ops mtk_mipi_tx_pll_ops = {
.prepare = mtk_mipi_tx_pll_prepare,
.unprepare = mtk_mipi_tx_pll_unprepare,
.round_rate = mtk_mipi_tx_pll_round_rate,
.set_rate = mtk_mipi_tx_pll_set_rate,
.recalc_rate = mtk_mipi_tx_pll_recalc_rate,
};
static void mtk_mipi_tx_power_on_signal(struct phy *phy)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
u32 reg;
for (reg = MIPITX_DSI_CLOCK_LANE;
reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
mtk_mipi_tx_set_bits(mipi_tx, reg, RG_DSI_LNTx_LDOOUT_EN);
mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_PAD_TIE_LOW_EN);
}
static void mtk_mipi_tx_power_off_signal(struct phy *phy)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
u32 reg;
mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_TOP_CON,
RG_DSI_PAD_TIE_LOW_EN);
for (reg = MIPITX_DSI_CLOCK_LANE;
reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
mtk_mipi_tx_clear_bits(mipi_tx, reg, RG_DSI_LNTx_LDOOUT_EN);
}
const struct mtk_mipitx_data mt2701_mipitx_data = {
.mppll_preserve = (3 << 8),
.mipi_tx_clk_ops = &mtk_mipi_tx_pll_ops,
.mipi_tx_enable_signal = mtk_mipi_tx_power_on_signal,
.mipi_tx_disable_signal = mtk_mipi_tx_power_off_signal,
};
const struct mtk_mipitx_data mt8173_mipitx_data = {
.mppll_preserve = (0 << 8),
.mipi_tx_clk_ops = &mtk_mipi_tx_pll_ops,
.mipi_tx_enable_signal = mtk_mipi_tx_power_on_signal,
.mipi_tx_disable_signal = mtk_mipi_tx_power_off_signal,
};