* [v2 2/3] drm/mediatek: separate mipi_tx to different file
2019-04-16 5:42 [v2 0/3] support mipitx on mt8183 Jitao Shi
2019-04-16 5:42 ` [v2 1/3] dt-bindings: display: mediatek: update dsi supported chips Jitao Shi
@ 2019-04-16 5:42 ` Jitao Shi
2019-04-16 5:42 ` [v2 3/3] drm/mediatek: add mipi_tx driver for mt8183 Jitao Shi
2 siblings, 0 replies; 8+ messages in thread
From: Jitao Shi @ 2019-04-16 5:42 UTC (permalink / raw)
To: Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
linux-pwm, David Airlie, Matthias Brugger
Cc: Jitao Shi, Thierry Reding, Ajay Kumar, Inki Dae, Rahul Sharma,
Sean Paul, Vincent Palatin, Andy Yan, Philipp Zabel,
Russell King, devicetree, linux-kernel, dri-devel,
linux-arm-kernel, linux-mediatek, srv_heupstream, Sascha Hauer,
yingjoe.chen, eddie.huang, cawa.cheng, bibby.hsieh, ck.hu,
stonea168
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>
---
drivers/gpu/drm/mediatek/Makefile | 1 +
drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 340 ++----------------
drivers/gpu/drm/mediatek/mtk_mipi_tx.h | 51 +++
drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c | 283 +++++++++++++++
4 files changed, 360 insertions(+), 315 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_mipi_tx.h
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 82ae49c64221..2c8de1f5a5ee 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -12,6 +12,7 @@ mediatek-drm-y := mtk_disp_color.o \
mtk_drm_plane.o \
mtk_dsi.o \
mtk_mipi_tx.o \
+ mtk_mt8173_mipi_tx.o \
mtk_dpi.o
obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
index 90e913108950..d832798598a6 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
@@ -11,292 +11,45 @@
* GNU General Public License for more details.
*/
-#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>
-
-#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)
-
-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;
-};
+#include "mtk_mipi_tx.h"
-static inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw)
+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);
}
-static void mtk_mipi_tx_clear_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
- u32 bits)
+void mtk_mipi_tx_clear_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
+ u32 bits)
{
u32 temp = readl(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,
- u32 bits)
+void mtk_mipi_tx_set_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
+ u32 bits)
{
u32 temp = readl(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,
- u32 mask, u32 data)
+void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
+ u32 mask, u32 data)
{
u32 temp = readl(mipi_tx->regs + offset);
writel((temp & ~mask) | (data & mask), mipi_tx->regs + offset);
}
-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)
+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)
+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);
@@ -307,37 +60,14 @@ static int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
-static unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
+unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
{
struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
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)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
@@ -349,30 +79,16 @@ static int mtk_mipi_tx_power_on(struct phy *phy)
return ret;
/* 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;
}
-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)
{
struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
/* 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 */
clk_disable_unprepare(mipi_tx->pll);
@@ -391,10 +107,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct mtk_mipi_tx *mipi_tx;
struct resource *mem;
- struct clk *ref_clk;
const char *ref_clk_name;
struct clk_init_data clk_init = {
- .ops = &mtk_mipi_tx_pll_ops,
.num_parents = 1,
.parent_names = (const char * const *)&ref_clk_name,
.flags = CLK_SET_RATE_GATE,
@@ -408,6 +122,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
return -ENOMEM;
mipi_tx->driver_data = of_device_get_match_data(dev);
+
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mipi_tx->regs = devm_ioremap_resource(dev, mem);
if (IS_ERR(mipi_tx->regs)) {
@@ -416,13 +131,14 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
return ret;
}
- ref_clk = devm_clk_get(dev, NULL);
- if (IS_ERR(ref_clk)) {
- ret = PTR_ERR(ref_clk);
+ mipi_tx->ref_clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(mipi_tx->ref_clk)) {
+ ret = PTR_ERR(mipi_tx->ref_clk);
dev_err(dev, "Failed to get reference clock: %d\n", ret);
return ret;
}
- ref_clk_name = __clk_get_name(ref_clk);
+
+ ref_clk_name = __clk_get_name(mipi_tx->ref_clk);
ret = of_property_read_string(dev->of_node, "clock-output-names",
&clk_init.name);
@@ -431,6 +147,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
return ret;
}
+ clk_init.ops = mipi_tx->driver_data->mipi_tx_clk_ops;
+
mipi_tx->pll_hw.init = &clk_init;
mipi_tx->pll = devm_clk_register(dev, &mipi_tx->pll_hw);
if (IS_ERR(mipi_tx->pll)) {
@@ -465,20 +183,12 @@ static int mtk_mipi_tx_remove(struct platform_device *pdev)
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[] = {
{ .compatible = "mediatek,mt2701-mipi-tx",
.data = &mt2701_mipitx_data },
{ .compatible = "mediatek,mt8173-mipi-tx",
.data = &mt8173_mipitx_data },
- {},
+ { },
};
struct platform_driver mtk_mipi_tx_driver = {
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h
new file mode 100644
index 000000000000..2d7f05b0d6a7
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h
@@ -0,0 +1,51 @@
+/* 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;
+ struct clk *ref_clk;
+ 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);
+long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate);
+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
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c
new file mode 100644
index 000000000000..943650cfed46
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8173_mipi_tx.c
@@ -0,0 +1,283 @@
+// 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 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,
+};
+
--
2.21.0
^ permalink raw reply related [flat|nested] 8+ messages in thread* [v2 3/3] drm/mediatek: add mipi_tx driver for mt8183
2019-04-16 5:42 [v2 0/3] support mipitx on mt8183 Jitao Shi
2019-04-16 5:42 ` [v2 1/3] dt-bindings: display: mediatek: update dsi supported chips Jitao Shi
2019-04-16 5:42 ` [v2 2/3] drm/mediatek: separate mipi_tx to different file Jitao Shi
@ 2019-04-16 5:42 ` Jitao Shi
2019-05-06 9:17 ` CK Hu
2 siblings, 1 reply; 8+ messages in thread
From: Jitao Shi @ 2019-04-16 5:42 UTC (permalink / raw)
To: Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
linux-pwm, David Airlie, Matthias Brugger
Cc: Jitao Shi, Thierry Reding, Ajay Kumar, Inki Dae, Rahul Sharma,
Sean Paul, Vincent Palatin, Andy Yan, Philipp Zabel,
Russell King, devicetree, linux-kernel, dri-devel,
linux-arm-kernel, linux-mediatek, srv_heupstream, Sascha Hauer,
yingjoe.chen, eddie.huang, cawa.cheng, bibby.hsieh, ck.hu,
stonea168
This patch add mt8183 mipi_tx driver.
And also support other chips that use the same binding and driver.
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
drivers/gpu/drm/mediatek/Makefile | 1 +
drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 2 +
drivers/gpu/drm/mediatek/mtk_mipi_tx.h | 1 +
drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c | 154 ++++++++++++++++++
4 files changed, 158 insertions(+)
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 2c8de1f5a5ee..8067a4be8311 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -13,6 +13,7 @@ mediatek-drm-y := mtk_disp_color.o \
mtk_dsi.o \
mtk_mipi_tx.o \
mtk_mt8173_mipi_tx.o \
+ mtk_mt8183_mipi_tx.o \
mtk_dpi.o
obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
index d832798598a6..6acef158ac2a 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
@@ -188,6 +188,8 @@ static const struct of_device_id mtk_mipi_tx_match[] = {
.data = &mt2701_mipitx_data },
{ .compatible = "mediatek,mt8173-mipi-tx",
.data = &mt8173_mipitx_data },
+ { .compatible = "mediatek,mt8183-mipi-tx",
+ .data = &mt8183_mipitx_data },
{ },
};
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h
index 2d7f05b0d6a7..af83023e81cf 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h
@@ -47,5 +47,6 @@ unsigned long mtk_mipi_tx_pll_recalc_rate(struct clk_hw *hw,
extern const struct mtk_mipitx_data mt2701_mipitx_data;
extern const struct mtk_mipitx_data mt8173_mipitx_data;
+extern const struct mtk_mipitx_data mt8183_mipitx_data;
#endif
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c
new file mode 100644
index 000000000000..a1399568b8d5
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c
@@ -0,0 +1,154 @@
+// 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_LANE_CON 0x000c
+#define RG_DSI_CPHY_T1DRV_EN BIT(0)
+#define RG_DSI_ANA_CK_SEL BIT(1)
+#define RG_DSI_PHY_CK_SEL BIT(2)
+#define RG_DSI_CPHY_EN BIT(3)
+#define RG_DSI_PHYCK_INV_EN BIT(4)
+#define RG_DSI_PWR04_EN BIT(5)
+#define RG_DSI_BG_LPF_EN BIT(6)
+#define RG_DSI_BG_CORE_EN BIT(7)
+#define RG_DSI_PAD_TIEL_SEL BIT(8)
+
+#define MIPITX_PLL_PWR 0x0028
+#define MIPITX_PLL_CON0 0x002c
+#define MIPITX_PLL_CON1 0x0030
+#define MIPITX_PLL_CON2 0x0034
+#define MIPITX_PLL_CON3 0x0038
+#define MIPITX_PLL_CON4 0x003c
+#define RG_DSI_PLL_IBIAS (3 << 10)
+
+#define MIPITX_D2_SW_CTL_EN 0x0144
+#define MIPITX_D0_SW_CTL_EN 0x0244
+#define MIPITX_CK_CKMODE_EN 0x0328
+#define DSI_CK_CKMODE_EN BIT(0)
+#define MIPITX_CK_SW_CTL_EN 0x0344
+#define MIPITX_D1_SW_CTL_EN 0x0444
+#define MIPITX_D3_SW_CTL_EN 0x0544
+#define DSI_SW_CTL_EN BIT(0)
+#define AD_DSI_PLL_SDM_PWR_ON BIT(0)
+#define AD_DSI_PLL_SDM_ISO_EN BIT(1)
+
+#define RG_DSI_PLL_EN BIT(4)
+#define RG_DSI_PLL_POSDIV (0x7 << 8)
+
+static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
+{
+ struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
+ unsigned int txdiv, txdiv0;
+ u64 pcw;
+ int ret;
+
+ dev_dbg(mipi_tx->dev, "prepare: %u bps\n", mipi_tx->data_rate);
+
+ if (mipi_tx->data_rate >= 2000000000) {
+ txdiv = 1;
+ txdiv0 = 0;
+ } else if (mipi_tx->data_rate >= 1000000000) {
+ txdiv = 2;
+ txdiv0 = 1;
+ } else if (mipi_tx->data_rate >= 500000000) {
+ txdiv = 4;
+ txdiv0 = 2;
+ } else if (mipi_tx->data_rate > 250000000) {
+ txdiv = 8;
+ txdiv0 = 3;
+ } else if (mipi_tx->data_rate >= 125000000) {
+ txdiv = 16;
+ txdiv0 = 4;
+ } else {
+ return -EINVAL;
+ }
+
+ ret = clk_prepare_enable(mipi_tx->ref_clk);
+ if (ret < 0) {
+ dev_err(mipi_tx->dev,
+ "can't prepare and enable mipi_tx ref_clk %d\n", ret);
+ return ret;
+ }
+
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON4, RG_DSI_PLL_IBIAS);
+
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_PWR_ON);
+ usleep_range(30, 100);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_ISO_EN);
+ pcw = div_u64(((u64)mipi_tx->data_rate * txdiv) << 24, 26000000);
+ writel(pcw, mipi_tx->regs + MIPITX_PLL_CON0);
+ mtk_mipi_tx_update_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_POSDIV,
+ txdiv0 << 8);
+ usleep_range(1000, 2000);
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_EN);
+
+ 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_PLL_CON1, RG_DSI_PLL_EN);
+
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_ISO_EN);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_PWR_ON);
+ clk_disable_unprepare(mipi_tx->ref_clk);
+}
+
+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);
+
+ /* BG_LPF_EN / BG_CORE_EN */
+ writel(RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN,
+ mipi_tx->regs + MIPITX_LANE_CON);
+ usleep_range(30, 100);
+ writel(RG_DSI_BG_CORE_EN | RG_DSI_BG_LPF_EN,
+ mipi_tx->regs + MIPITX_LANE_CON);
+
+ /* Switch OFF each Lane */
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_D0_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_D1_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_D2_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_D3_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_CK_SW_CTL_EN, DSI_SW_CTL_EN);
+
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN);
+}
+
+static void mtk_mipi_tx_power_off_signal(struct phy *phy)
+{
+ struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
+
+ /* Switch ON each Lane */
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_D0_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_D1_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_D2_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_D3_SW_CTL_EN, DSI_SW_CTL_EN);
+ mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_SW_CTL_EN, DSI_SW_CTL_EN);
+
+ writel(RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN,
+ mipi_tx->regs + MIPITX_LANE_CON);
+ writel(RG_DSI_PAD_TIEL_SEL, mipi_tx->regs + MIPITX_LANE_CON);
+}
+
+const struct mtk_mipitx_data mt8183_mipitx_data = {
+ .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,
+};
--
2.21.0
^ permalink raw reply related [flat|nested] 8+ messages in thread