| Message ID | 20220103145324.48008-1-angelogioacchino.delregno@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] phy: mediatek: phy-mtk-mipi-dsi: Switch to regmap for mmio access | expand |
On Mon, 2022-01-03 at 15:53 +0100, AngeloGioacchino Del Regno wrote: > Switch to using the generic regmap API instead of calls to > readl/writel > for MMIO register access, removing custom crafted > update/set/clear_bits > functions and also allowing us to reduce code size. It seems make the driver more complex and may consume more cpu time. we prefer to use readl/writel here. > > Signed-off-by: AngeloGioacchino Del Regno < > angelogioacchino.delregno@collabora.com> > --- > .../phy/mediatek/phy-mtk-mipi-dsi-mt8173.c | 45 ++++++------- > .../phy/mediatek/phy-mtk-mipi-dsi-mt8183.c | 63 ++++++++++------- > -- > drivers/phy/mediatek/phy-mtk-mipi-dsi.c | 43 +++++-------- > drivers/phy/mediatek/phy-mtk-mipi-dsi.h | 6 +- > 4 files changed, 72 insertions(+), 85 deletions(-) > > diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c > b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c > index 7a847954594f..95a0d9a3cca7 100644 > --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c > +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c > @@ -4,6 +4,7 @@ > * Author: jitao.shi <jitao.shi@mediatek.com> > */ > > +#include <linux/regmap.h> > #include "phy-mtk-mipi-dsi.h" > > #define MIPITX_DSI_CON 0x00 > @@ -145,7 +146,7 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw > *hw) > return -EINVAL; > } > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON, > + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_BG_CON, > RG_DSI_VOUT_MSK | > RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN, > (4 << 20) | (4 << 17) | (4 << 14) | > @@ -154,22 +155,22 @@ static int mtk_mipi_tx_pll_prepare(struct > clk_hw *hw) > > usleep_range(30, 100); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON, > + regmap_update_bits(mipi_tx->regmap, 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, > + regmap_set_bits(mipi_tx->regmap, MIPITX_DSI_CON, > RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR, > + regmap_update_bits(mipi_tx->regmap, 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, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, > RG_DSI_MPPLL_PLL_EN); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0, > + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, > RG_DSI_MPPLL_TXDIV0 | > RG_DSI_MPPLL_TXDIV1 | > RG_DSI_MPPLL_PREDIV, > (txdiv0 << 3) | (txdiv1 << 5)); > @@ -184,19 +185,19 @@ static int mtk_mipi_tx_pll_prepare(struct > clk_hw *hw) > */ > pcw = div_u64(((u64)mipi_tx->data_rate * 2 * txdiv) << 24, > 26000000); > - writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2); > + regmap_write(mipi_tx->regmap, MIPITX_DSI_PLL_CON2, pcw); > > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1, > + regmap_set_bits(mipi_tx->regmap, 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); > + regmap_set_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, > RG_DSI_MPPLL_PLL_EN); > > usleep_range(20, 100); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON1, > RG_DSI_MPPLL_SDM_SSC_EN); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP, > + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_TOP, > RG_DSI_MPPLL_PRESERVE, > mipi_tx->driver_data->mppll_preserve); > > @@ -209,27 +210,27 @@ static void mtk_mipi_tx_pll_unprepare(struct > clk_hw *hw) > > dev_dbg(mipi_tx->dev, "unprepare\n"); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, > RG_DSI_MPPLL_PLL_EN); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP, > + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_TOP, > RG_DSI_MPPLL_PRESERVE, 0); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR, > + regmap_update_bits(mipi_tx->regmap, 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, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_TOP_CON, > RG_DSI_LNT_HS_BIAS_EN); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_CON, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_CON, > RG_DSI_CKG_LDOOUT_EN | > RG_DSI_LDOCORE_EN); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_BG_CON, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_BG_CON, > RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, > RG_DSI_MPPLL_DIV_MSK); > } > > @@ -254,9 +255,9 @@ static void mtk_mipi_tx_power_on_signal(struct > phy *phy) > > 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); > + regmap_set_bits(mipi_tx->regmap, reg, > RG_DSI_LNTx_LDOOUT_EN); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON, > + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_TOP_CON, > RG_DSI_PAD_TIE_LOW_EN); > } > > @@ -265,12 +266,12 @@ 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, > + regmap_set_bits(mipi_tx->regmap, 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); > + regmap_clear_bits(mipi_tx->regmap, reg, > RG_DSI_LNTx_LDOOUT_EN); > } > > const struct mtk_mipitx_data mt2701_mipitx_data = { > diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c > b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c > index 99108426d57c..01b59527669e 100644 > --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c > +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c > @@ -4,6 +4,7 @@ > * Author: jitao.shi <jitao.shi@mediatek.com> > */ > > +#include <linux/regmap.h> > #include "phy-mtk-mipi-dsi.h" > > #define MIPITX_LANE_CON 0x000c > @@ -70,17 +71,17 @@ static int mtk_mipi_tx_pll_enable(struct clk_hw > *hw) > return -EINVAL; > } > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON4, > RG_DSI_PLL_IBIAS); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_CON4, > RG_DSI_PLL_IBIAS); > > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_PWR, > AD_DSI_PLL_SDM_PWR_ON); > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON1, > RG_DSI_PLL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_PWR, > AD_DSI_PLL_SDM_PWR_ON); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_CON1, > RG_DSI_PLL_EN); > udelay(1); > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_PWR, > AD_DSI_PLL_SDM_ISO_EN); > + regmap_clear_bits(mipi_tx->regmap, 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, > + regmap_write(mipi_tx->regmap, MIPITX_PLL_CON0, pcw); > + regmap_update_bits(mipi_tx->regmap, MIPITX_PLL_CON1, > RG_DSI_PLL_POSDIV, > txdiv0 << 8); > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_CON1, > RG_DSI_PLL_EN); > > return 0; > } > @@ -89,10 +90,10 @@ static void mtk_mipi_tx_pll_disable(struct clk_hw > *hw) > { > struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw); > > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON1, > RG_DSI_PLL_EN); > + regmap_clear_bits(mipi_tx->regmap, 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); > + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_PWR, > AD_DSI_PLL_SDM_ISO_EN); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_PWR, > AD_DSI_PLL_SDM_PWR_ON); > } > > static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned > long rate, > @@ -121,7 +122,7 @@ static void > mtk_mipi_tx_config_calibration_data(struct mtk_mipi_tx *mipi_tx) > mipi_tx->rt_code[i] |= 0x10 << 5; > > for (j = 0; j < 10; j++) > - mtk_mipi_tx_update_bits(mipi_tx, > + regmap_update_bits(mipi_tx->regmap, > MIPITX_D2P_RTCODE * (i + 1) + j * 4, > 1, mipi_tx->rt_code[i] >> j & 1); > } > @@ -132,26 +133,26 @@ 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); > + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, > + (RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN)); > usleep_range(30, 100); > - writel(RG_DSI_BG_CORE_EN | RG_DSI_BG_LPF_EN, > - mipi_tx->regs + MIPITX_LANE_CON); > + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, > + (RG_DSI_BG_LPF_EN | RG_DSI_BG_CORE_EN)); > > /* 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); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_D0_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_D1_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_D2_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_D3_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_clear_bits(mipi_tx->regmap, MIPITX_CK_SW_CTL_EN, > DSI_SW_CTL_EN); > > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_VOLTAGE_SEL, > + regmap_update_bits(mipi_tx->regmap, MIPITX_VOLTAGE_SEL, > RG_DSI_HSTX_LDO_REF_SEL, > (mipi_tx->mipitx_drive - 3000) / 200 << > 6); > > mtk_mipi_tx_config_calibration_data(mipi_tx); > > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, > DSI_CK_CKMODE_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_CK_CKMODE_EN, > DSI_CK_CKMODE_EN); > } > > static void mtk_mipi_tx_power_off_signal(struct phy *phy) > @@ -159,15 +160,15 @@ 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); > + regmap_set_bits(mipi_tx->regmap, MIPITX_D0_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_D1_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_D2_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_D3_SW_CTL_EN, > DSI_SW_CTL_EN); > + regmap_set_bits(mipi_tx->regmap, MIPITX_CK_SW_CTL_EN, > DSI_SW_CTL_EN); > + > + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, > + (RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN)); > + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, > RG_DSI_PAD_TIEL_SEL); > } > > const struct mtk_mipitx_data mt8183_mipitx_data = { > diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c > b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c > index 28ad9403c441..51b1b1d4ad38 100644 > --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c > +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c > @@ -3,6 +3,7 @@ > * Copyright (c) 2015 MediaTek Inc. > */ > > +#include <linux/regmap.h> > #include "phy-mtk-mipi-dsi.h" > > inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw > *hw) > @@ -10,30 +11,6 @@ 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); > } > > -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); > -} > - > -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); > -} > - > -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); > -} > - > int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate, > unsigned long parent_rate) > { > @@ -126,6 +103,13 @@ static void > mtk_mipi_tx_get_calibration_datal(struct mtk_mipi_tx *mipi_tx) > kfree(buf); > } > > +static const struct regmap_config mtk_mipi_tx_regmap_config = { > + .reg_bits = 32, > + .reg_stride = 4, > + .val_bits = 32, > + .disable_locking = true, > +}; > + > static int mtk_mipi_tx_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > @@ -139,6 +123,7 @@ static int mtk_mipi_tx_probe(struct > platform_device *pdev) > }; > struct phy *phy; > struct phy_provider *phy_provider; > + void __iomem *regs; > int ret; > > mipi_tx = devm_kzalloc(dev, sizeof(*mipi_tx), GFP_KERNEL); > @@ -147,9 +132,13 @@ static int mtk_mipi_tx_probe(struct > platform_device *pdev) > > mipi_tx->driver_data = of_device_get_match_data(dev); > > - mipi_tx->regs = devm_platform_ioremap_resource(pdev, 0); > - if (IS_ERR(mipi_tx->regs)) > - return PTR_ERR(mipi_tx->regs); > + regs = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(regs)) > + return PTR_ERR(regs); > + > + mipi_tx->regmap = devm_regmap_init_mmio(dev, regs, > &mtk_mipi_tx_regmap_config); > + if (IS_ERR(mipi_tx->regmap)) > + return PTR_ERR(mipi_tx->regmap); > > ref_clk = devm_clk_get(dev, NULL); > if (IS_ERR(ref_clk)) { > diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h > b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h > index c76f07c3fdeb..8d32e9027a15 100644 > --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h > +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h > @@ -27,7 +27,7 @@ struct mtk_mipitx_data { > > struct mtk_mipi_tx { > struct device *dev; > - void __iomem *regs; > + struct regmap *regmap; > u32 data_rate; > u32 mipitx_drive; > u32 rt_code[5]; > @@ -37,10 +37,6 @@ struct mtk_mipi_tx { > }; > > 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,
diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c index 7a847954594f..95a0d9a3cca7 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c @@ -4,6 +4,7 @@ * Author: jitao.shi <jitao.shi@mediatek.com> */ +#include <linux/regmap.h> #include "phy-mtk-mipi-dsi.h" #define MIPITX_DSI_CON 0x00 @@ -145,7 +146,7 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) return -EINVAL; } - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON, + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_BG_CON, RG_DSI_VOUT_MSK | RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN, (4 << 20) | (4 << 17) | (4 << 14) | @@ -154,22 +155,22 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) usleep_range(30, 100); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON, + regmap_update_bits(mipi_tx->regmap, 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, + regmap_set_bits(mipi_tx->regmap, MIPITX_DSI_CON, RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR, + regmap_update_bits(mipi_tx->regmap, 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, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0, + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 | RG_DSI_MPPLL_PREDIV, (txdiv0 << 3) | (txdiv1 << 5)); @@ -184,19 +185,19 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) */ pcw = div_u64(((u64)mipi_tx->data_rate * 2 * txdiv) << 24, 26000000); - writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2); + regmap_write(mipi_tx->regmap, MIPITX_DSI_PLL_CON2, pcw); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1, + regmap_set_bits(mipi_tx->regmap, 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); + regmap_set_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN); usleep_range(20, 100); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON1, RG_DSI_MPPLL_SDM_SSC_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP, + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_TOP, RG_DSI_MPPLL_PRESERVE, mipi_tx->driver_data->mppll_preserve); @@ -209,27 +210,27 @@ static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw) dev_dbg(mipi_tx->dev, "unprepare\n"); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP, + regmap_update_bits(mipi_tx->regmap, MIPITX_DSI_PLL_TOP, RG_DSI_MPPLL_PRESERVE, 0); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR, + regmap_update_bits(mipi_tx->regmap, 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, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_TOP_CON, RG_DSI_LNT_HS_BIAS_EN); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_CON, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_CON, RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_BG_CON, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_BG_CON, RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_DIV_MSK); } @@ -254,9 +255,9 @@ static void mtk_mipi_tx_power_on_signal(struct phy *phy) 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); + regmap_set_bits(mipi_tx->regmap, reg, RG_DSI_LNTx_LDOOUT_EN); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_TOP_CON, + regmap_clear_bits(mipi_tx->regmap, MIPITX_DSI_TOP_CON, RG_DSI_PAD_TIE_LOW_EN); } @@ -265,12 +266,12 @@ 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, + regmap_set_bits(mipi_tx->regmap, 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); + regmap_clear_bits(mipi_tx->regmap, reg, RG_DSI_LNTx_LDOOUT_EN); } const struct mtk_mipitx_data mt2701_mipitx_data = { diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c index 99108426d57c..01b59527669e 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c @@ -4,6 +4,7 @@ * Author: jitao.shi <jitao.shi@mediatek.com> */ +#include <linux/regmap.h> #include "phy-mtk-mipi-dsi.h" #define MIPITX_LANE_CON 0x000c @@ -70,17 +71,17 @@ static int mtk_mipi_tx_pll_enable(struct clk_hw *hw) return -EINVAL; } - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON4, RG_DSI_PLL_IBIAS); + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_CON4, RG_DSI_PLL_IBIAS); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_PWR_ON); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_PWR_ON); + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_CON1, RG_DSI_PLL_EN); udelay(1); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_ISO_EN); + regmap_clear_bits(mipi_tx->regmap, 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, + regmap_write(mipi_tx->regmap, MIPITX_PLL_CON0, pcw); + regmap_update_bits(mipi_tx->regmap, MIPITX_PLL_CON1, RG_DSI_PLL_POSDIV, txdiv0 << 8); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_CON1, RG_DSI_PLL_EN); return 0; } @@ -89,10 +90,10 @@ static void mtk_mipi_tx_pll_disable(struct clk_hw *hw) { struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw); - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_PLL_CON1, RG_DSI_PLL_EN); + regmap_clear_bits(mipi_tx->regmap, 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); + regmap_set_bits(mipi_tx->regmap, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_ISO_EN); + regmap_clear_bits(mipi_tx->regmap, MIPITX_PLL_PWR, AD_DSI_PLL_SDM_PWR_ON); } static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate, @@ -121,7 +122,7 @@ static void mtk_mipi_tx_config_calibration_data(struct mtk_mipi_tx *mipi_tx) mipi_tx->rt_code[i] |= 0x10 << 5; for (j = 0; j < 10; j++) - mtk_mipi_tx_update_bits(mipi_tx, + regmap_update_bits(mipi_tx->regmap, MIPITX_D2P_RTCODE * (i + 1) + j * 4, 1, mipi_tx->rt_code[i] >> j & 1); } @@ -132,26 +133,26 @@ 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); + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, + (RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN)); usleep_range(30, 100); - writel(RG_DSI_BG_CORE_EN | RG_DSI_BG_LPF_EN, - mipi_tx->regs + MIPITX_LANE_CON); + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, + (RG_DSI_BG_LPF_EN | RG_DSI_BG_CORE_EN)); /* 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); + regmap_clear_bits(mipi_tx->regmap, MIPITX_D0_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_clear_bits(mipi_tx->regmap, MIPITX_D1_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_clear_bits(mipi_tx->regmap, MIPITX_D2_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_clear_bits(mipi_tx->regmap, MIPITX_D3_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_clear_bits(mipi_tx->regmap, MIPITX_CK_SW_CTL_EN, DSI_SW_CTL_EN); - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_VOLTAGE_SEL, + regmap_update_bits(mipi_tx->regmap, MIPITX_VOLTAGE_SEL, RG_DSI_HSTX_LDO_REF_SEL, (mipi_tx->mipitx_drive - 3000) / 200 << 6); mtk_mipi_tx_config_calibration_data(mipi_tx); - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN); } static void mtk_mipi_tx_power_off_signal(struct phy *phy) @@ -159,15 +160,15 @@ 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); + regmap_set_bits(mipi_tx->regmap, MIPITX_D0_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_D1_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_D2_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_D3_SW_CTL_EN, DSI_SW_CTL_EN); + regmap_set_bits(mipi_tx->regmap, MIPITX_CK_SW_CTL_EN, DSI_SW_CTL_EN); + + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, + (RG_DSI_PAD_TIEL_SEL | RG_DSI_BG_CORE_EN)); + regmap_write(mipi_tx->regmap, MIPITX_LANE_CON, RG_DSI_PAD_TIEL_SEL); } const struct mtk_mipitx_data mt8183_mipitx_data = { diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c index 28ad9403c441..51b1b1d4ad38 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c @@ -3,6 +3,7 @@ * Copyright (c) 2015 MediaTek Inc. */ +#include <linux/regmap.h> #include "phy-mtk-mipi-dsi.h" inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw) @@ -10,30 +11,6 @@ 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); } -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); -} - -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); -} - -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); -} - int mtk_mipi_tx_pll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { @@ -126,6 +103,13 @@ static void mtk_mipi_tx_get_calibration_datal(struct mtk_mipi_tx *mipi_tx) kfree(buf); } +static const struct regmap_config mtk_mipi_tx_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .disable_locking = true, +}; + static int mtk_mipi_tx_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -139,6 +123,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) }; struct phy *phy; struct phy_provider *phy_provider; + void __iomem *regs; int ret; mipi_tx = devm_kzalloc(dev, sizeof(*mipi_tx), GFP_KERNEL); @@ -147,9 +132,13 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) mipi_tx->driver_data = of_device_get_match_data(dev); - mipi_tx->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(mipi_tx->regs)) - return PTR_ERR(mipi_tx->regs); + regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + mipi_tx->regmap = devm_regmap_init_mmio(dev, regs, &mtk_mipi_tx_regmap_config); + if (IS_ERR(mipi_tx->regmap)) + return PTR_ERR(mipi_tx->regmap); ref_clk = devm_clk_get(dev, NULL); if (IS_ERR(ref_clk)) { diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h index c76f07c3fdeb..8d32e9027a15 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h @@ -27,7 +27,7 @@ struct mtk_mipitx_data { struct mtk_mipi_tx { struct device *dev; - void __iomem *regs; + struct regmap *regmap; u32 data_rate; u32 mipitx_drive; u32 rt_code[5]; @@ -37,10 +37,6 @@ struct mtk_mipi_tx { }; 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,
Switch to using the generic regmap API instead of calls to readl/writel for MMIO register access, removing custom crafted update/set/clear_bits functions and also allowing us to reduce code size. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> --- .../phy/mediatek/phy-mtk-mipi-dsi-mt8173.c | 45 ++++++------- .../phy/mediatek/phy-mtk-mipi-dsi-mt8183.c | 63 ++++++++++--------- drivers/phy/mediatek/phy-mtk-mipi-dsi.c | 43 +++++-------- drivers/phy/mediatek/phy-mtk-mipi-dsi.h | 6 +- 4 files changed, 72 insertions(+), 85 deletions(-)