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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Michael, Thank you for the patch. On Mon, Nov 09, 2020 at 02:48:17PM +0100, Michael Tretter wrote: > Switch the "logicoreip" registers to the new xlnx,vcu-settings binding > to be able to read the settings if the settings are specified in a > separate device tree node that is shared with other drivers. > > If the driver is not able to find a node with the new binding, fall back > to check for the logicore register bank to be backwards compatible. > > Signed-off-by: Michael Tretter > --- > drivers/soc/xilinx/Kconfig | 1 + > drivers/soc/xilinx/xlnx_vcu.c | 94 ++++++++++++++--------------- > include/linux/mfd/syscon/xlnx-vcu.h | 38 ++++++++++++ > 3 files changed, 86 insertions(+), 47 deletions(-) > create mode 100644 include/linux/mfd/syscon/xlnx-vcu.h > > diff --git a/drivers/soc/xilinx/Kconfig b/drivers/soc/xilinx/Kconfig > index 646512d7276f..0b1708dae361 100644 > --- a/drivers/soc/xilinx/Kconfig > +++ b/drivers/soc/xilinx/Kconfig > @@ -4,6 +4,7 @@ menu "Xilinx SoC drivers" > config XILINX_VCU > tristate "Xilinx VCU logicoreIP Init" > depends on HAS_IOMEM > + select REGMAP_MMIO This should be 'depends on'? Please check: https://www.spinics.net/lists/kernel/msg3607924.html The rest look fine to me. After confirming above, for 1/4, 3/4, and 4/4, please feel free to add, Reviewed-by: Hyun Kwon Thanks! -hyun > help > Provides the driver to enable and disable the isolation between the > processing system and programmable logic part by using the logicoreIP > diff --git a/drivers/soc/xilinx/xlnx_vcu.c b/drivers/soc/xilinx/xlnx_vcu.c > index dcd8e7824b06..14daad4efc58 100644 > --- a/drivers/soc/xilinx/xlnx_vcu.c > +++ b/drivers/soc/xilinx/xlnx_vcu.c > @@ -10,39 +10,12 @@ > #include > #include > #include > +#include > +#include > #include > #include > #include > - > -/* Address map for different registers implemented in the VCU LogiCORE IP. */ > -#define VCU_ECODER_ENABLE 0x00 > -#define VCU_DECODER_ENABLE 0x04 > -#define VCU_MEMORY_DEPTH 0x08 > -#define VCU_ENC_COLOR_DEPTH 0x0c > -#define VCU_ENC_VERTICAL_RANGE 0x10 > -#define VCU_ENC_FRAME_SIZE_X 0x14 > -#define VCU_ENC_FRAME_SIZE_Y 0x18 > -#define VCU_ENC_COLOR_FORMAT 0x1c > -#define VCU_ENC_FPS 0x20 > -#define VCU_MCU_CLK 0x24 > -#define VCU_CORE_CLK 0x28 > -#define VCU_PLL_BYPASS 0x2c > -#define VCU_ENC_CLK 0x30 > -#define VCU_PLL_CLK 0x34 > -#define VCU_ENC_VIDEO_STANDARD 0x38 > -#define VCU_STATUS 0x3c > -#define VCU_AXI_ENC_CLK 0x40 > -#define VCU_AXI_DEC_CLK 0x44 > -#define VCU_AXI_MCU_CLK 0x48 > -#define VCU_DEC_VIDEO_STANDARD 0x4c > -#define VCU_DEC_FRAME_SIZE_X 0x50 > -#define VCU_DEC_FRAME_SIZE_Y 0x54 > -#define VCU_DEC_FPS 0x58 > -#define VCU_BUFFER_B_FRAME 0x5c > -#define VCU_WPP_EN 0x60 > -#define VCU_PLL_CLK_DEC 0x64 > -#define VCU_GASKET_INIT 0x74 > -#define VCU_GASKET_VALUE 0x03 > +#include > > /* vcu slcr registers, bitmask and shift */ > #define VCU_PLL_CTRL 0x24 > @@ -106,11 +79,20 @@ struct xvcu_device { > struct device *dev; > struct clk *pll_ref; > struct clk *aclk; > - void __iomem *logicore_reg_ba; > + struct regmap *logicore_reg_ba; > void __iomem *vcu_slcr_ba; > u32 coreclk; > }; > > +static struct regmap_config vcu_settings_regmap_config = { > + .name = "regmap", > + .reg_bits = 32, > + .val_bits = 32, > + .reg_stride = 4, > + .max_register = 0xfff, > + .cache_type = REGCACHE_NONE, > +}; > + > /** > * struct xvcu_pll_cfg - Helper data > * @fbdiv: The integer portion of the feedback divider to the PLL > @@ -300,10 +282,12 @@ static int xvcu_set_vcu_pll_info(struct xvcu_device *xvcu) > int ret, i; > const struct xvcu_pll_cfg *found = NULL; > > - inte = xvcu_read(xvcu->logicore_reg_ba, VCU_PLL_CLK); > - deci = xvcu_read(xvcu->logicore_reg_ba, VCU_PLL_CLK_DEC); > - coreclk = xvcu_read(xvcu->logicore_reg_ba, VCU_CORE_CLK) * MHZ; > - mcuclk = xvcu_read(xvcu->logicore_reg_ba, VCU_MCU_CLK) * MHZ; > + regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK, &inte); > + regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK_DEC, &deci); > + regmap_read(xvcu->logicore_reg_ba, VCU_CORE_CLK, &coreclk); > + coreclk *= MHZ; > + regmap_read(xvcu->logicore_reg_ba, VCU_MCU_CLK, &mcuclk); > + mcuclk *= MHZ; > if (!mcuclk || !coreclk) { > dev_err(xvcu->dev, "Invalid mcu and core clock data\n"); > return -EINVAL; > @@ -498,6 +482,7 @@ static int xvcu_probe(struct platform_device *pdev) > { > struct resource *res; > struct xvcu_device *xvcu; > + void __iomem *regs; > int ret; > > xvcu = devm_kzalloc(&pdev->dev, sizeof(*xvcu), GFP_KERNEL); > @@ -518,17 +503,32 @@ static int xvcu_probe(struct platform_device *pdev) > return -ENOMEM; > } > > - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "logicore"); > - if (!res) { > - dev_err(&pdev->dev, "get logicore memory resource failed.\n"); > - return -ENODEV; > - } > + xvcu->logicore_reg_ba = > + syscon_regmap_lookup_by_compatible("xlnx,vcu-settings"); > + if (IS_ERR(xvcu->logicore_reg_ba)) { > + dev_info(&pdev->dev, > + "could not find xlnx,vcu-settings: trying direct register access\n"); > + > + res = platform_get_resource_byname(pdev, > + IORESOURCE_MEM, "logicore"); > + if (!res) { > + dev_err(&pdev->dev, "get logicore memory resource failed.\n"); > + return -ENODEV; > + } > > - xvcu->logicore_reg_ba = devm_ioremap(&pdev->dev, res->start, > - resource_size(res)); > - if (!xvcu->logicore_reg_ba) { > - dev_err(&pdev->dev, "logicore register mapping failed.\n"); > - return -ENOMEM; > + regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); > + if (!regs) { > + dev_err(&pdev->dev, "logicore register mapping failed.\n"); > + return -ENOMEM; > + } > + > + xvcu->logicore_reg_ba = > + devm_regmap_init_mmio(&pdev->dev, regs, > + &vcu_settings_regmap_config); > + if (IS_ERR(xvcu->logicore_reg_ba)) { > + dev_err(&pdev->dev, "failed to init regmap\n"); > + return PTR_ERR(xvcu->logicore_reg_ba); > + } > } > > xvcu->aclk = devm_clk_get(&pdev->dev, "aclk"); > @@ -560,7 +560,7 @@ static int xvcu_probe(struct platform_device *pdev) > * Bit 0 : Gasket isolation > * Bit 1 : put VCU out of reset > */ > - xvcu_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, VCU_GASKET_VALUE); > + regmap_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, VCU_GASKET_VALUE); > > /* Do the PLL Settings based on the ref clk,core and mcu clk freq */ > ret = xvcu_set_pll(xvcu); > @@ -597,7 +597,7 @@ static int xvcu_remove(struct platform_device *pdev) > return -ENODEV; > > /* Add the the Gasket isolation and put the VCU in reset. */ > - xvcu_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, 0); > + regmap_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, 0); > > clk_disable_unprepare(xvcu->pll_ref); > clk_disable_unprepare(xvcu->aclk); > diff --git a/include/linux/mfd/syscon/xlnx-vcu.h b/include/linux/mfd/syscon/xlnx-vcu.h > new file mode 100644 > index 000000000000..d3edec4b7b1d > --- /dev/null > +++ b/include/linux/mfd/syscon/xlnx-vcu.h > @@ -0,0 +1,38 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2020 Pengutronix, Michael Tretter > + */ > + > +#ifndef __XLNX_VCU_H > +#define __XLNX_VCU_H > + > +#define VCU_ECODER_ENABLE 0x00 > +#define VCU_DECODER_ENABLE 0x04 > +#define VCU_MEMORY_DEPTH 0x08 > +#define VCU_ENC_COLOR_DEPTH 0x0c > +#define VCU_ENC_VERTICAL_RANGE 0x10 > +#define VCU_ENC_FRAME_SIZE_X 0x14 > +#define VCU_ENC_FRAME_SIZE_Y 0x18 > +#define VCU_ENC_COLOR_FORMAT 0x1c > +#define VCU_ENC_FPS 0x20 > +#define VCU_MCU_CLK 0x24 > +#define VCU_CORE_CLK 0x28 > +#define VCU_PLL_BYPASS 0x2c > +#define VCU_ENC_CLK 0x30 > +#define VCU_PLL_CLK 0x34 > +#define VCU_ENC_VIDEO_STANDARD 0x38 > +#define VCU_STATUS 0x3c > +#define VCU_AXI_ENC_CLK 0x40 > +#define VCU_AXI_DEC_CLK 0x44 > +#define VCU_AXI_MCU_CLK 0x48 > +#define VCU_DEC_VIDEO_STANDARD 0x4c > +#define VCU_DEC_FRAME_SIZE_X 0x50 > +#define VCU_DEC_FRAME_SIZE_Y 0x54 > +#define VCU_DEC_FPS 0x58 > +#define VCU_BUFFER_B_FRAME 0x5c > +#define VCU_WPP_EN 0x60 > +#define VCU_PLL_CLK_DEC 0x64 > +#define VCU_GASKET_INIT 0x74 > +#define VCU_GASKET_VALUE 0x03 > + > +#endif /* __XLNX_VCU_H */ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel