mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 20:51:44 +00:00
MMC core:
- Convert to sysfs_emit() in favor of sprintf()
- Improve fallback to speed modes if eMMC HS200 fails
MMC host:
- dw_mmc: Allow variants to set minimal supported clock rate
- dw-mmc-rockchip: Fix problems with invalid clock rates
- litex_mmc: Add new DT based driver for the LiteX's LiteSDCard interface
- litex_mmc: Add Gabriel Somlo and Joel Stanley as co-maintainers for LiteX
- mtk-sd: Add support for the Mediatek MT8186 variant
- renesas_sdhi: Add support for RZ/G2UL variant
- renesas_sdhi: Add support for RZ/V2L variant
- rtsx_pci: Adjust power-on sequence to conform to the SD spec
- sdhci-am654: Add support for TI's AM62 variant
- sdhci_am654: Fixup support for TI's AM64 variant
- sdhci-esdhc-imx: Add support for the imx93 variant
- sdhci-msm: Add support for the msm8953 variant
- sdhci-pci-gli: Add support for runtime PM for the GL9763E variant
- sdhci-pci-gli: Adjustments of the SSC function for the GL975x variants
- sdhci-tegra: Add support for wake on SD card event
- sunxi-mmc: Add support for Allwinner's F1c100s variant
- sunxi-mmc: Add support for D1 MMC variant
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Merge tag 'mmc-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Convert to sysfs_emit() in favor of sprintf()
- Improve fallback to speed modes if eMMC HS200 fails
MMC host:
- dw_mmc: Allow variants to set minimal supported clock rate
- dw-mmc-rockchip: Fix problems with invalid clock rates
- litex_mmc: Add new DT based driver for the LiteX's LiteSDCard
interface
- litex_mmc: Add Gabriel Somlo and Joel Stanley as co-maintainers for
LiteX
- mtk-sd: Add support for the Mediatek MT8186 variant
- renesas_sdhi: Add support for RZ/G2UL variant
- renesas_sdhi: Add support for RZ/V2L variant
- rtsx_pci: Adjust power-on sequence to conform to the SD spec
- sdhci-am654: Add support for TI's AM62 variant
- sdhci_am654: Fixup support for TI's AM64 variant
- sdhci-esdhc-imx: Add support for the imx93 variant
- sdhci-msm: Add support for the msm8953 variant
- sdhci-pci-gli: Add support for runtime PM for the GL9763E variant
- sdhci-pci-gli: Adjustments of the SSC function for the GL975x
variants
- sdhci-tegra: Add support for wake on SD card event
- sunxi-mmc: Add support for Allwinner's F1c100s variant
- sunxi-mmc: Add support for D1 MMC variant"
* tag 'mmc-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (37 commits)
dt-bindings: mmc: renesas,sdhi: Document RZ/G2UL SoC
mmc: tmio: remove outdated members from host struct
mmc: mtk-sd: Silence delay phase calculation debug log
mmc: davinci_mmc: Handle error for clk_enable
mmc: sdhci-pci-gli: Add runtime PM for GL9763E
mmc: core: Drop HS400 caps unless 8-bit bus is supported too
mmc: host: Return an error when ->enable_sdio_irq() ops is missing
mmc: core: Improve fallback to speed modes if eMMC HS200 fails
dt-bindings: mmc: sunxi: add Allwinner F1c100s compatible
mmc: dw-mmc-rockchip: Fix handling invalid clock rates
mmc: dw_mmc: Support setting f_min from host drivers
mmc: host: Drop commas after SoC match table sentinels
mmc: rtsx: add 74 Clocks in power on flow
dt-bindings: mmc: renesas,sdhi: Document RZ/V2L SoC
mmc: sh_mmcif: Simplify division/shift logic
mmc: sdhci_am654: Add Support for TI's AM62 SoC
dt-bindings: mmc: imx-esdhc: Add imx93 compatible string
dt-bindings: mmc: sdhci-am654: Add compatible string for AM62 SoC
mmc: sdhci_am654: Fix the driver data of AM64 SoC
mmc: core: use sysfs_emit() instead of sprintf()
...
This commit is contained in:
Linus Torvalds
commit
5bebe2c9ae
@ -24,6 +24,7 @@ properties:
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- const: allwinner,sun7i-a20-mmc
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- const: allwinner,sun8i-a83t-emmc
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- const: allwinner,sun9i-a80-mmc
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- const: allwinner,sun20i-d1-mmc
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- const: allwinner,sun50i-a64-emmc
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- const: allwinner,sun50i-a64-mmc
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- const: allwinner,sun50i-a100-emmc
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@ -49,12 +50,18 @@ properties:
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- items:
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- const: allwinner,sun50i-h6-mmc
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- const: allwinner,sun50i-a64-mmc
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- items:
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- const: allwinner,sun20i-d1-emmc
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- const: allwinner,sun50i-a100-emmc
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- items:
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- const: allwinner,sun50i-h616-emmc
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- const: allwinner,sun50i-a100-emmc
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- items:
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- const: allwinner,sun50i-h616-mmc
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- const: allwinner,sun50i-a100-mmc
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- items:
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- const: allwinner,suniv-f1c100s-mmc
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- const: allwinner,sun7i-a20-mmc
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reg:
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maxItems: 1
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@ -47,6 +47,7 @@ properties:
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- const: fsl,imx7d-usdhc
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- items:
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- enum:
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- fsl,imx93-usdhc
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- fsl,imx8ulp-usdhc
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- const: fsl,imx8mm-usdhc
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78
Documentation/devicetree/bindings/mmc/litex,mmc.yaml
Normal file
78
Documentation/devicetree/bindings/mmc/litex,mmc.yaml
Normal file
@ -0,0 +1,78 @@
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# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: LiteX LiteSDCard device
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maintainers:
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- Gabriel Somlo <gsomlo@gmail.com>
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description: |
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LiteSDCard is a small footprint, configurable SDCard core for FPGA based
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system on chips.
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The hardware source is Open Source and can be found on at
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https://github.com/enjoy-digital/litesdcard/.
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allOf:
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- $ref: mmc-controller.yaml#
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properties:
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compatible:
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const: litex,mmc
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reg:
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items:
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- description: PHY registers
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- description: CORE registers
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- description: DMA Reader buffer
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- description: DMA Writer buffer
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- description: IRQ registers
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minItems: 4
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reg-names:
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items:
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- const: phy
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- const: core
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- const: reader
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- const: writer
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- const: irq
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minItems: 4
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clocks:
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maxItems: 1
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description:
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Handle to reference clock.
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vmmc-supply:
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description:
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Handle to fixed-voltage supply for the card power.
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interrupts:
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maxItems: 1
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required:
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- compatible
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- reg
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- reg-names
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- clocks
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- vmmc-supply
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additionalProperties: false
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examples:
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- |
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mmc: mmc@12005000 {
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compatible = "litex,mmc";
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reg = <0x12005000 0x100>,
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<0x12003800 0x100>,
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<0x12003000 0x100>,
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<0x12004800 0x100>,
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<0x12004000 0x100>;
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reg-names = "phy", "core", "reader", "writer", "irq";
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clocks = <&reference_clk>;
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vmmc-supply = <&vreg_mmc>;
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interrupts = <4>;
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};
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@ -29,6 +29,9 @@ properties:
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- items:
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- const: mediatek,mt7623-mmc
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- const: mediatek,mt2701-mmc
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- items:
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- const: mediatek,mt8186-mmc
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- const: mediatek,mt8183-mmc
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- items:
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- const: mediatek,mt8192-mmc
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- const: mediatek,mt8183-mmc
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@ -57,7 +57,9 @@ properties:
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- renesas,sdhi-r8a77990 # R-Car E3
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- renesas,sdhi-r8a77995 # R-Car D3
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- renesas,sdhi-r8a779a0 # R-Car V3U
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- renesas,sdhi-r9a07g043 # RZ/G2UL
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- renesas,sdhi-r9a07g044 # RZ/G2{L,LC}
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- renesas,sdhi-r9a07g054 # RZ/V2L
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- const: renesas,rcar-gen3-sdhi # R-Car Gen3 or RZ/G2
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reg:
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@ -107,7 +109,10 @@ allOf:
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properties:
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compatible:
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contains:
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const: renesas,sdhi-r9a07g044
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enum:
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- renesas,sdhi-r9a07g043
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- renesas,sdhi-r9a07g044
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- renesas,sdhi-r9a07g054
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then:
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properties:
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clocks:
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@ -21,6 +21,7 @@ properties:
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- const: ti,j721e-sdhci-4bit
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- const: ti,am64-sdhci-8bit
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- const: ti,am64-sdhci-4bit
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- const: ti,am62-sdhci
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- items:
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- const: ti,j7200-sdhci-8bit
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- const: ti,j721e-sdhci-8bit
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@ -14,6 +14,7 @@ Required properties:
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full compatible strings with SoC and version:
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"qcom,apq8084-sdhci", "qcom,sdhci-msm-v4"
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"qcom,msm8226-sdhci", "qcom,sdhci-msm-v4"
|
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"qcom,msm8953-sdhci", "qcom,sdhci-msm-v4"
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"qcom,msm8974-sdhci", "qcom,sdhci-msm-v4"
|
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"qcom,msm8916-sdhci", "qcom,sdhci-msm-v4"
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"qcom,msm8992-sdhci", "qcom,sdhci-msm-v4"
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|
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@ -11158,12 +11158,17 @@ F: lib/list-test.c
|
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LITEX PLATFORM
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M: Karol Gugala <kgugala@antmicro.com>
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M: Mateusz Holenko <mholenko@antmicro.com>
|
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M: Gabriel Somlo <gsomlo@gmail.com>
|
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M: Joel Stanley <joel@jms.id.au>
|
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S: Maintained
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F: Documentation/devicetree/bindings/*/litex,*.yaml
|
||||
F: arch/openrisc/boot/dts/or1klitex.dts
|
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F: drivers/soc/litex/litex_soc_ctrl.c
|
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F: drivers/tty/serial/liteuart.c
|
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F: include/linux/litex.h
|
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F: drivers/tty/serial/liteuart.c
|
||||
F: drivers/soc/litex/*
|
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F: drivers/net/ethernet/litex/*
|
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F: drivers/mmc/host/litex_mmc.c
|
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N: litex
|
||||
|
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LIVE PATCHING
|
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M: Josh Poimboeuf <jpoimboe@redhat.com>
|
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|
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@ -15,6 +15,7 @@
|
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#include <linux/stat.h>
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#include <linux/of.h>
|
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#include <linux/pm_runtime.h>
|
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#include <linux/sysfs.h>
|
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|
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#include <linux/mmc/card.h>
|
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#include <linux/mmc/host.h>
|
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@ -34,13 +35,13 @@ static ssize_t type_show(struct device *dev,
|
||||
|
||||
switch (card->type) {
|
||||
case MMC_TYPE_MMC:
|
||||
return sprintf(buf, "MMC\n");
|
||||
return sysfs_emit(buf, "MMC\n");
|
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case MMC_TYPE_SD:
|
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return sprintf(buf, "SD\n");
|
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return sysfs_emit(buf, "SD\n");
|
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case MMC_TYPE_SDIO:
|
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return sprintf(buf, "SDIO\n");
|
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return sysfs_emit(buf, "SDIO\n");
|
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case MMC_TYPE_SD_COMBO:
|
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return sprintf(buf, "SDcombo\n");
|
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return sysfs_emit(buf, "SDcombo\n");
|
||||
default:
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
@ -9,6 +9,7 @@
|
||||
#define _MMC_CORE_BUS_H
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
struct mmc_host;
|
||||
struct mmc_card;
|
||||
@ -17,7 +18,7 @@ struct mmc_card;
|
||||
static ssize_t mmc_##name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
|
||||
{ \
|
||||
struct mmc_card *card = mmc_dev_to_card(dev); \
|
||||
return sprintf(buf, fmt, args); \
|
||||
return sysfs_emit(buf, fmt, args); \
|
||||
} \
|
||||
static DEVICE_ATTR(name, S_IRUGO, mmc_##name##_show, NULL)
|
||||
|
||||
|
||||
@ -588,6 +588,25 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
|
||||
|
||||
EXPORT_SYMBOL(mmc_alloc_host);
|
||||
|
||||
static int mmc_validate_host_caps(struct mmc_host *host)
|
||||
{
|
||||
struct device *dev = host->parent;
|
||||
u32 caps = host->caps, caps2 = host->caps2;
|
||||
|
||||
if (caps & MMC_CAP_SDIO_IRQ && !host->ops->enable_sdio_irq) {
|
||||
dev_warn(dev, "missing ->enable_sdio_irq() ops\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (caps2 & (MMC_CAP2_HS400_ES | MMC_CAP2_HS400) &&
|
||||
!(caps & MMC_CAP_8_BIT_DATA)) {
|
||||
dev_warn(dev, "drop HS400 support since no 8-bit bus\n");
|
||||
host->caps2 = caps2 & ~MMC_CAP2_HS400_ES & ~MMC_CAP2_HS400;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* mmc_add_host - initialise host hardware
|
||||
* @host: mmc host
|
||||
@ -600,8 +619,9 @@ int mmc_add_host(struct mmc_host *host)
|
||||
{
|
||||
int err;
|
||||
|
||||
WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
|
||||
!host->ops->enable_sdio_irq);
|
||||
err = mmc_validate_host_caps(host);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = device_add(&host->class_dev);
|
||||
if (err)
|
||||
|
||||
@ -12,6 +12,7 @@
|
||||
#include <linux/slab.h>
|
||||
#include <linux/stat.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
#include <linux/mmc/host.h>
|
||||
#include <linux/mmc/card.h>
|
||||
@ -812,12 +813,11 @@ static ssize_t mmc_fwrev_show(struct device *dev,
|
||||
{
|
||||
struct mmc_card *card = mmc_dev_to_card(dev);
|
||||
|
||||
if (card->ext_csd.rev < 7) {
|
||||
return sprintf(buf, "0x%x\n", card->cid.fwrev);
|
||||
} else {
|
||||
return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN,
|
||||
card->ext_csd.fwrev);
|
||||
}
|
||||
if (card->ext_csd.rev < 7)
|
||||
return sysfs_emit(buf, "0x%x\n", card->cid.fwrev);
|
||||
else
|
||||
return sysfs_emit(buf, "0x%*phN\n", MMC_FIRMWARE_LEN,
|
||||
card->ext_csd.fwrev);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
|
||||
@ -830,10 +830,10 @@ static ssize_t mmc_dsr_show(struct device *dev,
|
||||
struct mmc_host *host = card->host;
|
||||
|
||||
if (card->csd.dsr_imp && host->dsr_req)
|
||||
return sprintf(buf, "0x%x\n", host->dsr);
|
||||
return sysfs_emit(buf, "0x%x\n", host->dsr);
|
||||
else
|
||||
/* return default DSR value */
|
||||
return sprintf(buf, "0x%x\n", 0x404);
|
||||
return sysfs_emit(buf, "0x%x\n", 0x404);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
|
||||
@ -1355,11 +1355,6 @@ static int mmc_select_hs400es(struct mmc_card *card)
|
||||
int err = -EINVAL;
|
||||
u8 val;
|
||||
|
||||
if (!(host->caps & MMC_CAP_8_BIT_DATA)) {
|
||||
err = -ENOTSUPP;
|
||||
goto out_err;
|
||||
}
|
||||
|
||||
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V)
|
||||
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
|
||||
|
||||
@ -1523,13 +1518,23 @@ static int mmc_select_timing(struct mmc_card *card)
|
||||
if (!mmc_can_ext_csd(card))
|
||||
goto bus_speed;
|
||||
|
||||
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES)
|
||||
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) {
|
||||
err = mmc_select_hs400es(card);
|
||||
else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) {
|
||||
err = mmc_select_hs200(card);
|
||||
else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS)
|
||||
if (err == -EBADMSG)
|
||||
card->mmc_avail_type &= ~EXT_CSD_CARD_TYPE_HS200;
|
||||
else
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS)
|
||||
err = mmc_select_hs(card);
|
||||
|
||||
out:
|
||||
if (err && err != -EBADMSG)
|
||||
return err;
|
||||
|
||||
|
||||
@ -13,6 +13,7 @@
|
||||
#include <linux/stat.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/scatterlist.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
#include <linux/mmc/host.h>
|
||||
#include <linux/mmc/card.h>
|
||||
@ -708,18 +709,16 @@ MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr);
|
||||
MMC_DEV_ATTR(rca, "0x%04x\n", card->rca);
|
||||
|
||||
|
||||
static ssize_t mmc_dsr_show(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
static ssize_t mmc_dsr_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct mmc_card *card = mmc_dev_to_card(dev);
|
||||
struct mmc_host *host = card->host;
|
||||
struct mmc_card *card = mmc_dev_to_card(dev);
|
||||
struct mmc_host *host = card->host;
|
||||
|
||||
if (card->csd.dsr_imp && host->dsr_req)
|
||||
return sprintf(buf, "0x%x\n", host->dsr);
|
||||
else
|
||||
/* return default DSR value */
|
||||
return sprintf(buf, "0x%x\n", 0x404);
|
||||
if (card->csd.dsr_imp && host->dsr_req)
|
||||
return sysfs_emit(buf, "0x%x\n", host->dsr);
|
||||
/* return default DSR value */
|
||||
return sysfs_emit(buf, "0x%x\n", 0x404);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
|
||||
@ -735,9 +734,9 @@ static ssize_t info##num##_show(struct device *dev, struct device_attribute *att
|
||||
\
|
||||
if (num > card->num_info) \
|
||||
return -ENODATA; \
|
||||
if (!card->info[num-1][0]) \
|
||||
if (!card->info[num - 1][0]) \
|
||||
return 0; \
|
||||
return sprintf(buf, "%s\n", card->info[num-1]); \
|
||||
return sysfs_emit(buf, "%s\n", card->info[num - 1]); \
|
||||
} \
|
||||
static DEVICE_ATTR_RO(info##num)
|
||||
|
||||
|
||||
@ -7,6 +7,7 @@
|
||||
|
||||
#include <linux/err.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
#include <linux/mmc/host.h>
|
||||
#include <linux/mmc/card.h>
|
||||
@ -40,9 +41,9 @@ static ssize_t info##num##_show(struct device *dev, struct device_attribute *att
|
||||
\
|
||||
if (num > card->num_info) \
|
||||
return -ENODATA; \
|
||||
if (!card->info[num-1][0]) \
|
||||
if (!card->info[num - 1][0]) \
|
||||
return 0; \
|
||||
return sprintf(buf, "%s\n", card->info[num-1]); \
|
||||
return sysfs_emit(buf, "%s\n", card->info[num - 1]); \
|
||||
} \
|
||||
static DEVICE_ATTR_RO(info##num)
|
||||
|
||||
|
||||
@ -14,6 +14,7 @@
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/pm_domain.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/sysfs.h>
|
||||
|
||||
#include <linux/mmc/card.h>
|
||||
#include <linux/mmc/host.h>
|
||||
@ -35,7 +36,7 @@ field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
|
||||
struct sdio_func *func; \
|
||||
\
|
||||
func = dev_to_sdio_func (dev); \
|
||||
return sprintf(buf, format_string, args); \
|
||||
return sysfs_emit(buf, format_string, args); \
|
||||
} \
|
||||
static DEVICE_ATTR_RO(field)
|
||||
|
||||
@ -52,9 +53,9 @@ static ssize_t info##num##_show(struct device *dev, struct device_attribute *att
|
||||
\
|
||||
if (num > func->num_info) \
|
||||
return -ENODATA; \
|
||||
if (!func->info[num-1][0]) \
|
||||
if (!func->info[num - 1][0]) \
|
||||
return 0; \
|
||||
return sprintf(buf, "%s\n", func->info[num-1]); \
|
||||
return sysfs_emit(buf, "%s\n", func->info[num - 1]); \
|
||||
} \
|
||||
static DEVICE_ATTR_RO(info##num)
|
||||
|
||||
|
||||
@ -1094,3 +1094,16 @@ config MMC_OWL
|
||||
|
||||
config MMC_SDHCI_EXTERNAL_DMA
|
||||
bool
|
||||
|
||||
config MMC_LITEX
|
||||
tristate "LiteX MMC Host Controller support"
|
||||
depends on ((PPC_MICROWATT || LITEX) && OF && HAVE_CLK) || COMPILE_TEST
|
||||
select REGULATOR
|
||||
select REGULATOR_FIXED_VOLTAGE
|
||||
help
|
||||
This selects support for the MMC Host Controller found in LiteX SoCs.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called litex_mmc.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
@ -101,6 +101,7 @@ obj-$(CONFIG_MMC_CQHCI) += cqhci.o
|
||||
cqhci-y += cqhci-core.o
|
||||
cqhci-$(CONFIG_MMC_CRYPTO) += cqhci-crypto.o
|
||||
obj-$(CONFIG_MMC_HSQ) += mmc_hsq.o
|
||||
obj-$(CONFIG_MMC_LITEX) += litex_mmc.o
|
||||
|
||||
ifeq ($(CONFIG_CB710_DEBUG),y)
|
||||
CFLAGS-cb710-mmc += -DDEBUG
|
||||
|
||||
@ -1189,7 +1189,6 @@ static int mmc_davinci_parse_pdata(struct mmc_host *mmc)
|
||||
|
||||
static int davinci_mmcsd_probe(struct platform_device *pdev)
|
||||
{
|
||||
const struct of_device_id *match;
|
||||
struct mmc_davinci_host *host = NULL;
|
||||
struct mmc_host *mmc = NULL;
|
||||
struct resource *r, *mem = NULL;
|
||||
@ -1235,9 +1234,8 @@ static int davinci_mmcsd_probe(struct platform_device *pdev)
|
||||
|
||||
host->mmc_input_clk = clk_get_rate(host->clk);
|
||||
|
||||
match = of_match_device(davinci_mmc_dt_ids, &pdev->dev);
|
||||
if (match) {
|
||||
pdev->id_entry = match->data;
|
||||
pdev->id_entry = of_device_get_match_data(&pdev->dev);
|
||||
if (pdev->id_entry) {
|
||||
ret = mmc_of_parse(mmc);
|
||||
if (ret) {
|
||||
dev_err_probe(&pdev->dev, ret,
|
||||
@ -1375,8 +1373,12 @@ static int davinci_mmcsd_suspend(struct device *dev)
|
||||
static int davinci_mmcsd_resume(struct device *dev)
|
||||
{
|
||||
struct mmc_davinci_host *host = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
ret = clk_enable(host->clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
clk_enable(host->clk);
|
||||
mmc_davinci_reset_ctrl(host, 0);
|
||||
|
||||
return 0;
|
||||
|
||||
@ -15,7 +15,9 @@
|
||||
#include "dw_mmc.h"
|
||||
#include "dw_mmc-pltfm.h"
|
||||
|
||||
#define RK3288_CLKGEN_DIV 2
|
||||
#define RK3288_CLKGEN_DIV 2
|
||||
|
||||
static const unsigned int freqs[] = { 100000, 200000, 300000, 400000 };
|
||||
|
||||
struct dw_mci_rockchip_priv_data {
|
||||
struct clk *drv_clk;
|
||||
@ -51,7 +53,7 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
|
||||
|
||||
ret = clk_set_rate(host->ciu_clk, cclkin);
|
||||
if (ret)
|
||||
dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock);
|
||||
dev_warn(host->dev, "failed to set rate %uHz err: %d\n", cclkin, ret);
|
||||
|
||||
bus_hz = clk_get_rate(host->ciu_clk) / RK3288_CLKGEN_DIV;
|
||||
if (bus_hz != host->bus_hz) {
|
||||
@ -290,13 +292,30 @@ static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
|
||||
|
||||
static int dw_mci_rockchip_init(struct dw_mci *host)
|
||||
{
|
||||
int ret, i;
|
||||
|
||||
/* It is slot 8 on Rockchip SoCs */
|
||||
host->sdio_id0 = 8;
|
||||
|
||||
if (of_device_is_compatible(host->dev->of_node,
|
||||
"rockchip,rk3288-dw-mshc"))
|
||||
if (of_device_is_compatible(host->dev->of_node, "rockchip,rk3288-dw-mshc")) {
|
||||
host->bus_hz /= RK3288_CLKGEN_DIV;
|
||||
|
||||
/* clock driver will fail if the clock is less than the lowest source clock
|
||||
* divided by the internal clock divider. Test for the lowest available
|
||||
* clock and set the minimum freq to clock / clock divider.
|
||||
*/
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(freqs); i++) {
|
||||
ret = clk_round_rate(host->ciu_clk, freqs[i] * RK3288_CLKGEN_DIV);
|
||||
if (ret > 0) {
|
||||
host->minimum_speed = ret / RK3288_CLKGEN_DIV;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (ret < 0)
|
||||
dev_warn(host->dev, "no valid minimum freq: %d\n", ret);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -2898,7 +2898,12 @@ static int dw_mci_init_slot_caps(struct dw_mci_slot *slot)
|
||||
if (host->pdata->caps2)
|
||||
mmc->caps2 = host->pdata->caps2;
|
||||
|
||||
mmc->f_min = DW_MCI_FREQ_MIN;
|
||||
/* if host has set a minimum_freq, we should respect it */
|
||||
if (host->minimum_speed)
|
||||
mmc->f_min = host->minimum_speed;
|
||||
else
|
||||
mmc->f_min = DW_MCI_FREQ_MIN;
|
||||
|
||||
if (!mmc->f_max)
|
||||
mmc->f_max = DW_MCI_FREQ_MAX;
|
||||
|
||||
@ -3057,8 +3062,7 @@ static void dw_mci_init_dma(struct dw_mci *host)
|
||||
dev_info(host->dev, "Using internal DMA controller.\n");
|
||||
} else {
|
||||
/* TRANS_MODE_EDMAC: check dma bindings again */
|
||||
if ((device_property_read_string_array(dev, "dma-names",
|
||||
NULL, 0) < 0) ||
|
||||
if ((device_property_string_array_count(dev, "dma-names") < 0) ||
|
||||
!device_property_present(dev, "dmas")) {
|
||||
goto no_dma;
|
||||
}
|
||||
@ -3568,7 +3572,7 @@ int dw_mci_runtime_resume(struct device *dev)
|
||||
mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
|
||||
|
||||
|
||||
if (host->slot->mmc->pm_flags & MMC_PM_KEEP_POWER)
|
||||
if (host->slot && host->slot->mmc->pm_flags & MMC_PM_KEEP_POWER)
|
||||
dw_mci_set_ios(host->slot->mmc, &host->slot->mmc->ios);
|
||||
|
||||
/* Force setup bus to guarantee available clock output */
|
||||
|
||||
@ -99,6 +99,7 @@ struct dw_mci_dma_slave {
|
||||
* @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus
|
||||
* rate and timeout calculations.
|
||||
* @current_speed: Configured rate of the controller.
|
||||
* @minimum_speed: Stored minimum rate of the controller.
|
||||
* @fifoth_val: The value of FIFOTH register.
|
||||
* @verid: Denote Version ID.
|
||||
* @dev: Device associated with the MMC controller.
|
||||
@ -201,6 +202,7 @@ struct dw_mci {
|
||||
|
||||
u32 bus_hz;
|
||||
u32 current_speed;
|
||||
u32 minimum_speed;
|
||||
u32 fifoth_val;
|
||||
u16 verid;
|
||||
struct device *dev;
|
||||
|
||||
661
drivers/mmc/host/litex_mmc.c
Normal file
661
drivers/mmc/host/litex_mmc.c
Normal file
@ -0,0 +1,661 @@
|
||||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* LiteX LiteSDCard driver
|
||||
*
|
||||
* Copyright (C) 2019-2020 Antmicro <contact@antmicro.com>
|
||||
* Copyright (C) 2019-2020 Kamil Rakoczy <krakoczy@antmicro.com>
|
||||
* Copyright (C) 2019-2020 Maciej Dudek <mdudek@internships.antmicro.com>
|
||||
* Copyright (C) 2020 Paul Mackerras <paulus@ozlabs.org>
|
||||
* Copyright (C) 2020-2022 Gabriel Somlo <gsomlo@gmail.com>
|
||||
*/
|
||||
|
||||
#include <linux/bits.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/iopoll.h>
|
||||
#include <linux/litex.h>
|
||||
#include <linux/mod_devicetable.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include <linux/mmc/host.h>
|
||||
#include <linux/mmc/mmc.h>
|
||||
#include <linux/mmc/sd.h>
|
||||
|
||||
#define LITEX_PHY_CARDDETECT 0x00
|
||||
#define LITEX_PHY_CLOCKERDIV 0x04
|
||||
#define LITEX_PHY_INITIALIZE 0x08
|
||||
#define LITEX_PHY_WRITESTATUS 0x0C
|
||||
#define LITEX_CORE_CMDARG 0x00
|
||||
#define LITEX_CORE_CMDCMD 0x04
|
||||
#define LITEX_CORE_CMDSND 0x08
|
||||
#define LITEX_CORE_CMDRSP 0x0C
|
||||
#define LITEX_CORE_CMDEVT 0x1C
|
||||
#define LITEX_CORE_DATEVT 0x20
|
||||
#define LITEX_CORE_BLKLEN 0x24
|
||||
#define LITEX_CORE_BLKCNT 0x28
|
||||
#define LITEX_BLK2MEM_BASE 0x00
|
||||
#define LITEX_BLK2MEM_LEN 0x08
|
||||
#define LITEX_BLK2MEM_ENA 0x0C
|
||||
#define LITEX_BLK2MEM_DONE 0x10
|
||||
#define LITEX_BLK2MEM_LOOP 0x14
|
||||
#define LITEX_MEM2BLK_BASE 0x00
|
||||
#define LITEX_MEM2BLK_LEN 0x08
|
||||
#define LITEX_MEM2BLK_ENA 0x0C
|
||||
#define LITEX_MEM2BLK_DONE 0x10
|
||||
#define LITEX_MEM2BLK_LOOP 0x14
|
||||
#define LITEX_MEM2BLK 0x18
|
||||
#define LITEX_IRQ_STATUS 0x00
|
||||
#define LITEX_IRQ_PENDING 0x04
|
||||
#define LITEX_IRQ_ENABLE 0x08
|
||||
|
||||
#define SD_CTL_DATA_XFER_NONE 0
|
||||
#define SD_CTL_DATA_XFER_READ 1
|
||||
#define SD_CTL_DATA_XFER_WRITE 2
|
||||
|
||||
#define SD_CTL_RESP_NONE 0
|
||||
#define SD_CTL_RESP_SHORT 1
|
||||
#define SD_CTL_RESP_LONG 2
|
||||
#define SD_CTL_RESP_SHORT_BUSY 3
|
||||
|
||||
#define SD_BIT_DONE BIT(0)
|
||||
#define SD_BIT_WR_ERR BIT(1)
|
||||
#define SD_BIT_TIMEOUT BIT(2)
|
||||
#define SD_BIT_CRC_ERR BIT(3)
|
||||
|
||||
#define SD_SLEEP_US 5
|
||||
#define SD_TIMEOUT_US 20000
|
||||
|
||||
#define SDIRQ_CARD_DETECT 1
|
||||
#define SDIRQ_SD_TO_MEM_DONE 2
|
||||
#define SDIRQ_MEM_TO_SD_DONE 4
|
||||
#define SDIRQ_CMD_DONE 8
|
||||
|
||||
struct litex_mmc_host {
|
||||
struct mmc_host *mmc;
|
||||
|
||||
void __iomem *sdphy;
|
||||
void __iomem *sdcore;
|
||||
void __iomem *sdreader;
|
||||
void __iomem *sdwriter;
|
||||
void __iomem *sdirq;
|
||||
|
||||
void *buffer;
|
||||
size_t buf_size;
|
||||
dma_addr_t dma;
|
||||
|
||||
struct completion cmd_done;
|
||||
int irq;
|
||||
|
||||
unsigned int ref_clk;
|
||||
unsigned int sd_clk;
|
||||
|
||||
u32 resp[4];
|
||||
u16 rca;
|
||||
|
||||
bool is_bus_width_set;
|
||||
bool app_cmd;
|
||||
};
|
||||
|
||||
static int litex_mmc_sdcard_wait_done(void __iomem *reg, struct device *dev)
|
||||
{
|
||||
u8 evt;
|
||||
int ret;
|
||||
|
||||
ret = readx_poll_timeout(litex_read8, reg, evt, evt & SD_BIT_DONE,
|
||||
SD_SLEEP_US, SD_TIMEOUT_US);
|
||||
if (ret)
|
||||
return ret;
|
||||
if (evt == SD_BIT_DONE)
|
||||
return 0;
|
||||
if (evt & SD_BIT_WR_ERR)
|
||||
return -EIO;
|
||||
if (evt & SD_BIT_TIMEOUT)
|
||||
return -ETIMEDOUT;
|
||||
if (evt & SD_BIT_CRC_ERR)
|
||||
return -EILSEQ;
|
||||
dev_err(dev, "%s: unknown error (evt=%x)\n", __func__, evt);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int litex_mmc_send_cmd(struct litex_mmc_host *host,
|
||||
u8 cmd, u32 arg, u8 response_len, u8 transfer)
|
||||
{
|
||||
struct device *dev = mmc_dev(host->mmc);
|
||||
void __iomem *reg;
|
||||
int ret;
|
||||
u8 evt;
|
||||
|
||||
litex_write32(host->sdcore + LITEX_CORE_CMDARG, arg);
|
||||
litex_write32(host->sdcore + LITEX_CORE_CMDCMD,
|
||||
cmd << 8 | transfer << 5 | response_len);
|
||||
litex_write8(host->sdcore + LITEX_CORE_CMDSND, 1);
|
||||
|
||||
/*
|
||||
* Wait for an interrupt if we have an interrupt and either there is
|
||||
* data to be transferred, or if the card can report busy via DAT0.
|
||||
*/
|
||||
if (host->irq > 0 &&
|
||||
(transfer != SD_CTL_DATA_XFER_NONE ||
|
||||
response_len == SD_CTL_RESP_SHORT_BUSY)) {
|
||||
reinit_completion(&host->cmd_done);
|
||||
litex_write32(host->sdirq + LITEX_IRQ_ENABLE,
|
||||
SDIRQ_CMD_DONE | SDIRQ_CARD_DETECT);
|
||||
wait_for_completion(&host->cmd_done);
|
||||
}
|
||||
|
||||
ret = litex_mmc_sdcard_wait_done(host->sdcore + LITEX_CORE_CMDEVT, dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "Command (cmd %d) error, status %d\n", cmd, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (response_len != SD_CTL_RESP_NONE) {
|
||||
/*
|
||||
* NOTE: this matches the semantics of litex_read32()
|
||||
* regardless of underlying arch endianness!
|
||||
*/
|
||||
memcpy_fromio(host->resp,
|
||||
host->sdcore + LITEX_CORE_CMDRSP, 0x10);
|
||||
}
|
||||
|
||||
if (!host->app_cmd && cmd == SD_SEND_RELATIVE_ADDR)
|
||||
host->rca = (host->resp[3] >> 16);
|
||||
|
||||
host->app_cmd = (cmd == MMC_APP_CMD);
|
||||
|
||||
if (transfer == SD_CTL_DATA_XFER_NONE)
|
||||
return ret; /* OK from prior litex_mmc_sdcard_wait_done() */
|
||||
|
||||
ret = litex_mmc_sdcard_wait_done(host->sdcore + LITEX_CORE_DATEVT, dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "Data xfer (cmd %d) error, status %d\n", cmd, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Wait for completion of (read or write) DMA transfer */
|
||||
reg = (transfer == SD_CTL_DATA_XFER_READ) ?
|
||||
host->sdreader + LITEX_BLK2MEM_DONE :
|
||||
host->sdwriter + LITEX_MEM2BLK_DONE;
|
||||
ret = readx_poll_timeout(litex_read8, reg, evt, evt & SD_BIT_DONE,
|
||||
SD_SLEEP_US, SD_TIMEOUT_US);
|
||||
if (ret)
|
||||
dev_err(dev, "DMA timeout (cmd %d)\n", cmd);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int litex_mmc_send_app_cmd(struct litex_mmc_host *host)
|
||||
{
|
||||
return litex_mmc_send_cmd(host, MMC_APP_CMD, host->rca << 16,
|
||||
SD_CTL_RESP_SHORT, SD_CTL_DATA_XFER_NONE);
|
||||
}
|
||||
|
||||
static int litex_mmc_send_set_bus_w_cmd(struct litex_mmc_host *host, u32 width)
|
||||
{
|
||||
return litex_mmc_send_cmd(host, SD_APP_SET_BUS_WIDTH, width,
|
||||
SD_CTL_RESP_SHORT, SD_CTL_DATA_XFER_NONE);
|
||||
}
|
||||
|
||||
static int litex_mmc_set_bus_width(struct litex_mmc_host *host)
|
||||
{
|
||||
bool app_cmd_sent;
|
||||
int ret;
|
||||
|
||||
if (host->is_bus_width_set)
|
||||
return 0;
|
||||
|
||||
/* Ensure 'app_cmd' precedes 'app_set_bus_width_cmd' */
|
||||
app_cmd_sent = host->app_cmd; /* was preceding command app_cmd? */
|
||||
if (!app_cmd_sent) {
|
||||
ret = litex_mmc_send_app_cmd(host);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* LiteSDCard only supports 4-bit bus width */
|
||||
ret = litex_mmc_send_set_bus_w_cmd(host, MMC_BUS_WIDTH_4);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Re-send 'app_cmd' if necessary */
|
||||
if (app_cmd_sent) {
|
||||
ret = litex_mmc_send_app_cmd(host);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
host->is_bus_width_set = true;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int litex_mmc_get_cd(struct mmc_host *mmc)
|
||||
{
|
||||
struct litex_mmc_host *host = mmc_priv(mmc);
|
||||
int ret;
|
||||
|
||||
if (!mmc_card_is_removable(mmc))
|
||||
return 1;
|
||||
|
||||
ret = !litex_read8(host->sdphy + LITEX_PHY_CARDDETECT);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Ensure bus width will be set (again) upon card (re)insertion */
|
||||
host->is_bus_width_set = false;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t litex_mmc_interrupt(int irq, void *arg)
|
||||
{
|
||||
struct mmc_host *mmc = arg;
|
||||
struct litex_mmc_host *host = mmc_priv(mmc);
|
||||
u32 pending = litex_read32(host->sdirq + LITEX_IRQ_PENDING);
|
||||
irqreturn_t ret = IRQ_NONE;
|
||||
|
||||
/* Check for card change interrupt */
|
||||
if (pending & SDIRQ_CARD_DETECT) {
|
||||
litex_write32(host->sdirq + LITEX_IRQ_PENDING,
|
||||
SDIRQ_CARD_DETECT);
|
||||
mmc_detect_change(mmc, msecs_to_jiffies(10));
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* Check for command completed */
|
||||
if (pending & SDIRQ_CMD_DONE) {
|
||||
/* Disable it so it doesn't keep interrupting */
|
||||
litex_write32(host->sdirq + LITEX_IRQ_ENABLE,
|
||||
SDIRQ_CARD_DETECT);
|
||||
complete(&host->cmd_done);
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static u32 litex_mmc_response_len(struct mmc_command *cmd)
|
||||
{
|
||||
if (cmd->flags & MMC_RSP_136)
|
||||
return SD_CTL_RESP_LONG;
|
||||
if (!(cmd->flags & MMC_RSP_PRESENT))
|
||||
return SD_CTL_RESP_NONE;
|
||||
if (cmd->flags & MMC_RSP_BUSY)
|
||||
return SD_CTL_RESP_SHORT_BUSY;
|
||||
return SD_CTL_RESP_SHORT;
|
||||
}
|
||||
|
||||
static void litex_mmc_do_dma(struct litex_mmc_host *host, struct mmc_data *data,
|
||||
unsigned int *len, bool *direct, u8 *transfer)
|
||||
{
|
||||
struct device *dev = mmc_dev(host->mmc);
|
||||
dma_addr_t dma;
|
||||
int sg_count;
|
||||
|
||||
/*
|
||||
* Try to DMA directly to/from the data buffer.
|
||||
* We can do that if the buffer can be mapped for DMA
|
||||
* in one contiguous chunk.
|
||||
*/
|
||||
dma = host->dma;
|
||||
*len = data->blksz * data->blocks;
|
||||
sg_count = dma_map_sg(dev, data->sg, data->sg_len,
|
||||
mmc_get_dma_dir(data));
|
||||
if (sg_count == 1) {
|
||||
dma = sg_dma_address(data->sg);
|
||||
*len = sg_dma_len(data->sg);
|
||||
*direct = true;
|
||||
} else if (*len > host->buf_size)
|
||||
*len = host->buf_size;
|
||||
|
||||
if (data->flags & MMC_DATA_READ) {
|
||||
litex_write8(host->sdreader + LITEX_BLK2MEM_ENA, 0);
|
||||
litex_write64(host->sdreader + LITEX_BLK2MEM_BASE, dma);
|
||||
litex_write32(host->sdreader + LITEX_BLK2MEM_LEN, *len);
|
||||
litex_write8(host->sdreader + LITEX_BLK2MEM_ENA, 1);
|
||||
*transfer = SD_CTL_DATA_XFER_READ;
|
||||
} else if (data->flags & MMC_DATA_WRITE) {
|
||||
if (!*direct)
|
||||
sg_copy_to_buffer(data->sg, data->sg_len,
|
||||
host->buffer, *len);
|
||||
litex_write8(host->sdwriter + LITEX_MEM2BLK_ENA, 0);
|
||||
litex_write64(host->sdwriter + LITEX_MEM2BLK_BASE, dma);
|
||||
litex_write32(host->sdwriter + LITEX_MEM2BLK_LEN, *len);
|
||||
litex_write8(host->sdwriter + LITEX_MEM2BLK_ENA, 1);
|
||||
*transfer = SD_CTL_DATA_XFER_WRITE;
|
||||
} else {
|
||||
dev_warn(dev, "Data present w/o read or write flag.\n");
|
||||
/* Continue: set cmd status, mark req done */
|
||||
}
|
||||
|
||||
litex_write16(host->sdcore + LITEX_CORE_BLKLEN, data->blksz);
|
||||
litex_write32(host->sdcore + LITEX_CORE_BLKCNT, data->blocks);
|
||||
}
|
||||
|
||||
static void litex_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
|
||||
{
|
||||
struct litex_mmc_host *host = mmc_priv(mmc);
|
||||
struct device *dev = mmc_dev(mmc);
|
||||
struct mmc_command *cmd = mrq->cmd;
|
||||
struct mmc_command *sbc = mrq->sbc;
|
||||
struct mmc_data *data = mrq->data;
|
||||
struct mmc_command *stop = mrq->stop;
|
||||
unsigned int retries = cmd->retries;
|
||||
unsigned int len = 0;
|
||||
bool direct = false;
|
||||
u32 response_len = litex_mmc_response_len(cmd);
|
||||
u8 transfer = SD_CTL_DATA_XFER_NONE;
|
||||
|
||||
/* First check that the card is still there */
|
||||
if (!litex_mmc_get_cd(mmc)) {
|
||||
cmd->error = -ENOMEDIUM;
|
||||
mmc_request_done(mmc, mrq);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Send set-block-count command if needed */
|
||||
if (sbc) {
|
||||
sbc->error = litex_mmc_send_cmd(host, sbc->opcode, sbc->arg,
|
||||
litex_mmc_response_len(sbc),
|
||||
SD_CTL_DATA_XFER_NONE);
|
||||
if (sbc->error) {
|
||||
host->is_bus_width_set = false;
|
||||
mmc_request_done(mmc, mrq);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if (data) {
|
||||
/*
|
||||
* LiteSDCard only supports 4-bit bus width; therefore, we MUST
|
||||
* inject a SET_BUS_WIDTH (acmd6) before the very first data
|
||||
* transfer, earlier than when the mmc subsystem would normally
|
||||
* get around to it!
|
||||
*/
|
||||
cmd->error = litex_mmc_set_bus_width(host);
|
||||
if (cmd->error) {
|
||||
dev_err(dev, "Can't set bus width!\n");
|
||||
mmc_request_done(mmc, mrq);
|
||||
return;
|
||||
}
|
||||
|
||||
litex_mmc_do_dma(host, data, &len, &direct, &transfer);
|
||||
}
|
||||
|
||||
do {
|
||||
cmd->error = litex_mmc_send_cmd(host, cmd->opcode, cmd->arg,
|
||||
response_len, transfer);
|
||||
} while (cmd->error && retries-- > 0);
|
||||
|
||||
if (cmd->error) {
|
||||
/* Card may be gone; don't assume bus width is still set */
|
||||
host->is_bus_width_set = false;
|
||||
}
|
||||
|
||||
if (response_len == SD_CTL_RESP_SHORT) {
|
||||
/* Pull short response fields from appropriate host registers */
|
||||
cmd->resp[0] = host->resp[3];
|
||||
cmd->resp[1] = host->resp[2] & 0xFF;
|
||||
} else if (response_len == SD_CTL_RESP_LONG) {
|
||||
cmd->resp[0] = host->resp[0];
|
||||
cmd->resp[1] = host->resp[1];
|
||||
cmd->resp[2] = host->resp[2];
|
||||
cmd->resp[3] = host->resp[3];
|
||||
}
|
||||
|
||||
/* Send stop-transmission command if required */
|
||||
if (stop && (cmd->error || !sbc)) {
|
||||
stop->error = litex_mmc_send_cmd(host, stop->opcode, stop->arg,
|
||||
litex_mmc_response_len(stop),
|
||||
SD_CTL_DATA_XFER_NONE);
|
||||
if (stop->error)
|
||||
host->is_bus_width_set = false;
|
||||
}
|
||||
|
||||
if (data) {
|
||||
dma_unmap_sg(dev, data->sg, data->sg_len,
|
||||
mmc_get_dma_dir(data));
|
||||
}
|
||||
|
||||
if (!cmd->error && transfer != SD_CTL_DATA_XFER_NONE) {
|
||||
data->bytes_xfered = min(len, mmc->max_req_size);
|
||||
if (transfer == SD_CTL_DATA_XFER_READ && !direct) {
|
||||
sg_copy_from_buffer(data->sg, sg_nents(data->sg),
|
||||
host->buffer, data->bytes_xfered);
|
||||
}
|
||||
}
|
||||
|
||||
mmc_request_done(mmc, mrq);
|
||||
}
|
||||
|
||||
static void litex_mmc_setclk(struct litex_mmc_host *host, unsigned int freq)
|
||||
{
|
||||
struct device *dev = mmc_dev(host->mmc);
|
||||
u32 div;
|
||||
|
||||
div = freq ? host->ref_clk / freq : 256U;
|
||||
div = roundup_pow_of_two(div);
|
||||
div = clamp(div, 2U, 256U);
|
||||
dev_dbg(dev, "sd_clk_freq=%d: set to %d via div=%d\n",
|
||||
freq, host->ref_clk / div, div);
|
||||
litex_write16(host->sdphy + LITEX_PHY_CLOCKERDIV, div);
|
||||
host->sd_clk = freq;
|
||||
}
|
||||
|
||||
static void litex_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
|
||||
{
|
||||
struct litex_mmc_host *host = mmc_priv(mmc);
|
||||
|
||||
/*
|
||||
* NOTE: Ignore any ios->bus_width updates; they occur right after
|
||||
* the mmc core sends its own acmd6 bus-width change notification,
|
||||
* which is redundant since we snoop on the command flow and inject
|
||||
* an early acmd6 before the first data transfer command is sent!
|
||||
*/
|
||||
|
||||
/* Update sd_clk */
|
||||
if (ios->clock != host->sd_clk)
|
||||
litex_mmc_setclk(host, ios->clock);
|
||||
}
|
||||
|
||||
static const struct mmc_host_ops litex_mmc_ops = {
|
||||
.get_cd = litex_mmc_get_cd,
|
||||
.request = litex_mmc_request,
|
||||
.set_ios = litex_mmc_set_ios,
|
||||
};
|
||||
|
||||
static int litex_mmc_irq_init(struct platform_device *pdev,
|
||||
struct litex_mmc_host *host)
|
||||
{
|
||||
struct device *dev = mmc_dev(host->mmc);
|
||||
int ret;
|
||||
|
||||
ret = platform_get_irq_optional(pdev, 0);
|
||||
if (ret < 0 && ret != -ENXIO)
|
||||
return ret;
|
||||
if (ret > 0)
|
||||
host->irq = ret;
|
||||
else {
|
||||
dev_warn(dev, "Failed to get IRQ, using polling\n");
|
||||
goto use_polling;
|
||||
}
|
||||
|
||||
host->sdirq = devm_platform_ioremap_resource_byname(pdev, "irq");
|
||||
if (IS_ERR(host->sdirq))
|
||||
return PTR_ERR(host->sdirq);
|
||||
|
||||
ret = devm_request_irq(dev, host->irq, litex_mmc_interrupt, 0,
|
||||
"litex-mmc", host->mmc);
|
||||
if (ret < 0) {
|
||||
dev_warn(dev, "IRQ request error %d, using polling\n", ret);
|
||||
goto use_polling;
|
||||
}
|
||||
|
||||
/* Clear & enable card-change interrupts */
|
||||
litex_write32(host->sdirq + LITEX_IRQ_PENDING, SDIRQ_CARD_DETECT);
|
||||
litex_write32(host->sdirq + LITEX_IRQ_ENABLE, SDIRQ_CARD_DETECT);
|
||||
|
||||
return 0;
|
||||
|
||||
use_polling:
|
||||
host->mmc->caps |= MMC_CAP_NEEDS_POLL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void litex_mmc_free_host_wrapper(void *mmc)
|
||||
{
|
||||
mmc_free_host(mmc);
|
||||
}
|
||||
|
||||
static int litex_mmc_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct litex_mmc_host *host;
|
||||
struct mmc_host *mmc;
|
||||
struct clk *clk;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* NOTE: defaults to max_[req,seg]_size=PAGE_SIZE, max_blk_size=512,
|
||||
* and max_blk_count accordingly set to 8;
|
||||
* If for some reason we need to modify max_blk_count, we must also
|
||||
* re-calculate `max_[req,seg]_size = max_blk_size * max_blk_count;`
|
||||
*/
|
||||
mmc = mmc_alloc_host(sizeof(struct litex_mmc_host), dev);
|
||||
if (!mmc)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = devm_add_action_or_reset(dev, litex_mmc_free_host_wrapper, mmc);
|
||||
if (ret)
|
||||
return dev_err_probe(dev, ret,
|
||||
"Can't register mmc_free_host action\n");
|
||||
|
||||
host = mmc_priv(mmc);
|
||||
host->mmc = mmc;
|
||||
|
||||
/* Initialize clock source */
|
||||
clk = devm_clk_get(dev, NULL);
|
||||
if (IS_ERR(clk))
|
||||
return dev_err_probe(dev, PTR_ERR(clk), "can't get clock\n");
|
||||
host->ref_clk = clk_get_rate(clk);
|
||||
host->sd_clk = 0;
|
||||
|
||||
/*
|
||||
* LiteSDCard only supports 4-bit bus width; therefore, we MUST inject
|
||||
* a SET_BUS_WIDTH (acmd6) before the very first data transfer, earlier
|
||||
* than when the mmc subsystem would normally get around to it!
|
||||
*/
|
||||
host->is_bus_width_set = false;
|
||||
host->app_cmd = false;
|
||||
|
||||
/* LiteSDCard can support 64-bit DMA addressing */
|
||||
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
host->buf_size = mmc->max_req_size * 2;
|
||||
host->buffer = dmam_alloc_coherent(dev, host->buf_size,
|
||||
&host->dma, GFP_KERNEL);
|
||||
if (host->buffer == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
host->sdphy = devm_platform_ioremap_resource_byname(pdev, "phy");
|
||||
if (IS_ERR(host->sdphy))
|
||||
return PTR_ERR(host->sdphy);
|
||||
|
||||
host->sdcore = devm_platform_ioremap_resource_byname(pdev, "core");
|
||||
if (IS_ERR(host->sdcore))
|
||||
return PTR_ERR(host->sdcore);
|
||||
|
||||
host->sdreader = devm_platform_ioremap_resource_byname(pdev, "reader");
|
||||
if (IS_ERR(host->sdreader))
|
||||
return PTR_ERR(host->sdreader);
|
||||
|
||||
host->sdwriter = devm_platform_ioremap_resource_byname(pdev, "writer");
|
||||
if (IS_ERR(host->sdwriter))
|
||||
return PTR_ERR(host->sdwriter);
|
||||
|
||||
/* Ensure DMA bus masters are disabled */
|
||||
litex_write8(host->sdreader + LITEX_BLK2MEM_ENA, 0);
|
||||
litex_write8(host->sdwriter + LITEX_MEM2BLK_ENA, 0);
|
||||
|
||||
init_completion(&host->cmd_done);
|
||||
ret = litex_mmc_irq_init(pdev, host);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
mmc->ops = &litex_mmc_ops;
|
||||
|
||||
ret = mmc_regulator_get_supply(mmc);
|
||||
if (ret || mmc->ocr_avail == 0) {
|
||||
dev_warn(dev, "can't get voltage, defaulting to 3.3V\n");
|
||||
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set default sd_clk frequency range based on empirical observations
|
||||
* of LiteSDCard gateware behavior on typical SDCard media
|
||||
*/
|
||||
mmc->f_min = 12.5e6;
|
||||
mmc->f_max = 50e6;
|
||||
|
||||
ret = mmc_of_parse(mmc);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Force 4-bit bus_width (only width supported by hardware) */
|
||||
mmc->caps &= ~MMC_CAP_8_BIT_DATA;
|
||||
mmc->caps |= MMC_CAP_4_BIT_DATA;
|
||||
|
||||
/* Set default capabilities */
|
||||
mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
|
||||
MMC_CAP_DRIVER_TYPE_D |
|
||||
MMC_CAP_CMD23;
|
||||
mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT |
|
||||
MMC_CAP2_NO_SDIO |
|
||||
MMC_CAP2_NO_MMC;
|
||||
|
||||
platform_set_drvdata(pdev, host);
|
||||
|
||||
ret = mmc_add_host(mmc);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
dev_info(dev, "LiteX MMC controller initialized.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int litex_mmc_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct litex_mmc_host *host = platform_get_drvdata(pdev);
|
||||
|
||||
mmc_remove_host(host->mmc);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id litex_match[] = {
|
||||
{ .compatible = "litex,mmc" },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, litex_match);
|
||||
|
||||
static struct platform_driver litex_mmc_driver = {
|
||||
.probe = litex_mmc_probe,
|
||||
.remove = litex_mmc_remove,
|
||||
.driver = {
|
||||
.name = "litex-mmc",
|
||||
.of_match_table = litex_match,
|
||||
},
|
||||
};
|
||||
module_platform_driver(litex_mmc_driver);
|
||||
|
||||
MODULE_DESCRIPTION("LiteX SDCard driver");
|
||||
MODULE_AUTHOR("Antmicro <contact@antmicro.com>");
|
||||
MODULE_AUTHOR("Kamil Rakoczy <krakoczy@antmicro.com>");
|
||||
MODULE_AUTHOR("Maciej Dudek <mdudek@internships.antmicro.com>");
|
||||
MODULE_AUTHOR("Paul Mackerras <paulus@ozlabs.org>");
|
||||
MODULE_AUTHOR("Gabriel Somlo <gsomlo@gmail.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
@ -1911,8 +1911,8 @@ static struct msdc_delay_phase get_best_delay(struct msdc_host *host, u32 delay)
|
||||
final_phase = (start_final + len_final / 3) % PAD_DELAY_MAX;
|
||||
else
|
||||
final_phase = (start_final + len_final / 2) % PAD_DELAY_MAX;
|
||||
dev_info(host->dev, "phase: [map:%x] [maxlen:%d] [final:%d]\n",
|
||||
delay, len_final, final_phase);
|
||||
dev_dbg(host->dev, "phase: [map:%x] [maxlen:%d] [final:%d]\n",
|
||||
delay, len_final, final_phase);
|
||||
|
||||
delay_phase.maxlen = len_final;
|
||||
delay_phase.start = start_final;
|
||||
|
||||
@ -212,7 +212,7 @@ static const struct soc_device_attribute sdhi_quirks_match[] = {
|
||||
{ .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_4tap },
|
||||
{ .soc_id = "r8a7796", .revision = "ES1.[012]", .data = &sdhi_quirks_4tap_nohs400 },
|
||||
{ .soc_id = "r8a7796", .revision = "ES1.*", .data = &sdhi_quirks_r8a7796_es13 },
|
||||
{ /* Sentinel. */ },
|
||||
{ /* Sentinel. */ }
|
||||
};
|
||||
|
||||
static const struct renesas_sdhi_of_data_with_quirks of_r8a7795_compatible = {
|
||||
|
||||
@ -38,10 +38,7 @@ struct realtek_pci_sdmmc {
|
||||
bool double_clk;
|
||||
bool eject;
|
||||
bool initial_mode;
|
||||
int power_state;
|
||||
#define SDMMC_POWER_ON 1
|
||||
#define SDMMC_POWER_OFF 0
|
||||
|
||||
int prev_power_state;
|
||||
int sg_count;
|
||||
s32 cookie;
|
||||
int cookie_sg_count;
|
||||
@ -905,7 +902,7 @@ static int sd_set_bus_width(struct realtek_pci_sdmmc *host,
|
||||
return err;
|
||||
}
|
||||
|
||||
static int sd_power_on(struct realtek_pci_sdmmc *host)
|
||||
static int sd_power_on(struct realtek_pci_sdmmc *host, unsigned char power_mode)
|
||||
{
|
||||
struct rtsx_pcr *pcr = host->pcr;
|
||||
struct mmc_host *mmc = host->mmc;
|
||||
@ -913,9 +910,14 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
|
||||
u32 val;
|
||||
u8 test_mode;
|
||||
|
||||
if (host->power_state == SDMMC_POWER_ON)
|
||||
if (host->prev_power_state == MMC_POWER_ON)
|
||||
return 0;
|
||||
|
||||
if (host->prev_power_state == MMC_POWER_UP) {
|
||||
rtsx_pci_write_register(pcr, SD_BUS_STAT, SD_CLK_TOGGLE_EN, 0);
|
||||
goto finish;
|
||||
}
|
||||
|
||||
msleep(100);
|
||||
|
||||
rtsx_pci_init_cmd(pcr);
|
||||
@ -936,10 +938,15 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
mdelay(1);
|
||||
|
||||
err = rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* send at least 74 clocks */
|
||||
rtsx_pci_write_register(pcr, SD_BUS_STAT, SD_CLK_TOGGLE_EN, SD_CLK_TOGGLE_EN);
|
||||
|
||||
if (PCI_PID(pcr) == PID_5261) {
|
||||
/*
|
||||
* If test mode is set switch to SD Express mandatorily,
|
||||
@ -964,7 +971,8 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
|
||||
}
|
||||
}
|
||||
|
||||
host->power_state = SDMMC_POWER_ON;
|
||||
finish:
|
||||
host->prev_power_state = power_mode;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -973,7 +981,7 @@ static int sd_power_off(struct realtek_pci_sdmmc *host)
|
||||
struct rtsx_pcr *pcr = host->pcr;
|
||||
int err;
|
||||
|
||||
host->power_state = SDMMC_POWER_OFF;
|
||||
host->prev_power_state = MMC_POWER_OFF;
|
||||
|
||||
rtsx_pci_init_cmd(pcr);
|
||||
|
||||
@ -999,7 +1007,7 @@ static int sd_set_power_mode(struct realtek_pci_sdmmc *host,
|
||||
if (power_mode == MMC_POWER_OFF)
|
||||
err = sd_power_off(host);
|
||||
else
|
||||
err = sd_power_on(host);
|
||||
err = sd_power_on(host, power_mode);
|
||||
|
||||
return err;
|
||||
}
|
||||
@ -1482,10 +1490,11 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
|
||||
|
||||
host = mmc_priv(mmc);
|
||||
host->pcr = pcr;
|
||||
mmc->ios.power_delay_ms = 5;
|
||||
host->mmc = mmc;
|
||||
host->pdev = pdev;
|
||||
host->cookie = -1;
|
||||
host->power_state = SDMMC_POWER_OFF;
|
||||
host->prev_power_state = MMC_POWER_OFF;
|
||||
INIT_WORK(&host->work, sd_request);
|
||||
platform_set_drvdata(pdev, host);
|
||||
pcr->slots[RTSX_SD_CARD].p_dev = pdev;
|
||||
|
||||
@ -308,17 +308,15 @@ static const struct dev_pm_ops sdhci_at91_dev_pm_ops = {
|
||||
|
||||
static int sdhci_at91_probe(struct platform_device *pdev)
|
||||
{
|
||||
const struct of_device_id *match;
|
||||
const struct sdhci_at91_soc_data *soc_data;
|
||||
struct sdhci_host *host;
|
||||
struct sdhci_pltfm_host *pltfm_host;
|
||||
struct sdhci_at91_priv *priv;
|
||||
int ret;
|
||||
|
||||
match = of_match_device(sdhci_at91_dt_match, &pdev->dev);
|
||||
if (!match)
|
||||
soc_data = of_device_get_match_data(&pdev->dev);
|
||||
if (!soc_data)
|
||||
return -EINVAL;
|
||||
soc_data = match->data;
|
||||
|
||||
host = sdhci_pltfm_init(pdev, soc_data->pdata, sizeof(*priv));
|
||||
if (IS_ERR(host))
|
||||
|
||||
@ -934,7 +934,7 @@ static struct soc_device_attribute soc_tuning_erratum_type1[] = {
|
||||
{ .family = "QorIQ T1040", },
|
||||
{ .family = "QorIQ T2080", },
|
||||
{ .family = "QorIQ LS1021A", },
|
||||
{ },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static struct soc_device_attribute soc_tuning_erratum_type2[] = {
|
||||
@ -944,7 +944,7 @@ static struct soc_device_attribute soc_tuning_erratum_type2[] = {
|
||||
{ .family = "QorIQ LS1080A", },
|
||||
{ .family = "QorIQ LS2080A", },
|
||||
{ .family = "QorIQ LA1575A", },
|
||||
{ },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static void esdhc_tuning_block_enable(struct sdhci_host *host, bool enable)
|
||||
@ -1316,21 +1316,21 @@ static const struct sdhci_pltfm_data sdhci_esdhc_le_pdata = {
|
||||
static struct soc_device_attribute soc_incorrect_hostver[] = {
|
||||
{ .family = "QorIQ T4240", .revision = "1.0", },
|
||||
{ .family = "QorIQ T4240", .revision = "2.0", },
|
||||
{ },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static struct soc_device_attribute soc_fixup_sdhc_clkdivs[] = {
|
||||
{ .family = "QorIQ LX2160A", .revision = "1.0", },
|
||||
{ .family = "QorIQ LX2160A", .revision = "2.0", },
|
||||
{ .family = "QorIQ LS1028A", .revision = "1.0", },
|
||||
{ },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static struct soc_device_attribute soc_unreliable_pulse_detection[] = {
|
||||
{ .family = "QorIQ LX2160A", .revision = "1.0", },
|
||||
{ .family = "QorIQ LX2160A", .revision = "2.0", },
|
||||
{ .family = "QorIQ LS1028A", .revision = "1.0", },
|
||||
{ },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
|
||||
|
||||
@ -13,6 +13,7 @@
|
||||
#include <linux/mmc/mmc.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/iopoll.h>
|
||||
#include "sdhci.h"
|
||||
#include "sdhci-pci.h"
|
||||
#include "cqhci.h"
|
||||
@ -63,6 +64,7 @@
|
||||
#define GLI_9750_MISC_RX_INV_OFF 0x0
|
||||
#define GLI_9750_MISC_RX_INV_VALUE GLI_9750_MISC_RX_INV_OFF
|
||||
#define GLI_9750_MISC_TX1_DLY_VALUE 0x5
|
||||
#define SDHCI_GLI_9750_MISC_SSC_OFF BIT(26)
|
||||
|
||||
#define SDHCI_GLI_9750_TUNING_CONTROL 0x540
|
||||
#define SDHCI_GLI_9750_TUNING_CONTROL_EN BIT(4)
|
||||
@ -137,6 +139,9 @@
|
||||
#define PCI_GLI_9755_SerDes 0x70
|
||||
#define PCI_GLI_9755_SCP_DIS BIT(19)
|
||||
|
||||
#define PCI_GLI_9755_MISC 0x78
|
||||
#define PCI_GLI_9755_MISC_SSC_OFF BIT(26)
|
||||
|
||||
#define GLI_MAX_TUNING_LOOP 40
|
||||
|
||||
/* Genesys Logic chipset */
|
||||
@ -371,6 +376,19 @@ static void gl9750_set_pll(struct sdhci_host *host, u8 dir, u16 ldiv, u8 pdiv)
|
||||
mdelay(1);
|
||||
}
|
||||
|
||||
static bool gl9750_ssc_enable(struct sdhci_host *host)
|
||||
{
|
||||
u32 misc;
|
||||
u8 off;
|
||||
|
||||
gl9750_wt_on(host);
|
||||
misc = sdhci_readl(host, SDHCI_GLI_9750_MISC);
|
||||
off = FIELD_GET(SDHCI_GLI_9750_MISC_SSC_OFF, misc);
|
||||
gl9750_wt_off(host);
|
||||
|
||||
return !off;
|
||||
}
|
||||
|
||||
static void gl9750_set_ssc(struct sdhci_host *host, u8 enable, u8 step, u16 ppm)
|
||||
{
|
||||
u32 pll;
|
||||
@ -392,11 +410,31 @@ static void gl9750_set_ssc(struct sdhci_host *host, u8 enable, u8 step, u16 ppm)
|
||||
|
||||
static void gl9750_set_ssc_pll_205mhz(struct sdhci_host *host)
|
||||
{
|
||||
/* set pll to 205MHz and enable ssc */
|
||||
gl9750_set_ssc(host, 0x1, 0x1F, 0xFFE7);
|
||||
bool enable = gl9750_ssc_enable(host);
|
||||
|
||||
/* set pll to 205MHz and ssc */
|
||||
gl9750_set_ssc(host, enable, 0xF, 0x5A1D);
|
||||
gl9750_set_pll(host, 0x1, 0x246, 0x0);
|
||||
}
|
||||
|
||||
static void gl9750_set_ssc_pll_100mhz(struct sdhci_host *host)
|
||||
{
|
||||
bool enable = gl9750_ssc_enable(host);
|
||||
|
||||
/* set pll to 100MHz and ssc */
|
||||
gl9750_set_ssc(host, enable, 0xE, 0x51EC);
|
||||
gl9750_set_pll(host, 0x1, 0x244, 0x1);
|
||||
}
|
||||
|
||||
static void gl9750_set_ssc_pll_50mhz(struct sdhci_host *host)
|
||||
{
|
||||
bool enable = gl9750_ssc_enable(host);
|
||||
|
||||
/* set pll to 50MHz and ssc */
|
||||
gl9750_set_ssc(host, enable, 0xE, 0x51EC);
|
||||
gl9750_set_pll(host, 0x1, 0x244, 0x3);
|
||||
}
|
||||
|
||||
static void sdhci_gl9750_set_clock(struct sdhci_host *host, unsigned int clock)
|
||||
{
|
||||
struct mmc_ios *ios = &host->mmc->ios;
|
||||
@ -414,6 +452,10 @@ static void sdhci_gl9750_set_clock(struct sdhci_host *host, unsigned int clock)
|
||||
if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
|
||||
host->mmc->actual_clock = 205000000;
|
||||
gl9750_set_ssc_pll_205mhz(host);
|
||||
} else if (clock == 100000000) {
|
||||
gl9750_set_ssc_pll_100mhz(host);
|
||||
} else if (clock == 50000000) {
|
||||
gl9750_set_ssc_pll_50mhz(host);
|
||||
}
|
||||
|
||||
sdhci_enable_clk(host, clk);
|
||||
@ -514,6 +556,19 @@ static void gl9755_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv)
|
||||
mdelay(1);
|
||||
}
|
||||
|
||||
static bool gl9755_ssc_enable(struct pci_dev *pdev)
|
||||
{
|
||||
u32 misc;
|
||||
u8 off;
|
||||
|
||||
gl9755_wt_on(pdev);
|
||||
pci_read_config_dword(pdev, PCI_GLI_9755_MISC, &misc);
|
||||
off = FIELD_GET(PCI_GLI_9755_MISC_SSC_OFF, misc);
|
||||
gl9755_wt_off(pdev);
|
||||
|
||||
return !off;
|
||||
}
|
||||
|
||||
static void gl9755_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm)
|
||||
{
|
||||
u32 pll;
|
||||
@ -535,11 +590,31 @@ static void gl9755_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm)
|
||||
|
||||
static void gl9755_set_ssc_pll_205mhz(struct pci_dev *pdev)
|
||||
{
|
||||
/* set pll to 205MHz and enable ssc */
|
||||
gl9755_set_ssc(pdev, 0x1, 0x1F, 0xFFE7);
|
||||
bool enable = gl9755_ssc_enable(pdev);
|
||||
|
||||
/* set pll to 205MHz and ssc */
|
||||
gl9755_set_ssc(pdev, enable, 0xF, 0x5A1D);
|
||||
gl9755_set_pll(pdev, 0x1, 0x246, 0x0);
|
||||
}
|
||||
|
||||
static void gl9755_set_ssc_pll_100mhz(struct pci_dev *pdev)
|
||||
{
|
||||
bool enable = gl9755_ssc_enable(pdev);
|
||||
|
||||
/* set pll to 100MHz and ssc */
|
||||
gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
|
||||
gl9755_set_pll(pdev, 0x1, 0x244, 0x1);
|
||||
}
|
||||
|
||||
static void gl9755_set_ssc_pll_50mhz(struct pci_dev *pdev)
|
||||
{
|
||||
bool enable = gl9755_ssc_enable(pdev);
|
||||
|
||||
/* set pll to 50MHz and ssc */
|
||||
gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
|
||||
gl9755_set_pll(pdev, 0x1, 0x244, 0x3);
|
||||
}
|
||||
|
||||
static void sdhci_gl9755_set_clock(struct sdhci_host *host, unsigned int clock)
|
||||
{
|
||||
struct sdhci_pci_slot *slot = sdhci_priv(host);
|
||||
@ -560,6 +635,10 @@ static void sdhci_gl9755_set_clock(struct sdhci_host *host, unsigned int clock)
|
||||
if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
|
||||
host->mmc->actual_clock = 205000000;
|
||||
gl9755_set_ssc_pll_205mhz(pdev);
|
||||
} else if (clock == 100000000) {
|
||||
gl9755_set_ssc_pll_100mhz(pdev);
|
||||
} else if (clock == 50000000) {
|
||||
gl9755_set_ssc_pll_50mhz(pdev);
|
||||
}
|
||||
|
||||
sdhci_enable_clk(host, clk);
|
||||
@ -873,6 +952,47 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot)
|
||||
pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip)
|
||||
{
|
||||
struct sdhci_pci_slot *slot = chip->slots[0];
|
||||
struct sdhci_host *host = slot->host;
|
||||
u16 clock;
|
||||
|
||||
clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
|
||||
clock &= ~(SDHCI_CLOCK_PLL_EN | SDHCI_CLOCK_CARD_EN);
|
||||
sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gl9763e_runtime_resume(struct sdhci_pci_chip *chip)
|
||||
{
|
||||
struct sdhci_pci_slot *slot = chip->slots[0];
|
||||
struct sdhci_host *host = slot->host;
|
||||
u16 clock;
|
||||
|
||||
clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
|
||||
|
||||
clock |= SDHCI_CLOCK_PLL_EN;
|
||||
clock &= ~SDHCI_CLOCK_INT_STABLE;
|
||||
sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
|
||||
|
||||
/* Wait max 150 ms */
|
||||
if (read_poll_timeout(sdhci_readw, clock, (clock & SDHCI_CLOCK_INT_STABLE),
|
||||
1000, 150000, false, host, SDHCI_CLOCK_CONTROL)) {
|
||||
pr_err("%s: PLL clock never stabilised.\n",
|
||||
mmc_hostname(host->mmc));
|
||||
sdhci_dumpregs(host);
|
||||
}
|
||||
|
||||
clock |= SDHCI_CLOCK_CARD_EN;
|
||||
sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot)
|
||||
{
|
||||
struct pci_dev *pdev = slot->chip->pdev;
|
||||
@ -982,6 +1102,11 @@ const struct sdhci_pci_fixes sdhci_gl9763e = {
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
.resume = sdhci_cqhci_gli_resume,
|
||||
.suspend = sdhci_cqhci_gli_suspend,
|
||||
#endif
|
||||
#ifdef CONFIG_PM
|
||||
.runtime_suspend = gl9763e_runtime_suspend,
|
||||
.runtime_resume = gl9763e_runtime_resume,
|
||||
.allow_runtime_pm = true,
|
||||
#endif
|
||||
.add_host = gl9763e_add_host,
|
||||
};
|
||||
|
||||
@ -1618,7 +1618,6 @@ cleanup:
|
||||
|
||||
static int sdhci_tegra_probe(struct platform_device *pdev)
|
||||
{
|
||||
const struct of_device_id *match;
|
||||
const struct sdhci_tegra_soc_data *soc_data;
|
||||
struct sdhci_host *host;
|
||||
struct sdhci_pltfm_host *pltfm_host;
|
||||
@ -1626,10 +1625,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
|
||||
struct clk *clk;
|
||||
int rc;
|
||||
|
||||
match = of_match_device(sdhci_tegra_dt_match, &pdev->dev);
|
||||
if (!match)
|
||||
soc_data = of_device_get_match_data(&pdev->dev);
|
||||
if (!soc_data)
|
||||
return -EINVAL;
|
||||
soc_data = match->data;
|
||||
|
||||
host = sdhci_pltfm_init(pdev, soc_data->pdata, sizeof(*tegra_host));
|
||||
if (IS_ERR(host))
|
||||
@ -1673,6 +1671,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
|
||||
/* HW busy detection is supported, but R1B responses are required. */
|
||||
host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
|
||||
|
||||
/* GPIO CD can be set as a wakeup source */
|
||||
host->mmc->caps |= MMC_CAP_CD_WAKE;
|
||||
|
||||
tegra_sdhci_parse_dt(host);
|
||||
|
||||
tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power",
|
||||
@ -1840,7 +1841,7 @@ static int sdhci_tegra_suspend(struct device *dev)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
return mmc_gpio_set_cd_wake(host->mmc, true);
|
||||
}
|
||||
|
||||
static int sdhci_tegra_resume(struct device *dev)
|
||||
@ -1848,6 +1849,10 @@ static int sdhci_tegra_resume(struct device *dev)
|
||||
struct sdhci_host *host = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
ret = mmc_gpio_set_cd_wake(host->mmc, false);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = pm_runtime_force_resume(dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
@ -514,26 +514,6 @@ static const struct sdhci_am654_driver_data sdhci_j721e_4bit_drvdata = {
|
||||
.flags = IOMUX_PRESENT,
|
||||
};
|
||||
|
||||
static const struct sdhci_pltfm_data sdhci_am64_8bit_pdata = {
|
||||
.ops = &sdhci_j721e_8bit_ops,
|
||||
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
|
||||
};
|
||||
|
||||
static const struct sdhci_am654_driver_data sdhci_am64_8bit_drvdata = {
|
||||
.pdata = &sdhci_am64_8bit_pdata,
|
||||
.flags = DLL_PRESENT | DLL_CALIB,
|
||||
};
|
||||
|
||||
static const struct sdhci_pltfm_data sdhci_am64_4bit_pdata = {
|
||||
.ops = &sdhci_j721e_4bit_ops,
|
||||
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
|
||||
};
|
||||
|
||||
static const struct sdhci_am654_driver_data sdhci_am64_4bit_drvdata = {
|
||||
.pdata = &sdhci_am64_4bit_pdata,
|
||||
.flags = IOMUX_PRESENT,
|
||||
};
|
||||
|
||||
static const struct soc_device_attribute sdhci_am654_devices[] = {
|
||||
{ .family = "AM65X",
|
||||
.revision = "SR1.0",
|
||||
@ -759,11 +739,15 @@ static const struct of_device_id sdhci_am654_of_match[] = {
|
||||
},
|
||||
{
|
||||
.compatible = "ti,am64-sdhci-8bit",
|
||||
.data = &sdhci_am64_8bit_drvdata,
|
||||
.data = &sdhci_j721e_8bit_drvdata,
|
||||
},
|
||||
{
|
||||
.compatible = "ti,am64-sdhci-4bit",
|
||||
.data = &sdhci_am64_4bit_drvdata,
|
||||
.data = &sdhci_j721e_4bit_drvdata,
|
||||
},
|
||||
{
|
||||
.compatible = "ti,am62-sdhci",
|
||||
.data = &sdhci_j721e_4bit_drvdata,
|
||||
},
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
@ -521,8 +521,7 @@ static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
|
||||
}
|
||||
|
||||
dev_dbg(dev, "clk %u/%u (%u, 0x%x)\n",
|
||||
(best_freq / (1 << (clkdiv + 1))), clk,
|
||||
best_freq, clkdiv);
|
||||
(best_freq >> (clkdiv + 1)), clk, best_freq, clkdiv);
|
||||
|
||||
clk_set_rate(host->clk, best_freq);
|
||||
clkdiv = clkdiv << 16;
|
||||
@ -1012,8 +1011,8 @@ static void sh_mmcif_clk_setup(struct sh_mmcif_host *host)
|
||||
*/
|
||||
host->clkdiv_map = 0x3ff;
|
||||
|
||||
host->mmc->f_max = f_max / (1 << ffs(host->clkdiv_map));
|
||||
host->mmc->f_min = f_min / (1 << fls(host->clkdiv_map));
|
||||
host->mmc->f_max = f_max >> ffs(host->clkdiv_map);
|
||||
host->mmc->f_min = f_min >> fls(host->clkdiv_map);
|
||||
} else {
|
||||
unsigned int clk = clk_get_rate(host->clk);
|
||||
|
||||
|
||||
@ -1167,6 +1167,14 @@ static const struct sunxi_mmc_cfg sun9i_a80_cfg = {
|
||||
.can_calibrate = false,
|
||||
};
|
||||
|
||||
static const struct sunxi_mmc_cfg sun20i_d1_cfg = {
|
||||
.idma_des_size_bits = 13,
|
||||
.idma_des_shift = 2,
|
||||
.can_calibrate = true,
|
||||
.mask_data0 = true,
|
||||
.needs_new_timings = true,
|
||||
};
|
||||
|
||||
static const struct sunxi_mmc_cfg sun50i_a64_cfg = {
|
||||
.idma_des_size_bits = 16,
|
||||
.clk_delays = NULL,
|
||||
@ -1205,6 +1213,7 @@ static const struct of_device_id sunxi_mmc_of_match[] = {
|
||||
{ .compatible = "allwinner,sun7i-a20-mmc", .data = &sun7i_a20_cfg },
|
||||
{ .compatible = "allwinner,sun8i-a83t-emmc", .data = &sun8i_a83t_emmc_cfg },
|
||||
{ .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg },
|
||||
{ .compatible = "allwinner,sun20i-d1-mmc", .data = &sun20i_d1_cfg },
|
||||
{ .compatible = "allwinner,sun50i-a64-mmc", .data = &sun50i_a64_cfg },
|
||||
{ .compatible = "allwinner,sun50i-a64-emmc", .data = &sun50i_a64_emmc_cfg },
|
||||
{ .compatible = "allwinner,sun50i-a100-mmc", .data = &sun50i_a100_cfg },
|
||||
|
||||
@ -186,10 +186,6 @@ struct tmio_mmc_host {
|
||||
void (*fixup_request)(struct tmio_mmc_host *host, struct mmc_request *mrq);
|
||||
unsigned int (*get_timeout_cycles)(struct tmio_mmc_host *host);
|
||||
|
||||
void (*prepare_hs400_tuning)(struct tmio_mmc_host *host);
|
||||
void (*hs400_downgrade)(struct tmio_mmc_host *host);
|
||||
void (*hs400_complete)(struct tmio_mmc_host *host);
|
||||
|
||||
const struct tmio_mmc_dma_ops *dma_ops;
|
||||
};
|
||||
|
||||
|
||||
@ -751,19 +751,16 @@ static int wmt_mci_probe(struct platform_device *pdev)
|
||||
struct mmc_host *mmc;
|
||||
struct wmt_mci_priv *priv;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
const struct of_device_id *of_id =
|
||||
of_match_device(wmt_mci_dt_ids, &pdev->dev);
|
||||
const struct wmt_mci_caps *wmt_caps;
|
||||
int ret;
|
||||
int regular_irq, dma_irq;
|
||||
|
||||
if (!of_id || !of_id->data) {
|
||||
wmt_caps = of_device_get_match_data(&pdev->dev);
|
||||
if (!wmt_caps) {
|
||||
dev_err(&pdev->dev, "Controller capabilities data missing\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
wmt_caps = of_id->data;
|
||||
|
||||
if (!np) {
|
||||
dev_err(&pdev->dev, "Missing SDMMC description in devicetree\n");
|
||||
return -EFAULT;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user