diff --git a/0001-ARM-sunxi-Add-driver-for-SD-MMC-hosts-found-on-Allwi.patch b/0001-ARM-sunxi-Add-driver-for-SD-MMC-hosts-found-on-Allwi.patch new file mode 100644 index 000000000..de006062f --- /dev/null +++ b/0001-ARM-sunxi-Add-driver-for-SD-MMC-hosts-found-on-Allwi.patch @@ -0,0 +1,2201 @@ +From 528a5cd576861f90f51398c707c602a79623492d Mon Sep 17 00:00:00 2001 +From: Hans de Goede +Date: Thu, 5 Sep 2013 19:52:41 -0300 +Subject: [PATCH] ARM: sunxi: Add driver for SD/MMC hosts found on Allwinner + sunxi SoCs +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The Allwinner sunxi mmc host uses dma in bus-master mode using a built-in +designware idmac controller, which is identical to the one found in the mmc-dw +hosts. However the rest of the host is not identical to mmc-dw, it deals with +sending stop commands in hardware which makes it significantly different +from the mmc-dw devices. + +Signed-off-by: David Lanzendörfer +Signed-off-by: Emilio López +Signed-off-by: Hans de Goede +--- + .../devicetree/bindings/mmc/sunxi-mmc.txt | 43 + + arch/arm/boot/dts/Makefile | 1 + + arch/arm/boot/dts/sun4i-a10-a1000.dts | 9 + + arch/arm/boot/dts/sun4i-a10-cubieboard.dts | 9 + + arch/arm/boot/dts/sun4i-a10-hackberry.dts | 9 + + arch/arm/boot/dts/sun4i-a10-inet97fv2.dts | 9 + + arch/arm/boot/dts/sun4i-a10-mini-xplus.dts | 9 + + arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts | 9 + + arch/arm/boot/dts/sun4i-a10-pcduino.dts | 9 + + arch/arm/boot/dts/sun4i-a10.dtsi | 50 + + arch/arm/boot/dts/sun5i-a10s-olinuxino-micro.dts | 32 + + arch/arm/boot/dts/sun5i-a10s.dtsi | 41 + + arch/arm/boot/dts/sun5i-a13-olinuxino-micro.dts | 16 + + arch/arm/boot/dts/sun5i-a13-olinuxino.dts | 16 + + arch/arm/boot/dts/sun5i-a13.dtsi | 25 + + arch/arm/boot/dts/sun6i-a31-m9.dts | 46 + + arch/arm/boot/dts/sun6i-a31.dtsi | 91 ++ + arch/arm/boot/dts/sun7i-a20-cubieboard2.dts | 9 + + arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 40 + + arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts | 25 + + arch/arm/boot/dts/sun7i-a20.dtsi | 57 + + drivers/clk/sunxi/clk-factors.c | 36 + + drivers/clk/sunxi/clk-sunxi.c | 36 + + drivers/mmc/host/Kconfig | 7 + + drivers/mmc/host/Makefile | 2 + + drivers/mmc/host/sunxi-mmc.c | 1125 ++++++++++++++++++++ + include/linux/clk/sunxi.h | 22 + + 27 files changed, 1783 insertions(+) + create mode 100644 Documentation/devicetree/bindings/mmc/sunxi-mmc.txt + create mode 100644 arch/arm/boot/dts/sun6i-a31-m9.dts + create mode 100644 drivers/mmc/host/sunxi-mmc.c + create mode 100644 include/linux/clk/sunxi.h + +diff --git a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt +new file mode 100644 +index 0000000..f0c06e7 +--- /dev/null ++++ b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt +@@ -0,0 +1,43 @@ ++* Allwinner sunxi MMC controller ++ ++The highspeed MMC host controller on Allwinner SoCs provides an interface ++for MMC, SD and SDIO types of memory cards. ++ ++Supported maximum speeds are the ones of the eMMC standard 4.5 as well ++as the speed of SD standard 3.0. ++Absolute maximum transfer rate is 200MB/s ++ ++Required properties: ++ - compatible : "allwinner,sun4i-a10-mmc" or "allwinner,sun5i-a13-mmc" ++ - reg : mmc controller base registers ++ - clocks : a list with 2 phandle + clock specifier pairs ++ - clock-names : must contain "ahb" and "mod" ++ - interrupts : mmc controller interrupt ++ ++Optional properties: ++ - resets : phandle + reset specifier pair ++ - reset-names : must contain "ahb" ++ - for cd, bus-width and additional generic mmc parameters ++ please refer to mmc.txt within this directory ++ ++Examples: ++ - Within .dtsi: ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <0 32 4>; ++ status = "disabled"; ++ }; ++ ++ - Within dts: ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default", "default"; ++ pinctrl-0 = <&mmc0_pins_a>; ++ pinctrl-1 = <&mmc0_cd_pin_reference_design>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; +diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile +index 35c146f..1cd137d 100644 +--- a/arch/arm/boot/dts/Makefile ++++ b/arch/arm/boot/dts/Makefile +@@ -351,6 +351,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += \ + sun5i-a13-olinuxino.dtb \ + sun5i-a13-olinuxino-micro.dtb \ + sun6i-a31-colombus.dtb \ ++ sun6i-a31-m9.dtb \ + sun7i-a20-cubieboard2.dtb \ + sun7i-a20-cubietruck.dtb \ + sun7i-a20-olinuxino-micro.dtb +diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts +index fa746aea..3056db5 100644 +--- a/arch/arm/boot/dts/sun4i-a10-a1000.dts ++++ b/arch/arm/boot/dts/sun4i-a10-a1000.dts +@@ -36,6 +36,15 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts +index 4684cbe..ad9321b 100644 +--- a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts ++++ b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts +@@ -34,6 +34,15 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10-hackberry.dts b/arch/arm/boot/dts/sun4i-a10-hackberry.dts +index d7c17e4..62defd5 100644 +--- a/arch/arm/boot/dts/sun4i-a10-hackberry.dts ++++ b/arch/arm/boot/dts/sun4i-a10-hackberry.dts +@@ -36,6 +36,15 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10-inet97fv2.dts b/arch/arm/boot/dts/sun4i-a10-inet97fv2.dts +index fe9272e..d1a9e34 100644 +--- a/arch/arm/boot/dts/sun4i-a10-inet97fv2.dts ++++ b/arch/arm/boot/dts/sun4i-a10-inet97fv2.dts +@@ -24,6 +24,15 @@ + }; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + uart0: serial@01c28000 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_pins_a>; +diff --git a/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts b/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts +index dd84a9e..07a598f 100644 +--- a/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts ++++ b/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts +@@ -20,6 +20,15 @@ + compatible = "pineriver,mini-xplus", "allwinner,sun4i-a10"; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts b/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts +index 66cf0c7..8d5d321 100644 +--- a/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts ++++ b/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts +@@ -33,6 +33,15 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10-pcduino.dts b/arch/arm/boot/dts/sun4i-a10-pcduino.dts +index 255b47e..ce02086 100644 +--- a/arch/arm/boot/dts/sun4i-a10-pcduino.dts ++++ b/arch/arm/boot/dts/sun4i-a10-pcduino.dts +@@ -34,6 +34,15 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi +index 9174724..29fd4f5 100644 +--- a/arch/arm/boot/dts/sun4i-a10.dtsi ++++ b/arch/arm/boot/dts/sun4i-a10.dtsi +@@ -377,6 +377,42 @@ + #size-cells = <0>; + }; + ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun4i-a10-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <32>; ++ status = "disabled"; ++ }; ++ ++ mmc1: mmc@01c10000 { ++ compatible = "allwinner,sun4i-a10-mmc"; ++ reg = <0x01c10000 0x1000>; ++ clocks = <&ahb_gates 9>, <&mmc1_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <33>; ++ status = "disabled"; ++ }; ++ ++ mmc2: mmc@01c11000 { ++ compatible = "allwinner,sun4i-a10-mmc"; ++ reg = <0x01c11000 0x1000>; ++ clocks = <&ahb_gates 10>, <&mmc2_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <34>; ++ status = "disabled"; ++ }; ++ ++ mmc3: mmc@01c12000 { ++ compatible = "allwinner,sun4i-a10-mmc"; ++ reg = <0x01c12000 0x1000>; ++ clocks = <&ahb_gates 11>, <&mmc3_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <35>; ++ status = "disabled"; ++ }; ++ + usbphy: phy@01c13400 { + #phy-cells = <1>; + compatible = "allwinner,sun4i-a10-usb-phy"; +@@ -529,6 +565,20 @@ + allwinner,drive = <0>; + allwinner,pull = <0>; + }; ++ ++ mmc0_pins_a: mmc0@0 { ++ allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5"; ++ allwinner,function = "mmc0"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; ++ ++ mmc0_cd_pin_a: mmc0_cd_pin@0 { ++ allwinner,pins = "PH1"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; + }; + + timer@01c20c00 { +diff --git a/arch/arm/boot/dts/sun5i-a10s-olinuxino-micro.dts b/arch/arm/boot/dts/sun5i-a10s-olinuxino-micro.dts +index 23611b7..de91308 100644 +--- a/arch/arm/boot/dts/sun5i-a10s-olinuxino-micro.dts ++++ b/arch/arm/boot/dts/sun5i-a10s-olinuxino-micro.dts +@@ -35,6 +35,24 @@ + }; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_olinuxino_micro>; ++ bus-width = <4>; ++ cd-gpios = <&pio 6 1 0>; /* PG1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ ++ mmc1: mmc@01c10000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc1_pins_a>, <&mmc1_cd_pin_olinuxino_micro>; ++ bus-width = <4>; ++ cd-gpios = <&pio 6 13 0>; /* PG13 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + status = "okay"; +@@ -49,6 +67,20 @@ + }; + + pinctrl@01c20800 { ++ mmc0_cd_pin_olinuxino_micro: mmc0_cd_pin@0 { ++ allwinner,pins = "PG1"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ ++ mmc1_cd_pin_olinuxino_micro: mmc1_cd_pin@0 { ++ allwinner,pins = "PG13"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ + led_pins_olinuxino: led_pins@0 { + allwinner,pins = "PE3"; + allwinner,function = "gpio_out"; +diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi +index 79989ed..fb345c2 100644 +--- a/arch/arm/boot/dts/sun5i-a10s.dtsi ++++ b/arch/arm/boot/dts/sun5i-a10s.dtsi +@@ -338,6 +338,33 @@ + #size-cells = <0>; + }; + ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <32>; ++ status = "disabled"; ++ }; ++ ++ mmc1: mmc@01c10000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c10000 0x1000>; ++ clocks = <&ahb_gates 9>, <&mmc1_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <33>; ++ status = "disabled"; ++ }; ++ ++ mmc2: mmc@01c11000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c11000 0x1000>; ++ clocks = <&ahb_gates 10>, <&mmc2_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <34>; ++ status = "disabled"; ++ }; ++ + usbphy: phy@01c13400 { + #phy-cells = <1>; + compatible = "allwinner,sun5i-a13-usb-phy"; +@@ -451,6 +478,20 @@ + allwinner,drive = <0>; + allwinner,pull = <0>; + }; ++ ++ mmc0_pins_a: mmc0@0 { ++ allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5"; ++ allwinner,function = "mmc0"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; ++ ++ mmc1_pins_a: mmc1@0 { ++ allwinner,pins = "PG3","PG4","PG5","PG6","PG7","PG8"; ++ allwinner,function = "mmc1"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; + }; + + timer@01c20c00 { +diff --git a/arch/arm/boot/dts/sun5i-a13-olinuxino-micro.dts b/arch/arm/boot/dts/sun5i-a13-olinuxino-micro.dts +index 11169d5..8515f19 100644 +--- a/arch/arm/boot/dts/sun5i-a13-olinuxino-micro.dts ++++ b/arch/arm/boot/dts/sun5i-a13-olinuxino-micro.dts +@@ -21,6 +21,15 @@ + compatible = "olimex,a13-olinuxino-micro", "allwinner,sun5i-a13"; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_olinuxinom>; ++ bus-width = <4>; ++ cd-gpios = <&pio 6 0 0>; /* PG0 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + status = "okay"; +@@ -35,6 +44,13 @@ + }; + + pinctrl@01c20800 { ++ mmc0_cd_pin_olinuxinom: mmc0_cd_pin@0 { ++ allwinner,pins = "PG0"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ + led_pins_olinuxinom: led_pins@0 { + allwinner,pins = "PG9"; + allwinner,function = "gpio_out"; +diff --git a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts +index 7a9187b..51a9438 100644 +--- a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts ++++ b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts +@@ -20,6 +20,15 @@ + compatible = "olimex,a13-olinuxino", "allwinner,sun5i-a13"; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_olinuxino>; ++ bus-width = <4>; ++ cd-gpios = <&pio 6 0 0>; /* PG0 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + status = "okay"; +@@ -34,6 +43,13 @@ + }; + + pinctrl@01c20800 { ++ mmc0_cd_pin_olinuxino: mmc0_cd_pin@0 { ++ allwinner,pins = "PG0"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ + led_pins_olinuxino: led_pins@0 { + allwinner,pins = "PG9"; + allwinner,function = "gpio_out"; +diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi +index f01c315..48ffa51 100644 +--- a/arch/arm/boot/dts/sun5i-a13.dtsi ++++ b/arch/arm/boot/dts/sun5i-a13.dtsi +@@ -320,6 +320,24 @@ + #size-cells = <0>; + }; + ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <32>; ++ status = "disabled"; ++ }; ++ ++ mmc2: mmc@01c11000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c11000 0x1000>; ++ clocks = <&ahb_gates 10>, <&mmc2_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <34>; ++ status = "disabled"; ++ }; ++ + usbphy: phy@01c13400 { + #phy-cells = <1>; + compatible = "allwinner,sun5i-a13-usb-phy"; +@@ -415,6 +433,13 @@ + allwinner,drive = <0>; + allwinner,pull = <0>; + }; ++ ++ mmc0_pins_a: mmc0@0 { ++ allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5"; ++ allwinner,function = "mmc0"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; + }; + + timer@01c20c00 { +diff --git a/arch/arm/boot/dts/sun6i-a31-m9.dts b/arch/arm/boot/dts/sun6i-a31-m9.dts +new file mode 100644 +index 0000000..a188721 +--- /dev/null ++++ b/arch/arm/boot/dts/sun6i-a31-m9.dts +@@ -0,0 +1,46 @@ ++/* ++ * Copyright 2014 Hans de Goede ++ * ++ * The code contained herein is licensed under the GNU General Public ++ * License. You may obtain a copy of the GNU General Public License ++ * Version 2 or later at the following locations: ++ * ++ * http://www.opensource.org/licenses/gpl-license.html ++ * http://www.gnu.org/copyleft/gpl.html ++ */ ++ ++/dts-v1/; ++/include/ "sun6i-a31.dtsi" ++ ++/ { ++ model = "Mele M9 / A1000G Quad top set box"; ++ compatible = "mele,m9", "allwinner,sun6i-a31"; ++ ++ chosen { ++ bootargs = "earlyprintk console=ttyS0,115200"; ++ }; ++ ++ soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_m9>; ++ cd-gpios = <&pio 7 22 0>; /* PH22 */ ++ status = "okay"; ++ }; ++ ++ pio: pinctrl@01c20800 { ++ mmc0_cd_pin_m9: mmc0_cd_pin@0 { ++ allwinner,pins = "PH22"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ }; ++ ++ uart0: serial@01c28000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&uart0_pins_a>; ++ status = "okay"; ++ }; ++ }; ++}; +diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi +index d45efa7..0939fc1 100644 +--- a/arch/arm/boot/dts/sun6i-a31.dtsi ++++ b/arch/arm/boot/dts/sun6i-a31.dtsi +@@ -198,6 +198,38 @@ + "apb2_uart4", "apb2_uart5"; + }; + ++ mmc0_clk: clk@01c20088 { ++ #clock-cells = <0>; ++ compatible = "allwinner,sun4i-a10-mod0-clk"; ++ reg = <0x01c20088 0x4>; ++ clocks = <&osc24M>, <&pll6>; ++ clock-output-names = "mmc0"; ++ }; ++ ++ mmc1_clk: clk@01c2008c { ++ #clock-cells = <0>; ++ compatible = "allwinner,sun4i-a10-mod0-clk"; ++ reg = <0x01c2008c 0x4>; ++ clocks = <&osc24M>, <&pll6>; ++ clock-output-names = "mmc1"; ++ }; ++ ++ mmc2_clk: clk@01c20090 { ++ #clock-cells = <0>; ++ compatible = "allwinner,sun4i-a10-mod0-clk"; ++ reg = <0x01c20090 0x4>; ++ clocks = <&osc24M>, <&pll6>; ++ clock-output-names = "mmc2"; ++ }; ++ ++ mmc3_clk: clk@01c20094 { ++ #clock-cells = <0>; ++ compatible = "allwinner,sun4i-a10-mod0-clk"; ++ reg = <0x01c20094 0x4>; ++ clocks = <&osc24M>, <&pll6>; ++ clock-output-names = "mmc3"; ++ }; ++ + spi0_clk: clk@01c200a0 { + #clock-cells = <0>; + compatible = "allwinner,sun4i-a10-mod0-clk"; +@@ -237,6 +269,58 @@ + #size-cells = <1>; + ranges; + ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb1_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ resets = <&ahb1_rst 8>; ++ reset-names = "ahb"; ++ interrupts = <0 60 4>; ++ bus-width = <4>; ++ cd-inverted; ++ status = "disabled"; ++ }; ++ ++ mmc1: mmc@01c10000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c10000 0x1000>; ++ clocks = <&ahb1_gates 9>, <&mmc1_clk>; ++ clock-names = "ahb", "mod"; ++ resets = <&ahb1_rst 9>; ++ reset-names = "reset"; ++ interrupts = <0 61 4>; ++ bus-width = <4>; ++ cd-inverted; ++ status = "disabled"; ++ }; ++ ++ mmc2: mmc@01c11000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c11000 0x1000>; ++ clocks = <&ahb1_gates 10>, <&mmc2_clk>; ++ clock-names = "ahb", "mod"; ++ resets = <&ahb1_rst 10>; ++ reset-names = "reset"; ++ interrupts = <0 62 4>; ++ bus-width = <4>; ++ cd-inverted; ++ status = "disabled"; ++ }; ++ ++ mmc3: mmc@01c12000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c12000 0x1000>; ++ clocks = <&ahb1_gates 11>, <&mmc3_clk>; ++ clock-names = "ahb", "mod"; ++ resets = <&ahb1_rst 11>; ++ reset-names = "reset"; ++ interrupts = <0 63 4>; ++ bus-width = <4>; ++ cd-inverted; ++ status = "disabled"; ++ }; ++ + nmi_intc: interrupt-controller@01f00c0c { + compatible = "allwinner,sun6i-a31-sc-nmi"; + interrupt-controller; +@@ -286,6 +370,13 @@ + allwinner,drive = <0>; + allwinner,pull = <0>; + }; ++ ++ mmc0_pins_a: mmc0@0 { ++ allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5"; ++ allwinner,function = "mmc0"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; + }; + + ahb1_rst: reset@01c202c0 { +diff --git a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts +index 68de89f..b41aa99 100644 +--- a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts ++++ b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts +@@ -20,6 +20,15 @@ + compatible = "cubietech,cubieboard2", "allwinner,sun7i-a20"; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts +index cb25d3c..270bac0 100644 +--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts ++++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts +@@ -20,6 +20,23 @@ + compatible = "cubietech,cubietruck", "allwinner,sun7i-a20"; + + soc@01c00000 { ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ ++ mmc3: mmc@01c12000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc3_pins_a>; ++ vmmc-supply = <®_vmmc3>; ++ non-removable; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +@@ -48,6 +65,18 @@ + }; + + pinctrl@01c20800 { ++ mmc3_pins_a: mmc3@0 { ++ /* AP6210 requires pull-up */ ++ allwinner,pull = <1>; ++ }; ++ ++ vmmc3_pin_cubietruck: vmmc3_pin@0 { ++ allwinner,pins = "PH9"; ++ allwinner,function = "gpio_out"; ++ allwinner,drive = <0>; ++ allwinner,pull = <0>; ++ }; ++ + ahci_pwr_pin_cubietruck: ahci_pwr_pin@1 { + allwinner,pins = "PH12"; + allwinner,function = "gpio_out"; +@@ -139,4 +168,15 @@ + reg_usb2_vbus: usb2-vbus { + status = "okay"; + }; ++ ++ reg_vmmc3: vmmc3 { ++ compatible = "regulator-fixed"; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&vmmc3_pin_cubietruck>; ++ regulator-name = "vmmc3"; ++ regulator-min-microvolt = <3300000>; ++ regulator-max-microvolt = <3300000>; ++ enable-active-high; ++ gpio = <&pio 7 9 0>; ++ }; + }; +diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts +index eeadf76..f989554 100644 +--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts ++++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts +@@ -31,6 +31,24 @@ + status = "okay"; + }; + ++ mmc0: mmc@01c0f000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_a>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 1 0>; /* PH1 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ ++ mmc3: mmc@01c12000 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mmc3_pins_a>, <&mmc3_cd_pin_olinuxinom>; ++ bus-width = <4>; ++ cd-gpios = <&pio 7 11 0>; /* PH11 */ ++ cd-inverted; ++ status = "okay"; ++ }; ++ + usbphy: phy@01c13400 { + usb1_vbus-supply = <®_usb1_vbus>; + usb2_vbus-supply = <®_usb2_vbus>; +@@ -65,6 +83,13 @@ + }; + + pinctrl@01c20800 { ++ mmc3_cd_pin_olinuxinom: mmc3_cd_pin@0 { ++ allwinner,pins = "PH11"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ + led_pins_olinuxino: led_pins@0 { + allwinner,pins = "PH2"; + allwinner,function = "gpio_out"; +diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi +index 32efc10..99e8336 100644 +--- a/arch/arm/boot/dts/sun7i-a20.dtsi ++++ b/arch/arm/boot/dts/sun7i-a20.dtsi +@@ -447,6 +447,42 @@ + #size-cells = <0>; + }; + ++ mmc0: mmc@01c0f000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c0f000 0x1000>; ++ clocks = <&ahb_gates 8>, <&mmc0_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <0 32 4>; ++ status = "disabled"; ++ }; ++ ++ mmc1: mmc@01c10000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c10000 0x1000>; ++ clocks = <&ahb_gates 9>, <&mmc1_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <0 33 4>; ++ status = "disabled"; ++ }; ++ ++ mmc2: mmc@01c11000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c11000 0x1000>; ++ clocks = <&ahb_gates 10>, <&mmc2_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <0 34 4>; ++ status = "disabled"; ++ }; ++ ++ mmc3: mmc@01c12000 { ++ compatible = "allwinner,sun5i-a13-mmc"; ++ reg = <0x01c12000 0x1000>; ++ clocks = <&ahb_gates 11>, <&mmc3_clk>; ++ clock-names = "ahb", "mod"; ++ interrupts = <0 35 4>; ++ status = "disabled"; ++ }; ++ + usbphy: phy@01c13400 { + #phy-cells = <1>; + compatible = "allwinner,sun7i-a20-usb-phy"; +@@ -653,6 +689,27 @@ + allwinner,drive = <0>; + allwinner,pull = <0>; + }; ++ ++ mmc0_pins_a: mmc0@0 { ++ allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5"; ++ allwinner,function = "mmc0"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; ++ ++ mmc0_cd_pin_a: mmc0_cd_pin@0 { ++ allwinner,pins = "PH1"; ++ allwinner,function = "gpio_in"; ++ allwinner,drive = <0>; ++ allwinner,pull = <1>; ++ }; ++ ++ mmc3_pins_a: mmc3@0 { ++ allwinner,pins = "PI4","PI5","PI6","PI7","PI8","PI9"; ++ allwinner,function = "mmc3"; ++ allwinner,drive = <2>; ++ allwinner,pull = <0>; ++ }; + }; + + timer@01c20c00 { +diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c +index 9e23264..3806d97 100644 +--- a/drivers/clk/sunxi/clk-factors.c ++++ b/drivers/clk/sunxi/clk-factors.c +@@ -77,6 +77,41 @@ static long clk_factors_round_rate(struct clk_hw *hw, unsigned long rate, + return rate; + } + ++static long clk_factors_determine_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *best_parent_rate, ++ struct clk **best_parent_p) ++{ ++ struct clk *clk = hw->clk, *parent, *best_parent = NULL; ++ int i, num_parents; ++ unsigned long parent_rate, best = 0, child_rate, best_child_rate = 0; ++ ++ /* find the parent that can help provide the fastest rate <= rate */ ++ num_parents = __clk_get_num_parents(clk); ++ for (i = 0; i < num_parents; i++) { ++ parent = clk_get_parent_by_index(clk, i); ++ if (!parent) ++ continue; ++ if (__clk_get_flags(clk) & CLK_SET_RATE_PARENT) ++ parent_rate = __clk_round_rate(parent, rate); ++ else ++ parent_rate = __clk_get_rate(parent); ++ ++ child_rate = clk_factors_round_rate(hw, rate, &parent_rate); ++ ++ if (child_rate <= rate && child_rate > best_child_rate) { ++ best_parent = parent; ++ best = parent_rate; ++ best_child_rate = child_rate; ++ } ++ } ++ ++ if (best_parent) ++ *best_parent_p = best_parent; ++ *best_parent_rate = best; ++ ++ return best_child_rate; ++} ++ + static int clk_factors_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) + { +@@ -113,6 +148,7 @@ static int clk_factors_set_rate(struct clk_hw *hw, unsigned long rate, + } + + const struct clk_ops clk_factors_ops = { ++ .determine_rate = clk_factors_determine_rate, + .recalc_rate = clk_factors_recalc_rate, + .round_rate = clk_factors_round_rate, + .set_rate = clk_factors_set_rate, +diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c +index bd7dc73..59f9040 100644 +--- a/drivers/clk/sunxi/clk-sunxi.c ++++ b/drivers/clk/sunxi/clk-sunxi.c +@@ -507,6 +507,42 @@ CLK_OF_DECLARE(sun7i_a20_gmac, "allwinner,sun7i-a20-gmac-clk", + + + /** ++ * clk_sunxi_mmc_phase_control() - configures MMC clock phase control ++ */ ++ ++void clk_sunxi_mmc_phase_control(struct clk_hw *hw, u8 sample, u8 output) ++{ ++ #define to_clk_composite(_hw) container_of(_hw, struct clk_composite, hw) ++ #define to_clk_factors(_hw) container_of(_hw, struct clk_factors, hw) ++ ++ struct clk_composite *composite = to_clk_composite(hw); ++ struct clk_hw *rate_hw = composite->rate_hw; ++ struct clk_factors *factors = to_clk_factors(rate_hw); ++ unsigned long flags = 0; ++ u32 reg; ++ ++ if (factors->lock) ++ spin_lock_irqsave(factors->lock, flags); ++ ++ reg = readl(factors->reg); ++ ++ /* set sample clock phase control */ ++ reg &= ~(0x7 << 20); ++ reg |= ((sample & 0x7) << 20); ++ ++ /* set output clock phase control */ ++ reg &= ~(0x7 << 8); ++ reg |= ((output & 0x7) << 8); ++ ++ writel(reg, factors->reg); ++ ++ if (factors->lock) ++ spin_unlock_irqrestore(factors->lock, flags); ++} ++EXPORT_SYMBOL(clk_sunxi_mmc_phase_control); ++ ++ ++/** + * sunxi_factors_clk_setup() - Setup function for factor clocks + */ + +diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig +index 8aaf8c1..d50ac1c 100644 +--- a/drivers/mmc/host/Kconfig ++++ b/drivers/mmc/host/Kconfig +@@ -694,3 +694,10 @@ config MMC_REALTEK_PCI + help + Say Y here to include driver code to support SD/MMC card interface + of Realtek PCI-E card reader ++ ++config MMC_SUNXI ++ tristate "Allwinner sunxi SD/MMC Host Controller support" ++ depends on ARCH_SUNXI ++ help ++ This selects support for the SD/MMC Host Controller on ++ Allwinner sunxi SoCs. +diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile +index 0c8aa5e..c706c0f 100644 +--- a/drivers/mmc/host/Makefile ++++ b/drivers/mmc/host/Makefile +@@ -53,6 +53,8 @@ obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o + + obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o + ++obj-$(CONFIG_MMC_SUNXI) += sunxi-mmc.o ++ + obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o + obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o + obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o +diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c +new file mode 100644 +index 0000000..f1de52c +--- /dev/null ++++ b/drivers/mmc/host/sunxi-mmc.c +@@ -0,0 +1,1125 @@ ++/* ++ * Driver for sunxi SD/MMC host controllers ++ * (C) Copyright 2007-2011 Reuuimlla Technology Co., Ltd. ++ * (C) Copyright 2007-2011 Aaron Maoye ++ * (C) Copyright 2013-2014 O2S GmbH ++ * (C) Copyright 2013-2014 David Lanzendörfer ++ * (C) Copyright 2013-2014 Hans de Goede ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License as ++ * published by the Free Software Foundation; either version 2 of ++ * the License, or (at your option) any later version. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++#include ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++#include ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++/* register offset definitions */ ++#define SDXC_REG_GCTRL (0x00) /* SMC Global Control Register */ ++#define SDXC_REG_CLKCR (0x04) /* SMC Clock Control Register */ ++#define SDXC_REG_TMOUT (0x08) /* SMC Time Out Register */ ++#define SDXC_REG_WIDTH (0x0C) /* SMC Bus Width Register */ ++#define SDXC_REG_BLKSZ (0x10) /* SMC Block Size Register */ ++#define SDXC_REG_BCNTR (0x14) /* SMC Byte Count Register */ ++#define SDXC_REG_CMDR (0x18) /* SMC Command Register */ ++#define SDXC_REG_CARG (0x1C) /* SMC Argument Register */ ++#define SDXC_REG_RESP0 (0x20) /* SMC Response Register 0 */ ++#define SDXC_REG_RESP1 (0x24) /* SMC Response Register 1 */ ++#define SDXC_REG_RESP2 (0x28) /* SMC Response Register 2 */ ++#define SDXC_REG_RESP3 (0x2C) /* SMC Response Register 3 */ ++#define SDXC_REG_IMASK (0x30) /* SMC Interrupt Mask Register */ ++#define SDXC_REG_MISTA (0x34) /* SMC Masked Interrupt Status Register */ ++#define SDXC_REG_RINTR (0x38) /* SMC Raw Interrupt Status Register */ ++#define SDXC_REG_STAS (0x3C) /* SMC Status Register */ ++#define SDXC_REG_FTRGL (0x40) /* SMC FIFO Threshold Watermark Registe */ ++#define SDXC_REG_FUNS (0x44) /* SMC Function Select Register */ ++#define SDXC_REG_CBCR (0x48) /* SMC CIU Byte Count Register */ ++#define SDXC_REG_BBCR (0x4C) /* SMC BIU Byte Count Register */ ++#define SDXC_REG_DBGC (0x50) /* SMC Debug Enable Register */ ++#define SDXC_REG_HWRST (0x78) /* SMC Card Hardware Reset for Register */ ++#define SDXC_REG_DMAC (0x80) /* SMC IDMAC Control Register */ ++#define SDXC_REG_DLBA (0x84) /* SMC IDMAC Descriptor List Base Addre */ ++#define SDXC_REG_IDST (0x88) /* SMC IDMAC Status Register */ ++#define SDXC_REG_IDIE (0x8C) /* SMC IDMAC Interrupt Enable Register */ ++#define SDXC_REG_CHDA (0x90) ++#define SDXC_REG_CBDA (0x94) ++ ++#define mci_readl(host, reg) \ ++ readl((host)->reg_base + SDXC_##reg) ++#define mci_writel(host, reg, value) \ ++ writel((value), (host)->reg_base + SDXC_##reg) ++ ++/* global control register bits */ ++#define SDXC_SOFT_RESET BIT(0) ++#define SDXC_FIFO_RESET BIT(1) ++#define SDXC_DMA_RESET BIT(2) ++#define SDXC_INTERRUPT_ENABLE_BIT BIT(4) ++#define SDXC_DMA_ENABLE_BIT BIT(5) ++#define SDXC_DEBOUNCE_ENABLE_BIT BIT(8) ++#define SDXC_POSEDGE_LATCH_DATA BIT(9) ++#define SDXC_DDR_MODE BIT(10) ++#define SDXC_MEMORY_ACCESS_DONE BIT(29) ++#define SDXC_ACCESS_DONE_DIRECT BIT(30) ++#define SDXC_ACCESS_BY_AHB BIT(31) ++#define SDXC_ACCESS_BY_DMA (0 << 31) ++#define SDXC_HARDWARE_RESET \ ++ (SDXC_SOFT_RESET | SDXC_FIFO_RESET | SDXC_DMA_RESET) ++ ++/* clock control bits */ ++#define SDXC_CARD_CLOCK_ON BIT(16) ++#define SDXC_LOW_POWER_ON BIT(17) ++ ++/* bus width */ ++#define SDXC_WIDTH1 0 ++#define SDXC_WIDTH4 1 ++#define SDXC_WIDTH8 2 ++ ++/* smc command bits */ ++#define SDXC_RESP_EXPIRE BIT(6) ++#define SDXC_LONG_RESPONSE BIT(7) ++#define SDXC_CHECK_RESPONSE_CRC BIT(8) ++#define SDXC_DATA_EXPIRE BIT(9) ++#define SDXC_WRITE BIT(10) ++#define SDXC_SEQUENCE_MODE BIT(11) ++#define SDXC_SEND_AUTO_STOP BIT(12) ++#define SDXC_WAIT_PRE_OVER BIT(13) ++#define SDXC_STOP_ABORT_CMD BIT(14) ++#define SDXC_SEND_INIT_SEQUENCE BIT(15) ++#define SDXC_UPCLK_ONLY BIT(21) ++#define SDXC_READ_CEATA_DEV BIT(22) ++#define SDXC_CCS_EXPIRE BIT(23) ++#define SDXC_ENABLE_BIT_BOOT BIT(24) ++#define SDXC_ALT_BOOT_OPTIONS BIT(25) ++#define SDXC_BOOT_ACK_EXPIRE BIT(26) ++#define SDXC_BOOT_ABORT BIT(27) ++#define SDXC_VOLTAGE_SWITCH BIT(28) ++#define SDXC_USE_HOLD_REGISTER BIT(29) ++#define SDXC_START BIT(31) ++ ++/* interrupt bits */ ++#define SDXC_RESP_ERROR BIT(1) ++#define SDXC_COMMAND_DONE BIT(2) ++#define SDXC_DATA_OVER BIT(3) ++#define SDXC_TX_DATA_REQUEST BIT(4) ++#define SDXC_RX_DATA_REQUEST BIT(5) ++#define SDXC_RESP_CRC_ERROR BIT(6) ++#define SDXC_DATA_CRC_ERROR BIT(7) ++#define SDXC_RESP_TIMEOUT BIT(8) ++#define SDXC_DATA_TIMEOUT BIT(9) ++#define SDXC_VOLTAGE_CHANGE_DONE BIT(10) ++#define SDXC_FIFO_RUN_ERROR BIT(11) ++#define SDXC_HARD_WARE_LOCKED BIT(12) ++#define SDXC_START_BIT_ERROR BIT(13) ++#define SDXC_AUTO_COMMAND_DONE BIT(14) ++#define SDXC_END_BIT_ERROR BIT(15) ++#define SDXC_SDIO_INTERRUPT BIT(16) ++#define SDXC_CARD_INSERT BIT(30) ++#define SDXC_CARD_REMOVE BIT(31) ++#define SDXC_INTERRUPT_ERROR_BIT \ ++ (SDXC_RESP_ERROR | SDXC_RESP_CRC_ERROR | SDXC_DATA_CRC_ERROR | \ ++ SDXC_RESP_TIMEOUT | SDXC_DATA_TIMEOUT | SDXC_FIFO_RUN_ERROR | \ ++ SDXC_HARD_WARE_LOCKED | SDXC_START_BIT_ERROR | SDXC_END_BIT_ERROR) ++#define SDXC_INTERRUPT_DONE_BIT \ ++ (SDXC_AUTO_COMMAND_DONE | SDXC_DATA_OVER | \ ++ SDXC_COMMAND_DONE | SDXC_VOLTAGE_CHANGE_DONE) ++ ++/* status */ ++#define SDXC_RXWL_FLAG BIT(0) ++#define SDXC_TXWL_FLAG BIT(1) ++#define SDXC_FIFO_EMPTY BIT(2) ++#define SDXC_FIFO_FULL BIT(3) ++#define SDXC_CARD_PRESENT BIT(8) ++#define SDXC_CARD_DATA_BUSY BIT(9) ++#define SDXC_DATA_FSM_BUSY BIT(10) ++#define SDXC_DMA_REQUEST BIT(31) ++#define SDXC_FIFO_SIZE 16 ++ ++/* Function select */ ++#define SDXC_CEATA_ON (0xceaa << 16) ++#define SDXC_SEND_IRQ_RESPONSE BIT(0) ++#define SDXC_SDIO_READ_WAIT BIT(1) ++#define SDXC_ABORT_READ_DATA BIT(2) ++#define SDXC_SEND_CCSD BIT(8) ++#define SDXC_SEND_AUTO_STOPCCSD BIT(9) ++#define SDXC_CEATA_DEV_IRQ_ENABLE BIT(10) ++ ++/* IDMA controller bus mod bit field */ ++#define SDXC_IDMAC_SOFT_RESET BIT(0) ++#define SDXC_IDMAC_FIX_BURST BIT(1) ++#define SDXC_IDMAC_IDMA_ON BIT(7) ++#define SDXC_IDMAC_REFETCH_DES BIT(31) ++ ++/* IDMA status bit field */ ++#define SDXC_IDMAC_TRANSMIT_INTERRUPT BIT(0) ++#define SDXC_IDMAC_RECEIVE_INTERRUPT BIT(1) ++#define SDXC_IDMAC_FATAL_BUS_ERROR BIT(2) ++#define SDXC_IDMAC_DESTINATION_INVALID BIT(4) ++#define SDXC_IDMAC_CARD_ERROR_SUM BIT(5) ++#define SDXC_IDMAC_NORMAL_INTERRUPT_SUM BIT(8) ++#define SDXC_IDMAC_ABNORMAL_INTERRUPT_SUM BIT(9) ++#define SDXC_IDMAC_HOST_ABORT_INTERRUPT BIT(10) ++#define SDXC_IDMAC_IDLE (0 << 13) ++#define SDXC_IDMAC_SUSPEND (1 << 13) ++#define SDXC_IDMAC_DESC_READ (2 << 13) ++#define SDXC_IDMAC_DESC_CHECK (3 << 13) ++#define SDXC_IDMAC_READ_REQUEST_WAIT (4 << 13) ++#define SDXC_IDMAC_WRITE_REQUEST_WAIT (5 << 13) ++#define SDXC_IDMAC_READ (6 << 13) ++#define SDXC_IDMAC_WRITE (7 << 13) ++#define SDXC_IDMAC_DESC_CLOSE (8 << 13) ++ ++/* ++* If the idma-des-size-bits of property is ie 13, bufsize bits are: ++* Bits 0-12: buf1 size ++* Bits 13-25: buf2 size ++* Bits 26-31: not used ++* Since we only ever set buf1 size, we can simply store it directly. ++*/ ++#define SDXC_IDMAC_DES0_DIC BIT(1) /* disable interrupt on completion */ ++#define SDXC_IDMAC_DES0_LD BIT(2) /* last descriptor */ ++#define SDXC_IDMAC_DES0_FD BIT(3) /* first descriptor */ ++#define SDXC_IDMAC_DES0_CH BIT(4) /* chain mode */ ++#define SDXC_IDMAC_DES0_ER BIT(5) /* end of ring */ ++#define SDXC_IDMAC_DES0_CES BIT(30) /* card error summary */ ++#define SDXC_IDMAC_DES0_OWN BIT(31) /* 1-idma owns it, 0-host owns it */ ++ ++struct sunxi_idma_des { ++ u32 config; ++ u32 buf_size; ++ u32 buf_addr_ptr1; ++ u32 buf_addr_ptr2; ++}; ++ ++struct sunxi_mmc_host { ++ struct mmc_host *mmc; ++ struct regulator *vmmc; ++ struct reset_control *reset; ++ ++ /* IO mapping base */ ++ void __iomem *reg_base; ++ ++ spinlock_t lock; ++ struct tasklet_struct manual_stop_tasklet; ++ ++ /* clock management */ ++ struct clk *clk_ahb; ++ struct clk *clk_mod; ++ ++ /* ios information */ ++ u32 clk_mod_rate; ++ u32 bus_width; ++ u32 idma_des_size_bits; ++ u32 ddr; ++ u32 voltage_switching; ++ ++ /* irq */ ++ int irq; ++ u32 int_sum; ++ u32 sdio_imask; ++ ++ /* flags */ ++ bool wait_dma; ++ ++ dma_addr_t sg_dma; ++ void *sg_cpu; ++ ++ struct mmc_request *mrq; ++ struct mmc_request *manual_stop_mrq; ++ u32 ferror; ++}; ++ ++static int sunxi_mmc_init_host(struct mmc_host *mmc) ++{ ++ u32 rval; ++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); ++ int ret; ++ ++ ret = clk_prepare_enable(smc_host->clk_ahb); ++ if (ret) { ++ dev_err(mmc_dev(smc_host->mmc), "AHB clk err %d\n", ret); ++ return ret; ++ } ++ ++ ret = clk_prepare_enable(smc_host->clk_mod); ++ if (ret) { ++ dev_err(mmc_dev(smc_host->mmc), "MOD clk err %d\n", ret); ++ clk_disable_unprepare(smc_host->clk_ahb); ++ return ret; ++ } ++ ++ if (smc_host->reset) { ++ ret = reset_control_deassert(smc_host->reset); ++ if (ret) { ++ dev_err(mmc_dev(smc_host->mmc), "reset err %d\n", ret); ++ clk_disable_unprepare(smc_host->clk_ahb); ++ clk_disable_unprepare(smc_host->clk_mod); ++ return ret; ++ } ++ } ++ ++ /* reset controller */ ++ rval = mci_readl(smc_host, REG_GCTRL); ++ rval |= SDXC_HARDWARE_RESET; ++ mci_writel(smc_host, REG_GCTRL, rval); ++ ++ mci_writel(smc_host, REG_FTRGL, 0x20070008); ++ mci_writel(smc_host, REG_TMOUT, 0xffffffff); ++ mci_writel(smc_host, REG_IMASK, smc_host->sdio_imask); ++ mci_writel(smc_host, REG_RINTR, 0xffffffff); ++ mci_writel(smc_host, REG_DBGC, 0xdeb); ++ mci_writel(smc_host, REG_FUNS, SDXC_CEATA_ON); ++ mci_writel(smc_host, REG_DLBA, smc_host->sg_dma); ++ ++ rval = mci_readl(smc_host, REG_GCTRL); ++ rval |= SDXC_INTERRUPT_ENABLE_BIT; ++ rval &= ~SDXC_ACCESS_DONE_DIRECT; ++ mci_writel(smc_host, REG_GCTRL, rval); ++ ++ return 0; ++} ++ ++static void sunxi_mmc_exit_host(struct sunxi_mmc_host *smc_host) ++{ ++ mci_writel(smc_host, REG_GCTRL, SDXC_HARDWARE_RESET); ++ ++ if (smc_host->reset) ++ reset_control_assert(smc_host->reset); ++ ++ clk_disable_unprepare(smc_host->clk_ahb); ++ clk_disable_unprepare(smc_host->clk_mod); ++} ++ ++/* /\* UHS-I Operation Modes */ ++/* * DS 25MHz 12.5MB/s 3.3V */ ++/* * HS 50MHz 25MB/s 3.3V */ ++/* * SDR12 25MHz 12.5MB/s 1.8V */ ++/* * SDR25 50MHz 25MB/s 1.8V */ ++/* * SDR50 100MHz 50MB/s 1.8V */ ++/* * SDR104 208MHz 104MB/s 1.8V */ ++/* * DDR50 50MHz 50MB/s 1.8V */ ++/* * MMC Operation Modes */ ++/* * DS 26MHz 26MB/s 3/1.8/1.2V */ ++/* * HS 52MHz 52MB/s 3/1.8/1.2V */ ++/* * HSDDR 52MHz 104MB/s 3/1.8/1.2V */ ++/* * HS200 200MHz 200MB/s 1.8/1.2V */ ++/* * */ ++/* * Spec. Timing */ ++/* * SD3.0 */ ++/* * Fcclk Tcclk Fsclk Tsclk Tis Tih odly RTis RTih */ ++/* * 400K 2.5us 24M 41ns 5ns 5ns 1 2209ns 41ns */ ++/* * 25M 40ns 600M 1.67ns 5ns 5ns 3 14.99ns 5.01ns */ ++/* * 50M 20ns 600M 1.67ns 6ns 2ns 3 14.99ns 5.01ns */ ++/* * 50MDDR 20ns 600M 1.67ns 6ns 0.8ns 2 6.67ns 3.33ns */ ++/* * 104M 9.6ns 600M 1.67ns 3ns 0.8ns 1 7.93ns 1.67ns */ ++/* * 208M 4.8ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */ ++ ++/* * 25M 40ns 300M 3.33ns 5ns 5ns 2 13.34ns 6.66ns */ ++/* * 50M 20ns 300M 3.33ns 6ns 2ns 2 13.34ns 6.66ns */ ++/* * 50MDDR 20ns 300M 3.33ns 6ns 0.8ns 1 6.67ns 3.33ns */ ++/* * 104M 9.6ns 300M 3.33ns 3ns 0.8ns 0 7.93ns 1.67ns */ ++/* * 208M 4.8ns 300M 3.33ns 1.4ns 0.8ns 0 3.13ns 1.67ns */ ++ ++/* * eMMC4.5 */ ++/* * 400K 2.5us 24M 41ns 3ns 3ns 1 2209ns 41ns */ ++/* * 25M 40ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */ ++/* * 50M 20ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */ ++/* * 50MDDR 20ns 600M 1.67ns 2.5ns 2.5ns 2 6.67ns 3.33ns */ ++/* * 200M 5ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */ ++/* *\/ */ ++ ++static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, ++ struct mmc_data *data) ++{ ++ struct sunxi_idma_des *pdes = (struct sunxi_idma_des *)host->sg_cpu; ++ struct sunxi_idma_des *pdes_pa = (struct sunxi_idma_des *)host->sg_dma; ++ int i, max_len = (1 << host->idma_des_size_bits); ++ ++ for (i = 0; i < data->sg_len; i++) { ++ pdes[i].config = SDXC_IDMAC_DES0_CH | SDXC_IDMAC_DES0_OWN | ++ SDXC_IDMAC_DES0_DIC; ++ ++ if (data->sg[i].length == max_len) ++ pdes[i].buf_size = 0; /* 0 == max_len */ ++ else ++ pdes[i].buf_size = data->sg[i].length; ++ ++ pdes[i].buf_addr_ptr1 = sg_dma_address(&data->sg[i]); ++ pdes[i].buf_addr_ptr2 = (u32)&pdes_pa[i + 1]; ++ } ++ ++ pdes[0].config |= SDXC_IDMAC_DES0_FD; ++ pdes[i - 1].config = SDXC_IDMAC_DES0_OWN | SDXC_IDMAC_DES0_LD; ++ ++ /* ++ * Avoid the io-store starting the idmac hitting io-mem before the ++ * descriptors hit the main-mem. ++ */ ++ wmb(); ++} ++ ++static enum dma_data_direction sunxi_mmc_get_dma_dir(struct mmc_data *data) ++{ ++ if (data->flags & MMC_DATA_WRITE) ++ return DMA_TO_DEVICE; ++ else ++ return DMA_FROM_DEVICE; ++} ++ ++static int sunxi_mmc_map_dma(struct sunxi_mmc_host *smc_host, ++ struct mmc_data *data) ++{ ++ u32 i, dma_len; ++ struct scatterlist *sg; ++ ++ dma_len = dma_map_sg(mmc_dev(smc_host->mmc), data->sg, data->sg_len, ++ sunxi_mmc_get_dma_dir(data)); ++ if (dma_len == 0) { ++ dev_err(mmc_dev(smc_host->mmc), "dma_map_sg failed\n"); ++ return -ENOMEM; ++ } ++ ++ for_each_sg(data->sg, sg, data->sg_len, i) { ++ if (sg->offset & 3 || sg->length & 3) { ++ dev_err(mmc_dev(smc_host->mmc), ++ "unaligned scatterlist: os %x length %d\n", ++ sg->offset, sg->length); ++ return -EINVAL; ++ } ++ } ++ ++ return 0; ++} ++ ++static void sunxi_mmc_start_dma(struct sunxi_mmc_host *smc_host, ++ struct mmc_data *data) ++{ ++ u32 rval; ++ ++ sunxi_mmc_init_idma_des(smc_host, data); ++ ++ rval = mci_readl(smc_host, REG_GCTRL); ++ rval |= SDXC_DMA_ENABLE_BIT; ++ mci_writel(smc_host, REG_GCTRL, rval); ++ rval |= SDXC_DMA_RESET; ++ mci_writel(smc_host, REG_GCTRL, rval); ++ ++ mci_writel(smc_host, REG_DMAC, SDXC_IDMAC_SOFT_RESET); ++ ++ if (!(data->flags & MMC_DATA_WRITE)) ++ mci_writel(smc_host, REG_IDIE, SDXC_IDMAC_RECEIVE_INTERRUPT); ++ ++ mci_writel(smc_host, REG_DMAC, ++ SDXC_IDMAC_FIX_BURST | SDXC_IDMAC_IDMA_ON); ++} ++ ++static void sunxi_mmc_send_manual_stop(struct sunxi_mmc_host *host, ++ struct mmc_request *req) ++{ ++ u32 cmd_val = SDXC_START | SDXC_RESP_EXPIRE | SDXC_STOP_ABORT_CMD ++ | SDXC_CHECK_RESPONSE_CRC | MMC_STOP_TRANSMISSION; ++ u32 ri = 0; ++ unsigned long expire = jiffies + msecs_to_jiffies(1000); ++ ++ mci_writel(host, REG_CARG, 0); ++ mci_writel(host, REG_CMDR, cmd_val); ++ ++ do { ++ ri = mci_readl(host, REG_RINTR); ++ } while (!(ri & (SDXC_COMMAND_DONE | SDXC_INTERRUPT_ERROR_BIT)) && ++ time_before(jiffies, expire)); ++ ++ if (ri & SDXC_INTERRUPT_ERROR_BIT) { ++ dev_err(mmc_dev(host->mmc), "send stop command failed\n"); ++ if (req->stop) ++ req->stop->resp[0] = -ETIMEDOUT; ++ } else { ++ if (req->stop) ++ req->stop->resp[0] = mci_readl(host, REG_RESP0); ++ } ++ ++ mci_writel(host, REG_RINTR, 0xffff); ++} ++ ++static void sunxi_mmc_dump_errinfo(struct sunxi_mmc_host *smc_host) ++{ ++ struct mmc_command *cmd = smc_host->mrq->cmd; ++ struct mmc_data *data = smc_host->mrq->data; ++ ++ /* For some cmds timeout is normal with sd/mmc cards */ ++ if ((smc_host->int_sum & SDXC_INTERRUPT_ERROR_BIT) == ++ SDXC_RESP_TIMEOUT && (cmd->opcode == SD_IO_SEND_OP_COND || ++ cmd->opcode == SD_IO_RW_DIRECT)) ++ return; ++ ++ dev_err(mmc_dev(smc_host->mmc), ++ "smc %d err, cmd %d,%s%s%s%s%s%s%s%s%s%s !!\n", ++ smc_host->mmc->index, cmd->opcode, ++ data ? (data->flags & MMC_DATA_WRITE ? " WR" : " RD") : "", ++ smc_host->int_sum & SDXC_RESP_ERROR ? " RE" : "", ++ smc_host->int_sum & SDXC_RESP_CRC_ERROR ? " RCE" : "", ++ smc_host->int_sum & SDXC_DATA_CRC_ERROR ? " DCE" : "", ++ smc_host->int_sum & SDXC_RESP_TIMEOUT ? " RTO" : "", ++ smc_host->int_sum & SDXC_DATA_TIMEOUT ? " DTO" : "", ++ smc_host->int_sum & SDXC_FIFO_RUN_ERROR ? " FE" : "", ++ smc_host->int_sum & SDXC_HARD_WARE_LOCKED ? " HL" : "", ++ smc_host->int_sum & SDXC_START_BIT_ERROR ? " SBE" : "", ++ smc_host->int_sum & SDXC_END_BIT_ERROR ? " EBE" : "" ++ ); ++} ++ ++/* Called in interrupt context! */ ++static int sunxi_mmc_finalize_request(struct sunxi_mmc_host *host) ++{ ++ struct mmc_request *mrq = host->mrq; ++ ++ mci_writel(host, REG_IMASK, host->sdio_imask); ++ mci_writel(host, REG_IDIE, 0); ++ ++ if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT) { ++ sunxi_mmc_dump_errinfo(host); ++ mrq->cmd->error = -ETIMEDOUT; ++ ++ if (mrq->data) ++ mrq->data->error = -ETIMEDOUT; ++ ++ if (mrq->stop) ++ mrq->stop->error = -ETIMEDOUT; ++ } else { ++ if (mrq->cmd->flags & MMC_RSP_136) { ++ mrq->cmd->resp[0] = mci_readl(host, REG_RESP3); ++ mrq->cmd->resp[1] = mci_readl(host, REG_RESP2); ++ mrq->cmd->resp[2] = mci_readl(host, REG_RESP1); ++ mrq->cmd->resp[3] = mci_readl(host, REG_RESP0); ++ } else { ++ mrq->cmd->resp[0] = mci_readl(host, REG_RESP0); ++ } ++ ++ if (mrq->data) ++ mrq->data->bytes_xfered = ++ mrq->data->blocks * mrq->data->blksz; ++ } ++ ++ if (mrq->data) { ++ struct mmc_data *data = mrq->data; ++ u32 rval; ++ ++ mci_writel(host, REG_IDST, 0x337); ++ mci_writel(host, REG_DMAC, 0); ++ rval = mci_readl(host, REG_GCTRL); ++ rval |= SDXC_DMA_RESET; ++ mci_writel(host, REG_GCTRL, rval); ++ rval &= ~SDXC_DMA_ENABLE_BIT; ++ mci_writel(host, REG_GCTRL, rval); ++ rval |= SDXC_FIFO_RESET; ++ mci_writel(host, REG_GCTRL, rval); ++ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, ++ sunxi_mmc_get_dma_dir(data)); ++ } ++ ++ mci_writel(host, REG_RINTR, 0xffff); ++ ++ dev_dbg(mmc_dev(host->mmc), "req done, resp %08x %08x %08x %08x\n", ++ mrq->cmd->resp[0], mrq->cmd->resp[1], ++ mrq->cmd->resp[2], mrq->cmd->resp[3]); ++ ++ host->mrq = NULL; ++ host->int_sum = 0; ++ host->wait_dma = false; ++ ++ if (mrq->data && mrq->data->error) { ++ host->manual_stop_mrq = mrq; ++ tasklet_schedule(&host->manual_stop_tasklet); ++ return -EBUSY; ++ } ++ ++ return 0; ++} ++ ++static irqreturn_t sunxi_mmc_irq(int irq, void *dev_id) ++{ ++ struct sunxi_mmc_host *host = dev_id; ++ struct mmc_request *mrq; ++ bool finalize = false; ++ bool complete = false; ++ bool sdio_int = false; ++ u32 msk_int; ++ u32 idma_int; ++ ++ spin_lock(&host->lock); ++ ++ idma_int = mci_readl(host, REG_IDST); ++ msk_int = mci_readl(host, REG_MISTA); ++ ++ dev_dbg(mmc_dev(host->mmc), "irq: rq %p mi %08x idi %08x\n", ++ host->mrq, msk_int, idma_int); ++ ++ mrq = host->mrq; ++ if (mrq) { ++ if (idma_int & SDXC_IDMAC_RECEIVE_INTERRUPT) ++ host->wait_dma = false; ++ ++ host->int_sum |= msk_int; ++ ++ /* Wait for COMMAND_DONE on RESPONSE_TIMEOUT before finalize */ ++ if ((host->int_sum & SDXC_RESP_TIMEOUT) && ++ !(host->int_sum & SDXC_COMMAND_DONE)) ++ mci_writel(host, REG_IMASK, ++ host->sdio_imask | SDXC_COMMAND_DONE); ++ /* Don't wait for dma on error */ ++ else if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT) ++ finalize = true; ++ else if ((host->int_sum & SDXC_INTERRUPT_DONE_BIT) && ++ !host->wait_dma) ++ finalize = true; ++ } ++ ++ if (msk_int & SDXC_SDIO_INTERRUPT) ++ sdio_int = true; ++ ++ mci_writel(host, REG_RINTR, msk_int); ++ mci_writel(host, REG_IDST, idma_int); ++ ++ if (finalize) { ++ if (sunxi_mmc_finalize_request(host) == 0) ++ complete = true; ++ } ++ ++ spin_unlock(&host->lock); ++ ++ if (complete) ++ mmc_request_done(host->mmc, mrq); ++ ++ if (sdio_int) ++ mmc_signal_sdio_irq(host->mmc); ++ ++ return IRQ_HANDLED; ++} ++ ++static void sunxi_mmc_manual_stop_tasklet(unsigned long data) ++{ ++ struct sunxi_mmc_host *host = (struct sunxi_mmc_host *) data; ++ struct mmc_request *mrq; ++ unsigned long iflags; ++ ++ spin_lock_irqsave(&host->lock, iflags); ++ mrq = host->manual_stop_mrq; ++ spin_unlock_irqrestore(&host->lock, iflags); ++ ++ if (!mrq) { ++ dev_err(mmc_dev(host->mmc), "no request for manual stop\n"); ++ return; ++ } ++ ++ dev_err(mmc_dev(host->mmc), "data error, sending stop command\n"); ++ sunxi_mmc_send_manual_stop(host, mrq); ++ ++ spin_lock_irqsave(&host->lock, iflags); ++ host->manual_stop_mrq = NULL; ++ spin_unlock_irqrestore(&host->lock, iflags); ++ ++ mmc_request_done(host->mmc, mrq); ++} ++ ++static void sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en) ++{ ++ unsigned long expire = jiffies + msecs_to_jiffies(2000); ++ u32 rval; ++ ++ rval = mci_readl(host, REG_CLKCR); ++ rval &= ~(SDXC_CARD_CLOCK_ON | SDXC_LOW_POWER_ON); ++ ++ if (oclk_en) ++ rval |= SDXC_CARD_CLOCK_ON; ++ ++ mci_writel(host, REG_CLKCR, rval); ++ ++ rval = SDXC_START | SDXC_UPCLK_ONLY | SDXC_WAIT_PRE_OVER; ++ if (host->voltage_switching) ++ rval |= SDXC_VOLTAGE_SWITCH; ++ mci_writel(host, REG_CMDR, rval); ++ ++ do { ++ rval = mci_readl(host, REG_CMDR); ++ } while (time_before(jiffies, expire) && (rval & SDXC_START)); ++ ++ if (rval & SDXC_START) { ++ dev_err(mmc_dev(host->mmc), "fatal err update clk timeout\n"); ++ host->ferror = 1; ++ } ++} ++ ++static void sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *smc_host, ++ unsigned int rate) ++{ ++ u32 newrate, oclk_dly, rval, sclk_dly, src_clk; ++ struct clk_hw *hw = __clk_get_hw(smc_host->clk_mod); ++ ++ newrate = clk_round_rate(smc_host->clk_mod, rate); ++ if (smc_host->clk_mod_rate == newrate) { ++ dev_dbg(mmc_dev(smc_host->mmc), "clk already %d, rounded %d\n", ++ rate, newrate); ++ return; ++ } ++ ++ dev_dbg(mmc_dev(smc_host->mmc), "setting clk to %d, rounded %d\n", ++ rate, newrate); ++ ++ /* setting clock rate */ ++ clk_set_rate(smc_host->clk_mod, newrate); ++ smc_host->clk_mod_rate = clk_get_rate(smc_host->clk_mod); ++ dev_dbg(mmc_dev(smc_host->mmc), "clk is now %d\n", ++ smc_host->clk_mod_rate); ++ ++ sunxi_mmc_oclk_onoff(smc_host, 0); ++ /* clear internal divider */ ++ rval = mci_readl(smc_host, REG_CLKCR); ++ rval &= ~0xff; ++ mci_writel(smc_host, REG_CLKCR, rval); ++ ++ /* determine delays */ ++ if (rate <= 400000) { ++ oclk_dly = 0; ++ sclk_dly = 7; ++ } else if (rate <= 25000000) { ++ oclk_dly = 0; ++ sclk_dly = 5; ++ } else if (rate <= 50000000) { ++ if (smc_host->ddr) { ++ oclk_dly = 2; ++ sclk_dly = 4; ++ } else { ++ oclk_dly = 3; ++ sclk_dly = 5; ++ } ++ } else { ++ /* rate > 50000000 */ ++ oclk_dly = 2; ++ sclk_dly = 4; ++ } ++ ++ src_clk = clk_get_rate(clk_get_parent(smc_host->clk_mod)); ++ if (src_clk >= 300000000 && src_clk <= 400000000) { ++ if (oclk_dly) ++ oclk_dly--; ++ if (sclk_dly) ++ sclk_dly--; ++ } ++ ++ clk_sunxi_mmc_phase_control(hw, sclk_dly, oclk_dly); ++ sunxi_mmc_oclk_onoff(smc_host, 1); ++ ++ /* oclk_onoff sets various irq status bits, clear these */ ++ mci_writel(smc_host, REG_RINTR, ++ mci_readl(smc_host, REG_RINTR) & ~SDXC_SDIO_INTERRUPT); ++} ++ ++static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) ++{ ++ struct sunxi_mmc_host *host = mmc_priv(mmc); ++ u32 rval; ++ s32 err; ++ ++ /* Set the power state */ ++ switch (ios->power_mode) { ++ case MMC_POWER_ON: ++ break; ++ ++ case MMC_POWER_UP: ++ if (!IS_ERR(host->vmmc)) { ++ mmc_regulator_set_ocr(host->mmc, host->vmmc, ios->vdd); ++ udelay(200); ++ } ++ ++ err = sunxi_mmc_init_host(mmc); ++ if (err) { ++ host->ferror = 1; ++ return; ++ } ++ ++ enable_irq(host->irq); ++ ++ dev_dbg(mmc_dev(host->mmc), "power on!\n"); ++ host->ferror = 0; ++ break; ++ ++ case MMC_POWER_OFF: ++ dev_dbg(mmc_dev(host->mmc), "power off!\n"); ++ disable_irq(host->irq); ++ sunxi_mmc_exit_host(host); ++ if (!IS_ERR(host->vmmc)) ++ mmc_regulator_set_ocr(host->mmc, host->vmmc, 0); ++ ++ host->ferror = 0; ++ break; ++ } ++ ++ /* set bus width */ ++ switch (ios->bus_width) { ++ case MMC_BUS_WIDTH_1: ++ mci_writel(host, REG_WIDTH, SDXC_WIDTH1); ++ host->bus_width = 1; ++ break; ++ case MMC_BUS_WIDTH_4: ++ mci_writel(host, REG_WIDTH, SDXC_WIDTH4); ++ host->bus_width = 4; ++ break; ++ case MMC_BUS_WIDTH_8: ++ mci_writel(host, REG_WIDTH, SDXC_WIDTH8); ++ host->bus_width = 8; ++ break; ++ } ++ ++ /* set ddr mode */ ++ rval = mci_readl(host, REG_GCTRL); ++ if (ios->timing == MMC_TIMING_UHS_DDR50) { ++ rval |= SDXC_DDR_MODE; ++ host->ddr = 1; ++ } else { ++ rval &= ~SDXC_DDR_MODE; ++ host->ddr = 0; ++ } ++ mci_writel(host, REG_GCTRL, rval); ++ ++ /* set up clock */ ++ if (ios->clock && ios->power_mode) { ++ dev_dbg(mmc_dev(host->mmc), "ios->clock: %d\n", ios->clock); ++ sunxi_mmc_clk_set_rate(host, ios->clock); ++ usleep_range(50000, 55000); ++ } ++} ++ ++static void sunxi_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) ++{ ++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); ++ unsigned long flags; ++ u32 imask; ++ ++ spin_lock_irqsave(&smc_host->lock, flags); ++ ++ imask = mci_readl(smc_host, REG_IMASK); ++ if (enable) { ++ smc_host->sdio_imask = SDXC_SDIO_INTERRUPT; ++ imask |= SDXC_SDIO_INTERRUPT; ++ } else { ++ smc_host->sdio_imask = 0; ++ imask &= ~SDXC_SDIO_INTERRUPT; ++ } ++ mci_writel(smc_host, REG_IMASK, imask); ++ spin_unlock_irqrestore(&smc_host->lock, flags); ++} ++ ++static void sunxi_mmc_hw_reset(struct mmc_host *mmc) ++{ ++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc); ++ mci_writel(smc_host, REG_HWRST, 0); ++ udelay(10); ++ mci_writel(smc_host, REG_HWRST, 1); ++ udelay(300); ++} ++ ++static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) ++{ ++ struct sunxi_mmc_host *host = mmc_priv(mmc); ++ struct mmc_command *cmd = mrq->cmd; ++ struct mmc_data *data = mrq->data; ++ unsigned long iflags; ++ u32 imask = SDXC_INTERRUPT_ERROR_BIT; ++ u32 cmd_val = SDXC_START | (cmd->opcode & 0x3f); ++ int ret; ++ ++ if (!mmc_gpio_get_cd(mmc) || host->ferror) { ++ dev_dbg(mmc_dev(host->mmc), "no medium present\n"); ++ mrq->cmd->error = -ENOMEDIUM; ++ mmc_request_done(mmc, mrq); ++ return; ++ } ++ ++ if (data) { ++ ret = sunxi_mmc_map_dma(host, data); ++ if (ret < 0) { ++ dev_err(mmc_dev(host->mmc), "map DMA failed\n"); ++ cmd->error = ret; ++ cmd->data->error = ret; ++ mmc_request_done(host->mmc, mrq); ++ return; ++ } ++ } ++ ++ if (cmd->opcode == MMC_GO_IDLE_STATE) { ++ cmd_val |= SDXC_SEND_INIT_SEQUENCE; ++ imask |= SDXC_COMMAND_DONE; ++ } ++ ++ if (cmd->opcode == SD_SWITCH_VOLTAGE) { ++ cmd_val |= SDXC_VOLTAGE_SWITCH; ++ imask |= SDXC_VOLTAGE_CHANGE_DONE; ++ host->voltage_switching = 1; ++ sunxi_mmc_oclk_onoff(host, 1); ++ } ++ ++ if (cmd->flags & MMC_RSP_PRESENT) { ++ cmd_val |= SDXC_RESP_EXPIRE; ++ if (cmd->flags & MMC_RSP_136) ++ cmd_val |= SDXC_LONG_RESPONSE; ++ if (cmd->flags & MMC_RSP_CRC) ++ cmd_val |= SDXC_CHECK_RESPONSE_CRC; ++ ++ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC) { ++ cmd_val |= SDXC_DATA_EXPIRE | SDXC_WAIT_PRE_OVER; ++ if (cmd->data->flags & MMC_DATA_STREAM) { ++ imask |= SDXC_AUTO_COMMAND_DONE; ++ cmd_val |= SDXC_SEQUENCE_MODE | ++ SDXC_SEND_AUTO_STOP; ++ } ++ ++ if (cmd->data->stop) { ++ imask |= SDXC_AUTO_COMMAND_DONE; ++ cmd_val |= SDXC_SEND_AUTO_STOP; ++ } else { ++ imask |= SDXC_DATA_OVER; ++ } ++ ++ if (cmd->data->flags & MMC_DATA_WRITE) ++ cmd_val |= SDXC_WRITE; ++ else ++ host->wait_dma = true; ++ } else { ++ imask |= SDXC_COMMAND_DONE; ++ } ++ } else { ++ imask |= SDXC_COMMAND_DONE; ++ } ++ ++ dev_dbg(mmc_dev(host->mmc), "cmd %d(%08x) arg %x ie 0x%08x len %d\n", ++ cmd_val & 0x3f, cmd_val, cmd->arg, imask, ++ mrq->data ? mrq->data->blksz * mrq->data->blocks : 0); ++ ++ spin_lock_irqsave(&host->lock, iflags); ++ ++ if (host->mrq || host->manual_stop_mrq) { ++ spin_unlock_irqrestore(&host->lock, iflags); ++ ++ if (data) ++ dma_unmap_sg(mmc_dev(host->mmc), data->sg, ++ data->sg_len, sunxi_mmc_get_dma_dir(data)); ++ ++ dev_err(mmc_dev(host->mmc), "request already pending\n"); ++ mrq->cmd->error = -EBUSY; ++ mmc_request_done(host->mmc, mrq); ++ return; ++ } ++ ++ if (data) { ++ mci_writel(host, REG_BLKSZ, data->blksz); ++ mci_writel(host, REG_BCNTR, data->blksz * data->blocks); ++ sunxi_mmc_start_dma(host, data); ++ } ++ ++ host->mrq = mrq; ++ mci_writel(host, REG_IMASK, host->sdio_imask | imask); ++ mci_writel(host, REG_CARG, cmd->arg); ++ mci_writel(host, REG_CMDR, cmd_val); ++ ++ spin_unlock_irqrestore(&host->lock, iflags); ++} ++ ++static const struct of_device_id sunxi_mmc_of_match[] = { ++ { .compatible = "allwinner,sun4i-a10-mmc", }, ++ { .compatible = "allwinner,sun5i-a13-mmc", }, ++ { /* sentinel */ } ++}; ++MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); ++ ++static struct mmc_host_ops sunxi_mmc_ops = { ++ .request = sunxi_mmc_request, ++ .set_ios = sunxi_mmc_set_ios, ++ .get_ro = mmc_gpio_get_ro, ++ .get_cd = mmc_gpio_get_cd, ++ .enable_sdio_irq = sunxi_mmc_enable_sdio_irq, ++ .hw_reset = sunxi_mmc_hw_reset, ++}; ++ ++static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, ++ struct platform_device *pdev) ++{ ++ struct device_node *np = pdev->dev.of_node; ++ int ret; ++ ++ if (of_device_is_compatible(np, "allwinner,sun4i-a10-mmc")) ++ host->idma_des_size_bits = 13; ++ else ++ host->idma_des_size_bits = 16; ++ ++ host->vmmc = devm_regulator_get_optional(&pdev->dev, "vmmc"); ++ if (IS_ERR(host->vmmc) && PTR_ERR(host->vmmc) == -EPROBE_DEFER) ++ return -EPROBE_DEFER; ++ ++ host->reg_base = devm_ioremap_resource(&pdev->dev, ++ platform_get_resource(pdev, IORESOURCE_MEM, 0)); ++ if (IS_ERR(host->reg_base)) ++ return PTR_ERR(host->reg_base); ++ ++ host->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); ++ if (IS_ERR(host->clk_ahb)) { ++ dev_err(&pdev->dev, "Could not get ahb clock\n"); ++ return PTR_ERR(host->clk_ahb); ++ } ++ ++ host->clk_mod = devm_clk_get(&pdev->dev, "mod"); ++ if (IS_ERR(host->clk_mod)) { ++ dev_err(&pdev->dev, "Could not get mod clock\n"); ++ return PTR_ERR(host->clk_mod); ++ } ++ ++ host->reset = devm_reset_control_get(&pdev->dev, "ahb"); ++ if (IS_ERR(host->reset)) ++ host->reset = NULL; /* Having a reset controller is optional */ ++ ++ /* ++ * Sometimes the controller asserts the irq on boot for some reason, ++ * and since it is not clocked there is no way to clear it. So make ++ * sure the controller is in a sane state before enabling irqs. ++ */ ++ ret = sunxi_mmc_init_host(host->mmc); ++ if (ret) ++ return ret; ++ ++ host->irq = platform_get_irq(pdev, 0); ++ ret = devm_request_irq(&pdev->dev, host->irq, sunxi_mmc_irq, 0, ++ "sunxi-mmc", host); ++ if (ret == 0) ++ disable_irq(host->irq); ++ ++ /* And disable the controller again */ ++ sunxi_mmc_exit_host(host); ++ ++ return ret; ++} ++ ++static int sunxi_mmc_probe(struct platform_device *pdev) ++{ ++ struct sunxi_mmc_host *host; ++ struct mmc_host *mmc; ++ int ret; ++ ++ mmc = mmc_alloc_host(sizeof(struct sunxi_mmc_host), &pdev->dev); ++ if (!mmc) { ++ dev_err(&pdev->dev, "mmc alloc host failed\n"); ++ return -ENOMEM; ++ } ++ ++ host = mmc_priv(mmc); ++ host->mmc = mmc; ++ spin_lock_init(&host->lock); ++ tasklet_init(&host->manual_stop_tasklet, ++ sunxi_mmc_manual_stop_tasklet, (unsigned long)host); ++ ++ ret = sunxi_mmc_resource_request(host, pdev); ++ if (ret) ++ goto error_free_host; ++ ++ host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, ++ &host->sg_dma, GFP_KERNEL); ++ if (!host->sg_cpu) { ++ dev_err(&pdev->dev, "Failed to allocate DMA descriptor mem\n"); ++ ret = -ENOMEM; ++ goto error_free_host; ++ } ++ ++ mmc->ops = &sunxi_mmc_ops; ++ mmc->max_blk_count = 8192; ++ mmc->max_blk_size = 4096; ++ mmc->max_segs = PAGE_SIZE / sizeof(struct sunxi_idma_des); ++ mmc->max_seg_size = (1 << host->idma_des_size_bits); ++ mmc->max_req_size = mmc->max_seg_size * mmc->max_segs; ++ /* 400kHz ~ 50MHz */ ++ mmc->f_min = 400000; ++ mmc->f_max = 50000000; ++ /* available voltages */ ++ if (!IS_ERR(host->vmmc)) ++ mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vmmc); ++ else ++ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; ++ ++ mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; ++ mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; ++ ++ ret = mmc_of_parse(mmc); ++ if (ret) ++ goto error_free_dma; ++ ++ ret = mmc_add_host(mmc); ++ if (ret) ++ goto error_free_dma; ++ ++ dev_info(&pdev->dev, "base:0x%p irq:%u\n", host->reg_base, host->irq); ++ platform_set_drvdata(pdev, mmc); ++ return 0; ++ ++error_free_dma: ++ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); ++error_free_host: ++ mmc_free_host(mmc); ++ return ret; ++} ++ ++static int sunxi_mmc_remove(struct platform_device *pdev) ++{ ++ struct mmc_host *mmc = platform_get_drvdata(pdev); ++ struct sunxi_mmc_host *host = mmc_priv(mmc); ++ ++ mmc_remove_host(mmc); ++ sunxi_mmc_exit_host(host); ++ tasklet_disable(&host->manual_stop_tasklet); ++ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); ++ mmc_free_host(mmc); ++ ++ return 0; ++} ++ ++static struct platform_driver sunxi_mmc_driver = { ++ .driver = { ++ .name = "sunxi-mmc", ++ .owner = THIS_MODULE, ++ .of_match_table = of_match_ptr(sunxi_mmc_of_match), ++ }, ++ .probe = sunxi_mmc_probe, ++ .remove = sunxi_mmc_remove, ++}; ++module_platform_driver(sunxi_mmc_driver); ++ ++MODULE_DESCRIPTION("Allwinner's SD/MMC Card Controller Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("David Lanzendörfer "); ++MODULE_ALIAS("platform:sunxi-mmc"); +diff --git a/include/linux/clk/sunxi.h b/include/linux/clk/sunxi.h +new file mode 100644 +index 0000000..1ef5c89 +--- /dev/null ++++ b/include/linux/clk/sunxi.h +@@ -0,0 +1,22 @@ ++/* ++ * Copyright 2013 - Hans de Goede ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef __LINUX_CLK_SUNXI_H_ ++#define __LINUX_CLK_SUNXI_H_ ++ ++#include ++ ++void clk_sunxi_mmc_phase_control(struct clk_hw *hw, u8 sample, u8 output); ++ ++#endif +-- +1.9.0 + diff --git a/config-armv7-generic b/config-armv7-generic index ed70937e8..b84d327e6 100644 --- a/config-armv7-generic +++ b/config-armv7-generic @@ -175,6 +175,7 @@ CONFIG_PHY_SUN4I_USB=m CONFIG_AHCI_SUNXI=m CONFIG_SPI_SUN4I=m CONFIG_SPI_SUN6I=m +CONFIG_MMC_SUNXI=m CONFIG_REGMAP=y CONFIG_REGMAP_I2C=m diff --git a/kernel.spec b/kernel.spec index 329bdcd59..28ac2c3b9 100644 --- a/kernel.spec +++ b/kernel.spec @@ -612,6 +612,7 @@ Patch21020: arm-tegra-usb-no-reset-linux33.patch # ARM i.MX6 # ARM sunxi (AllWinner) +Patch21025: 0001-ARM-sunxi-Add-driver-for-SD-MMC-hosts-found-on-Allwi.patch #rhbz 754518 Patch21235: scsi-sd_revalidate_disk-prevent-NULL-ptr-deref.patch @@ -1167,6 +1168,7 @@ ApplyPatch 0001-lib-cpumask-Make-CPUMASK_OFFSTACK-usable-without-deb.patch ApplyPatch arm-lpae-ax88796.patch ApplyPatch arm-sound-soc-samsung-dma-avoid-another-64bit-division.patch ApplyPatch arm-tegra-usb-no-reset-linux33.patch +ApplyPatch 0001-ARM-sunxi-Add-driver-for-SD-MMC-hosts-found-on-Allwi.patch # # bugfixes to drivers and filesystems @@ -2061,6 +2063,9 @@ fi # ||----w | # || || %changelog +* Fri Apr 25 2014 Hans de Goede +- Add a patch to add support for the mmc controller on sunxi ARM SoCs + * Thu Apr 24 2014 Josh Boyer - 3.15.0-0.rc2.git3.1 - Linux v3.15-rc2-107-g76429f1dedbc