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Merge remote-tracking branch 'shesselba/for-mvebu/pinctrl-dove' into mvebu/pinctrl

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This commit is contained in:
Jason Cooper 2014-03-01 07:03:36 +00:00
commit 08d4f0c8b1
8 changed files with 202 additions and 113 deletions
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22
Documentation/devicetree/bindings/arm/marvell,dove.txt Normal file
View file

@ -0,0 +1,22 @@
Marvell Dove Platforms Device Tree Bindings
-----------------------------------------------
Boards with a Marvell Dove SoC shall have the following properties:
Required root node property:
- compatible: must contain "marvell,dove";
* Global Configuration registers
Global Configuration registers of Dove SoC are shared by a syscon node.
Required properties:
- compatible: must contain "marvell,dove-global-config" and "syscon".
- reg: base address and size of the Global Configuration registers.
Example:
gconf: global-config@e802c {
compatible = "marvell,dove-global-config", "syscon";
reg = <0xe802c 0x14>;
};

1
Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
View file

@ -5,6 +5,7 @@ part and usage.
Required properties:
- compatible: "marvell,88f6710-pinctrl"
- reg: register specifier of MPP registers
Available mpp pins/groups and functions:
Note: brackets (x) are not part of the mpp name for marvell,function and given

1
Documentation/devicetree/bindings/pinctrl/marvell,armada-xp-pinctrl.txt
View file

@ -6,6 +6,7 @@ part and usage.
Required properties:
- compatible: "marvell,mv78230-pinctrl", "marvell,mv78260-pinctrl",
"marvell,mv78460-pinctrl"
- reg: register specifier of MPP registers
This driver supports all Armada XP variants, i.e. mv78230, mv78260, and mv78460.

1
Documentation/devicetree/bindings/pinctrl/marvell,dove-pinctrl.txt
View file

@ -6,6 +6,7 @@ part and usage.
Required properties:
- compatible: "marvell,dove-pinctrl"
- clocks: (optional) phandle of pdma clock
- reg: register specifiers of MPP, MPP4, and PMU MPP registers
Available mpp pins/groups and functions:
Note: brackets (x) are not part of the mpp name for marvell,function and given

1
Documentation/devicetree/bindings/pinctrl/marvell,kirkwood-pinctrl.txt
View file

@ -8,6 +8,7 @@ Required properties:
"marvell,88f6190-pinctrl", "marvell,88f6192-pinctrl",
"marvell,88f6281-pinctrl", "marvell,88f6282-pinctrl"
"marvell,98dx4122-pinctrl"
- reg: register specifier of MPP registers
This driver supports all kirkwood variants, i.e. 88f6180, 88f619x, and 88f628x.
It also support the 88f6281-based variant in the 98dx412x Bobcat SoCs.

2
Documentation/devicetree/bindings/pinctrl/marvell,mvebu-pinctrl.txt
View file

@ -37,7 +37,7 @@ uart1: serial@12100 {
pinctrl: pinctrl@d0200 {
compatible = "marvell,dove-pinctrl";
reg = <0xd0200 0x20>;
reg = <0xd0200 0x14>, <0xd0440 0x04>, <0xd802c 0x08>;
pmx_uart1_sw: pmx-uart1-sw {
marvell,pins = "mpp_uart1";

1
drivers/pinctrl/mvebu/Kconfig
View file

@ -8,6 +8,7 @@ config PINCTRL_MVEBU
config PINCTRL_DOVE
bool
select PINCTRL_MVEBU
select MFD_SYSCON
config PINCTRL_KIRKWOOD
bool

284
drivers/pinctrl/mvebu/pinctrl-dove.c
View file

@ -18,40 +18,53 @@
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mfd/syscon.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/regmap.h>
#include "pinctrl-mvebu.h"
#define DOVE_SB_REGS_VIRT_BASE IOMEM(0xfde00000)
#define DOVE_MPP_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE + 0xd0200)
#define DOVE_PMU_MPP_GENERAL_CTRL (DOVE_MPP_VIRT_BASE + 0x10)
#define DOVE_AU0_AC97_SEL BIT(16)
#define DOVE_PMU_SIGNAL_SELECT_0 (DOVE_SB_REGS_VIRT_BASE + 0xd802C)
#define DOVE_PMU_SIGNAL_SELECT_1 (DOVE_SB_REGS_VIRT_BASE + 0xd8030)
#define DOVE_GLOBAL_CONFIG_1 (DOVE_SB_REGS_VIRT_BASE + 0xe802C)
#define DOVE_GLOBAL_CONFIG_1 (DOVE_SB_REGS_VIRT_BASE + 0xe802C)
#define DOVE_TWSI_ENABLE_OPTION1 BIT(7)
#define DOVE_GLOBAL_CONFIG_2 (DOVE_SB_REGS_VIRT_BASE + 0xe8030)
#define DOVE_TWSI_ENABLE_OPTION2 BIT(20)
#define DOVE_TWSI_ENABLE_OPTION3 BIT(21)
#define DOVE_TWSI_OPTION3_GPIO BIT(22)
#define DOVE_SSP_CTRL_STATUS_1 (DOVE_SB_REGS_VIRT_BASE + 0xe8034)
#define DOVE_SSP_ON_AU1 BIT(0)
#define DOVE_MPP_GENERAL_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE + 0xe803c)
#define DOVE_AU1_SPDIFO_GPIO_EN BIT(1)
#define DOVE_NAND_GPIO_EN BIT(0)
#define DOVE_GPIO_LO_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE + 0xd0400)
#define DOVE_MPP_CTRL4_VIRT_BASE (DOVE_GPIO_LO_VIRT_BASE + 0x40)
#define DOVE_SPI_GPIO_SEL BIT(5)
#define DOVE_UART1_GPIO_SEL BIT(4)
#define DOVE_AU1_GPIO_SEL BIT(3)
#define DOVE_CAM_GPIO_SEL BIT(2)
#define DOVE_SD1_GPIO_SEL BIT(1)
#define DOVE_SD0_GPIO_SEL BIT(0)
/* Internal registers can be configured at any 1 MiB aligned address */
#define INT_REGS_MASK ~(SZ_1M - 1)
#define MPP4_REGS_OFFS 0xd0440
#define PMU_REGS_OFFS 0xd802c
#define GC_REGS_OFFS 0xe802c
/* MPP Base registers */
#define PMU_MPP_GENERAL_CTRL 0x10
#define AU0_AC97_SEL BIT(16)
/* MPP Control 4 register */
#define SPI_GPIO_SEL BIT(5)
#define UART1_GPIO_SEL BIT(4)
#define AU1_GPIO_SEL BIT(3)
#define CAM_GPIO_SEL BIT(2)
#define SD1_GPIO_SEL BIT(1)
#define SD0_GPIO_SEL BIT(0)
/* PMU Signal Select registers */
#define PMU_SIGNAL_SELECT_0 0x00
#define PMU_SIGNAL_SELECT_1 0x04
/* Global Config regmap registers */
#define GLOBAL_CONFIG_1 0x00
#define TWSI_ENABLE_OPTION1 BIT(7)
#define GLOBAL_CONFIG_2 0x04
#define TWSI_ENABLE_OPTION2 BIT(20)
#define TWSI_ENABLE_OPTION3 BIT(21)
#define TWSI_OPTION3_GPIO BIT(22)
#define SSP_CTRL_STATUS_1 0x08
#define SSP_ON_AU1 BIT(0)
#define MPP_GENERAL_CONFIG 0x10
#define AU1_SPDIFO_GPIO_EN BIT(1)
#define NAND_GPIO_EN BIT(0)
#define CONFIG_PMU BIT(4)
static void __iomem *mpp_base;
static void __iomem *mpp4_base;
static void __iomem *pmu_base;
static struct regmap *gconfmap;
static int dove_mpp_ctrl_get(unsigned pid, unsigned long *config)
{
@ -67,13 +80,13 @@ static int dove_pmu_mpp_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned long pmu = readl(DOVE_PMU_MPP_GENERAL_CTRL);
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
unsigned long func;
if ((pmu & BIT(pid)) == 0)
return default_mpp_ctrl_get(mpp_base, pid, config);
func = readl(DOVE_PMU_SIGNAL_SELECT_0 + off);
func = readl(pmu_base + PMU_SIGNAL_SELECT_0 + off);
*config = (func >> shift) & MVEBU_MPP_MASK;
*config |= CONFIG_PMU;
@ -84,43 +97,43 @@ static int dove_pmu_mpp_ctrl_set(unsigned pid, unsigned long config)
{
unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned long pmu = readl(DOVE_PMU_MPP_GENERAL_CTRL);
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
unsigned long func;
if ((config & CONFIG_PMU) == 0) {
writel(pmu & ~BIT(pid), DOVE_PMU_MPP_GENERAL_CTRL);
writel(pmu & ~BIT(pid), mpp_base + PMU_MPP_GENERAL_CTRL);
return default_mpp_ctrl_set(mpp_base, pid, config);
}
writel(pmu | BIT(pid), DOVE_PMU_MPP_GENERAL_CTRL);
func = readl(DOVE_PMU_SIGNAL_SELECT_0 + off);
writel(pmu | BIT(pid), mpp_base + PMU_MPP_GENERAL_CTRL);
func = readl(pmu_base + PMU_SIGNAL_SELECT_0 + off);
func &= ~(MVEBU_MPP_MASK << shift);
func |= (config & MVEBU_MPP_MASK) << shift;
writel(func, DOVE_PMU_SIGNAL_SELECT_0 + off);
writel(func, pmu_base + PMU_SIGNAL_SELECT_0 + off);
return 0;
}
static int dove_mpp4_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long mpp4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
unsigned long mpp4 = readl(mpp4_base);
unsigned long mask;
switch (pid) {
case 24: /* mpp_camera */
mask = DOVE_CAM_GPIO_SEL;
mask = CAM_GPIO_SEL;
break;
case 40: /* mpp_sdio0 */
mask = DOVE_SD0_GPIO_SEL;
mask = SD0_GPIO_SEL;
break;
case 46: /* mpp_sdio1 */
mask = DOVE_SD1_GPIO_SEL;
mask = SD1_GPIO_SEL;
break;
case 58: /* mpp_spi0 */
mask = DOVE_SPI_GPIO_SEL;
mask = SPI_GPIO_SEL;
break;
case 62: /* mpp_uart1 */
mask = DOVE_UART1_GPIO_SEL;
mask = UART1_GPIO_SEL;
break;
default:
return -EINVAL;
@ -133,24 +146,24 @@ static int dove_mpp4_ctrl_get(unsigned pid, unsigned long *config)
static int dove_mpp4_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long mpp4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
unsigned long mpp4 = readl(mpp4_base);
unsigned long mask;
switch (pid) {
case 24: /* mpp_camera */
mask = DOVE_CAM_GPIO_SEL;
mask = CAM_GPIO_SEL;
break;
case 40: /* mpp_sdio0 */
mask = DOVE_SD0_GPIO_SEL;
mask = SD0_GPIO_SEL;
break;
case 46: /* mpp_sdio1 */
mask = DOVE_SD1_GPIO_SEL;
mask = SD1_GPIO_SEL;
break;
case 58: /* mpp_spi0 */
mask = DOVE_SPI_GPIO_SEL;
mask = SPI_GPIO_SEL;
break;
case 62: /* mpp_uart1 */
mask = DOVE_UART1_GPIO_SEL;
mask = UART1_GPIO_SEL;
break;
default:
return -EINVAL;
@ -160,69 +173,69 @@ static int dove_mpp4_ctrl_set(unsigned pid, unsigned long config)
if (config)
mpp4 |= mask;
writel(mpp4, DOVE_MPP_CTRL4_VIRT_BASE);
writel(mpp4, mpp4_base);
return 0;
}
static int dove_nand_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long gmpp = readl(DOVE_MPP_GENERAL_VIRT_BASE);
unsigned int gmpp;
*config = ((gmpp & DOVE_NAND_GPIO_EN) != 0);
regmap_read(gconfmap, MPP_GENERAL_CONFIG, &gmpp);
*config = ((gmpp & NAND_GPIO_EN) != 0);
return 0;
}
static int dove_nand_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long gmpp = readl(DOVE_MPP_GENERAL_VIRT_BASE);
gmpp &= ~DOVE_NAND_GPIO_EN;
if (config)
gmpp |= DOVE_NAND_GPIO_EN;
writel(gmpp, DOVE_MPP_GENERAL_VIRT_BASE);
regmap_update_bits(gconfmap, MPP_GENERAL_CONFIG,
NAND_GPIO_EN,
(config) ? NAND_GPIO_EN : 0);
return 0;
}
static int dove_audio0_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long pmu = readl(DOVE_PMU_MPP_GENERAL_CTRL);
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
*config = ((pmu & DOVE_AU0_AC97_SEL) != 0);
*config = ((pmu & AU0_AC97_SEL) != 0);
return 0;
}
static int dove_audio0_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long pmu = readl(DOVE_PMU_MPP_GENERAL_CTRL);
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
pmu &= ~DOVE_AU0_AC97_SEL;
pmu &= ~AU0_AC97_SEL;
if (config)
pmu |= DOVE_AU0_AC97_SEL;
writel(pmu, DOVE_PMU_MPP_GENERAL_CTRL);
pmu |= AU0_AC97_SEL;
writel(pmu, mpp_base + PMU_MPP_GENERAL_CTRL);
return 0;
}
static int dove_audio1_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long mpp4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
unsigned long sspc1 = readl(DOVE_SSP_CTRL_STATUS_1);
unsigned long gmpp = readl(DOVE_MPP_GENERAL_VIRT_BASE);
unsigned long gcfg2 = readl(DOVE_GLOBAL_CONFIG_2);
unsigned int mpp4 = readl(mpp4_base);
unsigned int sspc1;
unsigned int gmpp;
unsigned int gcfg2;
regmap_read(gconfmap, SSP_CTRL_STATUS_1, &sspc1);
regmap_read(gconfmap, MPP_GENERAL_CONFIG, &gmpp);
regmap_read(gconfmap, GLOBAL_CONFIG_2, &gcfg2);
*config = 0;
if (mpp4 & DOVE_AU1_GPIO_SEL)
if (mpp4 & AU1_GPIO_SEL)
*config |= BIT(3);
if (sspc1 & DOVE_SSP_ON_AU1)
if (sspc1 & SSP_ON_AU1)
*config |= BIT(2);
if (gmpp & DOVE_AU1_SPDIFO_GPIO_EN)
if (gmpp & AU1_SPDIFO_GPIO_EN)
*config |= BIT(1);
if (gcfg2 & DOVE_TWSI_OPTION3_GPIO)
if (gcfg2 & TWSI_OPTION3_GPIO)
*config |= BIT(0);
/* SSP/TWSI only if I2S1 not set*/
@ -236,32 +249,22 @@ static int dove_audio1_ctrl_get(unsigned pid, unsigned long *config)
static int dove_audio1_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long mpp4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
unsigned long sspc1 = readl(DOVE_SSP_CTRL_STATUS_1);
unsigned long gmpp = readl(DOVE_MPP_GENERAL_VIRT_BASE);
unsigned long gcfg2 = readl(DOVE_GLOBAL_CONFIG_2);
unsigned int mpp4 = readl(mpp4_base);
/*
* clear all audio1 related bits before configure
*/
gcfg2 &= ~DOVE_TWSI_OPTION3_GPIO;
gmpp &= ~DOVE_AU1_SPDIFO_GPIO_EN;
sspc1 &= ~DOVE_SSP_ON_AU1;
mpp4 &= ~DOVE_AU1_GPIO_SEL;
if (config & BIT(0))
gcfg2 |= DOVE_TWSI_OPTION3_GPIO;
if (config & BIT(1))
gmpp |= DOVE_AU1_SPDIFO_GPIO_EN;
if (config & BIT(2))
sspc1 |= DOVE_SSP_ON_AU1;
mpp4 &= ~AU1_GPIO_SEL;
if (config & BIT(3))
mpp4 |= DOVE_AU1_GPIO_SEL;
mpp4 |= AU1_GPIO_SEL;
writel(mpp4, mpp4_base);
writel(mpp4, DOVE_MPP_CTRL4_VIRT_BASE);
writel(sspc1, DOVE_SSP_CTRL_STATUS_1);
writel(gmpp, DOVE_MPP_GENERAL_VIRT_BASE);
writel(gcfg2, DOVE_GLOBAL_CONFIG_2);
regmap_update_bits(gconfmap, SSP_CTRL_STATUS_1,
SSP_ON_AU1,
(config & BIT(2)) ? SSP_ON_AU1 : 0);
regmap_update_bits(gconfmap, MPP_GENERAL_CONFIG,
AU1_SPDIFO_GPIO_EN,
(config & BIT(1)) ? AU1_SPDIFO_GPIO_EN : 0);
regmap_update_bits(gconfmap, GLOBAL_CONFIG_2,
TWSI_OPTION3_GPIO,
(config & BIT(0)) ? TWSI_OPTION3_GPIO : 0);
return 0;
}
@ -307,15 +310,18 @@ static int dove_audio1_ctrl_gpio_dir(unsigned pid, bool input)
static int dove_twsi_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long gcfg1 = readl(DOVE_GLOBAL_CONFIG_1);
unsigned long gcfg2 = readl(DOVE_GLOBAL_CONFIG_2);
unsigned int gcfg1;
unsigned int gcfg2;
regmap_read(gconfmap, GLOBAL_CONFIG_1, &gcfg1);
regmap_read(gconfmap, GLOBAL_CONFIG_2, &gcfg2);
*config = 0;
if (gcfg1 & DOVE_TWSI_ENABLE_OPTION1)
if (gcfg1 & TWSI_ENABLE_OPTION1)
*config = 1;
else if (gcfg2 & DOVE_TWSI_ENABLE_OPTION2)
else if (gcfg2 & TWSI_ENABLE_OPTION2)
*config = 2;
else if (gcfg2 & DOVE_TWSI_ENABLE_OPTION3)
else if (gcfg2 & TWSI_ENABLE_OPTION3)
*config = 3;
return 0;
@ -323,26 +329,27 @@ static int dove_twsi_ctrl_get(unsigned pid, unsigned long *config)
static int dove_twsi_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long gcfg1 = readl(DOVE_GLOBAL_CONFIG_1);
unsigned long gcfg2 = readl(DOVE_GLOBAL_CONFIG_2);
gcfg1 &= ~DOVE_TWSI_ENABLE_OPTION1;
gcfg2 &= ~(DOVE_TWSI_ENABLE_OPTION2 | DOVE_TWSI_ENABLE_OPTION3);
unsigned int gcfg1 = 0;
unsigned int gcfg2 = 0;
switch (config) {
case 1:
gcfg1 |= DOVE_TWSI_ENABLE_OPTION1;
gcfg1 = TWSI_ENABLE_OPTION1;
break;
case 2:
gcfg2 |= DOVE_TWSI_ENABLE_OPTION2;
gcfg2 = TWSI_ENABLE_OPTION2;
break;
case 3:
gcfg2 |= DOVE_TWSI_ENABLE_OPTION3;
gcfg2 = TWSI_ENABLE_OPTION3;
break;
}
writel(gcfg1, DOVE_GLOBAL_CONFIG_1);
writel(gcfg2, DOVE_GLOBAL_CONFIG_2);
regmap_update_bits(gconfmap, GLOBAL_CONFIG_1,
TWSI_ENABLE_OPTION1,
gcfg1);
regmap_update_bits(gconfmap, GLOBAL_CONFIG_2,
TWSI_ENABLE_OPTION2 | TWSI_ENABLE_OPTION3,
gcfg2);
return 0;
}
@ -749,9 +756,17 @@ static struct of_device_id dove_pinctrl_of_match[] = {
{ }
};
static struct regmap_config gc_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = 5,
};
static int dove_pinctrl_probe(struct platform_device *pdev)
{
struct resource *res;
struct resource *res, *mpp_res;
struct resource fb_res;
const struct of_device_id *match =
of_match_device(dove_pinctrl_of_match, &pdev->dev);
pdev->dev.platform_data = (void *)match->data;
@ -767,11 +782,58 @@ static int dove_pinctrl_probe(struct platform_device *pdev)
}
clk_prepare_enable(clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mpp_base = devm_ioremap_resource(&pdev->dev, res);
mpp_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mpp_base = devm_ioremap_resource(&pdev->dev, mpp_res);
if (IS_ERR(mpp_base))
return PTR_ERR(mpp_base);
/* prepare fallback resource */
memcpy(&fb_res, mpp_res, sizeof(struct resource));
fb_res.start = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_warn(&pdev->dev, "falling back to hardcoded MPP4 resource\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + MPP4_REGS_OFFS, 0x4);
res = &fb_res;
}
mpp4_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(mpp4_base))
return PTR_ERR(mpp4_base);
res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
if (!res) {
dev_warn(&pdev->dev, "falling back to hardcoded PMU resource\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + PMU_REGS_OFFS, 0x8);
res = &fb_res;
}
pmu_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pmu_base))
return PTR_ERR(pmu_base);
gconfmap = syscon_regmap_lookup_by_compatible("marvell,dove-global-config");
if (IS_ERR(gconfmap)) {
void __iomem *gc_base;
dev_warn(&pdev->dev, "falling back to hardcoded global registers\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + GC_REGS_OFFS, 0x14);
gc_base = devm_ioremap_resource(&pdev->dev, &fb_res);
if (IS_ERR(gc_base))
return PTR_ERR(gc_base);
gconfmap = devm_regmap_init_mmio(&pdev->dev,
gc_base, &gc_regmap_config);
if (IS_ERR(gconfmap))
return PTR_ERR(gconfmap);
}
/* Warn on any missing DT resource */
WARN(fb_res.start, FW_BUG "Missing pinctrl regs in DTB. Please update your firmware.\n");
return mvebu_pinctrl_probe(pdev);
}