diff options
author | Arnd Bergmann <arnd@arndb.de> | 2012-05-16 14:35:25 (GMT) |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2012-05-16 14:35:25 (GMT) |
commit | 3c0dec5f58b3c7b3627715126d1bf9b030a076f0 (patch) | |
tree | 4bf8f56fca3bf6be109209b116fc8e32cb2e0f9e | |
parent | fcd8d84a585f3578a9ebdd27e757495a27415322 (diff) | |
parent | 7e0fa1b5fa91d9aa456d102c273b2cf0f2e95d39 (diff) | |
download | linux-fsl-qoriq-3c0dec5f58b3c7b3627715126d1bf9b030a076f0.tar.xz |
Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clock
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
clk: Provide dummy clk_unregister()
ARM: Kirkwood: Replace clock gating
ARM: Orion: Audio: Add clk/clkdev support
ARM: Orion: PCIE: Add support for clk
ARM: Orion: XOR: Add support for clk
ARM: Orion: CESA: Add support for clk
ARM: Orion: SDIO: Add support for clk.
ARM: Orion: NAND: Add support for clk, if there is one.
ARM: Orion: EHCI: Add support for enabling clocks
ARM: Orion: SATA: Add per channel clk/clkdev support.
ARM: Orion: UART: Get the clock rate via clk_get_rate().
ARM: Orion: WDT: Add clk/clkdev support
ARM: Orion: Eth: Add clk/clkdev support.
ARM: Orion: SPI: Add clk/clkdev support.
ARM: Orion: Add clocks using the generic clk infrastructure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
36 files changed, 585 insertions, 264 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index f0fc527..0a166b5 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1142,6 +1142,7 @@ config PLAT_ORION bool select CLKSRC_MMIO select GENERIC_IRQ_CHIP + select COMMON_CLK config PLAT_PXA bool diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c index bda7aca..0ab0f81 100644 --- a/arch/arm/mach-dove/common.c +++ b/arch/arm/mach-dove/common.c @@ -13,7 +13,7 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/pci.h> -#include <linux/clk.h> +#include <linux/clk-provider.h> #include <linux/ata_platform.h> #include <linux/gpio.h> #include <asm/page.h> @@ -68,6 +68,19 @@ void __init dove_map_io(void) } /***************************************************************************** + * CLK tree + ****************************************************************************/ +static struct clk *tclk; + +static void __init clk_init(void) +{ + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, + get_tclk()); + + orion_clkdev_init(tclk); +} + +/***************************************************************************** * EHCI0 ****************************************************************************/ void __init dove_ehci0_init(void) @@ -89,8 +102,7 @@ void __init dove_ehci1_init(void) void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data) { orion_ge00_init(eth_data, - DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM, - 0, get_tclk()); + DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM, 0); } /***************************************************************************** @@ -116,7 +128,7 @@ void __init dove_sata_init(struct mv_sata_platform_data *sata_data) void __init dove_uart0_init(void) { orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE, - IRQ_DOVE_UART_0, get_tclk()); + IRQ_DOVE_UART_0, tclk); } /***************************************************************************** @@ -125,7 +137,7 @@ void __init dove_uart0_init(void) void __init dove_uart1_init(void) { orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE, - IRQ_DOVE_UART_1, get_tclk()); + IRQ_DOVE_UART_1, tclk); } /***************************************************************************** @@ -134,7 +146,7 @@ void __init dove_uart1_init(void) void __init dove_uart2_init(void) { orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE, - IRQ_DOVE_UART_2, get_tclk()); + IRQ_DOVE_UART_2, tclk); } /***************************************************************************** @@ -143,7 +155,7 @@ void __init dove_uart2_init(void) void __init dove_uart3_init(void) { orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE, - IRQ_DOVE_UART_3, get_tclk()); + IRQ_DOVE_UART_3, tclk); } /***************************************************************************** @@ -151,12 +163,12 @@ void __init dove_uart3_init(void) ****************************************************************************/ void __init dove_spi0_init(void) { - orion_spi_init(DOVE_SPI0_PHYS_BASE, get_tclk()); + orion_spi_init(DOVE_SPI0_PHYS_BASE); } void __init dove_spi1_init(void) { - orion_spi_1_init(DOVE_SPI1_PHYS_BASE, get_tclk()); + orion_spi_1_init(DOVE_SPI1_PHYS_BASE); } /***************************************************************************** @@ -272,18 +284,17 @@ void __init dove_sdio1_init(void) void __init dove_init(void) { - int tclk; - - tclk = get_tclk(); - printk(KERN_INFO "Dove 88AP510 SoC, "); - printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000); + printk(KERN_INFO "TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000); #ifdef CONFIG_CACHE_TAUROS2 tauros2_init(); #endif dove_setup_cpu_mbus(); + /* Setup root of clk tree */ + clk_init(); + /* internal devices that every board has */ dove_rtc_init(); dove_xor0_init(); diff --git a/arch/arm/mach-dove/dove-db-setup.c b/arch/arm/mach-dove/dove-db-setup.c index ea77ae4..bc2867f 100644 --- a/arch/arm/mach-dove/dove-db-setup.c +++ b/arch/arm/mach-dove/dove-db-setup.c @@ -20,7 +20,6 @@ #include <linux/i2c.h> #include <linux/pci.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/spi/flash.h> #include <linux/gpio.h> #include <asm/mach-types.h> diff --git a/arch/arm/mach-kirkwood/board-dreamplug.c b/arch/arm/mach-kirkwood/board-dreamplug.c index 9854539..55e357a 100644 --- a/arch/arm/mach-kirkwood/board-dreamplug.c +++ b/arch/arm/mach-kirkwood/board-dreamplug.c @@ -27,7 +27,6 @@ #include <linux/mtd/physmap.h> #include <linux/spi/flash.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 1c672d9..87856b5 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -42,6 +42,9 @@ static void __init kirkwood_dt_init(void) kirkwood_l2_init(); #endif + /* Setup root of clk tree */ + kirkwood_clk_init(); + /* internal devices that every board has */ kirkwood_wdt_init(); kirkwood_xor0_init(); diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index a02cae8..25fb3fd 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -15,6 +15,8 @@ #include <linux/ata_platform.h> #include <linux/mtd/nand.h> #include <linux/dma-mapping.h> +#include <linux/clk-provider.h> +#include <linux/spinlock.h> #include <net/dsa.h> #include <asm/page.h> #include <asm/timex.h> @@ -31,6 +33,7 @@ #include <plat/common.h> #include <plat/time.h> #include <plat/addr-map.h> +#include <plat/mv_xor.h> #include "common.h" /***************************************************************************** @@ -60,20 +63,188 @@ void __init kirkwood_map_io(void) iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc)); } -/* - * Default clock control bits. Any bit _not_ set in this variable - * will be cleared from the hardware after platform devices have been - * registered. Some reserved bits must be set to 1. - */ -unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED; +/***************************************************************************** + * CLK tree + ****************************************************************************/ + +static void disable_sata0(void) +{ + /* Disable PLL and IVREF */ + writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2); + /* Disable PHY */ + writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL); +} + +static void disable_sata1(void) +{ + /* Disable PLL and IVREF */ + writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2); + /* Disable PHY */ + writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL); +} + +static void disable_pcie0(void) +{ + writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL); + while (1) + if (readl(PCIE_STATUS) & 0x1) + break; + writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL); +} + +static void disable_pcie1(void) +{ + u32 dev, rev; + + kirkwood_pcie_id(&dev, &rev); + + if (dev == MV88F6282_DEV_ID) { + writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL); + while (1) + if (readl(PCIE1_STATUS) & 0x1) + break; + writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL); + } +} + +/* An extended version of the gated clk. This calls fn() before + * disabling the clock. We use this to turn off PHYs etc. */ +struct clk_gate_fn { + struct clk_gate gate; + void (*fn)(void); +}; +#define to_clk_gate_fn(_gate) container_of(_gate, struct clk_gate_fn, gate) +#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw) + +static void clk_gate_fn_disable(struct clk_hw *hw) +{ + struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate_fn *gate_fn = to_clk_gate_fn(gate); + + if (gate_fn->fn) + gate_fn->fn(); + + clk_gate_ops.disable(hw); +} + +static struct clk_ops clk_gate_fn_ops; + +static struct clk __init *clk_register_gate_fn(struct device *dev, + const char *name, + const char *parent_name, unsigned long flags, + void __iomem *reg, u8 bit_idx, + u8 clk_gate_flags, spinlock_t *lock, + void (*fn)(void)) +{ + struct clk_gate_fn *gate_fn; + struct clk *clk; + struct clk_init_data init; + + gate_fn = kzalloc(sizeof(struct clk_gate_fn), GFP_KERNEL); + if (!gate_fn) { + pr_err("%s: could not allocate gated clk\n", __func__); + return ERR_PTR(-ENOMEM); + } + + init.name = name; + init.ops = &clk_gate_fn_ops; + init.flags = flags; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + /* struct clk_gate assignments */ + gate_fn->gate.reg = reg; + gate_fn->gate.bit_idx = bit_idx; + gate_fn->gate.flags = clk_gate_flags; + gate_fn->gate.lock = lock; + gate_fn->gate.hw.init = &init; + + /* ops is the gate ops, but with our disable function */ + if (clk_gate_fn_ops.disable != clk_gate_fn_disable) { + clk_gate_fn_ops = clk_gate_ops; + clk_gate_fn_ops.disable = clk_gate_fn_disable; + } + + clk = clk_register(dev, &gate_fn->gate.hw); + + if (IS_ERR(clk)) + kfree(gate_fn); + + return clk; +} + +static DEFINE_SPINLOCK(gating_lock); +static struct clk *tclk; + +static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx) +{ + return clk_register_gate(NULL, name, "tclk", 0, + (void __iomem *)CLOCK_GATING_CTRL, + bit_idx, 0, &gating_lock); +} + +static struct clk __init *kirkwood_register_gate_fn(const char *name, + u8 bit_idx, + void (*fn)(void)) +{ + return clk_register_gate_fn(NULL, name, "tclk", 0, + (void __iomem *)CLOCK_GATING_CTRL, + bit_idx, 0, &gating_lock, fn); +} + +void __init kirkwood_clk_init(void) +{ + struct clk *runit, *ge0, *ge1, *sata0, *sata1, *usb0, *sdio; + struct clk *crypto, *xor0, *xor1, *pex0, *pex1, *audio; + + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, + CLK_IS_ROOT, kirkwood_tclk); + + runit = kirkwood_register_gate("runit", CGC_BIT_RUNIT); + ge0 = kirkwood_register_gate("ge0", CGC_BIT_GE0); + ge1 = kirkwood_register_gate("ge1", CGC_BIT_GE1); + sata0 = kirkwood_register_gate_fn("sata0", CGC_BIT_SATA0, + disable_sata0); + sata1 = kirkwood_register_gate_fn("sata1", CGC_BIT_SATA1, + disable_sata1); + usb0 = kirkwood_register_gate("usb0", CGC_BIT_USB0); + sdio = kirkwood_register_gate("sdio", CGC_BIT_SDIO); + crypto = kirkwood_register_gate("crypto", CGC_BIT_CRYPTO); + xor0 = kirkwood_register_gate("xor0", CGC_BIT_XOR0); + xor1 = kirkwood_register_gate("xor1", CGC_BIT_XOR1); + pex0 = kirkwood_register_gate_fn("pex0", CGC_BIT_PEX0, + disable_pcie0); + pex1 = kirkwood_register_gate_fn("pex1", CGC_BIT_PEX1, + disable_pcie1); + audio = kirkwood_register_gate("audio", CGC_BIT_AUDIO); + kirkwood_register_gate("tdm", CGC_BIT_TDM); + kirkwood_register_gate("tsu", CGC_BIT_TSU); + + /* clkdev entries, mapping clks to devices */ + orion_clkdev_add(NULL, "orion_spi.0", runit); + orion_clkdev_add(NULL, "orion_spi.1", runit); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", ge0); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", ge1); + orion_clkdev_add(NULL, "orion_wdt", tclk); + orion_clkdev_add("0", "sata_mv.0", sata0); + orion_clkdev_add("1", "sata_mv.0", sata1); + orion_clkdev_add(NULL, "orion-ehci.0", usb0); + orion_clkdev_add(NULL, "orion_nand", runit); + orion_clkdev_add(NULL, "mvsdio", sdio); + orion_clkdev_add(NULL, "mv_crypto", crypto); + orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".0", xor0); + orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".1", xor1); + orion_clkdev_add("0", "pcie", pex0); + orion_clkdev_add("1", "pcie", pex1); + orion_clkdev_add(NULL, "kirkwood-i2s", audio); +} /***************************************************************************** * EHCI0 ****************************************************************************/ void __init kirkwood_ehci_init(void) { - kirkwood_clk_ctrl |= CGC_USB0; orion_ehci_init(USB_PHYS_BASE, IRQ_KIRKWOOD_USB, EHCI_PHY_NA); } @@ -83,11 +254,9 @@ void __init kirkwood_ehci_init(void) ****************************************************************************/ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) { - kirkwood_clk_ctrl |= CGC_GE0; - orion_ge00_init(eth_data, GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM, - IRQ_KIRKWOOD_GE00_ERR, kirkwood_tclk); + IRQ_KIRKWOOD_GE00_ERR); } @@ -96,12 +265,9 @@ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) ****************************************************************************/ void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data) { - - kirkwood_clk_ctrl |= CGC_GE1; - orion_ge01_init(eth_data, GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM, - IRQ_KIRKWOOD_GE01_ERR, kirkwood_tclk); + IRQ_KIRKWOOD_GE01_ERR); } @@ -143,7 +309,6 @@ static struct platform_device kirkwood_nand_flash = { void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, int chip_delay) { - kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.chip_delay = chip_delay; @@ -153,7 +318,6 @@ void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, void __init kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts, int (*dev_ready)(struct mtd_info *)) { - kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.dev_ready = dev_ready; @@ -174,10 +338,6 @@ static void __init kirkwood_rtc_init(void) ****************************************************************************/ void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data) { - kirkwood_clk_ctrl |= CGC_SATA0; - if (sata_data->n_ports > 1) - kirkwood_clk_ctrl |= CGC_SATA1; - orion_sata_init(sata_data, SATA_PHYS_BASE, IRQ_KIRKWOOD_SATA); } @@ -220,7 +380,6 @@ void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data) mvsdio_data->clock = 100000000; else mvsdio_data->clock = 200000000; - kirkwood_clk_ctrl |= CGC_SDIO; kirkwood_sdio.dev.platform_data = mvsdio_data; platform_device_register(&kirkwood_sdio); } @@ -231,8 +390,7 @@ void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data) ****************************************************************************/ void __init kirkwood_spi_init() { - kirkwood_clk_ctrl |= CGC_RUNIT; - orion_spi_init(SPI_PHYS_BASE, kirkwood_tclk); + orion_spi_init(SPI_PHYS_BASE); } @@ -252,7 +410,7 @@ void __init kirkwood_i2c_init(void) void __init kirkwood_uart0_init(void) { orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, - IRQ_KIRKWOOD_UART_0, kirkwood_tclk); + IRQ_KIRKWOOD_UART_0, tclk); } @@ -262,7 +420,7 @@ void __init kirkwood_uart0_init(void) void __init kirkwood_uart1_init(void) { orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, - IRQ_KIRKWOOD_UART_1, kirkwood_tclk); + IRQ_KIRKWOOD_UART_1, tclk); } /***************************************************************************** @@ -270,7 +428,6 @@ void __init kirkwood_uart1_init(void) ****************************************************************************/ void __init kirkwood_crypto_init(void) { - kirkwood_clk_ctrl |= CGC_CRYPTO; orion_crypto_init(CRYPTO_PHYS_BASE, KIRKWOOD_SRAM_PHYS_BASE, KIRKWOOD_SRAM_SIZE, IRQ_KIRKWOOD_CRYPTO); } @@ -281,8 +438,6 @@ void __init kirkwood_crypto_init(void) ****************************************************************************/ void __init kirkwood_xor0_init(void) { - kirkwood_clk_ctrl |= CGC_XOR0; - orion_xor0_init(XOR0_PHYS_BASE, XOR0_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_00, IRQ_KIRKWOOD_XOR_01); } @@ -293,8 +448,6 @@ void __init kirkwood_xor0_init(void) ****************************************************************************/ void __init kirkwood_xor1_init(void) { - kirkwood_clk_ctrl |= CGC_XOR1; - orion_xor1_init(XOR1_PHYS_BASE, XOR1_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_10, IRQ_KIRKWOOD_XOR_11); } @@ -305,7 +458,7 @@ void __init kirkwood_xor1_init(void) ****************************************************************************/ void __init kirkwood_wdt_init(void) { - orion_wdt_init(kirkwood_tclk); + orion_wdt_init(); } @@ -381,7 +534,6 @@ static struct platform_device kirkwood_pcm_device = { void __init kirkwood_audio_init(void) { - kirkwood_clk_ctrl |= CGC_AUDIO; platform_device_register(&kirkwood_i2s_device); platform_device_register(&kirkwood_pcm_device); } @@ -465,6 +617,9 @@ void __init kirkwood_init(void) kirkwood_l2_init(); #endif + /* Setup root of clk tree */ + kirkwood_clk_init(); + /* internal devices that every board has */ kirkwood_rtc_init(); kirkwood_wdt_init(); @@ -477,61 +632,6 @@ void __init kirkwood_init(void) #endif } -static int __init kirkwood_clock_gate(void) -{ - unsigned int curr = readl(CLOCK_GATING_CTRL); - u32 dev, rev; - - kirkwood_pcie_id(&dev, &rev); - printk(KERN_DEBUG "Gating clock of unused units\n"); - printk(KERN_DEBUG "before: 0x%08x\n", curr); - - /* Make sure those units are accessible */ - writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0 | CGC_PEX1, CLOCK_GATING_CTRL); - - /* For SATA: first shutdown the phy */ - if (!(kirkwood_clk_ctrl & CGC_SATA0)) { - /* Disable PLL and IVREF */ - writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2); - /* Disable PHY */ - writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL); - } - if (!(kirkwood_clk_ctrl & CGC_SATA1)) { - /* Disable PLL and IVREF */ - writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2); - /* Disable PHY */ - writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL); - } - - /* For PCIe: first shutdown the phy */ - if (!(kirkwood_clk_ctrl & CGC_PEX0)) { - writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL); - while (1) - if (readl(PCIE_STATUS) & 0x1) - break; - writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL); - } - - /* For PCIe 1: first shutdown the phy */ - if (dev == MV88F6282_DEV_ID) { - if (!(kirkwood_clk_ctrl & CGC_PEX1)) { - writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL); - while (1) - if (readl(PCIE1_STATUS) & 0x1) - break; - writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL); - } - } else /* keep this bit set for devices that don't have PCIe1 */ - kirkwood_clk_ctrl |= CGC_PEX1; - - /* Now gate clock the required units */ - writel(kirkwood_clk_ctrl, CLOCK_GATING_CTRL); - printk(KERN_DEBUG " after: 0x%08x\n", readl(CLOCK_GATING_CTRL)); - - return 0; -} -late_initcall(kirkwood_clock_gate); - void kirkwood_restart(char mode, const char *cmd) { /* diff --git a/arch/arm/mach-kirkwood/common.h b/arch/arm/mach-kirkwood/common.h index fa8e768..0729b11 100644 --- a/arch/arm/mach-kirkwood/common.h +++ b/arch/arm/mach-kirkwood/common.h @@ -50,6 +50,7 @@ void kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, int delay); void kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts, int (*dev_ready)(struct mtd_info *)); void kirkwood_audio_init(void); void kirkwood_restart(char, const char *); +void kirkwood_clk_init(void); /* board init functions for boards not fully converted to fdt */ #ifdef CONFIG_MACH_DREAMPLUG_DT diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h index 957bd79..3eee37a 100644 --- a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h +++ b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h @@ -43,6 +43,22 @@ #define L2_WRITETHROUGH 0x00000010 #define CLOCK_GATING_CTRL (BRIDGE_VIRT_BASE | 0x11c) +#define CGC_BIT_GE0 (0) +#define CGC_BIT_PEX0 (2) +#define CGC_BIT_USB0 (3) +#define CGC_BIT_SDIO (4) +#define CGC_BIT_TSU (5) +#define CGC_BIT_DUNIT (6) +#define CGC_BIT_RUNIT (7) +#define CGC_BIT_XOR0 (8) +#define CGC_BIT_AUDIO (9) +#define CGC_BIT_SATA0 (14) +#define CGC_BIT_SATA1 (15) +#define CGC_BIT_XOR1 (16) +#define CGC_BIT_CRYPTO (17) +#define CGC_BIT_PEX1 (18) +#define CGC_BIT_GE1 (19) +#define CGC_BIT_TDM (20) #define CGC_GE0 (1 << 0) #define CGC_PEX0 (1 << 2) #define CGC_USB0 (1 << 3) diff --git a/arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c b/arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c index 85f6169..6d8364a 100644 --- a/arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c +++ b/arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c @@ -23,7 +23,6 @@ #include <linux/gpio_keys.h> #include <linux/spi/flash.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <net/dsa.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> diff --git a/arch/arm/mach-kirkwood/pcie.c b/arch/arm/mach-kirkwood/pcie.c index f56a011..f26d6cf 100644 --- a/arch/arm/mach-kirkwood/pcie.c +++ b/arch/arm/mach-kirkwood/pcie.c @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <linux/pci.h> #include <linux/slab.h> +#include <linux/clk.h> #include <video/vga.h> #include <asm/irq.h> #include <asm/mach/pci.h> @@ -19,6 +20,23 @@ #include <plat/addr-map.h> #include "common.h" +static void kirkwood_enable_pcie_clk(const char *port) +{ + struct clk *clk; + + clk = clk_get_sys("pcie", port); + if (IS_ERR(clk)) { + printk(KERN_ERR "PCIE clock %s missing\n", port); + return; + } + clk_prepare_enable(clk); + clk_put(clk); +} + +/* This function is called very early in the boot when probing the + hardware to determine what we actually are, and what rate tclk is + ticking at. Hence calling kirkwood_enable_pcie_clk() is not + possible since the clk tree has not been created yet. */ void kirkwood_enable_pcie(void) { u32 curr = readl(CLOCK_GATING_CTRL); @@ -26,7 +44,7 @@ void kirkwood_enable_pcie(void) writel(curr | CGC_PEX0, CLOCK_GATING_CTRL); } -void __init kirkwood_pcie_id(u32 *dev, u32 *rev) +void kirkwood_pcie_id(u32 *dev, u32 *rev) { kirkwood_enable_pcie(); *dev = orion_pcie_dev_id((void __iomem *)PCIE_VIRT_BASE); @@ -163,7 +181,6 @@ static void __init pcie1_ioresources_init(struct pcie_port *pp) static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys) { - extern unsigned int kirkwood_clk_ctrl; struct pcie_port *pp; int index; @@ -182,11 +199,11 @@ static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys) switch (index) { case 0: - kirkwood_clk_ctrl |= CGC_PEX0; + kirkwood_enable_pcie_clk("0"); pcie0_ioresources_init(pp); break; case 1: - kirkwood_clk_ctrl |= CGC_PEX1; + kirkwood_enable_pcie_clk("1"); pcie1_ioresources_init(pp); break; default: diff --git a/arch/arm/mach-kirkwood/rd88f6192-nas-setup.c b/arch/arm/mach-kirkwood/rd88f6192-nas-setup.c index fd2c9c8..f742a66 100644 --- a/arch/arm/mach-kirkwood/rd88f6192-nas-setup.c +++ b/arch/arm/mach-kirkwood/rd88f6192-nas-setup.c @@ -16,7 +16,6 @@ #include <linux/gpio.h> #include <linux/spi/flash.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <mach/kirkwood.h> diff --git a/arch/arm/mach-kirkwood/t5325-setup.c b/arch/arm/mach-kirkwood/t5325-setup.c index f9d2a11..bad738e 100644 --- a/arch/arm/mach-kirkwood/t5325-setup.c +++ b/arch/arm/mach-kirkwood/t5325-setup.c @@ -16,7 +16,6 @@ #include <linux/mtd/physmap.h> #include <linux/spi/flash.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/i2c.h> #include <linux/mv643xx_eth.h> #include <linux/ata_platform.h> diff --git a/arch/arm/mach-kirkwood/tsx1x-common.c b/arch/arm/mach-kirkwood/tsx1x-common.c index 24294b2..8943ede 100644 --- a/arch/arm/mach-kirkwood/tsx1x-common.c +++ b/arch/arm/mach-kirkwood/tsx1x-common.c @@ -4,7 +4,6 @@ #include <linux/mtd/physmap.h> #include <linux/spi/flash.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/serial_reg.h> #include <mach/kirkwood.h> #include "common.h" diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c index a5dcf766..b4c53b8 100644 --- a/arch/arm/mach-mv78xx0/common.c +++ b/arch/arm/mach-mv78xx0/common.c @@ -13,6 +13,7 @@ #include <linux/platform_device.h> #include <linux/serial_8250.h> #include <linux/ata_platform.h> +#include <linux/clk-provider.h> #include <linux/ethtool.h> #include <asm/mach/map.h> #include <asm/mach/time.h> @@ -103,24 +104,24 @@ static void get_pclk_l2clk(int hclk, int core_index, int *pclk, int *l2clk) static int get_tclk(void) { - int tclk; + int tclk_freq; /* * TCLK tick rate is configured by DEV_A[2:0] strap pins. */ switch ((readl(SAMPLE_AT_RESET_HIGH) >> 6) & 7) { case 1: - tclk = 166666667; + tclk_freq = 166666667; break; case 3: - tclk = 200000000; + tclk_freq = 200000000; break; default: panic("unknown TCLK PLL setting: %.8x\n", readl(SAMPLE_AT_RESET_HIGH)); } - return tclk; + return tclk_freq; } @@ -166,6 +167,19 @@ void __init mv78xx0_map_io(void) /***************************************************************************** + * CLK tree + ****************************************************************************/ +static struct clk *tclk; + +static void __init clk_init(void) +{ + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, + get_tclk()); + + orion_clkdev_init(tclk); +} + +/***************************************************************************** * EHCI ****************************************************************************/ void __init mv78xx0_ehci0_init(void) @@ -199,7 +213,7 @@ void __init mv78xx0_ge00_init(struct mv643xx_eth_platform_data *eth_data) { orion_ge00_init(eth_data, GE00_PHYS_BASE, IRQ_MV78XX0_GE00_SUM, - IRQ_MV78XX0_GE_ERR, get_tclk()); + IRQ_MV78XX0_GE_ERR); } @@ -210,7 +224,7 @@ void __init mv78xx0_ge01_init(struct mv643xx_eth_platform_data *eth_data) { orion_ge01_init(eth_data, GE01_PHYS_BASE, IRQ_MV78XX0_GE01_SUM, - NO_IRQ, get_tclk()); + NO_IRQ); } @@ -234,7 +248,7 @@ void __init mv78xx0_ge10_init(struct mv643xx_eth_platform_data *eth_data) orion_ge10_init(eth_data, GE10_PHYS_BASE, IRQ_MV78XX0_GE10_SUM, - NO_IRQ, get_tclk()); + NO_IRQ); } @@ -258,7 +272,7 @@ void __init mv78xx0_ge11_init(struct mv643xx_eth_platform_data *eth_data) orion_ge11_init(eth_data, GE11_PHYS_BASE, IRQ_MV78XX0_GE11_SUM, - NO_IRQ, get_tclk()); + NO_IRQ); } /***************************************************************************** @@ -285,7 +299,7 @@ void __init mv78xx0_sata_init(struct mv_sata_platform_data *sata_data) void __init mv78xx0_uart0_init(void) { orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, - IRQ_MV78XX0_UART_0, get_tclk()); + IRQ_MV78XX0_UART_0, tclk); } @@ -295,7 +309,7 @@ void __init mv78xx0_uart0_init(void) void __init mv78xx0_uart1_init(void) { orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, - IRQ_MV78XX0_UART_1, get_tclk()); + IRQ_MV78XX0_UART_1, tclk); } @@ -305,7 +319,7 @@ void __init mv78xx0_uart1_init(void) void __init mv78xx0_uart2_init(void) { orion_uart2_init(UART2_VIRT_BASE, UART2_PHYS_BASE, - IRQ_MV78XX0_UART_2, get_tclk()); + IRQ_MV78XX0_UART_2, tclk); } /***************************************************************************** @@ -314,7 +328,7 @@ void __init mv78xx0_uart2_init(void) void __init mv78xx0_uart3_init(void) { orion_uart3_init(UART3_VIRT_BASE, UART3_PHYS_BASE, - IRQ_MV78XX0_UART_3, get_tclk()); + IRQ_MV78XX0_UART_3, tclk); } /***************************************************************************** @@ -378,25 +392,26 @@ void __init mv78xx0_init(void) int hclk; int pclk; int l2clk; - int tclk; core_index = mv78xx0_core_index(); hclk = get_hclk(); get_pclk_l2clk(hclk, core_index, &pclk, &l2clk); - tclk = get_tclk(); printk(KERN_INFO "%s ", mv78xx0_id()); printk("core #%d, ", core_index); printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000); printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000); printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000); - printk("TCLK = %dMHz\n", (tclk + 499999) / 1000000); + printk("TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000); mv78xx0_setup_cpu_mbus(); #ifdef CONFIG_CACHE_FEROCEON_L2 feroceon_l2_init(is_l2_writethrough()); #endif + + /* Setup root of clk tree */ + clk_init(); } void mv78xx0_restart(char mode, const char *cmd) diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c index 2448166..fd36e02 100644 --- a/arch/arm/mach-orion5x/common.c +++ b/arch/arm/mach-orion5x/common.c @@ -18,6 +18,7 @@ #include <linux/mv643xx_i2c.h> #include <linux/ata_platform.h> #include <linux/delay.h> +#include <linux/clk-provider.h> #include <net/dsa.h> #include <asm/page.h> #include <asm/setup.h> @@ -70,6 +71,19 @@ void __init orion5x_map_io(void) /***************************************************************************** + * CLK tree + ****************************************************************************/ +static struct clk *tclk; + +static void __init clk_init(void) +{ + tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, + orion5x_tclk); + + orion_clkdev_init(tclk); +} + +/***************************************************************************** * EHCI0 ****************************************************************************/ void __init orion5x_ehci0_init(void) @@ -95,7 +109,7 @@ void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data) { orion_ge00_init(eth_data, ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM, - IRQ_ORION5X_ETH_ERR, orion5x_tclk); + IRQ_ORION5X_ETH_ERR); } @@ -132,7 +146,7 @@ void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data) ****************************************************************************/ void __init orion5x_spi_init() { - orion_spi_init(SPI_PHYS_BASE, orion5x_tclk); + orion_spi_init(SPI_PHYS_BASE); } @@ -142,7 +156,7 @@ void __init orion5x_spi_init() void __init orion5x_uart0_init(void) { orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, - IRQ_ORION5X_UART0, orion5x_tclk); + IRQ_ORION5X_UART0, tclk); } /***************************************************************************** @@ -151,7 +165,7 @@ void __init orion5x_uart0_init(void) void __init orion5x_uart1_init(void) { orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, - IRQ_ORION5X_UART1, orion5x_tclk); + IRQ_ORION5X_UART1, tclk); } /***************************************************************************** @@ -179,7 +193,7 @@ static void __init orion5x_crypto_init(void) ****************************************************************************/ void __init orion5x_wdt_init(void) { - orion_wdt_init(orion5x_tclk); + orion_wdt_init(); } @@ -276,6 +290,9 @@ void __init orion5x_init(void) */ orion5x_setup_cpu_mbus_bridge(); + /* Setup root of clk tree */ + clk_init(); + /* * Don't issue "Wait for Interrupt" instruction if we are * running on D0 5281 silicon. diff --git a/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c b/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c index 2c5fab0..7b97a9a 100644 --- a/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c +++ b/arch/arm/mach-orion5x/rd88f6183ap-ge-setup.c @@ -16,7 +16,6 @@ #include <linux/mtd/physmap.h> #include <linux/mv643xx_eth.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/spi/flash.h> #include <linux/ethtool.h> #include <net/dsa.h> diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c index 74daf5e..61fd837 100644 --- a/arch/arm/plat-orion/common.c +++ b/arch/arm/plat-orion/common.c @@ -14,15 +14,41 @@ #include <linux/dma-mapping.h> #include <linux/serial_8250.h> #include <linux/ata_platform.h> +#include <linux/clk.h> +#include <linux/clkdev.h> #include <linux/mv643xx_eth.h> #include <linux/mv643xx_i2c.h> #include <net/dsa.h> -#include <linux/spi/orion_spi.h> -#include <plat/orion_wdt.h> #include <plat/mv_xor.h> #include <plat/ehci-orion.h> #include <mach/bridge-regs.h> +/* Create a clkdev entry for a given device/clk */ +void __init orion_clkdev_add(const char *con_id, const char *dev_id, + struct clk *clk) +{ + struct clk_lookup *cl; + + cl = clkdev_alloc(clk, con_id, dev_id); + if (cl) + clkdev_add(cl); +} + +/* Create clkdev entries for all orion platforms except kirkwood. + Kirkwood has gated clocks for some of its peripherals, so creates + its own clkdev entries. For all the other orion devices, create + clkdev entries to the tclk. */ +void __init orion_clkdev_init(struct clk *tclk) +{ + orion_clkdev_add(NULL, "orion_spi.0", tclk); + orion_clkdev_add(NULL, "orion_spi.1", tclk); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", tclk); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", tclk); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".2", tclk); + orion_clkdev_add(NULL, MV643XX_ETH_NAME ".3", tclk); + orion_clkdev_add(NULL, "orion_wdt", tclk); +} + /* Fill in the resources structure and link it into the platform device structure. There is always a memory region, and nearly always an interrupt.*/ @@ -49,6 +75,12 @@ static void fill_resources(struct platform_device *device, /***************************************************************************** * UART ****************************************************************************/ +static unsigned long __init uart_get_clk_rate(struct clk *clk) +{ + clk_prepare_enable(clk); + return clk_get_rate(clk); +} + static void __init uart_complete( struct platform_device *orion_uart, struct plat_serial8250_port *data, @@ -56,12 +88,12 @@ static void __init uart_complete( unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk) + struct clk *clk) { data->mapbase = mapbase; data->membase = (void __iomem *)membase; data->irq = irq; - data->uartclk = uartclk; + data->uartclk = uart_get_clk_rate(clk); orion_uart->dev.platform_data = data; fill_resources(orion_uart, resources, mapbase, 0xff, irq); @@ -90,10 +122,10 @@ static struct platform_device orion_uart0 = { void __init orion_uart0_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk) + struct clk *clk) { uart_complete(&orion_uart0, orion_uart0_data, orion_uart0_resources, - membase, mapbase, irq, uartclk); + membase, mapbase, irq, clk); } /***************************************************************************** @@ -118,10 +150,10 @@ static struct platform_device orion_uart1 = { void __init orion_uart1_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk) + struct clk *clk) { uart_complete(&orion_uart1, orion_uart1_data, orion_uart1_resources, - membase, mapbase, irq, uartclk); + membase, mapbase, irq, clk); } /***************************************************************************** @@ -146,10 +178,10 @@ static struct platform_device orion_uart2 = { void __init orion_uart2_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk) + struct clk *clk) { uart_complete(&orion_uart2, orion_uart2_data, orion_uart2_resources, - membase, mapbase, irq, uartclk); + membase, mapbase, irq, clk); } /***************************************************************************** @@ -174,10 +206,10 @@ static struct platform_device orion_uart3 = { void __init orion_uart3_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk) + struct clk *clk) { uart_complete(&orion_uart3, orion_uart3_data, orion_uart3_resources, - membase, mapbase, irq, uartclk); + membase, mapbase, irq, clk); } /***************************************************************************** @@ -203,13 +235,11 @@ void __init orion_rtc_init(unsigned long mapbase, ****************************************************************************/ static __init void ge_complete( struct mv643xx_eth_shared_platform_data *orion_ge_shared_data, - int tclk, struct resource *orion_ge_resource, unsigned long irq, struct platform_device *orion_ge_shared, struct mv643xx_eth_platform_data *eth_data, struct platform_device *orion_ge) { - orion_ge_shared_data->t_clk = tclk; orion_ge_resource->start = irq; orion_ge_resource->end = irq; eth_data->shared = orion_ge_shared; @@ -260,12 +290,11 @@ static struct platform_device orion_ge00 = { void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk) + unsigned long irq_err) { fill_resources(&orion_ge00_shared, orion_ge00_shared_resources, mapbase + 0x2000, SZ_16K - 1, irq_err); - ge_complete(&orion_ge00_shared_data, tclk, + ge_complete(&orion_ge00_shared_data, orion_ge00_resources, irq, &orion_ge00_shared, eth_data, &orion_ge00); } @@ -313,12 +342,11 @@ static struct platform_device orion_ge01 = { void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk) + unsigned long irq_err) { fill_resources(&orion_ge01_shared, orion_ge01_shared_resources, mapbase + 0x2000, SZ_16K - 1, irq_err); - ge_complete(&orion_ge01_shared_data, tclk, + ge_complete(&orion_ge01_shared_data, orion_ge01_resources, irq, &orion_ge01_shared, eth_data, &orion_ge01); } @@ -366,12 +394,11 @@ static struct platform_device orion_ge10 = { void __init orion_ge10_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk) + unsigned long irq_err) { fill_resources(&orion_ge10_shared, orion_ge10_shared_resources, mapbase + 0x2000, SZ_16K - 1, irq_err); - ge_complete(&orion_ge10_shared_data, tclk, + ge_complete(&orion_ge10_shared_data, orion_ge10_resources, irq, &orion_ge10_shared, eth_data, &orion_ge10); } @@ -419,12 +446,11 @@ static struct platform_device orion_ge11 = { void __init orion_ge11_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk) + unsigned long irq_err) { fill_resources(&orion_ge11_shared, orion_ge11_shared_resources, mapbase + 0x2000, SZ_16K - 1, irq_err); - ge_complete(&orion_ge11_shared_data, tclk, + ge_complete(&orion_ge11_shared_data, orion_ge11_resources, irq, &orion_ge11_shared, eth_data, &orion_ge11); } @@ -521,44 +547,32 @@ void __init orion_i2c_1_init(unsigned long mapbase, /***************************************************************************** * SPI ****************************************************************************/ -static struct orion_spi_info orion_spi_plat_data; static struct resource orion_spi_resources; static struct platform_device orion_spi = { .name = "orion_spi", .id = 0, - .dev = { - .platform_data = &orion_spi_plat_data, - }, }; -static struct orion_spi_info orion_spi_1_plat_data; static struct resource orion_spi_1_resources; static struct platform_device orion_spi_1 = { .name = "orion_spi", .id = 1, - .dev = { - .platform_data = &orion_spi_1_plat_data, - }, }; /* Note: The SPI silicon core does have interrupts. However the * current Linux software driver does not use interrupts. */ -void __init orion_spi_init(unsigned long mapbase, - unsigned long tclk) +void __init orion_spi_init(unsigned long mapbase) { - orion_spi_plat_data.tclk = tclk; fill_resources(&orion_spi, &orion_spi_resources, mapbase, SZ_512 - 1, NO_IRQ); platform_device_register(&orion_spi); } -void __init orion_spi_1_init(unsigned long mapbase, - unsigned long tclk) +void __init orion_spi_1_init(unsigned long mapbase) { - orion_spi_1_plat_data.tclk = tclk; fill_resources(&orion_spi_1, &orion_spi_1_resources, mapbase, SZ_512 - 1, NO_IRQ); platform_device_register(&orion_spi_1); @@ -567,24 +581,18 @@ void __init orion_spi_1_init(unsigned long mapbase, /***************************************************************************** * Watchdog ****************************************************************************/ -static struct orion_wdt_platform_data orion_wdt_data; - static struct resource orion_wdt_resource = DEFINE_RES_MEM(TIMER_VIRT_BASE, 0x28); static struct platform_device orion_wdt_device = { .name = "orion_wdt", .id = -1, - .dev = { - .platform_data = &orion_wdt_data, - }, - .resource = &orion_wdt_resource, .num_resources = 1, + .resource = &orion_wdt_resource, }; -void __init orion_wdt_init(unsigned long tclk) +void __init orion_wdt_init(void) { - orion_wdt_data.tclk = tclk; platform_device_register(&orion_wdt_device); } diff --git a/arch/arm/plat-orion/include/plat/common.h b/arch/arm/plat-orion/include/plat/common.h index a7fa005..e00fdb2 100644 --- a/arch/arm/plat-orion/include/plat/common.h +++ b/arch/arm/plat-orion/include/plat/common.h @@ -16,22 +16,22 @@ struct dsa_platform_data; void __init orion_uart0_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk); + struct clk *clk); void __init orion_uart1_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk); + struct clk *clk); void __init orion_uart2_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk); + struct clk *clk); void __init orion_uart3_init(unsigned int membase, resource_size_t mapbase, unsigned int irq, - unsigned int uartclk); + struct clk *clk); void __init orion_rtc_init(unsigned long mapbase, unsigned long irq); @@ -39,29 +39,26 @@ void __init orion_rtc_init(unsigned long mapbase, void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk); + unsigned long irq_err); void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk); + unsigned long irq_err); void __init orion_ge10_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk); + unsigned long irq_err); void __init orion_ge11_init(struct mv643xx_eth_platform_data *eth_data, unsigned long mapbase, unsigned long irq, - unsigned long irq_err, - int tclk); + unsigned long irq_err); void __init orion_ge00_switch_init(struct dsa_platform_data *d, int irq); + void __init orion_i2c_init(unsigned long mapbase, unsigned long irq, unsigned long freq_m); @@ -70,13 +67,11 @@ void __init orion_i2c_1_init(unsigned long mapbase, unsigned long irq, unsigned long freq_m); -void __init orion_spi_init(unsigned long mapbase, - unsigned long tclk); +void __init orion_spi_init(unsigned long mapbase); -void __init orion_spi_1_init(unsigned long mapbase, - unsigned long tclk); +void __init orion_spi_1_init(unsigned long mapbase); -void __init orion_wdt_init(unsigned long tclk); +void __init orion_wdt_init(void); void __init orion_xor0_init(unsigned long mapbase_low, unsigned long mapbase_high, @@ -106,4 +101,9 @@ void __init orion_crypto_init(unsigned long mapbase, unsigned long srambase, unsigned long sram_size, unsigned long irq); + +void __init orion_clkdev_add(const char *con_id, const char *dev_id, + struct clk *clk); + +void __init orion_clkdev_init(struct clk *tclk); #endif diff --git a/arch/arm/plat-orion/include/plat/orion_wdt.h b/arch/arm/plat-orion/include/plat/orion_wdt.h deleted file mode 100644 index 665c362..0000000 --- a/arch/arm/plat-orion/include/plat/orion_wdt.h +++ /dev/null @@ -1,18 +0,0 @@ -/* - * arch/arm/plat-orion/include/plat/orion_wdt.h - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __PLAT_ORION_WDT_H -#define __PLAT_ORION_WDT_H - -struct orion_wdt_platform_data { - u32 tclk; /* no <linux/clk.h> support yet */ -}; - - -#endif - diff --git a/arch/arm/plat-orion/pcie.c b/arch/arm/plat-orion/pcie.c index 86dbb5b..f20a321 100644 --- a/arch/arm/plat-orion/pcie.c +++ b/arch/arm/plat-orion/pcie.c @@ -52,12 +52,12 @@ #define PCIE_DEBUG_SOFT_RESET (1<<20) -u32 __init orion_pcie_dev_id(void __iomem *base) +u32 orion_pcie_dev_id(void __iomem *base) { return readl(base + PCIE_DEV_ID_OFF) >> 16; } -u32 __init orion_pcie_rev(void __iomem *base) +u32 orion_pcie_rev(void __iomem *base) { return readl(base + PCIE_DEV_REV_OFF) & 0xff; } diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 7336d4a..24712ad 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -553,6 +553,7 @@ struct mv_host_priv { #if defined(CONFIG_HAVE_CLK) struct clk *clk; + struct clk **port_clks; #endif /* * These consistent DMA memory pools give us guaranteed @@ -4027,6 +4028,9 @@ static int mv_platform_probe(struct platform_device *pdev) struct resource *res; int n_ports = 0; int rc; +#if defined(CONFIG_HAVE_CLK) + int port; +#endif ata_print_version_once(&pdev->dev, DRV_VERSION); @@ -4054,6 +4058,13 @@ static int mv_platform_probe(struct platform_device *pdev) if (!host || !hpriv) return -ENOMEM; +#if defined(CONFIG_HAVE_CLK) + hpriv->port_clks = devm_kzalloc(&pdev->dev, + sizeof(struct clk *) * n_ports, + GFP_KERNEL); + if (!hpriv->port_clks) + return -ENOMEM; +#endif host->private_data = hpriv; hpriv->n_ports = n_ports; hpriv->board_idx = chip_soc; @@ -4066,9 +4077,17 @@ static int mv_platform_probe(struct platform_device *pdev) #if defined(CONFIG_HAVE_CLK) hpriv->clk = clk_get(&pdev->dev, NULL); if (IS_ERR(hpriv->clk)) - dev_notice(&pdev->dev, "cannot get clkdev\n"); + dev_notice(&pdev->dev, "cannot get optional clkdev\n"); else - clk_enable(hpriv->clk); + clk_prepare_enable(hpriv->clk); + + for (port = 0; port < n_ports; port++) { + char port_number[16]; + sprintf(port_number, "%d", port); + hpriv->port_clks[port] = clk_get(&pdev->dev, port_number); + if (!IS_ERR(hpriv->port_clks[port])) + clk_prepare_enable(hpriv->port_clks[port]); + } #endif /* @@ -4098,9 +4117,15 @@ static int mv_platform_probe(struct platform_device *pdev) err: #if defined(CONFIG_HAVE_CLK) if (!IS_ERR(hpriv->clk)) { - clk_disable(hpriv->clk); + clk_disable_unprepare(hpriv->clk); clk_put(hpriv->clk); } + for (port = 0; port < n_ports; port++) { + if (!IS_ERR(hpriv->port_clks[port])) { + clk_disable_unprepare(hpriv->port_clks[port]); + clk_put(hpriv->port_clks[port]); + } + } #endif return rc; @@ -4119,14 +4144,21 @@ static int __devexit mv_platform_remove(struct platform_device *pdev) struct ata_host *host = platform_get_drvdata(pdev); #if defined(CONFIG_HAVE_CLK) struct mv_host_priv *hpriv = host->private_data; + int port; #endif ata_host_detach(host); #if defined(CONFIG_HAVE_CLK) if (!IS_ERR(hpriv->clk)) { - clk_disable(hpriv->clk); + clk_disable_unprepare(hpriv->clk); clk_put(hpriv->clk); } + for (port = 0; port < host->n_ports; port++) { + if (!IS_ERR(hpriv->port_clks[port])) { + clk_disable_unprepare(hpriv->port_clks[port]); + clk_put(hpriv->port_clks[port]); + } + } #endif return 0; } diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index e5d5dc1..687b00d 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -903,7 +903,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) if (rate == clk->rate) goto out; - if ((clk->flags & CLK_SET_RATE_GATE) && __clk_is_enabled(clk)) { + if ((clk->flags & CLK_SET_RATE_GATE) && clk->prepare_count) { ret = -EBUSY; goto out; } @@ -1420,6 +1420,15 @@ fail_out: } EXPORT_SYMBOL_GPL(clk_register); +/** + * clk_unregister - unregister a currently registered clock + * @clk: clock to unregister + * + * Currently unimplemented. + */ +void clk_unregister(struct clk *clk) {} +EXPORT_SYMBOL_GPL(clk_unregister); + /*** clk rate change notifiers ***/ /** diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c index e6ecc5f..1cc6b3f 100644 --- a/drivers/crypto/mv_cesa.c +++ b/drivers/crypto/mv_cesa.c @@ -16,6 +16,7 @@ #include <linux/scatterlist.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/clk.h> #include <crypto/internal/hash.h> #include <crypto/sha.h> @@ -79,6 +80,7 @@ struct crypto_priv { void __iomem *reg; void __iomem *sram; int irq; + struct clk *clk; struct task_struct *queue_th; /* the lock protects queue and eng_st */ @@ -1053,6 +1055,12 @@ static int mv_probe(struct platform_device *pdev) if (ret) goto err_thread; + /* Not all platforms can gate the clock, so it is not + an error if the clock does not exists. */ + cp->clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(cp->clk)) + clk_prepare_enable(cp->clk); + writel(SEC_INT_ACCEL0_DONE, cpg->reg + SEC_ACCEL_INT_MASK); writel(SEC_CFG_STOP_DIG_ERR, cpg->reg + SEC_ACCEL_CFG); writel(SRAM_CONFIG, cpg->reg + SEC_ACCEL_DESC_P0); @@ -1118,6 +1126,12 @@ static int mv_remove(struct platform_device *pdev) memset(cp->sram, 0, cp->sram_size); iounmap(cp->sram); iounmap(cp->reg); + + if (!IS_ERR(cp->clk)) { + clk_disable_unprepare(cp->clk); + clk_put(cp->clk); + } + kfree(cp); cpg = NULL; return 0; diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index fa5d55f..0b12e68 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -25,6 +25,7 @@ #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/memory.h> +#include <linux/clk.h> #include <plat/mv_xor.h> #include "dmaengine.h" @@ -1307,11 +1308,25 @@ static int mv_xor_shared_probe(struct platform_device *pdev) if (dram) mv_xor_conf_mbus_windows(msp, dram); + /* Not all platforms can gate the clock, so it is not + * an error if the clock does not exists. + */ + msp->clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(msp->clk)) + clk_prepare_enable(msp->clk); + return 0; } static int mv_xor_shared_remove(struct platform_device *pdev) { + struct mv_xor_shared_private *msp = platform_get_drvdata(pdev); + + if (!IS_ERR(msp->clk)) { + clk_disable_unprepare(msp->clk); + clk_put(msp->clk); + } + return 0; } diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h index 654876b..a5b422f 100644 --- a/drivers/dma/mv_xor.h +++ b/drivers/dma/mv_xor.h @@ -55,6 +55,7 @@ struct mv_xor_shared_private { void __iomem *xor_base; void __iomem *xor_high_base; + struct clk *clk; }; diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index eeb8cd1..3b9136c 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -19,6 +19,7 @@ #include <linux/dma-mapping.h> #include <linux/scatterlist.h> #include <linux/irq.h> +#include <linux/clk.h> #include <linux/gpio.h> #include <linux/mmc/host.h> @@ -51,6 +52,7 @@ struct mvsd_host { struct device *dev; struct resource *res; int irq; + struct clk *clk; int gpio_card_detect; int gpio_write_protect; }; @@ -770,6 +772,13 @@ static int __init mvsd_probe(struct platform_device *pdev) } else host->irq = irq; + /* Not all platforms can gate the clock, so it is not + an error if the clock does not exists. */ + host->clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(host->clk)) { + clk_prepare_enable(host->clk); + } + if (mvsd_data->gpio_card_detect) { ret = gpio_request(mvsd_data->gpio_card_detect, DRIVER_NAME " cd"); @@ -854,6 +863,11 @@ static int __exit mvsd_remove(struct platform_device *pdev) mvsd_power_down(host); iounmap(host->base); release_resource(host->res); + + if (!IS_ERR(host->clk)) { + clk_disable_unprepare(host->clk); + clk_put(host->clk); + } mmc_free_host(mmc); } platform_set_drvdata(pdev, NULL); diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 1d3bfb2..fdc4786 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -16,6 +16,8 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> +#include <linux/clk.h> +#include <linux/err.h> #include <asm/io.h> #include <asm/sizes.h> #include <mach/hardware.h> @@ -77,6 +79,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) struct nand_chip *nc; struct orion_nand_data *board; struct resource *res; + struct clk *clk; void __iomem *io_base; int ret = 0; @@ -123,6 +126,14 @@ static int __init orion_nand_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mtd); + /* Not all platforms can gate the clock, so it is not + an error if the clock does not exists. */ + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_prepare_enable(clk); + clk_put(clk); + } + if (nand_scan(mtd, 1)) { ret = -ENXIO; goto no_dev; @@ -151,6 +162,7 @@ static int __devexit orion_nand_remove(struct platform_device *pdev) { struct mtd_info *mtd = platform_get_drvdata(pdev); struct nand_chip *nc = mtd->priv; + struct clk *clk; nand_release(mtd); @@ -158,6 +170,12 @@ static int __devexit orion_nand_remove(struct platform_device *pdev) kfree(nc); + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_disable_unprepare(clk); + clk_put(clk); + } + return 0; } diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index 5e1ca0f..99cd233 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -57,6 +57,7 @@ #include <linux/types.h> #include <linux/inet_lro.h> #include <linux/slab.h> +#include <linux/clk.h> static char mv643xx_eth_driver_name[] = "mv643xx_eth"; static char mv643xx_eth_driver_version[] = "1.4"; @@ -289,10 +290,10 @@ struct mv643xx_eth_shared_private { /* * Hardware-specific parameters. */ - unsigned int t_clk; int extended_rx_coal_limit; int tx_bw_control; int tx_csum_limit; + }; #define TX_BW_CONTROL_ABSENT 0 @@ -431,6 +432,12 @@ struct mv643xx_eth_private { int tx_desc_sram_size; int txq_count; struct tx_queue txq[8]; + + /* + * Hardware-specific parameters. + */ + struct clk *clk; + unsigned int t_clk; }; @@ -1010,7 +1017,7 @@ static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) int mtu; int bucket_size; - token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); + token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000); if (token_rate > 1023) token_rate = 1023; @@ -1042,7 +1049,7 @@ static void txq_set_rate(struct tx_queue *txq, int rate, int burst) int token_rate; int bucket_size; - token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); + token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000); if (token_rate > 1023) token_rate = 1023; @@ -1309,7 +1316,7 @@ static unsigned int get_rx_coal(struct mv643xx_eth_private *mp) temp = (val & 0x003fff00) >> 8; temp *= 64000000; - do_div(temp, mp->shared->t_clk); + do_div(temp, mp->t_clk); return (unsigned int)temp; } @@ -1319,7 +1326,7 @@ static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec) u64 temp; u32 val; - temp = (u64)usec * mp->shared->t_clk; + temp = (u64)usec * mp->t_clk; temp += 31999999; do_div(temp, 64000000); @@ -1345,7 +1352,7 @@ static unsigned int get_tx_coal(struct mv643xx_eth_private *mp) temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4; temp *= 64000000; - do_div(temp, mp->shared->t_clk); + do_div(temp, mp->t_clk); return (unsigned int)temp; } @@ -1354,7 +1361,7 @@ static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec) { u64 temp; - temp = (u64)usec * mp->shared->t_clk; + temp = (u64)usec * mp->t_clk; temp += 31999999; do_div(temp, 64000000); @@ -2662,10 +2669,6 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev) if (dram) mv643xx_eth_conf_mbus_windows(msp, dram); - /* - * Detect hardware parameters. - */ - msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ? pd->tx_csum_limit : 9 * 1024; infer_hw_params(msp); @@ -2890,6 +2893,18 @@ static int mv643xx_eth_probe(struct platform_device *pdev) mp->dev = dev; + /* + * Get the clk rate, if there is one, otherwise use the default. + */ + mp->clk = clk_get(&pdev->dev, (pdev->id ? "1" : "0")); + if (!IS_ERR(mp->clk)) { + clk_prepare_enable(mp->clk); + mp->t_clk = clk_get_rate(mp->clk); + } else { + mp->t_clk = 133000000; + printk(KERN_WARNING "Unable to get clock"); + } + set_params(mp, pd); netif_set_real_num_tx_queues(dev, mp->txq_count); netif_set_real_num_rx_queues(dev, mp->rxq_count); @@ -2978,6 +2993,11 @@ static int mv643xx_eth_remove(struct platform_device *pdev) if (mp->phy != NULL) phy_detach(mp->phy); cancel_work_sync(&mp->tx_timeout_task); + + if (!IS_ERR(mp->clk)) { + clk_disable_unprepare(mp->clk); + clk_put(mp->clk); + } free_netdev(mp->dev); platform_set_drvdata(pdev, NULL); diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index e496f79..dfd04e9 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -16,8 +16,8 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/module.h> +#include <linux/clk.h> #include <asm/unaligned.h> #define DRIVER_NAME "orion_spi" @@ -46,6 +46,7 @@ struct orion_spi { unsigned int max_speed; unsigned int min_speed; struct orion_spi_info *spi_info; + struct clk *clk; }; static struct workqueue_struct *orion_spi_wq; @@ -104,7 +105,7 @@ static int orion_spi_baudrate_set(struct spi_device *spi, unsigned int speed) orion_spi = spi_master_get_devdata(spi->master); - tclk_hz = orion_spi->spi_info->tclk; + tclk_hz = clk_get_rate(orion_spi->clk); /* * the supported rates are: 4,6,8...30 @@ -450,6 +451,7 @@ static int __init orion_spi_probe(struct platform_device *pdev) struct orion_spi *spi; struct resource *r; struct orion_spi_info *spi_info; + unsigned long tclk_hz; int status = 0; spi_info = pdev->dev.platform_data; @@ -476,19 +478,28 @@ static int __init orion_spi_probe(struct platform_device *pdev) spi->master = master; spi->spi_info = spi_info; - spi->max_speed = DIV_ROUND_UP(spi_info->tclk, 4); - spi->min_speed = DIV_ROUND_UP(spi_info->tclk, 30); + spi->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(spi->clk)) { + status = PTR_ERR(spi->clk); + goto out; + } + + clk_prepare(spi->clk); + clk_enable(spi->clk); + tclk_hz = clk_get_rate(spi->clk); + spi->max_speed = DIV_ROUND_UP(tclk_hz, 4); + spi->min_speed = DIV_ROUND_UP(tclk_hz, 30); r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (r == NULL) { status = -ENODEV; - goto out; + goto out_rel_clk; } if (!request_mem_region(r->start, resource_size(r), dev_name(&pdev->dev))) { status = -EBUSY; - goto out; + goto out_rel_clk; } spi->base = ioremap(r->start, SZ_1K); @@ -508,7 +519,9 @@ static int __init orion_spi_probe(struct platform_device *pdev) out_rel_mem: release_mem_region(r->start, resource_size(r)); - +out_rel_clk: + clk_disable_unprepare(spi->clk); + clk_put(spi->clk); out: spi_master_put(master); return status; @@ -526,6 +539,9 @@ static int __exit orion_spi_remove(struct platform_device *pdev) cancel_work_sync(&spi->work); + clk_disable_unprepare(spi->clk); + clk_put(spi->clk); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(r->start, resource_size(r)); diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 6c6a5a3..82de107 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/mbus.h> +#include <linux/clk.h> #include <plat/ehci-orion.h> #define rdl(off) __raw_readl(hcd->regs + (off)) @@ -198,6 +199,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) struct resource *res; struct usb_hcd *hcd; struct ehci_hcd *ehci; + struct clk *clk; void __iomem *regs; int irq, err; @@ -238,6 +240,14 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) goto err2; } + /* Not all platforms can gate the clock, so it is not + an error if the clock does not exists. */ + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_prepare_enable(clk); + clk_put(clk); + } + hcd = usb_create_hcd(&ehci_orion_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { @@ -301,12 +311,18 @@ err1: static int __exit ehci_orion_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct clk *clk; usb_remove_hcd(hcd); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_disable_unprepare(clk); + clk_put(clk); + } return 0; } diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 788aa15..0f57369 100644 --- a/drivers/watchdog/orion_wdt.c +++ b/drivers/watchdog/orion_wdt.c @@ -24,8 +24,8 @@ #include <linux/uaccess.h> #include <linux/io.h> #include <linux/spinlock.h> +#include <linux/clk.h> #include <mach/bridge-regs.h> -#include <plat/orion_wdt.h> /* * Watchdog timer block registers. @@ -41,6 +41,7 @@ static bool nowayout = WATCHDOG_NOWAYOUT; static int heartbeat = -1; /* module parameter (seconds) */ static unsigned int wdt_max_duration; /* (seconds) */ +static struct clk *clk; static unsigned int wdt_tclk; static void __iomem *wdt_reg; static unsigned long wdt_status; @@ -237,16 +238,16 @@ static struct miscdevice orion_wdt_miscdev = { static int __devinit orion_wdt_probe(struct platform_device *pdev) { - struct orion_wdt_platform_data *pdata = pdev->dev.platform_data; struct resource *res; int ret; - if (pdata) { - wdt_tclk = pdata->tclk; - } else { - pr_err("misses platform data\n"); + clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(clk)) { + printk(KERN_ERR "Orion Watchdog missing clock\n"); return -ENODEV; } + clk_prepare_enable(clk); + wdt_tclk = clk_get_rate(clk); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -282,6 +283,9 @@ static int __devexit orion_wdt_remove(struct platform_device *pdev) if (!ret) orion_wdt_miscdev.parent = NULL; + clk_disable_unprepare(clk); + clk_put(clk); + return ret; } diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index c1c23b9..4a0b483 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -312,6 +312,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name, */ struct clk *clk_register(struct device *dev, struct clk_hw *hw); +void clk_unregister(struct clk *clk); + /* helper functions */ const char *__clk_get_name(struct clk *clk); struct clk_hw *__clk_get_hw(struct clk *clk); diff --git a/include/linux/mv643xx_eth.h b/include/linux/mv643xx_eth.h index 30b0c4e..51bf8ad 100644 --- a/include/linux/mv643xx_eth.h +++ b/include/linux/mv643xx_eth.h @@ -18,7 +18,6 @@ struct mv643xx_eth_shared_platform_data { struct mbus_dram_target_info *dram; struct platform_device *shared_smi; - unsigned int t_clk; /* * Max packet size for Tx IP/Layer 4 checksum, when set to 0, default * limit of 9KiB will be used. diff --git a/include/linux/spi/orion_spi.h b/include/linux/spi/orion_spi.h deleted file mode 100644 index b4d9fa6..0000000 --- a/include/linux/spi/orion_spi.h +++ /dev/null @@ -1,17 +0,0 @@ -/* - * orion_spi.h - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __LINUX_SPI_ORION_SPI_H -#define __LINUX_SPI_ORION_SPI_H - -struct orion_spi_info { - u32 tclk; /* no <linux/clk.h> support yet */ -}; - - -#endif diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c index 3cb9aa4..fa45567 100644 --- a/sound/soc/kirkwood/kirkwood-i2s.c +++ b/sound/soc/kirkwood/kirkwood-i2s.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/mbus.h> #include <linux/delay.h> +#include <linux/clk.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> @@ -449,6 +450,14 @@ static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev) priv->burst = data->burst; + priv->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(priv->clk)) { + dev_err(&pdev->dev, "no clock\n"); + err = PTR_ERR(priv->clk); + goto err_ioremap; + } + clk_prepare_enable(priv->clk); + return snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai); err_ioremap: @@ -466,6 +475,10 @@ static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev) struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); snd_soc_unregister_dai(&pdev->dev); + + clk_disable_unprepare(priv->clk); + clk_put(priv->clk); + iounmap(priv->io); release_mem_region(priv->mem->start, SZ_16K); kfree(priv); diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h index 9047436..f9084d8 100644 --- a/sound/soc/kirkwood/kirkwood.h +++ b/sound/soc/kirkwood/kirkwood.h @@ -123,6 +123,7 @@ struct kirkwood_dma_data { void __iomem *io; int irq; int burst; + struct clk *clk; }; #endif |