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-rw-r--r--drivers/ata/sata_mv.c40
-rw-r--r--drivers/clk/clk.c11
-rw-r--r--drivers/crypto/mv_cesa.c14
-rw-r--r--drivers/dma/mv_xor.c15
-rw-r--r--drivers/dma/mv_xor.h1
-rw-r--r--drivers/mmc/host/mvsdio.c14
-rw-r--r--drivers/mtd/nand/orion_nand.c18
-rw-r--r--drivers/net/ethernet/marvell/mv643xx_eth.c42
-rw-r--r--drivers/spi/spi-orion.c30
-rw-r--r--drivers/usb/host/ehci-orion.c16
-rw-r--r--drivers/watchdog/orion_wdt.c16
11 files changed, 188 insertions, 29 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 7336d4a7ab31..24712adf69df 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 e5d5dc13bcfd..687b00d67c8a 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 e6ecc5f23943..1cc6b3f3e262 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 fa5d55fea46c..0b12e68bf79c 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 654876b7ba1d..a5b422f5a8ab 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 eeb8cd125b0c..3b9136c1a475 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 1d3bfb26080c..fdc4786ea3e5 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 5e1ca0f05090..99cd233266ac 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 e496f799b7a9..dfd04e91fa6d 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 6c6a5a3b4ea7..82de1073aa52 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 788aa158e78c..0f5736949c61 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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-24 00:36:16 +0000