MULTIFUNCTION DEVICES (MFD)
P: Samuel Ortiz
-M: sameo@openedhand.com
+M: sameo@linux.intel.com
L: linux-kernel@vger.kernel.org
+T: git kernel.org:/pub/scm/linux/kernel/git/sameo/mfd-2.6.git
S: Supported
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
};
static struct pasic3_platform_data pasic3_platform_data = {
- .bus_shift = 2,
.led_pdata = &pasic3_leds_info,
.clock_rate = 4000000,
};
config HTC_PASIC3
tristate "HTC PASIC3 LED/DS1WM chip support"
+ select MFD_CORE
help
This core driver provides register access for the LED/DS1WM
chips labeled "AIC2" and "AIC3", found on HTC Blueangel and
enable_irq(chip->client->irq);
}
-static int da903x_irq_handler(int irq, void *data)
+static irqreturn_t da903x_irq_handler(int irq, void *data)
{
struct da903x_chip *chip = data;
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/ds1wm.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/ds1wm.h>
#include <linux/mfd/htc-pasic3.h>
struct pasic3_data {
void __iomem *mapping;
unsigned int bus_shift;
- struct platform_device *ds1wm_pdev;
- struct platform_device *led_pdev;
};
#define REG_ADDR 5
* LEDs
*/
-static int led_device_add(struct device *pasic3_dev,
- const struct pasic3_leds_machinfo *pdata)
-{
- struct pasic3_data *asic = pasic3_dev->driver_data;
- struct platform_device *pdev;
- int ret;
-
- pdev = platform_device_alloc("pasic3-led", -1);
- if (!pdev) {
- dev_dbg(pasic3_dev, "failed to allocate LED platform device\n");
- return -ENOMEM;
- }
-
- ret = platform_device_add_data(pdev, pdata,
- sizeof(struct pasic3_leds_machinfo));
- if (ret < 0) {
- dev_dbg(pasic3_dev, "failed to add LED platform data\n");
- goto exit_pdev_put;
- }
-
- pdev->dev.parent = pasic3_dev;
- ret = platform_device_add(pdev);
- if (ret < 0) {
- dev_dbg(pasic3_dev, "failed to add LED platform device\n");
- goto exit_pdev_put;
- }
-
- asic->led_pdev = pdev;
- return 0;
-
-exit_pdev_put:
- platform_device_put(pdev);
- return ret;
-}
+static struct mfd_cell led_cell __initdata = {
+ .name = "leds-pasic3",
+};
/*
* DS1WM
*/
-static void ds1wm_enable(struct platform_device *pdev)
+static int ds1wm_enable(struct platform_device *pdev)
{
struct device *dev = pdev->dev.parent;
int c;
pasic3_write_register(dev, 0x28, c & 0x7f);
dev_dbg(dev, "DS1WM OWM_EN low (active) %02x\n", c & 0x7f);
+ return 0;
}
-static void ds1wm_disable(struct platform_device *pdev)
+static int ds1wm_disable(struct platform_device *pdev)
{
struct device *dev = pdev->dev.parent;
int c;
pasic3_write_register(dev, 0x28, c | 0x80);
dev_dbg(dev, "DS1WM OWM_EN high (inactive) %02x\n", c | 0x80);
+ return 0;
}
-static struct ds1wm_platform_data ds1wm_pdata = {
- .bus_shift = 2,
- .enable = ds1wm_enable,
- .disable = ds1wm_disable,
+static struct ds1wm_driver_data ds1wm_pdata = {
+ .active_high = 0,
};
-static int ds1wm_device_add(struct platform_device *pasic3_pdev, int bus_shift)
-{
- struct device *pasic3_dev = &pasic3_pdev->dev;
- struct pasic3_data *asic = pasic3_dev->driver_data;
- struct platform_device *pdev;
- int ret;
-
- pdev = platform_device_alloc("ds1wm", -1);
- if (!pdev) {
- dev_dbg(pasic3_dev, "failed to allocate DS1WM platform device\n");
- return -ENOMEM;
- }
-
- ret = platform_device_add_resources(pdev, pasic3_pdev->resource,
- pasic3_pdev->num_resources);
- if (ret < 0) {
- dev_dbg(pasic3_dev, "failed to add DS1WM resources\n");
- goto exit_pdev_put;
- }
-
- ds1wm_pdata.bus_shift = asic->bus_shift;
- ret = platform_device_add_data(pdev, &ds1wm_pdata,
- sizeof(struct ds1wm_platform_data));
- if (ret < 0) {
- dev_dbg(pasic3_dev, "failed to add DS1WM platform data\n");
- goto exit_pdev_put;
- }
-
- pdev->dev.parent = pasic3_dev;
- ret = platform_device_add(pdev);
- if (ret < 0) {
- dev_dbg(pasic3_dev, "failed to add DS1WM platform device\n");
- goto exit_pdev_put;
- }
-
- asic->ds1wm_pdev = pdev;
- return 0;
+static struct resource ds1wm_resources[] __initdata = {
+ [0] = {
+ .start = 0,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
-exit_pdev_put:
- platform_device_put(pdev);
- return ret;
-}
+static struct mfd_cell ds1wm_cell __initdata = {
+ .name = "ds1wm",
+ .enable = ds1wm_enable,
+ .disable = ds1wm_disable,
+ .driver_data = &ds1wm_pdata,
+ .num_resources = 2,
+ .resources = ds1wm_resources,
+};
static int __init pasic3_probe(struct platform_device *pdev)
{
struct pasic3_data *asic;
struct resource *r;
int ret;
+ int irq = 0;
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r) {
+ ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &
+ (IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));
+ irq = r->start;
+ }
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r) {
+ ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &
+ (IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));
+ irq = r->start;
+ }
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r)
return -ENXIO;
- if (!request_mem_region(r->start, r->end - r->start + 1, "pasic3"))
+ if (!request_mem_region(r->start, resource_size(r), "pasic3"))
return -EBUSY;
asic = kzalloc(sizeof(struct pasic3_data), GFP_KERNEL);
platform_set_drvdata(pdev, asic);
- if (pdata && pdata->bus_shift)
- asic->bus_shift = pdata->bus_shift;
- else
- asic->bus_shift = 2;
-
- asic->mapping = ioremap(r->start, r->end - r->start + 1);
+ asic->mapping = ioremap(r->start, resource_size(r));
if (!asic->mapping) {
dev_err(dev, "couldn't ioremap PASIC3\n");
kfree(asic);
return -ENOMEM;
}
- ret = ds1wm_device_add(pdev, asic->bus_shift);
- if (ret < 0)
- dev_warn(dev, "failed to register DS1WM\n");
+ /* calculate bus shift from mem resource */
+ asic->bus_shift = (resource_size(r) - 5) >> 3;
+
+ if (pdata && pdata->clock_rate) {
+ ds1wm_pdata.clock_rate = pdata->clock_rate;
+ /* the first 5 PASIC3 registers control the DS1WM */
+ ds1wm_resources[0].end = (5 << asic->bus_shift) - 1;
+ ds1wm_cell.platform_data = &ds1wm_cell;
+ ds1wm_cell.data_size = sizeof(ds1wm_cell);
+ ret = mfd_add_devices(&pdev->dev, pdev->id,
+ &ds1wm_cell, 1, r, irq);
+ if (ret < 0)
+ dev_warn(dev, "failed to register DS1WM\n");
+ }
- if (pdata->led_pdata) {
- ret = led_device_add(dev, pdata->led_pdata);
+ if (pdata && pdata->led_pdata) {
+ led_cell.driver_data = pdata->led_pdata;
+ led_cell.platform_data = &led_cell;
+ led_cell.data_size = sizeof(ds1wm_cell);
+ ret = mfd_add_devices(&pdev->dev, pdev->id, &led_cell, 1, r, 0);
if (ret < 0)
dev_warn(dev, "failed to register LED device\n");
}
struct pasic3_data *asic = platform_get_drvdata(pdev);
struct resource *r;
- if (asic->led_pdev)
- platform_device_unregister(asic->led_pdev);
- if (asic->ds1wm_pdev)
- platform_device_unregister(asic->ds1wm_pdev);
+ mfd_remove_devices(&pdev->dev);
iounmap(asic->mapping);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(r->start, r->end - r->start + 1);
+ release_mem_region(r->start, resource_size(r));
kfree(asic);
return 0;
}
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/sysfs.h>
-#include <linux/device.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/interrupt.h>
/*--------------------------------------------------------------------------*/
-const static struct resource t7l66xb_mmc_resources[] = {
+static const struct resource t7l66xb_mmc_resources[] = {
{
.start = 0x800,
.end = 0x9ff,
},
};
-const static struct resource t7l66xb_nand_resources[] = {
+static const struct resource t7l66xb_nand_resources[] = {
{
.start = 0xc00,
.end = 0xc07,
},
};
-const static struct resource tc6393xb_ohci_resources[] = {
+static const struct resource tc6393xb_ohci_resources[] = {
{
.start = 0x3000,
.end = 0x31ff,
long irq = (long)data;
struct irq_desc *desc = irq_to_desc(irq);
static unsigned i2c_errors;
- const static unsigned max_i2c_errors = 100;
+ static const unsigned max_i2c_errors = 100;
if (!desc) {
pr_err("twl4030: Invalid IRQ: %ld\n", irq);
do {
schedule_timeout_interruptible(1);
reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
- } while (--tries && (reg & WM8350_AUXADC_POLL));
+ } while ((reg & WM8350_AUXADC_POLL) && --tries);
if (!tries)
dev_err(wm8350->dev, "adc chn %d read timeout\n", channel);
}
wm8350->reg_cache =
- kzalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
+ kmalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
if (wm8350->reg_cache == NULL)
return -ENOMEM;
* a PMIC so the device many not be in a virgin state and we
* can't rely on the silicon values.
*/
+ ret = wm8350->read_dev(wm8350, 0,
+ sizeof(u16) * (WM8350_MAX_REGISTER + 1),
+ wm8350->reg_cache);
+ if (ret < 0) {
+ dev_err(wm8350->dev,
+ "failed to read initial cache values\n");
+ goto out;
+ }
+
+ /* Mask out uncacheable/unreadable bits and the audio. */
for (i = 0; i < WM8350_MAX_REGISTER; i++) {
- /* audio register range */
if (wm8350_reg_io_map[i].readable &&
(i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) {
- ret = wm8350->read_dev(wm8350, i, 2, (char *)&value);
- if (ret < 0) {
- dev_err(wm8350->dev,
- "failed to read initial cache value\n");
- goto out;
- }
- value = be16_to_cpu(value);
+ value = be16_to_cpu(wm8350->reg_cache[i]);
value &= wm8350_reg_io_map[i].readable;
value &= ~wm8350_reg_io_map[i].vol;
wm8350->reg_cache[i] = value;
mutex_init(&wm8350->irq_mutex);
INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
if (irq) {
- ret = request_irq(irq, wm8350_irq, 0,
+ int flags = 0;
+
+ if (pdata && pdata->irq_high) {
+ flags |= IRQF_TRIGGER_HIGH;
+
+ wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
+ WM8350_IRQ_POL);
+ } else {
+ flags |= IRQF_TRIGGER_LOW;
+
+ wm8350_clear_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
+ WM8350_IRQ_POL);
+ }
+
+ ret = request_irq(irq, wm8350_irq, flags,
"wm8350", wm8350);
if (ret != 0) {
dev_err(wm8350->dev, "Failed to request IRQ: %d\n",
#include <linux/irq.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
-#include <linux/clk.h>
#include <linux/err.h>
#include <linux/delay.h>
-#include <linux/ds1wm.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/ds1wm.h>
#include <asm/io.h>
void __iomem *map;
int bus_shift; /* # of shifts to calc register offsets */
struct platform_device *pdev;
- struct ds1wm_platform_data *pdata;
+ struct mfd_cell *cell;
int irq;
int active_high;
- struct clk *clk;
int slave_present;
void *reset_complete;
void *read_complete;
static void ds1wm_up(struct ds1wm_data *ds1wm_data)
{
- int gclk, divisor;
+ int divisor;
+ struct ds1wm_driver_data *plat = ds1wm_data->cell->driver_data;
- if (ds1wm_data->pdata->enable)
- ds1wm_data->pdata->enable(ds1wm_data->pdev);
+ if (ds1wm_data->cell->enable)
+ ds1wm_data->cell->enable(ds1wm_data->pdev);
- gclk = clk_get_rate(ds1wm_data->clk);
- clk_enable(ds1wm_data->clk);
- divisor = ds1wm_find_divisor(gclk);
+ divisor = ds1wm_find_divisor(plat->clock_rate);
if (divisor == 0) {
dev_err(&ds1wm_data->pdev->dev,
- "no suitable divisor for %dHz clock\n", gclk);
+ "no suitable divisor for %dHz clock\n",
+ plat->clock_rate);
return;
}
ds1wm_write_register(ds1wm_data, DS1WM_CLKDIV, divisor);
ds1wm_write_register(ds1wm_data, DS1WM_INT_EN,
ds1wm_data->active_high ? DS1WM_INTEN_IAS : 0);
- if (ds1wm_data->pdata->disable)
- ds1wm_data->pdata->disable(ds1wm_data->pdev);
-
- clk_disable(ds1wm_data->clk);
+ if (ds1wm_data->cell->disable)
+ ds1wm_data->cell->disable(ds1wm_data->pdev);
}
/* --------------------------------------------------------------------- */
static int ds1wm_probe(struct platform_device *pdev)
{
struct ds1wm_data *ds1wm_data;
- struct ds1wm_platform_data *plat;
+ struct ds1wm_driver_data *plat;
struct resource *res;
+ struct mfd_cell *cell;
int ret;
if (!pdev)
return -ENODEV;
+ cell = pdev->dev.platform_data;
+ if (!cell)
+ return -ENODEV;
+
ds1wm_data = kzalloc(sizeof(*ds1wm_data), GFP_KERNEL);
if (!ds1wm_data)
return -ENOMEM;
ret = -ENXIO;
goto err0;
}
- ds1wm_data->map = ioremap(res->start, res->end - res->start + 1);
+ ds1wm_data->map = ioremap(res->start, resource_size(res));
if (!ds1wm_data->map) {
ret = -ENOMEM;
goto err0;
}
- plat = pdev->dev.platform_data;
- ds1wm_data->bus_shift = plat->bus_shift;
+ plat = cell->driver_data;
+
+ /* calculate bus shift from mem resource */
+ ds1wm_data->bus_shift = resource_size(res) >> 3;
+
ds1wm_data->pdev = pdev;
- ds1wm_data->pdata = plat;
+ ds1wm_data->cell = cell;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
if (ret)
goto err1;
- ds1wm_data->clk = clk_get(&pdev->dev, "ds1wm");
- if (IS_ERR(ds1wm_data->clk)) {
- ret = PTR_ERR(ds1wm_data->clk);
- goto err2;
- }
-
ds1wm_up(ds1wm_data);
ds1wm_master.data = (void *)ds1wm_data;
ret = w1_add_master_device(&ds1wm_master);
if (ret)
- goto err3;
+ goto err2;
return 0;
-err3:
- ds1wm_down(ds1wm_data);
- clk_put(ds1wm_data->clk);
err2:
+ ds1wm_down(ds1wm_data);
free_irq(ds1wm_data->irq, ds1wm_data);
err1:
iounmap(ds1wm_data->map);
w1_remove_master_device(&ds1wm_master);
ds1wm_down(ds1wm_data);
- clk_put(ds1wm_data->clk);
free_irq(ds1wm_data->irq, ds1wm_data);
iounmap(ds1wm_data->map);
kfree(ds1wm_data);
+++ /dev/null
-/* platform data for the DS1WM driver */
-
-struct ds1wm_platform_data {
- int bus_shift; /* number of shifts needed to calculate the
- * offset between DS1WM registers;
- * e.g. on h5xxx and h2200 this is 2
- * (registers aligned to 4-byte boundaries),
- * while on hx4700 this is 1 */
- int active_high;
- void (*enable)(struct platform_device *pdev);
- void (*disable)(struct platform_device *pdev);
-};
--- /dev/null
+/* MFD cell driver data for the DS1WM driver */
+
+struct ds1wm_driver_data {
+ int active_high;
+ int clock_rate;
+};
struct pasic3_platform_data {
struct pasic3_leds_machinfo *led_pdata;
- unsigned int bus_shift;
unsigned int clock_rate;
};
*
* @init: Function called during driver initialisation. Should be
* used by the platform to configure GPIO functions and similar.
+ * @irq_high: Set if WM8350 IRQ is active high.
*/
struct wm8350_platform_data {
int (*init)(struct wm8350 *wm8350);
+ int irq_high;
};
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff