mfd: twl4030: simplified child creation code
Minor cleanup to twl4030-core: define a helper function to populate a single child node, and use it to replace six inconsistent versions of the same logic. Both object and source code shrink. As part of this, some devices now have more IRQ resources: battery charger, keypad, ADC, and USB transceiver. That helps to remove some irq #defines that block the children's drivers code from compiling on non-OMAP platforms. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
David Brownell
Samuel Ortiz
parent
4008e879e1
commit
5725d66b9d
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@ -352,6 +352,56 @@ EXPORT_SYMBOL(twl4030_i2c_read_u8);
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/*----------------------------------------------------------------------*/
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static struct device *add_child(unsigned chip, const char *name,
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void *pdata, unsigned pdata_len,
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bool can_wakeup, int irq0, int irq1)
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{
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struct platform_device *pdev;
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struct twl4030_client *twl = &twl4030_modules[chip];
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int status;
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pdev = platform_device_alloc(name, -1);
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if (!pdev) {
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dev_dbg(&twl->client->dev, "can't alloc dev\n");
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status = -ENOMEM;
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goto err;
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}
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device_init_wakeup(&pdev->dev, can_wakeup);
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pdev->dev.parent = &twl->client->dev;
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if (pdata) {
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status = platform_device_add_data(pdev, pdata, pdata_len);
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if (status < 0) {
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dev_dbg(&pdev->dev, "can't add platform_data\n");
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goto err;
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}
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}
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if (irq0) {
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struct resource r[2] = {
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{ .start = irq0, .flags = IORESOURCE_IRQ, },
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{ .start = irq1, .flags = IORESOURCE_IRQ, },
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};
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status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
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if (status < 0) {
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dev_dbg(&pdev->dev, "can't add irqs\n");
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goto err;
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}
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}
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status = platform_device_add(pdev);
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err:
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if (status < 0) {
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platform_device_put(pdev);
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dev_err(&twl->client->dev, "can't add %s dev\n", name);
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return ERR_PTR(status);
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}
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return &pdev->dev;
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}
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/*
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* NOTE: We know the first 8 IRQs after pdata->base_irq are
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* for the PIH, and the next are for the PWR_INT SIH, since
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@ -360,250 +410,68 @@ EXPORT_SYMBOL(twl4030_i2c_read_u8);
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static int add_children(struct twl4030_platform_data *pdata)
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{
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struct platform_device *pdev = NULL;
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struct twl4030_client *twl = NULL;
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int status = 0;
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struct device *child;
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if (twl_has_bci() && pdata->bci) {
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twl = &twl4030_modules[3];
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pdev = platform_device_alloc("twl4030_bci", -1);
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if (!pdev) {
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pr_debug("%s: can't alloc bci dev\n", DRIVER_NAME);
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status = -ENOMEM;
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goto err;
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}
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if (status == 0) {
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pdev->dev.parent = &twl->client->dev;
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status = platform_device_add_data(pdev, pdata->bci,
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sizeof(*pdata->bci));
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if (status < 0) {
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dev_dbg(&twl->client->dev,
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"can't add bci data, %d\n",
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status);
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goto err;
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}
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}
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if (status == 0) {
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struct resource r = {
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.start = pdata->irq_base + 8 + 1,
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.flags = IORESOURCE_IRQ,
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};
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status = platform_device_add_resources(pdev, &r, 1);
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}
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if (status == 0)
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create bci dev, %d\n",
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status);
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goto err;
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}
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child = add_child(3, "twl4030_bci",
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pdata->bci, sizeof(*pdata->bci),
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false,
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/* irq0 = CHG_PRES, irq1 = BCI */
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pdata->irq_base + 8 + 1, pdata->irq_base + 2);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_gpio() && pdata->gpio) {
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twl = &twl4030_modules[1];
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pdev = platform_device_alloc("twl4030_gpio", -1);
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if (!pdev) {
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pr_debug("%s: can't alloc gpio dev\n", DRIVER_NAME);
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status = -ENOMEM;
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goto err;
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}
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/* more driver model init */
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if (status == 0) {
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pdev->dev.parent = &twl->client->dev;
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/* device_init_wakeup(&pdev->dev, 1); */
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status = platform_device_add_data(pdev, pdata->gpio,
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sizeof(*pdata->gpio));
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if (status < 0) {
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dev_dbg(&twl->client->dev,
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"can't add gpio data, %d\n",
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status);
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goto err;
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}
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}
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/* GPIO module IRQ */
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if (status == 0) {
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struct resource r = {
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.start = pdata->irq_base + 0,
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.flags = IORESOURCE_IRQ,
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};
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status = platform_device_add_resources(pdev, &r, 1);
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}
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if (status == 0)
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create gpio dev, %d\n",
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status);
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goto err;
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}
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child = add_child(1, "twl4030_gpio",
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pdata->gpio, sizeof(*pdata->gpio),
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false, pdata->irq_base + 0, 0);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_keypad() && pdata->keypad) {
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pdev = platform_device_alloc("twl4030_keypad", -1);
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if (pdev) {
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twl = &twl4030_modules[2];
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pdev->dev.parent = &twl->client->dev;
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device_init_wakeup(&pdev->dev, 1);
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status = platform_device_add_data(pdev, pdata->keypad,
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sizeof(*pdata->keypad));
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if (status < 0) {
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dev_dbg(&twl->client->dev,
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"can't add keypad data, %d\n",
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status);
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platform_device_put(pdev);
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goto err;
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}
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create keypad dev, %d\n",
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status);
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goto err;
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}
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} else {
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pr_debug("%s: can't alloc keypad dev\n", DRIVER_NAME);
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status = -ENOMEM;
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goto err;
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}
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child = add_child(2, "twl4030_keypad",
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pdata->keypad, sizeof(*pdata->keypad),
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true, pdata->irq_base + 1, 0);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_madc() && pdata->madc) {
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pdev = platform_device_alloc("twl4030_madc", -1);
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if (pdev) {
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twl = &twl4030_modules[2];
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pdev->dev.parent = &twl->client->dev;
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device_init_wakeup(&pdev->dev, 1);
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status = platform_device_add_data(pdev, pdata->madc,
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sizeof(*pdata->madc));
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't add madc data, %d\n",
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status);
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goto err;
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}
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create madc dev, %d\n",
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status);
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goto err;
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}
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} else {
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pr_debug("%s: can't alloc madc dev\n", DRIVER_NAME);
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status = -ENOMEM;
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goto err;
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}
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child = add_child(2, "twl4030_madc",
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pdata->madc, sizeof(*pdata->madc),
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true, pdata->irq_base + 3, 0);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_rtc()) {
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twl = &twl4030_modules[3];
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pdev = platform_device_alloc("twl4030_rtc", -1);
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if (!pdev) {
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pr_debug("%s: can't alloc rtc dev\n", DRIVER_NAME);
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status = -ENOMEM;
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} else {
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pdev->dev.parent = &twl->client->dev;
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device_init_wakeup(&pdev->dev, 1);
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}
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/*
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* REVISIT platform_data here currently might use of
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* REVISIT platform_data here currently might expose the
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* "msecure" line ... but for now we just expect board
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* setup to tell the chip "we are secure" at all times.
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* setup to tell the chip "it's always ok to SET_TIME".
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* Eventually, Linux might become more aware of such
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* HW security concerns, and "least privilege".
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*/
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/* RTC module IRQ */
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if (status == 0) {
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struct resource r = {
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.start = pdata->irq_base + 8 + 3,
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.flags = IORESOURCE_IRQ,
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};
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status = platform_device_add_resources(pdev, &r, 1);
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}
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if (status == 0)
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create rtc dev, %d\n",
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status);
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goto err;
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}
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child = add_child(3, "twl4030_rtc",
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NULL, 0,
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true, pdata->irq_base + 8 + 3, 0);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_usb() && pdata->usb) {
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twl = &twl4030_modules[0];
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pdev = platform_device_alloc("twl4030_usb", -1);
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if (!pdev) {
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pr_debug("%s: can't alloc usb dev\n", DRIVER_NAME);
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status = -ENOMEM;
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goto err;
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}
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if (status == 0) {
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pdev->dev.parent = &twl->client->dev;
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device_init_wakeup(&pdev->dev, 1);
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status = platform_device_add_data(pdev, pdata->usb,
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sizeof(*pdata->usb));
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't add usb data, %d\n",
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status);
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goto err;
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}
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}
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if (status == 0) {
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struct resource r = {
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.start = pdata->irq_base + 8 + 2,
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.flags = IORESOURCE_IRQ,
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};
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status = platform_device_add_resources(pdev, &r, 1);
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}
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if (status == 0)
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status = platform_device_add(pdev);
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if (status < 0) {
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platform_device_put(pdev);
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dev_dbg(&twl->client->dev,
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"can't create usb dev, %d\n",
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status);
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}
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child = add_child(0, "twl4030_usb",
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pdata->usb, sizeof(*pdata->usb),
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true,
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/* irq0 = USB_PRES, irq1 = USB */
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pdata->irq_base + 8 + 2, pdata->irq_base + 4);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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err:
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if (status)
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pr_err("failed to add twl4030's children (status %d)\n", status);
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return status;
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return 0;
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}
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/*----------------------------------------------------------------------*/
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