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pinctrl: single: Use generic pinmux helpers for managing functions
We can now drop the driver specific code for managing functions. Signed-off-by: Tony Lindgren <tony@atomide.com> [Replaces GENERIC_PINMUX with GENERIC_PINMUX_FUNCTIONS] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Tony Lindgren
Linus Walleij
parent
caeb774ea3
commit
571aec4df5
@ -167,7 +167,7 @@ config PINCTRL_SINGLE
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tristate "One-register-per-pin type device tree based pinctrl driver"
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depends on OF
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select GENERIC_PINCTRL_GROUPS
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select PINMUX
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select GENERIC_PINMUX_FUNCTIONS
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select GENERIC_PINCONF
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help
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This selects the device tree based generic pinctrl driver.
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@ -33,6 +33,7 @@
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#include "core.h"
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#include "devicetree.h"
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#include "pinconf.h"
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#include "pinmux.h"
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#define DRIVER_NAME "pinctrl-single"
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#define PCS_OFF_DISABLED ~0U
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@ -160,13 +161,10 @@ struct pcs_soc_data {
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* @bits_per_mux: number of bits per mux
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* @bits_per_pin: number of bits per pin
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* @pins: physical pins on the SoC
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* @ftree: function index radix tree
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* @functions: list of functions
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* @gpiofuncs: list of gpio functions
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* @irqs: list of interrupt registers
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* @chip: chip container for this instance
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* @domain: IRQ domain for this instance
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* @nfuncs: number of functions
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* @desc: pin controller descriptor
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* @read: register read function to use
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* @write: register write function to use
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@ -194,13 +192,10 @@ struct pcs_device {
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bool bits_per_mux;
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unsigned bits_per_pin;
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struct pcs_data pins;
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struct radix_tree_root ftree;
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struct list_head functions;
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struct list_head gpiofuncs;
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struct list_head irqs;
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struct irq_chip chip;
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struct irq_domain *domain;
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unsigned nfuncs;
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struct pinctrl_desc desc;
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unsigned (*read)(void __iomem *reg);
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void (*write)(unsigned val, void __iomem *reg);
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@ -307,59 +302,13 @@ static const struct pinctrl_ops pcs_pinctrl_ops = {
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.dt_free_map = pcs_dt_free_map,
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};
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static int pcs_get_functions_count(struct pinctrl_dev *pctldev)
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{
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struct pcs_device *pcs;
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pcs = pinctrl_dev_get_drvdata(pctldev);
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return pcs->nfuncs;
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}
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static const char *pcs_get_function_name(struct pinctrl_dev *pctldev,
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unsigned fselector)
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{
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struct pcs_device *pcs;
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struct pcs_function *func;
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pcs = pinctrl_dev_get_drvdata(pctldev);
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func = radix_tree_lookup(&pcs->ftree, fselector);
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if (!func) {
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dev_err(pcs->dev, "%s could not find function%i\n",
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__func__, fselector);
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return NULL;
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}
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return func->name;
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}
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static int pcs_get_function_groups(struct pinctrl_dev *pctldev,
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unsigned fselector,
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const char * const **groups,
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unsigned * const ngroups)
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{
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struct pcs_device *pcs;
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struct pcs_function *func;
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pcs = pinctrl_dev_get_drvdata(pctldev);
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func = radix_tree_lookup(&pcs->ftree, fselector);
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if (!func) {
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dev_err(pcs->dev, "%s could not find function%i\n",
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__func__, fselector);
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return -EINVAL;
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}
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*groups = func->pgnames;
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*ngroups = func->npgnames;
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return 0;
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}
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static int pcs_get_function(struct pinctrl_dev *pctldev, unsigned pin,
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struct pcs_function **func)
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{
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struct pcs_device *pcs = pinctrl_dev_get_drvdata(pctldev);
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struct pin_desc *pdesc = pin_desc_get(pctldev, pin);
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const struct pinctrl_setting_mux *setting;
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struct function_desc *function;
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unsigned fselector;
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/* If pin is not described in DTS & enabled, mux_setting is NULL. */
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@ -367,7 +316,8 @@ static int pcs_get_function(struct pinctrl_dev *pctldev, unsigned pin,
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if (!setting)
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return -ENOTSUPP;
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fselector = setting->func;
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*func = radix_tree_lookup(&pcs->ftree, fselector);
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function = pinmux_generic_get_function(pctldev, fselector);
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*func = function->data;
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if (!(*func)) {
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dev_err(pcs->dev, "%s could not find function%i\n",
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__func__, fselector);
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@ -380,6 +330,7 @@ static int pcs_set_mux(struct pinctrl_dev *pctldev, unsigned fselector,
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unsigned group)
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{
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struct pcs_device *pcs;
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struct function_desc *function;
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struct pcs_function *func;
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int i;
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@ -387,7 +338,8 @@ static int pcs_set_mux(struct pinctrl_dev *pctldev, unsigned fselector,
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/* If function mask is null, needn't enable it. */
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if (!pcs->fmask)
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return 0;
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func = radix_tree_lookup(&pcs->ftree, fselector);
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function = pinmux_generic_get_function(pctldev, fselector);
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func = function->data;
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if (!func)
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return -EINVAL;
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@ -445,9 +397,9 @@ static int pcs_request_gpio(struct pinctrl_dev *pctldev,
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}
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static const struct pinmux_ops pcs_pinmux_ops = {
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.get_functions_count = pcs_get_functions_count,
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.get_function_name = pcs_get_function_name,
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.get_function_groups = pcs_get_function_groups,
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.get_functions_count = pinmux_generic_get_function_count,
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.get_function_name = pinmux_generic_get_function_name,
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.get_function_groups = pinmux_generic_get_function_groups,
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.set_mux = pcs_set_mux,
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.gpio_request_enable = pcs_request_gpio,
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};
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@ -789,43 +741,24 @@ static struct pcs_function *pcs_add_function(struct pcs_device *pcs,
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unsigned npgnames)
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{
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struct pcs_function *function;
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int res;
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function = devm_kzalloc(pcs->dev, sizeof(*function), GFP_KERNEL);
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if (!function)
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return NULL;
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function->name = name;
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function->vals = vals;
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function->nvals = nvals;
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function->pgnames = pgnames;
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function->npgnames = npgnames;
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mutex_lock(&pcs->mutex);
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list_add_tail(&function->node, &pcs->functions);
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radix_tree_insert(&pcs->ftree, pcs->nfuncs, function);
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pcs->nfuncs++;
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mutex_unlock(&pcs->mutex);
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res = pinmux_generic_add_function(pcs->pctl, name,
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pgnames, npgnames,
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function);
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if (res)
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return NULL;
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return function;
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}
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static void pcs_remove_function(struct pcs_device *pcs,
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struct pcs_function *function)
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{
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int i;
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mutex_lock(&pcs->mutex);
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for (i = 0; i < pcs->nfuncs; i++) {
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struct pcs_function *found;
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found = radix_tree_lookup(&pcs->ftree, i);
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if (found == function)
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radix_tree_delete(&pcs->ftree, i);
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}
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list_del(&function->node);
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mutex_unlock(&pcs->mutex);
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}
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/**
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* pcs_get_pin_by_offset() - get a pin index based on the register offset
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* @pcs: pcs driver instance
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@ -1103,7 +1036,7 @@ free_pingroups:
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pinctrl_generic_remove_last_group(pcs->pctl);
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*num_maps = 1;
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free_function:
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pcs_remove_function(pcs, function);
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pinmux_generic_remove_last_function(pcs->pctl);
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free_pins:
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devm_kfree(pcs->dev, pins);
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@ -1235,8 +1168,7 @@ free_pingroups:
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pinctrl_generic_remove_last_group(pcs->pctl);
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*num_maps = 1;
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free_function:
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pcs_remove_function(pcs, function);
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pinmux_generic_remove_last_function(pcs->pctl);
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free_pins:
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devm_kfree(pcs->dev, pins);
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@ -1303,33 +1235,6 @@ free_map:
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return ret;
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}
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/**
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* pcs_free_funcs() - free memory used by functions
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* @pcs: pcs driver instance
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*/
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static void pcs_free_funcs(struct pcs_device *pcs)
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{
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struct list_head *pos, *tmp;
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int i;
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mutex_lock(&pcs->mutex);
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for (i = 0; i < pcs->nfuncs; i++) {
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struct pcs_function *func;
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func = radix_tree_lookup(&pcs->ftree, i);
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if (!func)
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continue;
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radix_tree_delete(&pcs->ftree, i);
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}
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list_for_each_safe(pos, tmp, &pcs->functions) {
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struct pcs_function *function;
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function = list_entry(pos, struct pcs_function, node);
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list_del(&function->node);
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}
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mutex_unlock(&pcs->mutex);
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}
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/**
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* pcs_irq_free() - free interrupt
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* @pcs: pcs driver instance
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@ -1358,7 +1263,6 @@ static void pcs_free_resources(struct pcs_device *pcs)
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{
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pcs_irq_free(pcs);
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pinctrl_unregister(pcs->pctl);
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pcs_free_funcs(pcs);
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#if IS_BUILTIN(CONFIG_PINCTRL_SINGLE)
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if (pcs->missing_nr_pinctrl_cells)
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@ -1753,7 +1657,6 @@ static int pcs_probe(struct platform_device *pdev)
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pcs->np = np;
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raw_spin_lock_init(&pcs->lock);
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mutex_init(&pcs->mutex);
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INIT_LIST_HEAD(&pcs->functions);
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INIT_LIST_HEAD(&pcs->gpiofuncs);
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soc = match->data;
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pcs->flags = soc->flags;
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@ -1814,7 +1717,6 @@ static int pcs_probe(struct platform_device *pdev)
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return -ENODEV;
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}
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INIT_RADIX_TREE(&pcs->ftree, GFP_KERNEL);
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platform_set_drvdata(pdev, pcs);
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switch (pcs->width) {
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