mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Input: pmic8xxx-keypad - migrate to DT
The driver is only supported on DT enabled platforms. Convert the driver to DT so that it can probe properly. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
parent
a5dde0c72c
commit
86ea5e6b79
3 changed files with 175 additions and 116 deletions
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@ -0,0 +1,89 @@
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Qualcomm PM8xxx PMIC Keypad
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PROPERTIES
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- compatible:
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Usage: required
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Value type: <string>
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Definition: must be one of:
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"qcom,pm8058-keypad"
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"qcom,pm8921-keypad"
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- reg:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: address of keypad control register
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- interrupts:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: the first interrupt specifies the key sense interrupt
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and the second interrupt specifies the key stuck interrupt.
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The format of the specifier is defined by the binding
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document describing the node's interrupt parent.
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- linux,keymap:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: the linux keymap. More information can be found in
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input/matrix-keymap.txt.
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- linux,keypad-no-autorepeat:
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Usage: optional
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Value type: <bool>
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Definition: don't enable autorepeat feature.
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- linux,keypad-wakeup:
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Usage: optional
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Value type: <bool>
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Definition: use any event on keypad as wakeup event.
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- keypad,num-rows:
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Usage: required
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Value type: <u32>
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Definition: number of rows in the keymap. More information can be found
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in input/matrix-keymap.txt.
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- keypad,num-columns:
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Usage: required
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Value type: <u32>
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Definition: number of columns in the keymap. More information can be
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found in input/matrix-keymap.txt.
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- debounce:
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Usage: optional
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Value type: <u32>
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Definition: time in microseconds that key must be pressed or release
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for key sense interrupt to trigger.
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- scan-delay:
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Usage: optional
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Value type: <u32>
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Definition: time in microseconds to pause between successive scans
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of the matrix array.
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- row-hold:
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Usage: optional
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Value type: <u32>
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Definition: time in nanoseconds to pause between scans of each row in
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the matrix array.
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EXAMPLE
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keypad@148 {
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compatible = "qcom,pm8921-keypad";
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reg = <0x148>;
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interrupt-parent = <&pmicintc>;
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interrupts = <74 1>, <75 1>;
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linux,keymap = <
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MATRIX_KEY(0, 0, KEY_VOLUMEUP)
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MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
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MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
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MATRIX_KEY(0, 3, KEY_CAMERA)
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>;
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keypad,num-rows = <1>;
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keypad,num-columns = <5>;
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debounce = <15>;
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scan-delay = <32>;
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row-hold = <91500>;
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};
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@ -20,8 +20,8 @@
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#include <linux/delay.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/mutex.h>
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#include <linux/regmap.h>
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#include <linux/regmap.h>
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#include <linux/of.h>
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#include <linux/input/pmic8xxx-keypad.h>
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#include <linux/input/matrix_keypad.h>
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#define PM8XXX_MAX_ROWS 18
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#define PM8XXX_MAX_ROWS 18
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#define PM8XXX_MAX_COLS 8
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#define PM8XXX_MAX_COLS 8
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@ -84,7 +84,8 @@
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/**
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/**
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* struct pmic8xxx_kp - internal keypad data structure
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* struct pmic8xxx_kp - internal keypad data structure
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* @pdata - keypad platform data pointer
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* @num_cols - number of columns of keypad
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* @num_rows - number of row of keypad
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* @input - input device pointer for keypad
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* @input - input device pointer for keypad
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* @regmap - regmap handle
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* @regmap - regmap handle
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* @key_sense_irq - key press/release irq number
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* @key_sense_irq - key press/release irq number
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@ -96,7 +97,8 @@
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* @ctrl_reg - control register value
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* @ctrl_reg - control register value
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*/
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*/
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struct pmic8xxx_kp {
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struct pmic8xxx_kp {
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const struct pm8xxx_keypad_platform_data *pdata;
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unsigned int num_rows;
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unsigned int num_cols;
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struct input_dev *input;
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struct input_dev *input;
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struct regmap *regmap;
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struct regmap *regmap;
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int key_sense_irq;
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int key_sense_irq;
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@ -115,9 +117,9 @@ static u8 pmic8xxx_col_state(struct pmic8xxx_kp *kp, u8 col)
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{
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{
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/* all keys pressed on that particular row? */
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/* all keys pressed on that particular row? */
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if (col == 0x00)
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if (col == 0x00)
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return 1 << kp->pdata->num_cols;
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return 1 << kp->num_cols;
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else
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else
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return col & ((1 << kp->pdata->num_cols) - 1);
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return col & ((1 << kp->num_cols) - 1);
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}
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}
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/*
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/*
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@ -180,10 +182,10 @@ static int pmic8xxx_kp_read_matrix(struct pmic8xxx_kp *kp, u16 *new_state,
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int rc, read_rows;
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int rc, read_rows;
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unsigned int scan_val;
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unsigned int scan_val;
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if (kp->pdata->num_rows < PM8XXX_MIN_ROWS)
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if (kp->num_rows < PM8XXX_MIN_ROWS)
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read_rows = PM8XXX_MIN_ROWS;
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read_rows = PM8XXX_MIN_ROWS;
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else
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else
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read_rows = kp->pdata->num_rows;
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read_rows = kp->num_rows;
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pmic8xxx_chk_sync_read(kp);
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pmic8xxx_chk_sync_read(kp);
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@ -227,13 +229,13 @@ static void __pmic8xxx_kp_scan_matrix(struct pmic8xxx_kp *kp, u16 *new_state,
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{
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{
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int row, col, code;
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int row, col, code;
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for (row = 0; row < kp->pdata->num_rows; row++) {
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for (row = 0; row < kp->num_rows; row++) {
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int bits_changed = new_state[row] ^ old_state[row];
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int bits_changed = new_state[row] ^ old_state[row];
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if (!bits_changed)
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if (!bits_changed)
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continue;
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continue;
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for (col = 0; col < kp->pdata->num_cols; col++) {
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for (col = 0; col < kp->num_cols; col++) {
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if (!(bits_changed & (1 << col)))
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if (!(bits_changed & (1 << col)))
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continue;
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continue;
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@ -259,9 +261,9 @@ static bool pmic8xxx_detect_ghost_keys(struct pmic8xxx_kp *kp, u16 *new_state)
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u16 check, row_state;
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u16 check, row_state;
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check = 0;
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check = 0;
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for (row = 0; row < kp->pdata->num_rows; row++) {
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for (row = 0; row < kp->num_rows; row++) {
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row_state = (~new_state[row]) &
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row_state = (~new_state[row]) &
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((1 << kp->pdata->num_cols) - 1);
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((1 << kp->num_cols) - 1);
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if (hweight16(row_state) > 1) {
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if (hweight16(row_state) > 1) {
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if (found_first == -1)
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if (found_first == -1)
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@ -369,8 +371,13 @@ static irqreturn_t pmic8xxx_kp_irq(int irq, void *data)
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return IRQ_HANDLED;
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return IRQ_HANDLED;
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}
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}
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static int pmic8xxx_kpd_init(struct pmic8xxx_kp *kp)
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static int pmic8xxx_kpd_init(struct pmic8xxx_kp *kp,
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struct platform_device *pdev)
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{
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{
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const struct device_node *of_node = pdev->dev.of_node;
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unsigned int scan_delay_ms;
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unsigned int row_hold_ns;
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unsigned int debounce_ms;
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int bits, rc, cycles;
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int bits, rc, cycles;
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u8 scan_val = 0, ctrl_val = 0;
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u8 scan_val = 0, ctrl_val = 0;
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static const u8 row_bits[] = {
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static const u8 row_bits[] = {
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@ -378,18 +385,18 @@ static int pmic8xxx_kpd_init(struct pmic8xxx_kp *kp)
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};
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};
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/* Find column bits */
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/* Find column bits */
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if (kp->pdata->num_cols < KEYP_CTRL_SCAN_COLS_MIN)
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if (kp->num_cols < KEYP_CTRL_SCAN_COLS_MIN)
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bits = 0;
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bits = 0;
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else
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else
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bits = kp->pdata->num_cols - KEYP_CTRL_SCAN_COLS_MIN;
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bits = kp->num_cols - KEYP_CTRL_SCAN_COLS_MIN;
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ctrl_val = (bits & KEYP_CTRL_SCAN_COLS_BITS) <<
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ctrl_val = (bits & KEYP_CTRL_SCAN_COLS_BITS) <<
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KEYP_CTRL_SCAN_COLS_SHIFT;
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KEYP_CTRL_SCAN_COLS_SHIFT;
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/* Find row bits */
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/* Find row bits */
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if (kp->pdata->num_rows < KEYP_CTRL_SCAN_ROWS_MIN)
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if (kp->num_rows < KEYP_CTRL_SCAN_ROWS_MIN)
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bits = 0;
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bits = 0;
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else
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else
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bits = row_bits[kp->pdata->num_rows - KEYP_CTRL_SCAN_ROWS_MIN];
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bits = row_bits[kp->num_rows - KEYP_CTRL_SCAN_ROWS_MIN];
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ctrl_val |= (bits << KEYP_CTRL_SCAN_ROWS_SHIFT);
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ctrl_val |= (bits << KEYP_CTRL_SCAN_ROWS_SHIFT);
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@ -399,15 +406,44 @@ static int pmic8xxx_kpd_init(struct pmic8xxx_kp *kp)
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return rc;
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return rc;
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}
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}
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bits = (kp->pdata->debounce_ms / 5) - 1;
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if (of_property_read_u32(of_node, "scan-delay", &scan_delay_ms))
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scan_delay_ms = MIN_SCAN_DELAY;
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if (scan_delay_ms > MAX_SCAN_DELAY || scan_delay_ms < MIN_SCAN_DELAY ||
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!is_power_of_2(scan_delay_ms)) {
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dev_err(&pdev->dev, "invalid keypad scan time supplied\n");
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return -EINVAL;
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}
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if (of_property_read_u32(of_node, "row-hold", &row_hold_ns))
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row_hold_ns = MIN_ROW_HOLD_DELAY;
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if (row_hold_ns > MAX_ROW_HOLD_DELAY ||
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row_hold_ns < MIN_ROW_HOLD_DELAY ||
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((row_hold_ns % MIN_ROW_HOLD_DELAY) != 0)) {
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dev_err(&pdev->dev, "invalid keypad row hold time supplied\n");
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return -EINVAL;
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}
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if (of_property_read_u32(of_node, "debounce", &debounce_ms))
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debounce_ms = MIN_DEBOUNCE_TIME;
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if (((debounce_ms % 5) != 0) ||
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debounce_ms > MAX_DEBOUNCE_TIME ||
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debounce_ms < MIN_DEBOUNCE_TIME) {
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dev_err(&pdev->dev, "invalid debounce time supplied\n");
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return -EINVAL;
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}
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bits = (debounce_ms / 5) - 1;
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scan_val |= (bits << KEYP_SCAN_DBOUNCE_SHIFT);
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scan_val |= (bits << KEYP_SCAN_DBOUNCE_SHIFT);
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bits = fls(kp->pdata->scan_delay_ms) - 1;
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bits = fls(scan_delay_ms) - 1;
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scan_val |= (bits << KEYP_SCAN_PAUSE_SHIFT);
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scan_val |= (bits << KEYP_SCAN_PAUSE_SHIFT);
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/* Row hold time is a multiple of 32KHz cycles. */
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/* Row hold time is a multiple of 32KHz cycles. */
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cycles = (kp->pdata->row_hold_ns * KEYP_CLOCK_FREQ) / NSEC_PER_SEC;
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cycles = (row_hold_ns * KEYP_CLOCK_FREQ) / NSEC_PER_SEC;
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scan_val |= (cycles << KEYP_SCAN_ROW_HOLD_SHIFT);
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scan_val |= (cycles << KEYP_SCAN_ROW_HOLD_SHIFT);
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@ -471,50 +507,27 @@ static void pmic8xxx_kp_close(struct input_dev *dev)
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*/
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*/
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static int pmic8xxx_kp_probe(struct platform_device *pdev)
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static int pmic8xxx_kp_probe(struct platform_device *pdev)
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{
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{
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const struct pm8xxx_keypad_platform_data *pdata =
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unsigned int rows, cols;
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dev_get_platdata(&pdev->dev);
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bool repeat;
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const struct matrix_keymap_data *keymap_data;
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bool wakeup;
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struct pmic8xxx_kp *kp;
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struct pmic8xxx_kp *kp;
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int rc;
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int rc;
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unsigned int ctrl_val;
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unsigned int ctrl_val;
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if (!pdata || !pdata->num_cols || !pdata->num_rows ||
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rc = matrix_keypad_parse_of_params(&pdev->dev, &rows, &cols);
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pdata->num_cols > PM8XXX_MAX_COLS ||
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if (rc)
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pdata->num_rows > PM8XXX_MAX_ROWS ||
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return rc;
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pdata->num_cols < PM8XXX_MIN_COLS) {
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if (cols > PM8XXX_MAX_COLS || rows > PM8XXX_MAX_ROWS ||
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cols < PM8XXX_MIN_COLS) {
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dev_err(&pdev->dev, "invalid platform data\n");
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dev_err(&pdev->dev, "invalid platform data\n");
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return -EINVAL;
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return -EINVAL;
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}
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}
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if (!pdata->scan_delay_ms ||
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repeat = !of_property_read_bool(pdev->dev.of_node,
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pdata->scan_delay_ms > MAX_SCAN_DELAY ||
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"linux,input-no-autorepeat");
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pdata->scan_delay_ms < MIN_SCAN_DELAY ||
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wakeup = of_property_read_bool(pdev->dev.of_node,
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!is_power_of_2(pdata->scan_delay_ms)) {
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"linux,keypad-wakeup");
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dev_err(&pdev->dev, "invalid keypad scan time supplied\n");
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return -EINVAL;
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}
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if (!pdata->row_hold_ns ||
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pdata->row_hold_ns > MAX_ROW_HOLD_DELAY ||
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pdata->row_hold_ns < MIN_ROW_HOLD_DELAY ||
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((pdata->row_hold_ns % MIN_ROW_HOLD_DELAY) != 0)) {
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dev_err(&pdev->dev, "invalid keypad row hold time supplied\n");
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return -EINVAL;
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}
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if (!pdata->debounce_ms ||
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((pdata->debounce_ms % 5) != 0) ||
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pdata->debounce_ms > MAX_DEBOUNCE_TIME ||
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pdata->debounce_ms < MIN_DEBOUNCE_TIME) {
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dev_err(&pdev->dev, "invalid debounce time supplied\n");
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return -EINVAL;
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}
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keymap_data = pdata->keymap_data;
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if (!keymap_data) {
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dev_err(&pdev->dev, "no keymap data supplied\n");
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return -EINVAL;
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}
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kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL);
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kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL);
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if (!kp)
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if (!kp)
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@ -526,7 +539,8 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, kp);
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platform_set_drvdata(pdev, kp);
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kp->pdata = pdata;
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kp->num_rows = rows;
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kp->num_cols = cols;
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kp->dev = &pdev->dev;
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kp->dev = &pdev->dev;
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kp->input = devm_input_allocate_device(&pdev->dev);
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kp->input = devm_input_allocate_device(&pdev->dev);
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@ -547,8 +561,8 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
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return kp->key_stuck_irq;
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return kp->key_stuck_irq;
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}
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}
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||||||
kp->input->name = pdata->input_name ? : "PMIC8XXX keypad";
|
kp->input->name = "PMIC8XXX keypad";
|
||||||
kp->input->phys = pdata->input_phys_device ? : "pmic8xxx_keypad/input0";
|
kp->input->phys = "pmic8xxx_keypad/input0";
|
||||||
|
|
||||||
kp->input->id.bustype = BUS_I2C;
|
kp->input->id.bustype = BUS_I2C;
|
||||||
kp->input->id.version = 0x0001;
|
kp->input->id.version = 0x0001;
|
||||||
|
@ -558,7 +572,7 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
|
||||||
kp->input->open = pmic8xxx_kp_open;
|
kp->input->open = pmic8xxx_kp_open;
|
||||||
kp->input->close = pmic8xxx_kp_close;
|
kp->input->close = pmic8xxx_kp_close;
|
||||||
|
|
||||||
rc = matrix_keypad_build_keymap(keymap_data, NULL,
|
rc = matrix_keypad_build_keymap(NULL, NULL,
|
||||||
PM8XXX_MAX_ROWS, PM8XXX_MAX_COLS,
|
PM8XXX_MAX_ROWS, PM8XXX_MAX_COLS,
|
||||||
kp->keycodes, kp->input);
|
kp->keycodes, kp->input);
|
||||||
if (rc) {
|
if (rc) {
|
||||||
|
@ -566,7 +580,7 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
|
||||||
return rc;
|
return rc;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (pdata->rep)
|
if (repeat)
|
||||||
__set_bit(EV_REP, kp->input->evbit);
|
__set_bit(EV_REP, kp->input->evbit);
|
||||||
input_set_capability(kp->input, EV_MSC, MSC_SCAN);
|
input_set_capability(kp->input, EV_MSC, MSC_SCAN);
|
||||||
|
|
||||||
|
@ -576,7 +590,7 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
|
||||||
memset(kp->keystate, 0xff, sizeof(kp->keystate));
|
memset(kp->keystate, 0xff, sizeof(kp->keystate));
|
||||||
memset(kp->stuckstate, 0xff, sizeof(kp->stuckstate));
|
memset(kp->stuckstate, 0xff, sizeof(kp->stuckstate));
|
||||||
|
|
||||||
rc = pmic8xxx_kpd_init(kp);
|
rc = pmic8xxx_kpd_init(kp, pdev);
|
||||||
if (rc < 0) {
|
if (rc < 0) {
|
||||||
dev_err(&pdev->dev, "unable to initialize keypad controller\n");
|
dev_err(&pdev->dev, "unable to initialize keypad controller\n");
|
||||||
return rc;
|
return rc;
|
||||||
|
@ -612,7 +626,7 @@ static int pmic8xxx_kp_probe(struct platform_device *pdev)
|
||||||
return rc;
|
return rc;
|
||||||
}
|
}
|
||||||
|
|
||||||
device_init_wakeup(&pdev->dev, pdata->wakeup);
|
device_init_wakeup(&pdev->dev, wakeup);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
@ -662,12 +676,20 @@ static int pmic8xxx_kp_resume(struct device *dev)
|
||||||
static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
|
static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
|
||||||
pmic8xxx_kp_suspend, pmic8xxx_kp_resume);
|
pmic8xxx_kp_suspend, pmic8xxx_kp_resume);
|
||||||
|
|
||||||
|
static const struct of_device_id pm8xxx_match_table[] = {
|
||||||
|
{ .compatible = "qcom,pm8058-keypad" },
|
||||||
|
{ .compatible = "qcom,pm8921-keypad" },
|
||||||
|
{ }
|
||||||
|
};
|
||||||
|
MODULE_DEVICE_TABLE(of, pm8xxx_match_table);
|
||||||
|
|
||||||
static struct platform_driver pmic8xxx_kp_driver = {
|
static struct platform_driver pmic8xxx_kp_driver = {
|
||||||
.probe = pmic8xxx_kp_probe,
|
.probe = pmic8xxx_kp_probe,
|
||||||
.driver = {
|
.driver = {
|
||||||
.name = PM8XXX_KEYPAD_DEV_NAME,
|
.name = "pm8xxx-keypad",
|
||||||
.owner = THIS_MODULE,
|
.owner = THIS_MODULE,
|
||||||
.pm = &pm8xxx_kp_pm_ops,
|
.pm = &pm8xxx_kp_pm_ops,
|
||||||
|
.of_match_table = pm8xxx_match_table,
|
||||||
},
|
},
|
||||||
};
|
};
|
||||||
module_platform_driver(pmic8xxx_kp_driver);
|
module_platform_driver(pmic8xxx_kp_driver);
|
||||||
|
|
|
@ -1,52 +0,0 @@
|
||||||
/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
|
|
||||||
*
|
|
||||||
* This program is free software; you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License version 2 and
|
|
||||||
* only version 2 as published by the Free Software Foundation.
|
|
||||||
*
|
|
||||||
* This program is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
* GNU General Public License for more details.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef __PMIC8XXX_KEYPAD_H__
|
|
||||||
#define __PMIC8XXX_KEYPAD_H__
|
|
||||||
|
|
||||||
#include <linux/input/matrix_keypad.h>
|
|
||||||
|
|
||||||
#define PM8XXX_KEYPAD_DEV_NAME "pm8xxx-keypad"
|
|
||||||
|
|
||||||
/**
|
|
||||||
* struct pm8xxx_keypad_platform_data - platform data for keypad
|
|
||||||
* @keymap_data - matrix keymap data
|
|
||||||
* @input_name - input device name
|
|
||||||
* @input_phys_device - input device name
|
|
||||||
* @num_cols - number of columns of keypad
|
|
||||||
* @num_rows - number of row of keypad
|
|
||||||
* @debounce_ms - debounce period in milliseconds
|
|
||||||
* @scan_delay_ms - scan delay in milliseconds
|
|
||||||
* @row_hold_ns - row hold period in nanoseconds
|
|
||||||
* @wakeup - configure keypad as wakeup
|
|
||||||
* @rep - enable or disable key repeat bit
|
|
||||||
*/
|
|
||||||
struct pm8xxx_keypad_platform_data {
|
|
||||||
const struct matrix_keymap_data *keymap_data;
|
|
||||||
|
|
||||||
const char *input_name;
|
|
||||||
const char *input_phys_device;
|
|
||||||
|
|
||||||
unsigned int num_cols;
|
|
||||||
unsigned int num_rows;
|
|
||||||
unsigned int rows_gpio_start;
|
|
||||||
unsigned int cols_gpio_start;
|
|
||||||
|
|
||||||
unsigned int debounce_ms;
|
|
||||||
unsigned int scan_delay_ms;
|
|
||||||
unsigned int row_hold_ns;
|
|
||||||
|
|
||||||
bool wakeup;
|
|
||||||
bool rep;
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif /*__PMIC8XXX_KEYPAD_H__ */
|
|
Loading…
Reference in a new issue