TWL4030: use symbolic ISR/IMR register names during twl_init_irq()

twl_init_irq() uses a bunch of magic numbers as register indices; this
has already led to several errors, fixed earlier in this patch series.
Now use descriptive macros instead of magic numbers.  This patch should
not change kernel behavior.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/drivers/i2c/chips/twl4030-core.c b/drivers/i2c/chips/twl4030-core.c
index 99cc143b988df0485bf49310cde3bef85184e8da..38c227a968f26e0744d7eec77706fab2114db0a6 100644 (file)
--- a/drivers/i2c/chips/twl4030-core.c
+++ b/drivers/i2c/chips/twl4030-core.c
@@ -40,6 +40,9 @@
 
 #include <linux/i2c.h>
 #include <linux/i2c/twl4030.h>
+#include <linux/i2c/twl4030-gpio.h>
+#include <linux/i2c/twl4030-madc.h>
+#include <linux/i2c/twl4030-pwrirq.h>
 #include <linux/slab.h>
 #include <linux/clk.h>
 #include <linux/device.h>
@@ -114,6 +117,23 @@
 #define TWL4030_BASEADD_RTC            0x001C
 #define TWL4030_BASEADD_SECURED_REG    0x0000
 
+/* TWL4030 BCI registers */
+#define TWL4030_INTERRUPTS_BCIIMR1A    0x2
+#define TWL4030_INTERRUPTS_BCIIMR2A    0x3
+#define TWL4030_INTERRUPTS_BCIIMR1B    0x6
+#define TWL4030_INTERRUPTS_BCIIMR2B    0x7
+#define TWL4030_INTERRUPTS_BCIISR1A    0x0
+#define TWL4030_INTERRUPTS_BCIISR2A    0x1
+#define TWL4030_INTERRUPTS_BCIISR1B    0x4
+#define TWL4030_INTERRUPTS_BCIISR2B    0x5
+
+/* TWL4030 keypad registers */
+#define TWL4030_KEYPAD_KEYP_IMR1       0x12
+#define TWL4030_KEYPAD_KEYP_IMR2       0x14
+#define TWL4030_KEYPAD_KEYP_ISR1       0x11
+#define TWL4030_KEYPAD_KEYP_ISR2       0x13
+
+
 /* Triton Core internal information (END) */
 
 /* Few power values */
@@ -133,12 +153,10 @@
 /* on I2C-1 for 2430SDP */
 #define CONFIG_I2C_TWL4030_ID          1
 
-/* SIH_CTRL registers */
-#define TWL4030_INT_PWR_SIH_CTRL       0x07
+/* SIH_CTRL registers that aren't defined elsewhere */
 #define TWL4030_INTERRUPTS_BCISIHCTRL  0x0d
 #define TWL4030_MADC_MADC_SIH_CTRL     0x67
 #define TWL4030_KEYPAD_KEYP_SIH_CTRL   0x17
-#define TWL4030_GPIO_GPIO_SIH_CTRL     0x2d
 
 #define TWL4030_SIH_CTRL_COR_MASK      (1 << 2)
 
@@ -776,135 +794,121 @@ static void twl_init_irq(void)
         * handlers present.
         */
 
-
-       /* PWR_IMR1 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff, 0x1) < 0);
-
-       /* PWR_IMR2 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff, 0x3) < 0);
-
-       /* Clear off any other pending interrupts on power */
+       /* Mask INT (PWR) interrupts at TWL4030 */
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff,
+                                    TWL4030_INT_PWR_IMR1) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff,
+                                    TWL4030_INT_PWR_IMR2) < 0);
 
        /* Are PWR interrupt status bits cleared by reads or writes? */
        cor = twl4030_read_cor_bit(TWL4030_MODULE_INT,
                                   TWL4030_INT_PWR_SIH_CTRL);
        WARN_ON(cor < 0);
 
-       /* PWR_ISR1 */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT, 0x00, cor) < 0);
-
-       /* PWR_ISR2 */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT, 0x02, cor) < 0);
+       /* Clear TWL4030 INT (PWR) ISRs */
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT,
+                                     TWL4030_INT_PWR_ISR1, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT,
+                                     TWL4030_INT_PWR_ISR2, cor) < 0);
 
        /* Slave address 0x4A */
 
-       /* BCIIMR1A */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x2) < 0);
-
-       /* BCIIMR2A  */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x3) < 0);
-
-       /* BCIIMR2A */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x6) < 0);
-
-       /* BCIIMR2B */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x7) < 0);
+       /* Mask BCI interrupts at TWL4030 */
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+                                    TWL4030_INTERRUPTS_BCIIMR1A) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+                                    TWL4030_INTERRUPTS_BCIIMR2A) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+                                    TWL4030_INTERRUPTS_BCIIMR1B) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+                                    TWL4030_INTERRUPTS_BCIIMR2B) < 0);
 
        /* Are BCI interrupt status bits cleared by reads or writes? */
        cor = twl4030_read_cor_bit(TWL4030_MODULE_INTERRUPTS,
                                   TWL4030_INTERRUPTS_BCISIHCTRL);
        WARN_ON(cor < 0);
 
-       /* BCIISR1A */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x0, cor) < 0);
-
-       /* BCIISR2A */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x1, cor) < 0);
-
-       /* BCIISR1B */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x4, cor) < 0);
-
-       /* BCIISR2B */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x5, cor) < 0);
+       /* Clear TWL4030 BCI ISRs */
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS,
+                                     TWL4030_INTERRUPTS_BCIISR1A, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS,
+                                     TWL4030_INTERRUPTS_BCIISR2A, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS,
+                                     TWL4030_INTERRUPTS_BCIISR1B, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS,
+                                     TWL4030_INTERRUPTS_BCIISR2B, cor) < 0);
 
        /* MAD C */
-       /* MADC_IMR1 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff, 0x62) < 0);
-
-       /* MADC_IMR2 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff, 0x64) < 0);
+       /* Mask MADC interrupts at TWL4030 */
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff,
+                                    TWL4030_MADC_IMR1) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff,
+                                    TWL4030_MADC_IMR2) < 0);
 
        /* Are MADC interrupt status bits cleared by reads or writes? */
        cor = twl4030_read_cor_bit(TWL4030_MODULE_MADC,
                                   TWL4030_MADC_MADC_SIH_CTRL);
        WARN_ON(cor < 0);
 
-       /* MADC_ISR1 */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC, 0x61, cor) < 0);
-
-       /* MADC_ISR2 */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC, 0x63, cor) < 0);
+       /* Clear TWL4030 MADC ISRs */
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC,
+                                     TWL4030_MADC_ISR1, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC,
+                                     TWL4030_MADC_ISR2, cor) < 0);
 
        /* key Pad */
-       /* KEYPAD - IMR1 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff, 0x12) < 0);
+       /* Mask keypad interrupts at TWL4030 */
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff,
+                                    TWL4030_KEYPAD_KEYP_IMR1) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff,
+                                    TWL4030_KEYPAD_KEYP_IMR2) < 0);
 
        /* Are keypad interrupt status bits cleared by reads or writes? */
        cor = twl4030_read_cor_bit(TWL4030_MODULE_KEYPAD,
                                   TWL4030_KEYPAD_KEYP_SIH_CTRL);
        WARN_ON(cor < 0);
 
-       /* KEYPAD - ISR1 */
+       /* Clear TWL4030 keypad ISRs */
        /* XXX does this still need to be done twice for some reason? */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD, 0x11, cor) < 0);
-
-       /* KEYPAD - IMR2 */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff, 0x14) < 0);
-
-       /* KEYPAD - ISR2 */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD, 0x13, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD,
+                                     TWL4030_KEYPAD_KEYP_ISR1, cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD,
+                                     TWL4030_KEYPAD_KEYP_ISR2, cor) < 0);
 
        /* Slave address 0x49 */
-       /* GPIO_IMR1A */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1c) < 0);
-
-       /* GPIO_IMR2A */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1d) < 0);
-
-       /* GPIO_IMR3A */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1e) < 0);
-
-       /* GPIO_IMR1B */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x22) < 0);
 
-       /* GPIO_IMR2B */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x23) < 0);
-
-       /* GPIO_IMR3B */
-       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x24) < 0);
+       /* Mask GPIO interrupts at TWL4030 */
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR1A) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR2A) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR3A) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR1B) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR2B) < 0);
+       WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff,
+                                    REG_GPIO_IMR3B) < 0);
 
        /* Are GPIO interrupt status bits cleared by reads or writes? */
        cor = twl4030_read_cor_bit(TWL4030_MODULE_GPIO,
-                                  TWL4030_GPIO_GPIO_SIH_CTRL);
+                                  REG_GPIO_SIH_CTRL);
        WARN_ON(cor < 0);
 
-       /* GPIO_ISR1A */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x19, cor) < 0);
-
-       /* GPIO_ISR2A */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1a, cor) < 0);
-
-       /* GPIO_ISR3A */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1b, cor) < 0);
-
-       /* GPIO_ISR1B */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1f, cor) < 0);
-
-       /* GPIO_ISR2B */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x20, cor) < 0);
-
-       /* GPIO_ISR3B */
-       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x21, cor) < 0);
+       /* Clear TWL4030 GPIO ISRs */
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR1A,
+                                     cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR2A,
+                                     cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR3A,
+                                     cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR1B,
+                                     cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR2B,
+                                     cor) < 0);
+       WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, REG_GPIO_ISR3B,
+                                     cor) < 0);
 
        /* install an irq handler for each of the PIH modules */
        for (i = TWL4030_IRQ_BASE; i < TWL4030_IRQ_END; i++) {