Major layout change to the packages directory

Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.

The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.

Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 303 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-05.patch b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-05.patch
new file mode 100644
index 0000000000..02a72ed9df
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-05.patch
@@ -0,0 +1,303 @@
+TWL4030: use *_SIH_CTRL.COR bit to determine whether to read or write ISR to clear
+
+From: Paul Walmsley <paul@pwsan.com>
+
+TWL4030 interrupt status register bits can be cleared in one of two ways:
+either by reading from the register, or by writing a 1 to the
+appropriate bit(s) in the register.  This behavior can be altered at any
+time by the <twlmodule>_SIH_CTRL.COR register bit ("clear-on-read").
+
+The TWL4030 TRM is deeply confused as to whether COR=1 means that the
+registers are cleared on reads, or cleared on writes.  Peter De
+Schrijver <peter.de-schrijver> confirms that COR=1 means that the registers
+are cleared on read.
+
+So, for each TWL4030 SIH, check the value of the *_SIH_CTRL.COR bit, and if
+it is 1, use reads to clear the ISRs; if it is 0, use writes.
+
+Also, use WARN_ON() to warn if the read/write failed, and don't skip
+the rest of the initialization on failure either.
+
+Thanks to Peter for his help with this patch.
+
+
+Signed-off-by: Paul Walmsley <paul@pwsan.com>
+---
+
+ drivers/i2c/chips/twl4030-core.c |  183 ++++++++++++++++++++++----------------
+ 1 files changed, 106 insertions(+), 77 deletions(-)
+
+diff --git a/drivers/i2c/chips/twl4030-core.c b/drivers/i2c/chips/twl4030-core.c
+index 9d93524..eae0634 100644
+--- a/drivers/i2c/chips/twl4030-core.c
++++ b/drivers/i2c/chips/twl4030-core.c
+@@ -133,6 +133,16 @@
+ /* on I2C-1 for 2430SDP */
+ #define CONFIG_I2C_TWL4030_ID		1
+ 
++/* SIH_CTRL registers */
++#define TWL4030_INT_PWR_SIH_CTRL	0x07
++#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)
++
++
+ /* Helper functions */
+ static int
+ twl4030_detect_client(struct i2c_adapter *adapter, unsigned char sid);
+@@ -712,13 +722,61 @@ static int power_companion_init(void)
+ 	return e;
+ }
+ 
++/**
++ * twl4030_i2c_clear_isr - clear TWL4030 SIH ISR regs via read + write
++ * @mod_no: TWL4030 module number
++ * @reg: register index to clear
++ * @cor: value of the <module>_SIH_CTRL.COR bit (1 or 0)
++ *
++ * Either reads (cor == 1) or writes (cor == 0) to a TWL4030 interrupt
++ * status register to ensure that any prior interrupts are cleared.
++ * Returns the status from the I2C read operation.
++ */
++static int twl4030_i2c_clear_isr(u8 mod_no, u8 reg, u8 cor)
++{
++	u8 tmp;
++
++	return (cor) ? twl4030_i2c_read_u8(mod_no, &tmp, reg) :
++		twl4030_i2c_write_u8(mod_no, 0xff, reg);
++}
++
++/**
++ * twl4030_read_cor_bit - are TWL module ISRs cleared by reads or writes?
++ * @mod_no: TWL4030 module number
++ * @reg: register index to clear
++ *
++ * Returns 1 if the TWL4030 SIH interrupt status registers (ISRs) for
++ * the specified TWL module are cleared by reads, or 0 if cleared by
++ * writes.
++ */
++static int twl4030_read_cor_bit(u8 mod_no, u8 reg)
++{
++	u8 tmp = 0;
++
++	WARN_ON(twl4030_i2c_read_u8(mod_no, &tmp, reg) < 0);
++
++	tmp &= TWL4030_SIH_CTRL_COR_MASK;
++	tmp >>= __ffs(TWL4030_SIH_CTRL_COR_MASK);
++
++	return tmp;
++}
++
+ static void twl_init_irq(void)
+ {
+ 	int	i = 0;
+ 	int	res = 0;
++	int cor;
+ 	char	*msg = "Unable to register interrupt subsystem";
+ 	unsigned int irq_num;
+ 
++	/*
++	 * For each TWL4030 module with ISR/IMR registers, mask all
++	 * interrupts and then clear any existing interrupt status bits,
++	 * since we initially do not have any TWL4030 module interrupt
++	 * handlers present.
++	 */
++
++
+ 	/* PWR_IMR1 */
+ 	res = twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xFF, 0x1);
+ 	if (res < 0) {
+@@ -734,20 +792,18 @@ static void twl_init_irq(void)
+ 	}
+ 
+ 	/* Clear off any other pending interrupts on power */
++
++	/* 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 */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xFF, 0x00);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT, 0x00, cor) < 0);
+ 
+ 	/* PWR_ISR2 */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xFF, 0x02);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
+-	/* POWER HACK (END) */
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INT, 0x02, cor) < 0);
++
+ 	/* Slave address 0x4A */
+ 
+ 	/* BCIIMR1A */
+@@ -778,33 +834,22 @@ static void twl_init_irq(void)
+ 		return;
+ 	}
+ 
++	/* 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 */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x0);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x0, cor) < 0);
+ 
+ 	/* BCIISR2A */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x1);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x1, cor) < 0);
+ 
+ 	/* BCIISR1B */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x4);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x4, cor) < 0);
+ 
+ 	/* BCIISR2B */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x5);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_INTERRUPTS, 0x5, cor) < 0);
+ 
+ 	/* MAD C */
+ 	/* MADC_IMR1 */
+@@ -821,19 +866,16 @@ static void twl_init_irq(void)
+ 		return;
+ 	}
+ 
++	/* 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 */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xFF, 0x61);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC, 0x61, cor) < 0);
+ 
+ 	/* MADC_ISR2 */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xFF, 0x63);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_MADC, 0x63, cor) < 0);
+ 
+ 	/* key Pad */
+ 	/* KEYPAD - IMR1 */
+@@ -842,12 +884,15 @@ static void twl_init_irq(void)
+ 		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+ 		return;
+ 	}
+-	{
+-		u8 clear;
+-		/* Clear ISR */
+-		twl4030_i2c_read_u8(TWL4030_MODULE_KEYPAD, &clear, 0x11);
+-		twl4030_i2c_read_u8(TWL4030_MODULE_KEYPAD, &clear, 0x11);
+-	}
++
++	/* 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 */
++	/* 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 */
+ 	res = twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xFF, (0x14));
+@@ -856,6 +901,9 @@ static void twl_init_irq(void)
+ 		return;
+ 	}
+ 
++	/* KEYPAD - ISR2 */
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD, 0x13, cor) < 0);
++
+ 	/* Slave address 0x49 */
+ 	/* GPIO_IMR1A */
+ 	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x1C));
+@@ -899,47 +947,28 @@ static void twl_init_irq(void)
+ 		return;
+ 	}
+ 
++	/* Are GPIO interrupt status bits cleared by reads or writes? */
++	cor = twl4030_read_cor_bit(TWL4030_MODULE_GPIO,
++				   TWL4030_GPIO_GPIO_SIH_CTRL);
++	WARN_ON(cor < 0);
++
+ 	/* GPIO_ISR1A */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x19);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x19, cor) < 0);
+ 
+ 	/* GPIO_ISR2A */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1a);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1a, cor) < 0);
+ 
+ 	/* GPIO_ISR3A */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1b);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1b, cor) < 0);
+ 
+ 	/* GPIO_ISR1B */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1f);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x1f, cor) < 0);
+ 
+ 	/* GPIO_ISR2B */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x20);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x20, cor) < 0);
+ 
+ 	/* GPIO_ISR3B */
+-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x21);
+-	if (res < 0) {
+-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
+-		return;
+-	}
++	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_GPIO, 0x21, cor) < 0);
+ 
+ 	/* install an irq handler for each of the PIH modules */
+ 	for (i = TWL4030_IRQ_BASE; i < TWL4030_IRQ_END; i++) {